{"id":14157,"date":"2026-04-01T05:33:45","date_gmt":"2026-04-01T05:33:45","guid":{"rendered":"https:\/\/tenessy.com\/?p=14157"},"modified":"2026-04-01T07:17:50","modified_gmt":"2026-04-01T07:17:50","slug":"application-advantages-of-polycarboxylate-superplasticizer-in-hydropower-station-dam-concrete","status":"publish","type":"post","link":"https:\/\/tenessy.com\/fi\/polykarboksylaattisuperplastifikaattorin-kayttoedut-vesivoimalaitoksen-padon-betonissa\/","title":{"rendered":"Polykarboksylaattipolymeerimassan edut vesivoimalaitoksen padon betonissa"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"14157\" class=\"elementor elementor-14157\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fdbc6e4 e-flex e-con-boxed e-con e-parent\" data-id=\"fdbc6e4\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20af60d elementor-widget elementor-widget-image\" data-id=\"20af60d\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Hydropower-Station-1024x683.jpg\" class=\"attachment-large size-large wp-image-14162\" alt=\"Vesivoimalaitos\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Hydropower-Station-1024x683.jpg 1024w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Hydropower-Station-300x200.jpg 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Hydropower-Station-768x512.jpg 768w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Hydropower-Station-1536x1025.jpg 1536w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Hydropower-Station-18x12.jpg 18w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Hydropower-Station.jpg 1853w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b06d651 elementor-widget elementor-widget-heading\" data-id=\"b06d651\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">I. Johdanto<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ae54ec elementor-widget elementor-widget-text-editor\" data-id=\"5ae54ec\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Koska vesivoimalaitokset ovat kriittisi\u00e4 kansallisia infrastruktuureja, niiden rakentamisen laatu vaikuttaa suoraan hankkeen turvallisuuteen, k\u00e4ytt\u00f6ik\u00e4\u00e4n ja investointien tuottoon. Keskeisiss\u00e4 rakenteissa, kuten patojen, voimalaitosten ja ylivuotoputkien rakenteissa, betoni on yleisimmin k\u00e4ytetty ja suurimman volyymin rakennusmateriaali. Suuressa vesivoimalaitoksessa betonointim\u00e4\u00e4r\u00e4 on usein miljoonia tai jopa kymmeni\u00e4 miljoonia kuutiometrej\u00e4. T\u00e4llaiset massiiviset betonihankkeet asettavat eritt\u00e4in korkeat vaatimukset ty\u00f6stett\u00e4vyydelle, mekaanisille ominaisuuksille, kest\u00e4vyydelle ja rakentamisen tehokkuudelle.<\/p><p class=\"ds-markdown-paragraph\">Perinteisill\u00e4 superplastifikaattoreilla (kuten lignosulfonaatti- ja naftaleenipohjaisilla superplastifikaattoreilla) on tiettyj\u00e4 rajoituksia veden v\u00e4hennysasteen, notkeuden s\u00e4ilymisen ja ymp\u00e4rist\u00f6yst\u00e4v\u00e4llisyyden suhteen, mink\u00e4 vuoksi on vaikeaa t\u00e4ytt\u00e4\u00e4 t\u00e4ysin nykyaikaisten vesivoimahankkeiden vaatimukset korkean suorituskyvyn betonista.\u00a0<a href=\"https:\/\/tenessy.com\/products\/polycarboxylate-superplasticizer\/\"><strong>Polykarboksylaatti-superplastisointiaine<\/strong><\/a>, joka on kolmannen sukupolven korkean suorituskyvyn betonin lis\u00e4aine, on v\u00e4hitellen tullut suosituin lis\u00e4aine vesivoimalaitosten patobetonin valmistukseen sen ainutlaatuisten teknisten etujen ansiosta. T\u00e4ss\u00e4 artikkelissa analysoidaan systemaattisesti polykarboksylaattipolymeerimassan k\u00e4ytt\u00f6etuja vesivoimalaitospadon betonissa useista ulottuvuuksista, mukaan lukien tekniset periaatteet, keskeiset edut ja tekniset k\u00e4yt\u00e4nn\u00f6t.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bbece77 elementor-widget elementor-widget-heading\" data-id=\"bbece77\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">I. Polykarboksylaattipolymeereiden mekanismi ja tekniset ominaisuudet<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fabc90 elementor-widget elementor-widget-heading\" data-id=\"8fabc90\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1.1 Molekyylirakenteen suunnittelun mahdollistama ainutlaatuinen suorituskyky<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c7729ed elementor-widget elementor-widget-text-editor\" data-id=\"c7729ed\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Polykarboksylaattipolymeeri-pinnoitusaine kuuluu polymeeripinta-aktiivisten aineiden luokkaan, ja sen molekyylirakenne on kampamainen - p\u00e4\u00e4ketju sis\u00e4lt\u00e4\u00e4 polaarisia funktionaalisia ryhmi\u00e4, kuten karboksyylihapporyhmi\u00e4 ja sulfonihapporyhmi\u00e4, kun taas sivuketjut ovat pitki\u00e4 polyoksietyleeniketjuja. T\u00e4m\u00e4n ainutlaatuisen rakenteen ansiosta sen adsorptiok\u00e4ytt\u00e4ytyminen sementtihiukkasten pinnoilla poikkeaa selv\u00e4sti perinteisist\u00e4 superplastisoimisaineista:<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>Stereinen estevaikutus:<\/strong>\u00a0Pitk\u00e4t sivuketjumolekyylit muodostavat kolmiulotteisen esteen sementtihiukkasten pinnoille, mik\u00e4 est\u00e4\u00e4 tehokkaasti hiukkasten aggregoitumisen ja takaa pysyv\u00e4mm\u00e4n dispersion.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Synergistinen s\u00e4hk\u00f6staattinen hylkiminen:<\/strong>\u00a0P\u00e4\u00e4ketjun anioniryhm\u00e4t aiheuttavat s\u00e4hk\u00f6staattisen hylkimisen, joka yhdess\u00e4 steerisen esteen kanssa luo kaksinkertaisen stabilointimekanismin.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Korkea hy\u00f6tysuhde pienell\u00e4 annostuksella:<\/strong>\u00a0Perinteisten superplastisointiaineiden 0,5%-1,0% annostukseen verrattuna polykarboksylaatti-superplastisointiaineella saavutetaan 25%-35% veden v\u00e4hent\u00e4misaste vain 0,15%-0,3% annostuksella, ja veden v\u00e4hent\u00e4misaste on enimmill\u00e4\u00e4n yli 50%.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c61fe5 elementor-widget elementor-widget-heading\" data-id=\"8c61fe5\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1.2 Ymp\u00e4rist\u00f6- ja turvallisuusominaisuudet<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54b6540 elementor-widget elementor-widget-text-editor\" data-id=\"54b6540\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Polykarboksylaatti-superplastisointiaine\u00a0<strong>ei sis\u00e4ll\u00e4 haitallisia aineita, kuten formaldehydi\u00e4 tai naftaleenia.<\/strong>\u00a0valmistuksen ja k\u00e4yt\u00f6n aikana, sill\u00e4 ei ole \u00e4rsytt\u00e4v\u00e4\u00e4 hajua ja se on yst\u00e4v\u00e4llinen rakennushenkil\u00f6st\u00f6lle ja ymp\u00e4r\u00f6iv\u00e4lle ymp\u00e4rist\u00f6lle. T\u00e4m\u00e4 ominaisuus vastaa alan nykyist\u00e4 vihre\u00e4n rakentamisen ja kest\u00e4v\u00e4n kehityksen suuntaa, joten se soveltuu erityisen hyvin suuriin vesivoimahankkeisiin, joissa on tiukat ymp\u00e4rist\u00f6vaatimukset.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9b2cd0b e-flex e-con-boxed e-con e-parent\" data-id=\"9b2cd0b\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47b4288 elementor-widget elementor-widget-heading\" data-id=\"47b4288\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">II. Vesivoimalaitoksen patobetonin tekniset haasteet<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b10f69 elementor-widget elementor-widget-text-editor\" data-id=\"1b10f69\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Ennen polykarboksylaattipitoisen superplastifikaattimassan k\u00e4ytt\u00f6etujen syv\u00e4llist\u00e4 analysointia on ymm\u00e4rrett\u00e4v\u00e4 vesivoimalaitoksen patobetonin erityiset tekniset haasteet:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7420998 elementor-widget elementor-widget-heading\" data-id=\"7420998\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.1 L\u00e4mp\u00f6tilan s\u00e4\u00e4t\u00f6 ja halkeamien est\u00e4minen massabetonissa<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c553277 elementor-widget elementor-widget-text-editor\" data-id=\"c553277\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vesivoimalaitosten padot ovat tyypillisi\u00e4 massabetonirakenteita. Sementin hydrataation aikana vapautuu suuri m\u00e4\u00e4r\u00e4 l\u00e4mp\u00f6\u00e4, jolloin sis\u00e4l\u00e4mp\u00f6tila nousee nopeasti, kun taas pinta luovuttaa l\u00e4mp\u00f6\u00e4 hitaasti, mik\u00e4 aiheuttaa l\u00e4mp\u00f6tilagradientin. Kun l\u00e4mp\u00f6j\u00e4nnitys ylitt\u00e4\u00e4 betonin vetolujuuden, syntyy l\u00e4mp\u00f6halkeamia. Halkeamat eiv\u00e4t vaikuta ainoastaan rakenteelliseen ulkon\u00e4k\u00f6\u00f6n, vaan ne voivat my\u00f6s vaarantaa padon tiiviyden ja pitk\u00e4n aikav\u00e4lin turvallisuuden.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a94d6f0 elementor-widget elementor-widget-heading\" data-id=\"a94d6f0\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.2 L\u00e4p\u00e4isem\u00e4tt\u00f6myytt\u00e4 ja kest\u00e4vyytt\u00e4 koskevat korkeat vaatimukset<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9fbed51 elementor-widget elementor-widget-text-editor\" data-id=\"9fbed51\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Padot altistuvat pitk\u00e4aikaiselle vedenpaineelle, j\u00e4\u00e4tymis- ja sulamissykleille, veden hankaukselle ja ymp\u00e4rist\u00f6n eroosiolle. Betonilla on oltava erinomainen tiiviys, pakkasenkest\u00e4vyys ja kemiallinen eroosionkest\u00e4vyys, jotta varmistetaan vesivoimalaitoksen turvallinen toiminta ja suunniteltu k\u00e4ytt\u00f6ik\u00e4.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ad993b4 elementor-widget elementor-widget-heading\" data-id=\"ad993b4\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.3 Monimutkaiset rakennusolosuhteet<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13fbe35 elementor-widget elementor-widget-text-editor\" data-id=\"13fbe35\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vesivoimahankkeet sijaitsevat usein syvill\u00e4 vuorilla ja rotkoissa, joihin on hankalat kuljetukset ja vaihteleva ilmasto. Betonin on kuljettava pitki\u00e4 matkoja, kestett\u00e4v\u00e4 korkeaa betonointivoimakkuutta ja sopeuduttava kapeisiin rakennusty\u00f6maihin. Betonin on s\u00e4ilytett\u00e4v\u00e4 erinomainen juoksevuus ja notkeuden s\u00e4ilyminen suurissa notkahduksissa, ja samalla sen on sopeuduttava erilaisiin toimitusmenetelmiin, kuten pumppaukseen ja kouruihin.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d65b07 elementor-widget elementor-widget-heading\" data-id=\"5d65b07\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.4 Suuren lujuuden ja suuren juoksevuuden v\u00e4linen ristiriita<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-724b6d8 elementor-widget elementor-widget-text-editor\" data-id=\"724b6d8\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Tiettyjen padon osien (kuten kaaripadon tukipisteiden ja ylivuotoputken pintojen) betonin lujuusvaatimukset ovat korkeat. Korkealuokkaisella betonilla on kuitenkin taipumus olla korkea viskositeetti ja huono juoksevuus, mik\u00e4 aiheuttaa vaikeuksia rakentamisessa. Lujuuden parantamisen ja ty\u00f6stett\u00e4vyyden parantamisen tasapainottaminen on ollut pitk\u00e4\u00e4n vesivoimahankkeiden tekninen haaste.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2574a91 elementor-widget elementor-widget-heading\" data-id=\"2574a91\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">III. Polykarboksylaattipolymeerimassan keskeiset edut vesivoimalaitoksen padon betonissa<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8db171 elementor-widget elementor-widget-image\" data-id=\"f8db171\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Polycarboxylate-superplasticizers-1024x683.jpg\" class=\"attachment-large size-large wp-image-14163\" alt=\"\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Polycarboxylate-superplasticizers-1024x683.jpg 1024w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Polycarboxylate-superplasticizers-300x200.jpg 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Polycarboxylate-superplasticizers-768x512.jpg 768w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Polycarboxylate-superplasticizers-1536x1024.jpg 1536w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Polycarboxylate-superplasticizers-2048x1365.jpg 2048w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/04\/Polycarboxylate-superplasticizers-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c25c99 elementor-widget elementor-widget-heading\" data-id=\"6c25c99\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3.1 Ylivoimainen veden v\u00e4hent\u00e4minen ja lujuuden parantaminen<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9fd1a6b elementor-widget elementor-widget-text-editor\" data-id=\"9fd1a6b\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Polykarboksylaattisuperplasifikaattorin suurin tekninen etu on sen\u00a0<strong>korkea veden v\u00e4hent\u00e4misaste<\/strong>. Samalla vesi-sementtisuhteella sen veden v\u00e4hent\u00e4misaste voi olla 25%-35%, mik\u00e4 on huomattavasti korkeampi kuin naftaleenipohjaisten superplastisoimisaineiden 15%-20%. T\u00e4m\u00e4 tarkoittaa:<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>V\u00e4hennetty vedenkulutus:<\/strong>\u00a0Samalla vesi-sementtisuhteella voidaan v\u00e4hent\u00e4\u00e4 merkitt\u00e4v\u00e4sti yksikk\u00f6kohtaista vedenkulutusta, mik\u00e4 v\u00e4hent\u00e4\u00e4 sementin kulutusta ja s\u00e4\u00e4st\u00e4\u00e4 kustannuksia.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Lis\u00e4\u00e4ntynyt vahvuus:<\/strong>\u00a0Vesi-sementtisuhdetta voidaan pienent\u00e4\u00e4 huomattavasti, kun samalla s\u00e4ilytet\u00e4\u00e4n sama juoksevuus, mik\u00e4 parantaa huomattavasti sek\u00e4 betonin varhais- ett\u00e4 my\u00f6hemp\u00e4\u00e4 lujuutta.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Optimoitu sekoitussuunnittelu:<\/strong>\u00a0Tarjoaa suurempaa joustavuutta korkean suorituskyvyn betonin muotoilussa, mik\u00e4 mahdollistaa C80- ja C100-lujuuksien kaltaisen lujuusbetonin k\u00e4yt\u00f6n vesivoimahankkeissa.<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><strong>Tekninen arvo:<\/strong>\u00a0Miljoonan kuutiometrin betonim\u00e4\u00e4r\u00e4ss\u00e4 sementin kulutuksen v\u00e4hent\u00e4minen 10 kg\/m\u00b3:ll\u00e4 s\u00e4\u00e4st\u00e4\u00e4 kymmeni\u00e4 tuhansia tonneja sementti\u00e4, mik\u00e4 tuo merkitt\u00e4vi\u00e4 taloudellisia etuja. Samaan aikaan suuren veden v\u00e4hent\u00e4misen tuoma lujuuden paraneminen antaa teknist\u00e4 tukea patojen rakenteiden optimointiin.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7965ad2 elementor-widget elementor-widget-heading\" data-id=\"7965ad2\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3.2 Erinomainen m\u00f6hk\u00e4leenpid\u00e4tys, joka varmistaa rakentamisen jatkuvuuden.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d4052c5 elementor-widget elementor-widget-text-editor\" data-id=\"d4052c5\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Perinteiset superplastisointiaineet (erityisesti naftaleenipohjaiset) k\u00e4rsiv\u00e4t yleisesti nopeasta notkahduksesta. Betoniin on usein lis\u00e4tt\u00e4v\u00e4 vett\u00e4 tai seosta on s\u00e4\u00e4dett\u00e4v\u00e4 ty\u00f6maalle saavuttuaan, mik\u00e4 vaikuttaa rakentamisen tehokkuuteen ja laatuun.<\/p><p class=\"ds-markdown-paragraph\">Polykarboksylaatti-superplastisointiaine, kautta\u00a0<strong>molekyylirakenteen suunnittelukelpoisuus<\/strong>, saavuttaa\u00a0<strong>ei k\u00e4yt\u00e4nn\u00f6ss\u00e4 lainkaan notkeuden menetyst\u00e4 2-3 tunnin kuluessa<\/strong>. Mekanismiin kuuluu:<\/p><ul><li><p class=\"ds-markdown-paragraph\">Polyoksieteenin sivuketjujen asteittainen hydrolyysi em\u00e4ksisiss\u00e4 ymp\u00e4rist\u00f6iss\u00e4, jolloin dispergointivaikutus vapautuu jatkuvasti.<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Hidastavien ja dispergoituvien komponenttien synergistinen vuorovaikutus, joka viiv\u00e4stytt\u00e4\u00e4 sementin hydrataatioprosessia.<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><strong>Tekninen arvo:<\/strong>\u00a0Vesivoimalaitosten betoni vaatii usein pitk\u00e4n kuljetusmatkan ja pitk\u00e4n odotuksen ennen betonointia. Erinomainen sakkauksen s\u00e4ilyminen varmistaa, ett\u00e4 betoni s\u00e4ilyy hyvin ty\u00f6stett\u00e4v\u00e4n\u00e4 ty\u00f6maalle saapuessaan, jolloin v\u00e4ltet\u00e4\u00e4n veden lis\u00e4\u00e4misen aiheuttama lujuuden aleneminen ja kest\u00e4vyyden heikkeneminen.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a0f305 elementor-widget elementor-widget-heading\" data-id=\"0a0f305\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3.3 Hydrataatiol\u00e4mm\u00f6n tehokas v\u00e4hent\u00e4minen, joka edist\u00e4\u00e4 l\u00e4mp\u00f6tilan hallintaa ja halkeamien ehk\u00e4isy\u00e4.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-73d15c6 elementor-widget elementor-widget-text-editor\" data-id=\"73d15c6\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Massabetonin l\u00e4mp\u00f6halkeilu on keskeinen laaturiski vesivoimahankkeissa. Polykarboksylaattisuperplastisointiaine edist\u00e4\u00e4 l\u00e4mp\u00f6tilan hallintaa ja halkeamien ehk\u00e4isy\u00e4 kahdella tavalla:<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>Sementin kulutuksen v\u00e4hent\u00e4minen:<\/strong>\u00a0Suuri veden v\u00e4hent\u00e4misaste mahdollistaa sementin kulutuksen v\u00e4hent\u00e4misen 10%-15% samalla kun lujuusvaatimukset t\u00e4yttyv\u00e4t. V\u00e4hentynyt sementin kulutus alentaa suoraan kokonaishydraatiol\u00e4mp\u00f6\u00e4 betonin tilavuusyksikk\u00f6\u00e4 kohti.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Viiv\u00e4stynyt nesteytyshuippu:<\/strong>\u00a0Molekyylirakenteen suunnittelun avulla polykarboksylaattipolymeeri voi sis\u00e4lt\u00e4\u00e4 hidastavia toimintoja, mik\u00e4 tekee hydrataatiol\u00e4mm\u00f6n vapautumisk\u00e4yr\u00e4st\u00e4 pehme\u00e4mm\u00e4n ja v\u00e4hent\u00e4\u00e4 l\u00e4mp\u00f6tilan nousunopeutta ja huippul\u00e4mp\u00f6tilaa.<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><strong>Tekninen arvo:<\/strong>\u00a0Xiluodun ja Baihetanin kaltaisten megavoimalaitosten rakentamisessa polykarboksylaattipolymeeri toimi synergisesti j\u00e4\u00e4hdytysputkien, l\u00e4mp\u00f6tilavalvotun kovettumisen ja muiden toimenpiteiden kanssa, jotta padon betonin l\u00e4mp\u00f6tilan s\u00e4\u00e4t\u00f6tavoitteet saavutettiin onnistuneesti ja halkeiluriskit hallittiin tehokkaasti.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ad163f6 elementor-widget elementor-widget-heading\" data-id=\"ad163f6\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3.4 Parempi betonin ty\u00f6stett\u00e4vyys, sopeutuminen monimutkaisiin rakentamisolosuhteisiin<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23085ca elementor-widget elementor-widget-text-editor\" data-id=\"23085ca\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Vesivoimalaitosten betonirakentamiseen liittyy erilaisia monimutkaisia olosuhteita, kuten suuria pystysuoria pudotuksia, pitki\u00e4 matkoja ja ahtaita tiloja, jotka asettavat suuria vaatimuksia betonin ty\u00f6stett\u00e4vyydelle. Polykarboksylaatti-superplastisointiaine antaa betonille seuraavat erinomaiset ominaisuudet:<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>Korkea juoksevuus:<\/strong>\u00a0Sakkaus voi nousta yli 220mm, sakkausvirtaus voi ylitt\u00e4\u00e4 600mm, sopii erilaisiin toimitusmenetelmiin, kuten pumppaukseen ja kouruihin.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Alhainen viskositeetti:<\/strong>\u00a0Molekyylisuunnittelun avulla lietteen viskositeettia v\u00e4hennet\u00e4\u00e4n, mik\u00e4 ratkaisee korkealaatuisen betonin rakentamisen vaikeuden, joka on \"sek\u00e4 viskoosi ett\u00e4 raskas\".<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Eriytymisen vastainen:<\/strong>\u00a0S\u00e4ilytt\u00e4\u00e4 hyv\u00e4n homogeenisuuden korkeassa juoksevuudessa, mik\u00e4 est\u00e4\u00e4 aggregaatin erottumisen ja verenvuodon.<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><strong>Tekninen arvo:<\/strong>\u00a0Rakenteellisesti monimutkaisilla alueilla, kuten kaari- ja painovoimapadoilla, korkean juoksevuuden betoni voi t\u00e4ytt\u00e4\u00e4 muottikulmat kokonaan ja varmistaa betonin tiheyden ja ulkon\u00e4\u00f6n laadun; ahtaissa tiloissa, kuten kapeissa k\u00e4yt\u00e4viss\u00e4 ja kammioissa, alhainen viskositeetti ja hyv\u00e4 pumppausominaisuus v\u00e4hent\u00e4v\u00e4t merkitt\u00e4v\u00e4sti rakentamisen vaikeutta.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-940e9b3 elementor-widget elementor-widget-heading\" data-id=\"940e9b3\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3.5 Kest\u00e4vyyden parantaminen, hankkeen elinkaaren pident\u00e4minen<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4da8f6b elementor-widget elementor-widget-text-editor\" data-id=\"4da8f6b\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Vesivoimalaitospatojen k\u00e4ytt\u00f6ik\u00e4 on yleens\u00e4 50-100 vuotta, joten kest\u00e4vyys on eritt\u00e4in t\u00e4rke\u00e4\u00e4. Polykarboksylaatti-superplastisointiaine parantaa betonin kest\u00e4vyytt\u00e4 seuraavien mekanismien avulla:<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>Alennettu vesi-sementtisuhde:<\/strong>\u00a0Alhaisempi vesi-sementtisuhde v\u00e4hent\u00e4\u00e4 huokoisuutta ja hienos\u00e4\u00e4t\u00e4\u00e4 huokosrakennetta kovettuneessa betonissa, mik\u00e4 parantaa merkitt\u00e4v\u00e4sti tiiviytt\u00e4 (tiiviysluokka voi nousta P12:een tai korkeammaksi).<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>V\u00e4hentynyt kutistuminen:<\/strong>\u00a0Sementin pienemm\u00e4n kulutuksen ja hydrataatiol\u00e4mm\u00f6n hallinnan yhteisvaikutus v\u00e4hent\u00e4\u00e4 kuivumiskutistumaa ja l\u00e4mp\u00f6kutistumaa, mik\u00e4 v\u00e4hent\u00e4\u00e4 halkeiluriski\u00e4.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Parannettu rajapinnan siirtym\u00e4alue:<\/strong>\u00a0Dispergointivaikutus mahdollistaa sementin t\u00e4ydellisemm\u00e4n hydrataation, mik\u00e4 johtaa tiiviimp\u00e4\u00e4n kiviaineksen ja massan rajapinnan siirtym\u00e4vy\u00f6hykkeeseen ja parantaa pakkasrapautumiskest\u00e4vyytt\u00e4 ja kemiallista eroosionkest\u00e4vyytt\u00e4.<\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><strong>Tekninen arvo:<\/strong>\u00a0Kylmill\u00e4 alueilla sijaitsevissa vesivoimalaitoksissa erinomainen pakkas-sulakest\u00e4vyys liittyy suoraan padon turvalliseen toimintaan; hankkeissa, joissa on aggressiivinen pohjavesiymp\u00e4rist\u00f6, korkea tiiviys ja kemiallinen eroosionkest\u00e4vyys ovat kriittisi\u00e4.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-83ea234 elementor-widget elementor-widget-heading\" data-id=\"83ea234\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">IV. Varotoimenpiteet polykarboksylaattipolymeerijauhetta k\u00e4ytett\u00e4ess\u00e4<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-508267e elementor-widget elementor-widget-text-editor\" data-id=\"508267e\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vaikka polykarboksylaattipolymeeri tarjoaa huomattavia etuja, seuraavat seikat on otettava huomioon k\u00e4yt\u00e4nn\u00f6n sovelluksissa, jotta varmistetaan t\u00e4ysi suorituskyky:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ac7037 elementor-widget elementor-widget-heading\" data-id=\"8ac7037\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.1 Yhteensopivuus sementin kanssa<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3712386 elementor-widget elementor-widget-text-editor\" data-id=\"3712386\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Polykarboksylaattisuperplastifikaattorin yhteensopivuus vaihtelee eri sementtien kanssa. On suositeltavaa tehd\u00e4\u00a0<strong>yhteensopivuustestit<\/strong>\u00a0ennen teknist\u00e4 k\u00e4ytt\u00f6\u00e4 optimaalisen annostuksen ja hidastimien, ilmaa sitovien aineiden ja muiden komponenttien yhdist\u00e4vien vaikutusten m\u00e4\u00e4ritt\u00e4miseksi.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f0ae9c0 elementor-widget elementor-widget-heading\" data-id=\"f0ae9c0\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.2 Herkkyys vedenkulutukselle<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1eb0164 elementor-widget elementor-widget-text-editor\" data-id=\"1eb0164\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Polykarboksylaattipolymeeri on herkk\u00e4 vedenkulutukselle. Veden kulutuksen vaihtelut vaikuttavat merkitt\u00e4v\u00e4sti veden v\u00e4hentymisnopeuteen ja notkistumiseen. Rakentamisen aikana on noudatettava tiukkaa annostuksen valvontaa, ja veden lis\u00e4\u00e4mist\u00e4 ty\u00f6maalla on v\u00e4ltett\u00e4v\u00e4.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bebc9e1 elementor-widget elementor-widget-heading\" data-id=\"bebc9e1\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.3 Ei saa sekoittaa naftaleenipohjaisten pehmittimien kanssa.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-afec9f6 elementor-widget elementor-widget-text-editor\" data-id=\"afec9f6\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Polykarboksylaattipitoinen superplastisointiaine ja naftaleenipohjainen superplastisointiaine\u00a0<strong>ei saa sekoittaa<\/strong>. N\u00e4iden kahden sekoittaminen voi aiheuttaa vakavaa suorituskyvyn heikkenemist\u00e4 tai jopa t\u00e4ydellisen ep\u00e4onnistumisen. Jos seosaineita vaihdetaan, sekoituslaitteet ja kuljetuss\u00e4ili\u00f6t on puhdistettava perusteellisesti.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc1adea elementor-widget elementor-widget-heading\" data-id=\"cc1adea\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.4 Annostuksen valvonta<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5f5b821 elementor-widget elementor-widget-text-editor\" data-id=\"5f5b821\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Polykarboksylaattisuperplastifikaattorin annostus on tyypillisesti 0,15%-0,3% sementtimateriaalipitoisuudesta. Riitt\u00e4m\u00e4t\u00f6n annostus johtaa ep\u00e4tyydytt\u00e4v\u00e4\u00e4n suorituskykyyn, kun taas liiallinen annostus voi aiheuttaa liiallista hidastumista tai verenvuotoa. Todellinen annostus on m\u00e4\u00e4ritett\u00e4v\u00e4 testaamalla ja sit\u00e4 on valvottava tiukasti rakentamisen aikana.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a3f4944 elementor-widget elementor-widget-heading\" data-id=\"a3f4944\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">V. P\u00e4\u00e4telm\u00e4t<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fce879 elementor-widget elementor-widget-text-editor\" data-id=\"8fce879\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Polykarboksylaatti-superplastisointiaineesta, jolla on korkea veden v\u00e4hent\u00e4misaste, erinomainen muhkuran pid\u00e4ttyminen, alhainen hydrataatiol\u00e4mp\u00f6, hyv\u00e4 ty\u00f6stett\u00e4vyyden parantaminen ja kest\u00e4vyyden parantaminen, on tullut v\u00e4ltt\u00e4m\u00e4t\u00f6n keskeinen toiminnallinen materiaali vesivoimalaitoksen patobetonia varten.\u00a0<\/p><p class=\"ds-markdown-paragraph\">Kun vesivoimahankkeet kehittyv\u00e4t kohti korkeampia patoja, suurempia mittakaavoja ja monimutkaisempia geologisia olosuhteita, betonin suorituskykyvaatimukset kasvavat edelleen. Polykarboksylaatti-superplastifikaattiteknologian tulevissa kehityssuunnissa keskityt\u00e4\u00e4n seuraaviin seikkoihin:<\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong>Tarkka molekyylirakenteen suunnittelu:<\/strong>\u00a0R\u00e4\u00e4t\u00e4l\u00f6ityjen tuotteiden kehitt\u00e4minen erilaisten teknisten vaatimusten t\u00e4ytt\u00e4miseksi.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Vihre\u00e4 ja v\u00e4h\u00e4hiilinen:<\/strong>\u00a0Tuotannon energiankulutuksen v\u00e4hent\u00e4minen edelleen ja <a href=\"https:\/\/tenessy.com\/hpmc-supplier\/sustainability\/\">ymp\u00e4rist\u00f6yst\u00e4v\u00e4llisyys<\/a><\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\">Ammattimaisena rakennuslis\u00e4aineiden toimittajana,\u00a0<a href=\"https:\/\/tenessy.com\/hpmc-supplier\/\"><strong>TENESSY<\/strong><\/a>\u00a0jatkaa polykarboksylaattisuperplastisointiteknologian syv\u00e4llist\u00e4 kehitt\u00e4mist\u00e4 ja tarjoaa suorituskykyisi\u00e4, eritt\u00e4in vakaita tuotteita ja tuotteita, joilla on korkea kest\u00e4vyys. <a href=\"https:\/\/tenessy.com\/contact\/\">tekninen tuki<\/a> vesivoimahankkeissa ja laajemmissa betonisovelluksissa.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Polykarboksylaattisuperplastisointiaineesta, joka on kolmannen sukupolven korkean suorituskyvyn betonin lis\u00e4aine, on v\u00e4hitellen tullut ensisijainen lis\u00e4aine vesivoimalaitoksen patobetonin valmistukseen sen ainutlaatuisten teknisten etujen vuoksi.<\/p>","protected":false},"author":1,"featured_media":14162,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[35],"tags":[],"class_list":["post-14157","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - 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