Polycarboxylate Superplasticizer PC Description
Nyob rau hauv lub neej niaj hnub no, cov tsev siab siab tuaj yeem pom nyob txhua qhov chaw, thiab ntau lub tsev tshiab thiab cov phiaj xwm tshwm sim nyob rau hauv qhov dej tsis muaj qhov kawg. Kev siv cov thev naus laus zis tshiab thiab cov ntaub ntawv tshiab hauv ntau qhov haujlwm kuj tseem muaj ntau. Polycarboxylate Superplasticizer PC, raws li lub cim thib peb ntawm cov dej ua kom muaj txiaj ntsig zoo, muaj cov yam ntxwv ntawm cov dej txo qis, kev txhawb zog siab, qis shrinkage, thiab poob qis me me. Nws yog dav siv nyob rau hauv cov pob zeb zoo tib yam thiab superfluid nws tus kheej-compacting pob zeb, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov ntawm high-zog thiab high-kev ua tau zoo pob zeb. Nws muaj kev ua tau zoo heev.
Kev tshawb fawb txog kev ua haujlwm siab dej reducer yog ib ceg tseem ceeb ntawm cov khoom siv kev tshawb fawb, thiab txhawb nqa kev txhim kho txuas ntxiv ntawm cov khoom ua vaj tse mus rau lub zog siab thiab kev ua haujlwm siab. Ntawm lawv, polycarboxylate Superplasticizer PC high-efficiency dej reducer yog tus neeg sawv cev ntawm lub cim tshiab ntawm ntsuab high-efficiency dej reducer. Ua ke nrog cov ntaub ntawv hauv tsev thiab txawv teb chaws, daim ntawv no qhia txog cov xwm txheej ntawm kev tshawb fawb, cov yam ntxwv ntawm kev ua haujlwm, kev ruaj ntseg kev ruaj ntseg mechanism thiab kev txhim kho yav tom ntej ntawm polycarboxylate high-efficiency water reducer. Nws tau taw qhia tias qhov kev tshawb fawb theoretical tseem ceeb ntawm polycarboxylate high-efficiency dej reducer yuav tsum tau ntxiv dag zog; txoj kev loj hlob, synthesis thiab zus tau tej cov series ntawm polycarboxylate dej reducer matrix nrog ntau haiv neeg thiab sib txawv kev ua tau zoo thiab multifunctional polycarboxylate dej reducer derivatives tau dhau los ua tus inevitable qauv ntawm txoj kev loj hlob ntawm Superplasticizer PC polycarboxylate high-efficiency dej reducer hnub no.
Polycarboxylate Superplasticizer PC muaj nuj nqi
Polycarboxylate dej txo tus neeg sawv cev tuaj yeem txo cov dej haus tsis muaj kev cuam tshuam rau kev ua haujlwm ntawm pob zeb. Los yog nws tuaj yeem txhim kho kev ua haujlwm ntawm pob zeb yam tsis tau hloov pauv chav dej siv. Los yog ib qho admixture uas muaj cov teebmeem saum toj no ob zaug tib lub sijhawm yam tsis muaj kev hloov pauv cov ntsiab lus roj. Tam sim no, cov khoom siv dej txo qis siv yog surfactants, uas yog anionic surfactants.
Polycarboxylate Superplasticizer PC kev ua tau zoo
Tom qab cov cement tov nrog dej, cov tshuaj tiv thaiv hydration tshwm sim, thiab qee cov qauv zoo li flocculation tshwm sim, uas qhwv ntau cov dej sib tov, yog li txo cov kev ua haujlwm ntawm cov pob zeb tshiab (tseem hu ua workability, feem ntau yog hais txog kev siv cov pob zeb tshiab. Thaum lub sij hawm tsim kho), uas yog, kev ua tau zoo ntawm kev muaj peev xwm tswj tau qhov sib xws thiab qhov ntom ntom yam tsis muaj stratification thiab sib cais thaum sib xyaw, kev thauj mus los, dej, thiab lwm yam). Yuav kom tswj tau qhov kev ua haujlwm uas yuav tsum tau ua thaum tsim kho, cov dej sib tov yuav tsum tau nce ntxiv raws li. Vim tias qhov nce ntawm cov dej yuav tsim ntau qhov pores hauv cov qauv pob zeb cement, uas yuav cuam tshuam rau lub cev thiab cov khoom siv ntawm cov pob zeb tawv tawv, yog tias cov ntaub qhwv los ntawm kev tso cov dej noo, cov dej siv ntawm cov pob zeb tuaj yeem txo qis heev. Hauv cov txheej txheem ntawm kev npaj cov pob zeb, ntxiv qhov tsim nyog ntawm cov dej txo tus neeg sawv cev tuaj yeem ua lub luag haujlwm zoo.
Tom qab Polycarboxylate Superplasticizer PC dej-txo tus neeg sawv cev ntxiv rau hauv pob zeb, pawg hydrophobic ntawm cov dej-txo tus neeg sawv cev yog directionally adsorbed rau saum npoo ntawm cov cement hais, thaum cov pab pawg hydrophilic raug coj mus rau aqueous tov, tsim ib leeg-molecule los yog multi-layer adsorption zaj duab xis. Vim yog qhov taw qhia adsorption ntawm cov surfactant, qhov saum npoo ntawm cov cement hais muaj nqi ntawm tib lub cim. Yog li ntawd, nyob rau hauv qhov kev txiav txim ntawm tib-poj niam txiv neej repulsion, tsis tau tsuas yog cov cement-dej system nyob rau hauv ib qho kev ruaj ntseg ncua lub xeev, tab sis kuj cov cement tuaj yeem ntxiv nrog dej. Cov qauv flocculated tsim nyob rau hauv thawj theem yog dispersed thiab disintegrated, yog li tso cov dej nyob rau hauv lub flocculated qauv kom ua tiav lub hom phiaj ntawm dej txo. Tom qab ntxiv cov dej-txo tus neeg sawv cev, tsis tsuas yog tuaj yeem txhim kho kev ua haujlwm ntawm cov pob zeb tshiab, tab sis kuj vim tias qhov sib piv ntawm cov dej-cement hauv cov pob zeb tau poob qis, qhov ntim sab hauv ntawm cov cement pob zeb tau txo qis, cov cement. pob zeb tau ua denser, thiab kev tiv thaiv ntawm cov pob zeb tau nce. Lub zog compressive tau zoo heev. Qhov sib ntxiv ntawm Polycarboxylate Superplasticizer PC dej txo tus neeg sawv cev kuj tseem cuam tshuam rau lub hydration tus nqi thiab teem sij hawm ntawm cov cement. Cov khoom no tseem ceeb heev hauv kev siv tswv yim.
Polycarboxylate Superplasticizer PC ntau npaum
Kev noj ntau npaum li cas: Feem ntau, qhov ntau npaum li cas yog {{0}}}5-1.5% ntawm qhov hnyav ntawm cov khoom cementitious thaum hloov mus rau 20% cov ntsiab lus, thiab cov lus pom zoo yog 1.0%.
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