Dab tsi yog Cov Lus Ceeb Toom Rau Cov Pob Zeb Nrog Polycarboxylic Admixtures?

Kev ceev faj rau kev siv Polycarboxylate Superplasticizer hauv pob zeb

Polycarboxylate yog ib hom tshiab ntawm cov khoom sib xyaw uas muaj cov dej txo qis, hloov tau zoo, txhim kho kev ua haujlwm zoo, thiab ua tau raws li qhov yuav tsum tau ua rau kev thauj mus los ntev, twj tso kua mis, thiab cov pob zeb hauv qab dej. Nws txhim kho ob qho tib si kev ua haujlwm thiab kev ua haujlwm zoo ntawm kev tsim vaj tsev. Kev ceev faj rau kev siv polycarboxylate superplasticizer hauv pob zeb yog raws li hauv qab no:

1. Sensitivity rau dej: Polycarboxylate muaj cov dej txo qis dua li naphthalene thiab fatty acid-based superplasticizers, thiab nws muaj zog dispersibility. Thaum cov dej txo qis tshaj 30%, cov nyhuv yuav tshwm sim ntau dua li qhov ntau npaum li cas, uas tuaj yeem ua rau muaj kev sib cais, los ntshav, thiab cov ntsiab lus ntawm huab cua ntau dhau. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tau kho cov tshuaj kom zoo kom tsis txhob overdosage. Cov khoom siv raw, suav nrog cov dej noo ntawm cov khoom sib xyaw, kev hloov pauv ntawm cov cement, qhov sib xws, thiab qhov zoo thiab qhov tshwj xeeb ntawm cov khoom ntxiv, yuav tsum raug coj mus rau hauv tus account. Hauv huab cua los nag lossis daus, cov dej noo ntawm cov khoom sib xyaw tuaj yeem hloov pauv sai, yog li kev ntsuas meej yog qhov tseem ceeb.
2. Sensitivity rau qhov kub thiab txias: Qhov sib txawv nruab hnub-hmo ntuj thiab kub hloov thaum sawv ntxov thiab yav tsaus ntuj yuav tsum tau xav txog. Cov dej, sib sau ua ke, thiab ntsuas kub yuav tsum tau tswj thiab yuav tsum tsis txhob siab tshaj 60 degree. Nyob rau lub caij ntuj sov kub, lub sijhawm thauj mus los thiab qhov kub thiab txias ntawm cov pob zeb sib xyaw yuav tsum tau saib xyuas, thiab kev ntsuas cua txias xws li tshuaj tsuag dej yuav tsum tau ua kom muaj kev sib xyaw ua ke. Nyob rau hauv lub caij ntuj no huab cua txias, lub slump yuav nce nrog lub sij hawm, thiab qhov qis kub yuav ncua lub sij hawm hydration cov tshuaj tiv thaiv thaum ntxov, uas yuav ua rau muaj teeb meem xws li pwm cracking los yog hnyav sib haum xeeb ntawm coarse aggregates, cuam tshuam lub homogeneity ntawm cov qauv.
3. rhiab heev rau Aggregate's Clay Content: Polycarboxylate superplasticizers yog rhiab heev rau cov av nplaum cov ntsiab lus nyob rau hauv aggregates. Raws li cov av nplaum cov ntsiab lus nce, qhov xav tau ntau npaum li cas ntawm superplasticizer nce. Yog li ntawd, aggregates nrog av nplaum ntsiab lus yuav tsum tau zam.
4. Cement thiab Additive Compatibility: Lub compatibility ntawm polycarboxylate superplasticizer nrog xis mas, lwm yam additives, thiab huab cua-entraining agents yuav tsum raug xam. Ntxiv cov tshuaj tiv thaiv-foaming kuj tseem yuav tsim nyog.
5. Kev thauj mus los thiab tuav ntawm qhov chaw tsim kho: Tom qab cov pob zeb tuaj txog ntawm qhov chaw tsim kho, yuav tsum tau saib xyuas kom tsis txhob ncua kev thauj mus los. Qhob nrog polycarboxylate superplasticizer nyiam poob nws cov yas sai dua tom qab 2 teev piv rau naphthalene-based superplasticizers. Yog li ntawd, yuav tsum tau saib xyuas kom tsis txhob ua raws li cov khoom sib tov thiab tsim cov pob.
6. Ntxuav Cov Khoom Siv Thauj Tsheb: Ua ntej txhua qhov khoom xa tuaj, lub pob zeb sib tov yuav tsum tau muab ntxuav kom sai, thiab cov dej seem yuav tsum tau muab tshem tawm. Nws raug txwv tsis pub sib xyaw polycarboxylate superplasticizer ua vaj tse nrog rau lwm hom kev sib xyaw, xws li naphthalene-based superplasticizers, vim qhov no tuaj yeem ua rau muaj zog sai thiab lwm yam teeb meem txawv txav. Tom qab hloov mus rau polycarboxylate superplasticizer, tus neeg tsav tsheb yuav tsum muab cov khoom siv ntxiv ntawm naphthalene-raws li cov khoom siv, ntxuav lub tsheb, thiab rov ua dua tshiab nrog cov polycarboxylate superplasticizer tshiab.
7. Kev txiav txim siab cia: Polycarboxylate superplasticizer yuav tsum tsis txhob muab cia rau hauv cov thawv hlau. Nws yog qhov zoo tshaj plaws khaws cia rau hauv cov yas, stainless hlau, lossis enamel ntim. Yog tias siv lub thawv hlau, nws yuav tsum tau muab ntxuav kom huv si thiab sab hauv kho kom tiv thaiv corrosion.
8. Tsis txhob sib xyaw nrog lwm cov khoom xyaw: Polycarboxylate superplasticizer yuav tsum tsis txhob tov nrog lwm hom admixtures, vim qhov no yuav ua rau muaj teeb meem sai lossis lwm yam tshwm sim txawv txav.
9. Txhim kho lub zog: Qhov sib ntxiv ntawm polycarboxylate superplasticizer ho txhim kho lub zog thaum ntxov ntawm pob zeb, uas tuaj yeem pab txo qis lub sijhawm tsim kho.