Dab tsi yog qhov cuam tshuam ntawm Air Entrainment Agent rau kev ua tau zoo ntawm pob zeb?

Qhov cuam tshuam ntawm Air-Entraining Agents ntawm Cov Khoom Siv Tshiab Tshiab

Air-entraining agents tuaj yeem hloov kho qhov ua tau zoo ntawm cov pob zeb tshiab.

Air-entraining agentsqhia ntau tus me me thiab ywj pheej huab cua npuas rau hauv pob zeb. Cov npuas kheej kheej no ua zoo li pob bearings, zoo heev txhim kho kev ua haujlwm ntawm cov pob zeb. Qhov ntim ntawm cov muab tshuaj ntau ntxiv thiab cov nyhuv lubricating ntawm qhov sib tov, nrog rau qhov nce viscosity thiab cov txiaj ntsig kev ntxhov siab ntawm cov muab tshuaj, ua rau muaj kev ua haujlwm zoo dua qub, plasticity, thiab cohesiveness ntawm huab cua-entrained qhob piv rau cov pob zeb uas tsis yog cua-entrained. Lub micro-npua tau qhia los ntawm tus neeg saib xyuas huab cua ua haujlwm zoo li cov khoom sib xyaw zoo, them nyiaj rau cov khoom tsis zoo, tshwj xeeb tshaj yog thaum cov khoom tsis zoo, ua rau cov pob zeb zoo li nplua nuj nyob hauv mortar. Cov npuas no txhawb nqa thiab cais cov cement particles, sau cov voids ntawm lawv, yog li thaiv lossis txo cov dej ntws ncig ntawm cov cement thiab aggregate particles, thiab txo cov ntshav, kev sib haum xeeb, thiab kev sib cais ntawm cov pob zeb. Tsis tas li ntawd, qhov "rolling" lossis "dispersing" cov nyhuv ntawm cov npuas no ua rau kom qhov chaw dawb (tsis yog-cohesive) ntawm cov cement los yog nplua aggregate, txhim kho qhov sib tov viscosity thiab workability.

Nyob rau hauv unchanged raw khoom proportions,air-entrainment tuaj yeem txhim kho cov flowability ntawm pob zeb. Rau tib qhov slump, pob zeb nrog cov neeg ua haujlwm huab cua nthuav tawm zoo dua paste workability, flowability, plasticity, castability, thiab compactability piv rau cov pob zeb tsis muaj cua nkag. Cua-entrainment kuj tuaj yeem txo qhov kev xav tau ntawm cov dej sib tov. Ntxiv mus, huab cua nkag tuaj yeem txo qhov poob qis ntawm cov pob zeb tshiab.

Nrog rau kev nce qib ntawm kev tsim kho thev naus laus zis thiab kev tsim kho kev xav tau ntawm cov tsev siab siab, lub twj tso kua mis ntawm cov pob zeb tau dhau los ua qhov tseem ceeb.Pumpabilityyog ib tug tshwj xeeb manifestation ntawm zoo pob zeb workability. Cua-entrainment tsub kom lub cohesiveness thiab lubricating nyhuv ntawm cov ntaub ntawv, txo segregation thaum lub sij hawm siv thiab yog li txhim kho lub pumpability ntawm tshiab pob zeb. Txawm li cas los xij, cov ntsiab lus ntawm cov pa hauv cov twj tso kua mis yuav tsum tsis txhob siab dhau, vim tias cov ntsiab lus huab cua ntau dhau ua rau muaj qhov tsis txaus, ua rau muaj kev tsis txaus ntseeg, nce twj tso kua mis siab, thiab txo cov twj tso kua mis. Cov ntsiab lus huab cua ntawm cov pob zeb no feem ntau pom zoo kom tsawg dua 6%. Vim yog cov laj thawj no, cov pob zeb hauv av tau siv dav hauv kev siv dej thiab cov pob zeb loj, nrog rau hauv txoj kev thiab lwm cov haujlwm hauv kev tsim vaj tsev, txawm tias nyob hauv ib puag ncig yam tsis muaj dej khov lossis de-icing ntsev. Hauv cov pob zeb ntshiv, cov pob zeb qhuav qhuav, cov pob zeb sib xyaw ua ke, thiab cov pob zeb sib xyaw ua ke sib sib zog nqus, huab cua nkag tuaj yeem txhim kho kev ua tau zoo thiab ua kom muaj txiaj ntsig zoo ntawm cov neeg ua haujlwm huab cua.

Qhob Pumpabilitytsis yog tsuas yog cuam tshuam nrog kev poob qis, tab sis kuj rau lub siab los ntshav ntawm pob zeb. Raws li cov xwm txheej zoo ib yam, txo cov ntshav txhais tau tias txhim kho cov twj tso kua mis. Yog li ntawd, yuav luag tag nrho cov twj tso kua mis nyob rau hauv txawv teb chaws thiab Shanghai muaj huab cua-entraining Cheebtsam.