Cov yam ntxwv ntawm polycarboxylate superplasticizer

Hauv ntau qhov kev tsim vaj tsev ua vaj tse, cov pob zeb ua kom muaj txiaj ntsig zoo xws li naphthalene series nce zuj zus tuaj yeem ua tsis tau raws li kev xav tau ntawm engineering vim muaj kev txwv hauv kev ua haujlwm. Cov tiam tshiab ntawm cov dej reducers, polycarboxylate raws li kev ua tau zoo ntawm cov dej reducers, uas tau nyiam ntau yam hauv tsev thiab txawv teb chaws, tau tsim nrog cov qauv zoo molecular raws li cov txheej txheem ntawm cov cement dispersed. Lawv yog cov dispersed heev thiab tuaj yeem tiv thaiv kev poob qis yam tsis ua rau muaj kev cuam tshuam loj. Lawv nthuav tawm cov teebmeem plasticizing siab ntawm cov khoom siv tsawg, kev tuav tswj tau zoo, kev hloov pauv dav rau cov cement, kev ywj pheej loj hauv cov qauv molecular, ntau yam khoom siv thev naus laus zis, thiab chav zoo rau kev ua haujlwm siab. Lawv muaj qhov cuam tshuam tseem ceeb ntawm cov pob zeb, tuaj yeem txo cov pob zeb me me, thiab muaj cov khoom tsis zoo. Cov yam ntxwv ntawm kev ua tau zoo no ua rau cov pob zeb zoo nkauj nrog kev tsim kho thiab yooj yim, kev txhim kho lub zog zoo, kev ua haujlwm zoo heev, thiab polycarboxylate raws li kev ua haujlwm siab dej reducers muaj kev ua haujlwm zoo thiab kev tiv thaiv ib puag ncig. Ua tau raws li cov kev xav tau ntawm niaj hnub pob zeb engineering. Yog li ntawd, polycarboxylate raws li kev ua haujlwm siab dej reducers tau maj mam dhau los ua cov khoom siv ntxiv rau kev npaj cov pob zeb ua haujlwm siab. Raws li cov lus ceeb toom, kev siv polycarboxylate admixtures nyob rau hauv Nyij Pooj tso nyiaj ntau dua 80% ntawm tag nrho cov khoom siv ua haujlwm siab, thiab North America thiab Europe kuj suav txog ntau dua 50%. Hauv Suav teb, polycarboxylate superplasticizers tau ua tiav tsuas yog hauv kev txuag dej loj hauv tebchaws, choj, nuclear fais fab, thiab kev tsheb ciav hlau xws li Peb Gorges Dam, Sutong Choj, Tianwan Nuclear Power Plant, thiab Beijing Shanghai High Speed ​​​​Railway, thiab muaj. ua tiav cov txiaj ntsig tseem ceeb.