Kev tsim kho kev lag luam tso siab hnyav rau cov khoom siv superplasticizers
Mar 28, 2023
Kev tsim kho kev lag luam vam khom rau cov khoom siv superplasticizers zoo, xws li polycarboxylate ether (PCE) txhawm rau txhim kho kev ua haujlwm thiab lub zog ntawm pob zeb. PCE-based superplasticizers tam sim no tau hloov cov tshuaj naphthalene sulfonate-raws li ib txwm muaj vim lawv cov kev ua tau zoo dua thiab tsis muaj kev cuam tshuam ib puag ncig.
Txhawm rau kom ntseeg tau tias qhov ua tau zoo, PCE-based superplasticizers yuav tsum tau txhaj tshuaj thiab sib xyaw hauv cov proportions meej nrog dej thiab lwm yam khoom ua vaj tse. Kev npaj thiab tuav cov khoom sib xyaw ua ke no yuav tsum muaj kev paub tshwj xeeb thiab khoom siv. Txhawm rau ua kom yooj yim cov txheej txheem, qee cov tuam txhab tsim khoom ua ntej PCE-raws li niam cawv tsim los siv los ua cov ntaub ntawv hauv paus rau cov khoom sib xyaw ua ke.
Ib qho piv txwv ntawm xws li PCE-raws li niam cawv yog qhov ua tau zoo polycarboxylate superplasticizer tsim. Cov khoom yog cov kua ntshiab, tsis muaj xim uas tuaj yeem yooj yim tov nrog dej thiab Portland cement los tsim cov khoom sib xyaw nrog cov khoom ntws zoo heev thiab txo cov dej-rau-cement piv.
Qhov zoo ntawm kev siv cov cawv niam no hauv kev tsim kho muaj ntau heev. Ua ntej, nws tso cai rau kom yooj yim thiab meej npaum li cas thiab sib xyaw ntawm PCE-based superplasticizer, yog li txo qhov kev pheej hmoo ntawm overdosing lossis qis dua. Thib ob, kev ua haujlwm siab ntawm niam cawv ua rau muaj zog, ruaj khov ua vaj tse, nrog kev txhim kho kev tiv thaiv kom shrinkage, tawg, thiab tshuaj tua kab mob. Thaum kawg, qhov qis viscosity ntawm niam cawv ua kom yooj yim tuav thiab tso cai rau kev thauj mus los thiab khaws cia.
Hauv kev xaus, kev siv PCE-based superplasticizers yog lub tswv yim tseem ceeb rau kev txhim kho kev ua tau zoo ntawm cov pob zeb hauv kev tsim kho. Qhov muaj cov khoom lag luam zoo niam xws li polycarboxylate superplasticizer muab cov cuab yeej muaj txiaj ntsig zoo rau kev ua kom zoo rau kev siv tshuaj thiab kev sib xyaw ua ke thiab ua tiav cov txheej txheem zoo, ruaj khov.