Txoj kev tsim kho ntawm micro-silica hmoov hauv pob zeb yog dab tsi?

Rau kev sib xyaw tsim ntawm ya tshauv pob zeb, lub hom phiaj tseem ceeb ntawm kev txiav txim siab txoj kev sib tov, qhov nyiaj ntawm cov hmoov tshauv ya, qhov kev pom zoo ntawm cov dej reducer, thiab cov xuab zeb thiab pob zeb hloov kho raws li qhov xav tau. Kev tsim qauv sib xyaw tuaj yeem ua tiav siv cov qauv kev sib xyaw ua ke sib xyaw.

a) Fly tshauv incorporation method:Muaj ob txoj hauv kev tseem ceeb rau kev sib xyaw cov tshauv ya mus rau hauv cov pob zeb: kev sib xyaw nrog sab hauv thiab kev sib xyaw sab nraud. Internal mixing yuav hloov ib feem ntawm cov cement nrog yoov tshauv, qhov twg qhov hloov pauv yog txiav txim siab raws li qhov sib npaug ntawm lwm cov ntaub ntawv cementitious, thaum sib xyaw sab nraud yuav ntxiv cov tshauv ya raws li cov khoom sib cais. Tus nqi hloov pauv yog li ntawm 5% mus rau 30%, nrog rau cov dej-cement piv feem ntau tsis hloov pauv. Hauv qhov sib piv, kev sib xyaw sab nraud yog hais txog kev ntxiv cov tshauv ya tom qab cov dej sib tov tau hloov kho yam tsis tau txo cov cement ntau npaum li cas, nrog rau qhov sib ntxiv feem ntau nyob ib ncig ntawm 5% mus rau 10%. Qhob nrog rau sab nraud sib xyaw ya tshauv feem ntau muaj cov khoom siv zoo dua qub, txawm tias nws yuav tsum muaj cov khoom siv cementitious ntau dua.

b) Qhov zoo tshaj plaws ntawm cov hmoov tshauv yafeem ntau yog tswj los ntawm 8% mus rau 10%. Qhov no yog txiav txim siab raws li lub cev lub cev ntawm cov tshauv ya ya thiab lwm yam ntaub ntawv raw, thaum tseem xav txog cov kev qhia thiab kev lag luam uas cuam tshuam nrog kev sib xyaw ua ke.

c) Kev noj zaub mov zoo ntawm cov dej txo qis:Thaum siv cov hmoov tshauv ya hauv cov pob zeb, yog siv cov dej txo qis thiab cov khoom sib tov yuav tsum muaj kev ua haujlwm zoo, cov dej-cement ratio yuav tsum tau kho. Yog tias cov pob zeb tsis muaj zog ntxiv, qhov no txhais tau hais tias cov dej reducer tsis tau ua kom zoo nrog cov hmoov tshauv ya, ua rau tsis ua haujlwm ntxiv lossis lub zog. Yog tias cov ntsiab lus dej tau nce ntxiv nrog cov dej reducer, qhov sib tov tseem yuav ua haujlwm zoo ib yam lossis siab dua tab sis tsis muaj kev txhim kho cov pob zeb ua kom muaj zog, qhia tias cov dej reducer tsis tau siv tag nrho. Feem ntau, tus nqi ntawm cov dej reducer yuav tsum khaws cia li ntawm 1% los ntawm qhov hnyav ntawm cov ntaub ntawv cementitious hauv ib txwm ua vaj tse, thiab cov hmoov tshauv ya yuav tsum nyob rau hauv 2% mus rau 3%.