Ntawm cov pob zeb tiv thaiv khov kev sib deev yog taw tes rau cov pob zeb ua kom muaj kev siv kom raug tom qab ntau zaus khov thaw voj voog, tsis txhob rhuav tshem, kev siv kuj tsis txo qhov kev ua tau zoo.
Kev cuam tshuam ntawm cov dej-cement piv rau Frost tsis kam ntawm cov pob zeb yog raws li hauv qab no: Ua ntej, qhov sib piv ntawm cov dej-cement yog loj heev, thiab cov dab dej ntawm cov aggregate nrog cov particle loj sib txawv yog txawv nyob rau hauv cov txheej txheem vibrating, uas ua rau lub stratification ntawm aggregate. slurry thiab aggregate, ntau cement slurry ntab rau ntawm qhov chaw, tsis zoo hnav tsis kam, thiab nto yaig ntawm pob zeb yog yooj yim los tsim thaum nws puas los ntawm khov-thaw. Yog li ntawd, nyob rau hauv lub siab txias, tshwj xeeb tshaj yog nyob rau hauv lub freezing ib puag ncig nrog dej sib cuag, cov dej-cement ratio ntawm pob zeb yuav tsum tau txo kom tsim nyog los txhim kho lub freezing kuj. Qhov thib ob, qhov loj thiab qhov sib txawv ntawm cov pob zeb ua npuas txo nrog qhov txo qis ntawm cov dej-cement piv, thiab nce nrog qhov nce ntawm dej-cement piv. Nyob rau hauv cov ntaub ntawv ntawm cov huab cua zoo sib xws, qhov loj ntawm cov dej-cement piv yog, qhov loj ntawm qhov chaw ntawm npuas yog, thiab qhov phem tshaj qhov Frost tsis kam ntawm pob zeb yog. Thaum kawg, nrog kev nce ntawm cov dej-cement piv, tag nrho cov ntim thiab qhov aperture ntawm lub qhov hauv cov pob zeb tau txais loj dua thiab loj dua, thiab cov dej khov o thiab osmotic siab generated nyob rau hauv lub freezing thiab thawing txheej txheem yog loj, thiab Frost tsis kam. ntawm pob zeb yog inevitably txo.
