A:
Qhob yog lub pob zeb ntawm cov tsev. Qhov zoo ntawm kev txiav txim siab txiav txim seb lub tsev tiav tiav yog ruaj khov. Muaj ntau ntau yam uas cuam tshuam rau qhov zoo ntawm cov pob zeb. Ntawm lawv, ntsuas kub thiab av noo yog cov teeb meem loj tshaj plaws. Txhawm rau kom kov yeej cov teeb meem no, cov pab pawg tsim kev tsim kho feem ntau siv cov pa rau cov pob zeb ua kom zoo thiab ua tiav.
Lub hom phiaj tseem ceeb ntawm chav yog txhawm rau txhim kho lub zog tawv ntawm cov qhob. Qhob tu yog ib qho tseem ceeb tshaj plaws ntawm cov txheej txheem kev tsim kho thiab muaj feem cuam tshuam nrog kev tsim kho ntawm tag nrho cov haujlwm. Txoj haujlwm kev loj hlob tam sim no tau txais sai dua thiab sai dua kev tsim kho cov haujlwm tau ua ntau dua thiab tsim ntau dua rau cov qhob kuj tseem nce.
Yog li ntawd, kev kho vaj tse saib xyuas yog qhov teeb meem tam sim no tam sim no. Tom qab cov qhob yog nchuav, vim li cas nws tuaj yeem ua tau yooj yim thiab tawv tawv yog vim yog cov dej ntawm cov cement. Kev tswj hwm cov dej nruab nrab uas tsim nyog kub thiab cua noo tej yam. Yog li ntawd, txhawm rau xyuas kom meej tias cov pob zeb muaj cov mob hnyav, nws lub zog yuav txuas ntxiv ntxiv. , qhob yuav tsum tau kho.
Qhob ntsej muag hauv lub caij txias
Qhov zoo tshaj plaws kub rau kev ua vaj tse moulding yog 10 ℃ -20 ℃. Yog tias cov pob zeb tshiab poured yog nyob rau hauv ib puag ncig hauv qab 5 ℃, cov pob zeb ua kom khov. Qhov khov yuav nres nws cov kev dej thiab cov qhob nraus yuav ua crispy. Kev ploj ntawm lub zog, kev tawg loj tuaj yeem tshwm sim, thiab qib ntawm detheration yuav tsis rov qab yog tias kub nce siab.
Kev tiv thaiv nyob rau hauv qhov chaw kub thiab qhuav
Yo dej noo yog yooj yim heev rau kev sib xws nyob hauv qab kom qhuav thiab muaj huab cua sov. Yog tias qhob poob ntau dhau, lub zog ntawm cov pob zeb ua rau nws cov nplaim hluav taws xob tau yooj yim. Nyob rau lub sijhawm no, qhuav shrinkage cracks yog nquag tshwm sim, uas yog tsuas yog cov kab nrib pleb yas tawg los ntawm kev ua pob zeb ua ntej. Tshwj xeeb tshaj yog thaum lub caij tsim kev tsim kho nyob rau lub caij ntuj sov, yog tias cov kev tswj xyuas tau ua tiav, uas tsis yog ua rau muaj kev tsim kho, tab sis kuj tseem ceeb tshaj plaws yog ua kom tau tus qauv hauv txoj kev no. Tag nrho cov khoom tau zoo tag nrho tsis tuaj yeem lav.
Nob yuav kho cov chav tsim hluav taws xob hluav taws xob ua kom muaj zog thiab cov av noo ib puag ncig kom ua tiav thiab ua kom zoo dua qub thiab kev nce qib ntawm kev tsim kho.
Lub Sijhawm Post: Nov-01-2023
