Kev sib tham txog qhov cuam tshuam rau cov tshuaj cug

Lub tshuaj khib, feem ntau hu ua nws cov haujlwm lossis kev sib xws, yog qhov yooj yim ntau yam khoom siv, suav nrog yooj yim ntawm kev tso chaw, kev sib tw, thiab ua tiav. Ntau yam cuam tshuam txog cov tshuaj khib, thiab nkag siab txog cov khoom siv no yog qhov tseem ceeb rau kev ua tiav kev ua haujlwm zoo hauv kev tsim kho. Ntawm no yog kev sib tham ntawm qee qhov tseem ceeb cuam tshuam txog cov tshuaj khib nyiab:

1. Dej-rau-phau ntawv piv: Cov dej-rau-yog tus piv txwv (Maas, txiv qaub, lossis kev sib xyaw ua ke), cuam tshuam rau lub fluidity ntawm cug. Nce cov ntsiab lus dej tuaj yeem txhim kho kev ua haujlwm los ntawm kev txo viscosity thiab nce ntws ntws. Txawm li cas los xij, ntau dhau dej tuaj yeem ua rau cais, thiab txo qis zog, yog li nws yog qhov tsim nyog kom muaj kev ua kom muaj kev ua tau zoo ntawm lub tshuaj khib.
2. Hom thiab kev teeb tsa ntawm Aggregates: Hom, Loj, Cov qauv, thiab kev teeb tsa ntawm kev siv tshuaj tua kab cutural cuam tshuam rau nws cov khoom siv rheological thiab fluidity. Nplua sib xyaw ua ke, xws li xuab zeb, txhim kho kev ua haujlwm los ntawm sau voids thiab lubricating hais, thaum coarse agranates muab kev ruaj ntseg thiab muaj zog. Cov qhab nia sib txuas nrog cov kev faib tawm ntawm cov me me tuaj yeem txhim kho qhov ceev thiab kub ntawm cov nplaim hluavtaws thiab cohesion.
3. Particle loj faib: Qhov loj me faib cov khoom noj kom zoo nkauj thiab sib xyaw ua ke sib xyaw, interparthable kev sib txhuam, thiab kev ua yeeb yam ntawm cug. Finer hais tau sau voids ntawm cov khoom loj dua, txo cov txhuam tawm tsam thiab txhim kho cov nyom. Hloov siab, qhov dav dav hauv cov ntau thiab tsawg particle yuav ua rau muaj kev sib cais particle, cov kab ke tsis zoo, thiab cov khoom noj kom tsawg.
4. Tshuaj Admixtures: Tshuaj Admixtures, xws li cov dej reducers, rab roj hmab, thiab superplasticizers, thiab superplasticizers, thiab superplasticizers, thiab cov khoom siv rheological. Dej Reducers txo cov dej ntws kom zoo rau qhov tso quav tawm, txhim kho qhov tsis muaj kev cuam tshuam tsis muaj zog. Cov hnab yas txhim kho cohesion thiab txo cov viscosity, thaum superplasticizers muaj cov khoom hluav taws kub siab thiab kev coj ua tus kheej, tshwj xeeb hauv kev sib cog lus tus kheej.
5. Cov hom thiab muaj pes tsawg leeg: Hom thiab cov hom thiab kev sib xyaw ua ke, xws li kev sib xyaw ntawm cov txiv qaub, teeb tsa lub sijhawm, thiab rheological coj tus cwj pwm ntawm cug. Ntau hom xis mas (piv txwv li, Portland Maas thiab xwm yeem ntawm cov tog tshauv) tuaj yeem ua rau muaj kev sib xyaw ua ke hauv cov yam ntxwv me, thiab cov yam ntxwv hydring.
6. Nws cov txheej txheem thiab cov khoom siv: cov txheej txheem sib xyaw thiab cov cuab yeej siv los npaj tshuaj khib yuav cuam tshuam nws cov kua thiab homogeneity. Lub sijhawm ua kom zoo, suav nrog cov khoom sib xyaw tsim nyog, nrawm, yog qhov tseem ceeb ntawm kev ua tiav cov khoom sib txawv ntawm cov khoom xyaw thiab cov khoom siv hluav taws xob sib xws. Kev sib xyaw tsis raug cai tuaj yeem ua rau muaj kev cuam tshuam dej tsis txaus, thiab tsis muaj kev faib tawm hauv cov tshuaj ntsuab thiab kev ua tau zoo ntawm txoj kab khib.
7. Cov xwm txheej ib puag ncig: ib puag ncig cov khoom siv xws li kub, thiab cua ceev tuaj yeem cuam tshuam cov fluidity ntawm kev sib xyaw, thiab kev thauj mus los. Siab dua cov dej khov kho kom ceev thiab teeb tsa, txo qhov ua haujlwm thiab nce kev pheej hmoo ntawm cov yas shrinkage tawg. Tsawg qhov kub kuj tuaj yeem rov teeb tsa thiab txo qis ntawm cov nplaim, xav tau kev kho kom haum kom sib xyaw cov zauv sib piv thiab admixature Dosesages.

Lub fluidity ntawm cug yog los ntawm kev sib xyaw ntawm cov ntaub ntawv ntsig txog cov ntaub ntawv, sib xyaw tsim qauv, cov txheej txheem sib tov, thiab ib puag ncig cov xwm txheej. Los ntawm ua tib zoo xav txog cov xwm txheej thiab ua kom zoo dua cov kws tshaj lij, muaj peev xwm ua tiav cov tshuaj cug nrog cov kev xav tau zoo, sib xws, thiab kev ua haujlwm rau cov ntawv thov tshwj xeeb thiab phiaj xwm.