1. Ib puag ncig tej yam kev mob
Qhov kub thiab txias yuav ua kom lub hydration thiab condensation ntawm cov cement, ziab thiab cua kom ceev cov dej evaporation. Yog li ntawd, lub cev qhuav dej yog ceev. Yog li cov khoom siv tiag tiag tuaj yeem raug coj los tsim awnings los npog aggregates; Ntxiv dej txhaj thaiv kom txo cov pob zeb kub thaum sib tov; Kho lub sijhawm ua haujlwm kom tsis txhob kub siab; Tank tsheb rwb thaiv tsev txheej thiab lwm yam kev ntsuas.
2, cement ntau yam thiab ntau npaum li cas
Kev siv cov cement ntau, ua rau cov pob zeb loj viscosity, tawg me me; Cement ntau npaum li cas tsawg dhau, cov cement slurry hauv qhov sib tov yog tsawg dhau, cuam tshuam rau kev ua haujlwm ntawm pob zeb, yooj yim los ntshav dej, cais tawm. Yog li kev sib tov sib xyaw yuav tsum xaiv cov cement tsim nyog.
3. Aggregation gradation thiab xuab zeb piv
Coarse aggregate gradation discontinuous yuav ua rau kev ua haujlwm tsis zoo ntawm qhov sib tov, yooj yim los ntshav dej, cais; Fine aggregate yog tuab dhau los ua rau kev ua haujlwm tsis zoo ntawm cov pob zeb zoo ib yam, nplua aggregate zoo dhau lawm, qhov tshwj xeeb ntawm qhov chaw nce ntxiv kom nqus dej. Nyob rau hauv tib txoj kev dej, lub cev qhuav dej yuav me me.
Tsis tas li ntawd, cov xuab zeb tus nqi tsawg dhau, tsis zoo sib sau ua ke, ua rau tsis zoo ntawm cov khoom sib tov; Cov xuab zeb tus nqi siab dhau lawm, cov nplua aggregate yog ntau, thiab nqus dej ntxiv. Tsis yog ib qho zoo rau kev tawg. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum nruj me ntsis tswj txoj hauv kev ntawm aggregate thiab xaiv cov xuab zeb tsim nyog.
4. Mineral admixtures
Qhov sib ntxiv ntawm cov ntxhia admixture yog qhov zoo los txhim kho kev ua haujlwm ntawm kev sib tov. Mineral admixture muaj pes tsawg leeg thiab microstructure ntawm hydration hardening ntawm cov pob zeb hauv kev txhim kho, plasma pob txha interface cheeb tsam optimization, txuas lub qhov yog airtight thiab refinement, ho txhim kho lub durability ntawm pob zeb, tab sis tus txheeb ze lagging ntawm hydration hardening ntawm ntxhia admixtures, yog li ib tug nruab nrab nqi ntawm ntxhia admixture los hloov ib feem ntawm cov cement ntxiv los pab txo qhov kub thiab txias, txhim kho lub zog ntawm cov pob zeb, tab sis kuj qeeb hydration hardening sib tov, Nws yog qhov zoo los tswj qhov kev sib tsoo. Tsis tas li ntawd, lub admixture plays lub pob bearing nyhuv nyob rau hauv lub pob zeb sib tov, uas kuj yuav txo tau lub cev qhuav dej ntawm cov pob zeb sib tov. Txawm li cas los xij, nyob rau hauv kev xaiv cov ntxhia admixtures, qhov zoo tshaj plaws admixtures nrog me me dej thov piv yuav tsum tau xaiv, uas yog du nyob rau hauv cov duab thiab tsis heev nyob rau hauv fineness.
5. Kev sib xyaw ua ke
Admixture yog suav tias yog ib qho ntawm cov kev ntsuas yooj yim tshaj plaws thiab zoo tshaj plaws los daws qhov teeb meem kev sib tsoo. Tam sim no, muaj ob txoj hauv kev los daws qhov kev puas tsuaj los ntawm qhov kev xav ntawm cov khoom sib xyaw. Ib qho yog txhawm rau txhim kho lub peev xwm khaws cia ntawm kev sib tsoo los ntawm niam cov qauv molecular, uas tau kawm ntau ntxiv hauv polycarboxylic acid dej-txo tus neeg sawv cev. Qhov thib ob yog ntau yam kev ua haujlwm admixtures. Cov khoom muaj txiaj ntsig zoo rau qhov kev sib tsoo tawg yog cov khoom tiv thaiv retarding, huab cua nkag mus rau hauv cov khoom, thickening tivthaiv thiab lub cev qhuav dej.
