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NederlandsKev xau ntawm cov suab paj nruag yog ze ze rau kev siv cov xwm txheej sib txawv. Qhov loj dua cov cement hais, qhov me me ntawm qhov chaw, qhov kev ua haujlwm qis dua, qhov me me qhov shrinkage tus nqi thiab siab dua qhov kub ntawm cremation. Lub shrinkage tus nqi ntawm Portland cement zoo tib yam yog qis dua li ntawm slag cement, ya tshauv cement, bauxite cement thiab ceev-quenching cement, thiab cua sov ntawm cremation yog qis dua li. Sandstone shrinkage tus nqi nce thiab cov av nkos nce. Qhov loj dua qhov sib sau ua ke, qhov me me ntawm cov xuab zeb thiab qhov me me ntawm qhov shrinkage. Qhov loj dua qhov sib piv ntawm cov dej-cement, qhov ntau dua qhov shrinkage tus nqi, qhov ntau dua qhov kev txhawb zog, qhov me me ntawm qhov shrinkage. Feem ntau, Portland cement zoo tib yam tau siv dav, tab sis kev cuam tshuam ntawm cov peev txheej ntuj thiab ib puag ncig yog hloov los ntawm lwm cov ntaub ntawv nyob rau hauv ntau qhov chaw, thiab cov dej xau tau tshwm sim rau qee qhov.
1. Formwork thiab reinforcement binding tsis ua raws li cov kev cai ntawm kev specifications.
2. Txhawm rau kom yooj yim rau kev tsim kho, cov pob zeb yuav tsum tau ntxiv rau cov pob zeb thaum lub sij hawm ua vaj tse pob zeb los txhim kho kev ua hauj lwm thiab fluidity ntawm cov pob zeb. Lub slump yuav muaj zog, lub viscosity txo, lub zog thiab impermeability txo, thiab cov pob zeb solidifies thiab solidifies tiag.
3. Nyob rau hauv lub pob zeb pouring project, lub vibrator tsis yog siv los vibrate lub pob zeb, yog li ntawd lub internal compactness ntawm cov pob zeb yog tsis txaus, ua rau lub shrinkage thiab shrinkage ntawm ib tug loj tus naj npawb ntawm honeycombs los yog qhov nyob rau hauv lub rear phab ntsa ntawm cov pob zeb. .
4. Tsis muaj yim steel tuav nyob rau sab phab ntsa thiab hauv qab phaj ntawm waterscape, ua rau muaj kev ntxhov siab concentration thiab instability.
5. Qhov chaw sib cuag ntawm cov khoom siv dej hauv cov kav dej thiab cov pob zeb tsis zoo vibrated thiab compacted, thiab nws yog ib qho yooj yim los tsim cov kab nrib pleb me me ntawm qhov chaw sib cuag.
