Nov yog cov qauv dav dav los suav cov hnab ntim khoom:
Number of Bags=(Volume of Concrete in Cubic Meters) / (Volume of One Bag of Concrete in Cubic Meters)
Tam sim no, cia peb tawg qhov kev suav:
Txiav txim siab qhov sib tov:Piv txwv li, yog tias koj siv qhov sib xyaw ua ke ntawm 1: 2: 3, nws txhais tau tias koj muaj ib feem ntawm cov cement, ob seem xuab zeb, thiab peb qhov sib xyaw ua ke los ntawm ntim.
Xam qhov ntim ntawm cov khoom sib xyaw:Yuav kom nrhiav tau tag nrho cov ntim ntawm qhov sib tov, koj yuav tsum tau ntxiv qhov ntim ntawm txhua qhov sib xyaw raws li qhov sib tov sib xyaw. Yog tias tag nrho qhov sib xyaw ua ke yog 1 ntxiv 2 ntxiv rau 3=6 ntu, ces:
Ntim ntawm Cement=(1/6) * 1 cubic meter
Ntim ntawm Sand=(2/6) * 1 cubic meter
Ntim ntawm Aggregates=(3/6) * 1 cubic meter
Txiav txim siab qhov ntim ntawm ib lub hnab 20kg ntawm cement:Qhov ntim no yuav nyob ntawm qhov ntom ntawm cov cement. Cement ceev tuaj yeem sib txawv, tab sis nws feem ntau yog nyob ib ncig ntawm 1,400 kilograms ib cubic meter (kg / m³). Yog li, qhov ntim ntawm ib lub hnab 20kg ntawm cement yog kwv yees li:
Ntim ntawm Ib Lub Hnab Cement=(20 kg) / (1,400 kg/m³)=0.01429 cubic meters
Xam cov naj npawb ntawm lub hnab:Tam sim no, koj tuaj yeem siv cov qauv los nrhiav cov naj npawb ntawm lub hnab:
Number of Bags=(Volume of Cement) / (Volume of One Bag of Cement)
Tus nab npawb ntawm lub hnab {{0}} [(1/6) * 1 cubic meter] / (0.01429 cubic meters/bag)
Number of Bags ≈ 41.67 hnab
Yog li, koj yuav xav tau kwv yees li 41.67 hnab ntawm 20kg cement los ua 1 cubic meter ntawm pob zeb nrog 1: 2: 3 mix ratio, piv txwv li cov cement ntom ntawm 1,400 kg / m³. Txij li thaum koj tsis tuaj yeem yuav ib feem ntawm ib lub hnab, koj yuav xav tau mus txog rau tus lej ze tshaj plaws, uas txhais tau tias koj xav tau 42 lub hnab. Nco ntsoov tias qhov kev suav no yog nyob ntawm cov kev sib xyaw tshwj xeeb thiab cov cement ntom ntom; sib txawv mix ratios thiab cement hom yuav tawm los sib txawv.
