Cov chav kawm, lossis lub npe ntawm pob zeb, yog qhov tseem ceeb tshaj plaws thiab qhov taw qhia tseem ceeb ntawm qhov zoo ntawm cov sib tov, uas koj yuav tsum ua tib zoo saib thaum yuav khoom. Qhov taw qhia ntawm kev mus ncig, kev tiv thaiv te thiab dej tsis kam ua yeej ib txwm tso rau tom qab.
Tsim nyog
tus txheej txheem ua vaj tsev nrog lub laij cov hoob muaj zog
Cov Lus Qhia
Kauj ruam 1
Lub zog ntawm cov qhob yog qhov ntsuas tsis paub meej, nws tuaj yeem suav thaum kawg tsuas yog tom qab ua tiav ntawm qhov ua kom tiav, thiab cov txheej txheem no kav ntev li 28 hnub. Tsuas yog tom qab ntu no tuaj yeem tsim tus qauv lossis xam lub zog txiav txim.
Kauj ruam 2
Qhov tseem ceeb siv nyob rau hauv kev tsim kho yog xam los ntawm qib 100, 200, 300, 400, 500. Cov chav kawm muaj zog ncaj qha nyob ntawm qhov sib piv ntawm cov xis mas nyob hauv qhov sib tov npaj. Cov kab ntau xws li ntawm 7, 5 txog 40; puv - los ntawm B 3, 5 txog B 80.
Kauj ruam 3
Koj cov ntaub ntawv npaj ua haujlwm, kos duab los ntawm tus kws tshaj lij tus kws tshaj lij kom tau daim ntawv pom zoo lub tsev, yuav tsum qhia meej qib qib uas xav tau rau kev ua haujlwm hauv pob zeb thiab cov pob zeb. Txawb pob zeb ua kev sib tov raws li cov kev ntsuas no.
Kauj ruam 4
Txheeb xyuas seb cov pob zeb tiag puas tau ua tiav chav tshaj tawm, ua lub thawv me me ntsuas 15x15x15. Moisten pwm, nchuav cov pob zeb sib tov sib xyaw, hno nws nrog ib qho ntxiv ntawm kev txhawb nqa. Tso cov pwm kab hauv chav tsev nrog qhov kub txog 20 degrees thiab av noo txog 90%. Hu rau qhov chaw kuaj tsev ywj siab tom qab 28 hnub. Kuaj cov pob zeb ntsuas yuav raug ntsuas nrog lub tshuab sclerometer uas siv lub plawv dhia, ultrasonic thiab txoj kev rhuav tshem.
Kauj ruam 5
Yog tias koj yuav cov pob zeb ua tsis muaj kev kuaj xyuas, ces nco ntsoov tias lub tuam txhab hwm nws tus kheej yuav ib txwm tsim cov khoom sib tov raws li cov yam ntxwv tau tshaj tawm. Cov qeb muaj zog tshaj plaws yuav ua los ntawm 800 Portland cement, uas sib haum rau chav B 60, lub zog nruab nrab ntawm cov pob zeb ua tiav yog 786 kgf / cm2. Hom pob zeb no yog siv rau ntau lub tsev. Qhov qis tshaj plaws ntawm cov pob zeb ua tiav yog Portland cement M50 nrog chav kawm B 3, 5 thiab lub zog 46 kgf / cm2.
Kauj Ruam 6
Txog kev tsim lub tsev ntawm ib-zaj dab neeg, nws txaus los siv hom npe ntawm Portland cement M400, chav kawm B30 nrog lub zog ntawm 393 kgf / cm2.
