Nrog rau kev txhim kho txuas ntxiv ntawm kev tshawb fawb thiab thev naus laus zis, ntau thiab ntau kev lag luam pib siv lub hnab ntim khoom, tshwj xeeb tshaj yog cov uas xav tau lub peev xwm loj tons ntawm lub hnab, kev siv tons ntawm lub hnab hauv peb lub tebchaws tau nthuav dav, thiab lawv tuaj yeem siv tau ob zaug.
Qhov thib ob siv ntawm cov thawv ntim khoom txuag cov peev txheej thiab ua kom siv tag nrho. Nyob rau hauv tag nrho cov hnab ntim khoom, yuav luag cov khoom loj no tuaj yeem siv ob zaug lossis ntau zaus, thiab nws yog qhov ua tau raws li qhov chaw tsis muaj kev puas tsuaj.
Vim tias qhov zoo thiab tus nqi ntawm cov khoom siv raw siv rau hauv cov khoom ntim loj no kim heev, ib zaug pov tseg yuav ncua kev siv tag nrho cov peev txheej, thiab ntau yam kev siv yog qhov sib xyaw ntawm peb cov txiaj ntsig kev sib raug zoo thiab kev siv cov peev txheej.
Vim nws lub zog tensile zoo, tus nqi qis, thiab kev thauj mus los yooj yim, tons ntawm lub hnab yog dav siv nyob rau hauv ntim cov cement, tshuaj raw cov ntaub ntawv, chiv, minerals, grain, qab zib, thiab lwm yam khoom siv hmoov, lub hnab ntim khoom no tau ua. nce xyoo los ntawm xyoo nyob rau hauv xyoo tas los no.
