Cov pob zeb ua pob zeb feem ntau yog siv los sau cov qib siab - theem lub hauv paus ntawm lub tsev, vim nws lub teeb yuag, suab rwb thaiv tsev, zoo thermal rwb thaiv tsev nyhuv, feem ntau ntawm cov neeg siv kev ntseeg siab thiab nyiam. Cov khoom siv raw li hauv qab no: Cement: cement ua a
Qhob thaiv tshuab, tseem hu ua pob zeb ua tshuab, yog cov cuab yeej tseem ceeb hauv kev tsim kho kev lag luam. Lawv tau tsim los tsim cov pob zeb ua tau zoo thiab tsis tu ncua. Cov tshuab no tau hloov zuj zus mus rau lub sijhawm, kev sib koom ua ke siab heev t
Cov pob zeb ua pob zeb yog cov khoom siv tseem ceeb hauv kev tsim kho kev lag luam thiab kev tsim cov blocks no yuav tsum tau siv cov tshuab tshwj xeeb xws li cov cement thaiv ua tshuab thiab thaiv cov tshuab xovxwm. Cov tshuab no ua lub luag haujlwm tseem ceeb hauv
Thaiv cov tshuab tau hloov pauv kev tsim kho kev lag luam los ntawm kev ua kom cov khoom loj ntawm cov khoom zoo - zoo pob zeb. Kev ua tau zoo, sib xws, thiab nrawm muab los ntawm cov tshuab no yog qhov tseem ceeb rau kev ua kom tau raws li qhov xav tau ntawm kev tsim kho