Thaum dai cov phab ntsa nrog cov vuas, nws yuav tsum txiav txim siab seb cov kua nplaum twg yog qhov zoo tshaj plaws rau cov pobzeb, vim nws nyob ntawm cov khoom siv los ntawm cov pobzeb yog, ntawm nws qhov ntev, ntawm hom ntsa uas nws yuav raug mounted thiab rau kev khiav hauj lwm rau cov neeg mob. Nyob ntawm seb lub cev nqus tau li cas, qhov hnyav thiab qhov loj npaum li cas ntawm cov pobzeb, kev txiav txim siab yog ua rau cov kua nplaum uas lo nplaum.
Hom kua nplaum rau cov vuas
Qhov zoo ntawm cov kua nplaum rau cov pobzeb, lees tias nws zoo siab, nws yog qhov ua tau zoo, ua kom zoo, muaj peev xwm los tiv thaiv kev nyuaj siab thaum tsim tau lub hauv paus thiab lub pobzeb nws tus kheej.
Qhov tseem ceeb tshaj plaws nyob rau hauv kev xaiv qhov zoo tshaj plaws kua nplaum rau cov vuas muaj qhov chaw ntawm nws daim ntawv thov: nws yuav ua tau rau chav dej, chav ua noj, lub sam thiaj, thiab cov vuas siv tau rau kev siv lub qhov cub. Nyob ntawm seb qhov twg cov pobzeb siv, ib qho kua nplaum tshwj xeeb yog xaiv, nqa mus rau hauv tus lej tshwj xeeb.
Glutinous sib tov rau cov pobzeb tau muab faib ua peb ntau yam:
- ib qho kev sib tov sib xyaw ua kom haum (conventional cement mix) uas siv tau rau hauv chav qhuav thiab ntub dej, nrog rau sab nrauv thiab sab hauv, ( chav kawm C1 );
- Txhim kho kab ke nrog lwm cov yeeb yam, xws li elasticity, tsis kam hloov mus rau qhov kub hloov, siab cua tshuab. Xws li cov kua nplaum tuaj yeem tiv taus, yuav siv tau rau cov vuas tawm hauv pem teb hauv chav dej ( chav kawm C2 );
- pab pawg neeg thib peb muaj xws li cov khoom cua sov ua kom tsis sov siab rau pobzeb , siv rau qhov cub tawg, qhov cub. Cov pab pawg no muaj cov tshuaj tiv thaiv kev tiv thaiv thiab cov cua uas tiv taus cov kab mob.
Qhov nrov tshaj plaws, qhov tseeb yog qhov zoo tshaj plaws, cov kua nplaum xim hom "Kilto", "Knauf", "Unis", "Ceresit".