1. Lub luag haujlwm dav dav ntawm cov cement mortar yog ua kom cov txheej txheem txheej txheem;
2. Cov cement lossis mortar ru tsev kuj yog siv los nrhiav txoj kab nqes;
3. Thaum muab cov vuas hauv pem teb, nws yuav ua lub luag haujlwm ntawm kev nplaum, thiab cov vuas hauv pem teb los yog cov vuas yog ruaj khov rau hauv lub hauv paus txheej;
4. Thaum ua cov txheej txheem prefabricated, yog tias qhov tuab ntawm kev tsim kho me me, cov cement mortar tuaj yeem tiv thaiv cov hlau tuav ntawm nws cov txheej tiv thaiv kom tsis txhob xeb;
5. Muab cov hmoov dej tsis muaj dej rau hauv cov cement mortar los ua kom muaj dej tsis zoo.