Because the mortar is easy to harden in the air, hardening and then construction will affect the performance of the mortar, so the construction personnel in the mixing, need to determine the amount according to the construction speed. In general, the mortar that has been mixed should be used up within 3 hours, and the time should be shortened if the environment is very dry or the temperature is very high.When mixing mortar, you need to determine the proportion of mortar according to the use of mortar, and strictly follow the proportion of materials, to ensure the ease of mortar. As there are many types of cement, and the quality of cement produced by different manufacturers varies, so the specific proportion needs to be based on the manufacturer’s requirements.
- Gypsum solves the problems of hollowing, cracking and peeling of the plaster layer, and also effectively shortens the plastering period, improving the efficiency by 1.5~2 times than the traditional cement mortar plastering construction process.
- The construction area of lightweight plaster is larger than that of cement mortar. The weight of gypsum is 1kg/L-1.3kg/L, while the weight of cement mortar is 1.7kg/L-1.8kg/L. When the thickness of plastering is 13-14mm, the plastering area of gypsum can be up to 75-80 square meters, while the area of cement mortar is 45-48 square meters.
- When the same construction of 100 square meters of wall surface, fixed and quantitative, the labor quota of gypsum is 83.4h, and the labor quota of cement mortar is 167.2h. The difference between the two is nearly double the labor consumption.
- Gypsum surface construction can save the concrete surface layer chiseling process, shorten the plastering period.
- Lightweight plastering gypsum has less ash on the ground during construction, which can reduce the waste of construction materials and ground cleaning.
- Cement mortar has good compatibility, strong adhesion, high strength after hardening of the mortar layer, the surface is not easy to be scratched, and the price is relatively affordable.
- Cement mortar needs to be strictly by the proportion of materials, strict requirements on the construction process, otherwise it is easy to appear hollow drum, cracking and other problems.
- When the cement mortar is under construction, the grass-roots level should be kept flat and dense, no unevenness, no sand.
- During the construction of cement mortar, water must be poured to the grass-roots level one day in advance in order to make the surface more moist and make the surface layer and the grass-roots level become more solid. Cement mortar in the construction process, must choose mechanical mixing, but also pay more attention to the proportion of sand and other dosage, especially the amount of water, pay special attention to its mixing time, can not be less than 2 hours, otherwise it will lead to uneven mixing of cement mortar, affecting the construction quality.
- Gypsum mortar is mainly used for wall leveling, fast-setting, so it is very suitable for projects in a hurry, but also to eliminate drums and cracking, reducing the chance of rework.
