Gypsum mortar

The main results are as follows: 1. The problems of empty drum, crack and shedding of plastering layer are basically solved. At the same time, the plastering period is shortened, and the efficiency is 1.5-2 times higher than that of the traditional cement mortar plastering process. 2. The bulk density of plaster paste and cement lime paste are 1 / L and 1.7 / L, respectively. When the plastering thickness is the same as 13 / L-14', 1t plaster paste can be smeared 75%-80%, while cement-lime mixture paste can only apply 45%-48'. The results show that: 1 t plaster paste can smear 75%-80% plaster paste, while cement-lime mixture paste can apply 45%-48% cement lime paste at the same thickness of 13%-14% plaster paste. 3. The labor quota of 100 inch high-quality decorative wall is 83.4 hours for gypsum and 167.2 hours for cement and lime mixtures, and the labor quota for gypsum and cement-lime mixtures is 83.4 hours and 167.2 hours respectively, and the labor quota required for technological operation is 83.4 hours for gypsum mixtures and 167.2 hours for cement-lime mixtures. Compared with gypsum mortar, a large number of operating procedures help to save about twice the labor consumption. 4. The technology of gouging on the concrete surface can be avoided and the plastering period can be shortened at the same time. 5. Decorating on the plaster mortar cover can save decorative paint and laminating glue, for example, the general 106 coating for the wall is 0.3 "/"-0.5 "/", while the 106 coating for the plastering gypsum wall is 0.2 "/"-0.3 "/". 6. Plaster gypsum mortar has early strength and fast hardening, which is suitable for grabbing the construction period. 7. Gypsum mortar has strong bonding performance, which basically eliminates void, cracks and reduces rework. 8. There is less ground ash during the construction of gypsum mortar, which reduces the waste of materials and cleaning labor. 9. Gypsum is more suitable for construction in winter than mortar cement paddle, which can save a lot of heat preservation cost in winter construction. 10. Gypsum mortar is a grade A fireproof material, which can improve the fire prevention, sound insulation and heat preservation of buildings. 11. The sales price of gypsum mortar seems to be expensive, but in engineering application, the comprehensive cost is not higher than that of traditional plastering materials. For example, the thickness of plaster layer of gypsum mortar can be less than 3mm, while the thickness of cement mortar should be above 6mm-8mm.