Multipurpose convenient cement

Abstract

The invention relates to multipurpose convenient cement. The multipurpose convenient cement is composed of the following raw materials in parts by weight: 20-50 parts of cement, 41.9-66.65 parts of dry sand, 2-10 parts of calcium carbonate, 0.1-0.5 part of cellulose ether, 0.5-4.5 parts of redispersible latex powder, 0.05-0.1 part of an anti-skid auxiliary agent, and 0.1-0.5 part of starch ether. The product is prepared by screening natural sand, washing with water and sending to a baking rotary furnace to baking the natural sand to form dry sand, then pouring the above raw materials into an electric dry mixer according to the above ratios, stirring, after 10 min, conveying the uniformly-stirred raw materials into a material storage tank and packaging by a packager. The cement is environment-friendly, and has the fluidity, the volume density, the water retention property, the water-adsorption gas content, the plastic cracking property, the dry shrinkage, the compressive strength, the rupture strength, the adhesive strength, the flexibility, the impact resistance and the like all substantially better than those of common cement dry-mixed products.

Description

technical field [0001] The invention relates to a building material, in particular to a multi-purpose convenient cement. Background technique [0002] Against the background of accelerated domestic urbanization and the gradual maturity of international contracting business, my country's construction industry has broad prospects for development. The raw materials for construction, such as cement and sand, also developed accordingly. In modern society, with the development of cities and the improvement of people's living conditions, residential buildings are gradually developing to high-rise buildings. If you use the previous cement mortar, because of its poor water retention and viscosity, you need a thick layer of mortar and a large load, so you need a new type of cement material. Keep up with architectural development needs. Now the mortar used in the construction industry is made by mixing cement, sand and water on site. This kind of mortar has the following defects. One...

AI Technical Summary

Problems solved by technology

Now the mortar used in the construction industry is made by mixing cement, sand and water on site. This kind of mortar has the following defects. One, it needs to use manual or equipment to transport cement sand to the room and then mix it. A lot of labor is wasted like this and work efficiency is low

Second, the water retention capacity of the mortar is poor. When laying tiles indoors, the tiles need to be soaked or pre-wetted before use.

Third, the traditional cement mortar is operated on the construction site, and the natural sand is screened on site, so that it has not been washed with water, and the soil content is large, which affects the strength of the cement and produces a large amount of construction waste

In addition, the measurement at the construction site is inaccurate, resulting in problems such as cracking, hollowing, shedding, leakage, dust and sand on the ground, and high construction repair rate.