Plastering anti-crack waterproof mortar and preparation method thereof

Abstract

The invention relates to the field of concrete, and particularly discloses plastering anti-crack waterproof mortar and a preparation method thereof. The mortar comprises 280-314 parts of cement; 1100-1320 parts of sand; 66-78 parts of stone powder; 6.5-8.1 parts of an admixture; 0.8-1.3 parts of polypropylene anti-cracking fibers; 8.9-11.7 parts of a waterproof agent; 36-48 parts of coumarone resin; 28-42 parts of aluminum dihydrogen phosphate; 185-215 parts of water; the preparation method comprises the following steps: sequentially mixing and stirring the raw materials of the mortar to obtain the mortar. The coumarone resin is cracked and shrunk under the high-temperature condition, so that the high-temperature expansion efficiency of the plastering mortar is relieved, the high-temperature bonding strength of the aluminum dihydrogen phosphate is improved, and the phenomena of bulging and cracking occurring after a mortar fire disaster are improved.

Description

technical field [0001] The application relates to the field of building materials, more specifically, it relates to a plastering anti-cracking waterproof mortar. Background technique [0002] With the advancement and development of grassroots construction and urbanization, the demand for plastering mortar used in building decoration projects is also increasing. Plastering mortar is a type of plastering mortar used to level or protect the base surface of the building Mortar, collectively referred to as mortar, is suitable for decoration of interior and exterior walls, cover surfaces, bottom surfaces, ceiling plastering, etc. of construction and decoration projects, and plays a protective and beautifying role. [0003] At present, plastering mortar generally does not have the performance of heat resistance and fire prevention. When a fire breaks out in a building, the temperature of the wall surface will change due to the fire. The temperature expands, and it is easy to produ...

AI Technical Summary

Problems solved by technology

[0003] At present, plastering mortar generally does not have the performance of heat resistance and fire prevention. When a fire breaks out in a building, the temperature of the wall surface will change due to the fire. The temperature expands, and it is easy to produce bulges or cracks, which is difficult to meet the higher actual engineering needs. The durability of the plastering mortar is not high, and the wall after the fire needs to be repaired in a large area, which is not economical and environmentally friendly.