Mechanically sprayed dry-mixed plastering mortar

Abstract

The invention discloses a mechanically sprayed dry-mixed plastering mortar, which is composed of the following components by weight: 12-22% of cement, 5-10% of fly ash, 40-50% of baked sand less than 5mm, 28-35% of mining powder, and 1-3% of mortar modifier. The mechanically sprayed dry-mixed plastering mortar is suitable for a mechanically sprayed interior-wall plastering engineering, and is different from the traditional plastering mortar due to the addition of the fly ash and the mining powder; when the mortar is used for a novel wall material and other substrates, the wall can be not soaked, an interface agent can be not coated in advance, the maintenance is unnecessary after completion, the wall surface processed with the mortar has the characteristics of no hollowing, no crack and water resistance, the mortar can be used for the interior and exterior walls, the construction is easy, and the construction speed is increased by 50% than that of the site mixed mortar.

Description

technical field [0001] The present invention relates to rendering mortar. Background technique [0002] Common mortars used in the prior art have the following disadvantages: [0003] 1. Plastering mortar manually mixed on site tends to cause unstable quality, and it is difficult to control the use time. Water is often added on site to increase plasticity, resulting in a decrease in the quality of the slurry; [0004] 2. It often requires a lot of base surface watering or interface treatment, mechanical construction is not possible, the labor intensity is high, the construction efficiency is low, and it is highly dependent on the construction personnel's technology. It is prone to drop deformation and multi-layer construction, which requires watering and maintenance ; [0005] 3. High shrinkage, often cracks, loose structure, easy to leak, weak adhesion to the bottom layer, high hollowing rate; [0006] 4. The adhesion is poor, the materials are easy to scatter during con...

AI Technical Summary

Problems solved by technology

[0003] 1. Plastering mortar manually mixed on site tends to cause unstable quality, and it is difficult to control the use time. Water is often added on site to increase plasticity, resulting in a decrease in the quality of the slurry;

[0004] 2. It often requires a lot of base surface watering or interface treatment, mechanical construction is not possible, the labor intensity is high, the construction efficiency is low, and it is highly dependent on the construction personnel's technology. It is prone to drop deformation and multi-layer construction, which requires watering and maintenance ;

[0005] 3. High shrinkage, often cracks, loose structure, easy to leak, weak adhesion to the bottom layer, high hollowing rate;

[0006] 4. The adhesion is poor, the materials are easy to scatter during construction, the water retention capacity is poor, and it is easy to cause water loss, air-drying, and waste. It is necessary to store a variety of raw materials on the construction site and require a large storage space. It takes extra time to transport the mortar to the construction site. processes and procedures;

[0007] 5. A large amount of scattered waste is left in the process of mixing, storage and construction, and the dust is large, requiring a lot of labor to clean up the dry and hard slurry remaining on the construction site