Construction method for spraying building wall face with machine-made sand aggregate dry-mixed mortar

Abstract

The invention discloses a construction method for spraying the wall surface of a building with machine-made sand aggregate dry-mixed mortar, which comprises the following steps: wall surface base treatment; construction preparation; spraying construction; surface layer spraying; finishing; The dry-mixed mortar is stirred into a slurry, and the spraying machine sprays the mixed mortar slurry onto the base layer immediately. The whole process takes about 8 seconds from stirring to spraying; the process is completed by scraping when the mortar consistency is at its best and the workability is at its best; The thickness of 15mm is sprayed at one time; the spraying thickness of the surface layer is controlled to be consistent (about 8-10mm), and the shrinkage of the surface layer is kept consistent; the leveling and finishing processes are done before the final setting of the mortar; the problem of shortage of natural sand resources is effectively solved; the machine-made sand The efficiency of aggregate mortar spraying is 2 to 3 times higher than that of manual painting; machine-made sand mortar spraying finishes have excellent properties such as anti-cracking, no hollowing, no peeling, and high bonding strength; it overcomes the limitations of plastering in the prior art Common quality problems, improve the overall quality of architectural decoration.

Description

technical field [0001] The invention belongs to the field of public and civil buildings. More specifically, the invention relates to a construction method for spraying the wall surface of a building with machine-made sand aggregate dry-mixed mortar. Background technique [0002] The materials used in the interior wall plastering process are mainly mixed mortar and cement mortar. These two materials have strict requirements on the treatment of the base layer and the strength of each layer of mortar. Once one of the links is not strictly controlled, the plastering layer will be damaged. Hollowing, cracking, and peeling quality problems, in order to overcome the above defects, the prior art uses dry-mixed mortar, and performs dry-mixed mortar mechanical spraying and plastering, but this internal wall plastering process is difficult to form large-scale mechanical spraying; The reason is that natural sand resources are gradually exhausted, and construction sand dominated by natur...

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Problems solved by technology

[0002] The materials used in the interior wall plastering process are mainly mixed mortar and cement mortar. These two materials have strict requirements on the treatment of the base layer and the strength of each layer of mortar. Once one of the links is not strictly controlled, the plastering layer will be damaged. Hollowing, cracking, and peeling quality problems, in order to overcome the above defects, the prior art uses dry-mixed mortar, and performs dry-mixed mortar mechanical spraying and plastering, but this internal wall plastering process is difficult to form large-scale mechanical spraying; The reason is that natural sand resources are gradually exhausted, and construction sand dominated by natural sand is gradually replaced by machine-made sand. Compared with natural sand, machine-made sand has high water absorption rate, rapid loss of consistency, and easy segregation, which is not conducive to mechanical spraying construction.

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