A high-efficiency additive for machine-blasted mortar

Abstract

The invention discloses a high-efficiency additive for machine-sprayed mortar, which is composed of the following components in parts by weight: 40-60 parts by weight of water-retaining agent, 1-3 parts by weight of coagulation-adjusting enhancer, and 5-8 parts by weight of water-reducing agent 10-15 parts by weight of the anti-cracking agent, 0.1-0.8 parts by weight of the air-entraining agent, and 20-40 parts by weight of the filler. The invention uses powdery raw materials, is suitable for dry-mixed mortar, and has a wide application range; the machine-sprayed mortar added with the additive of the invention is easy to be applied to the wall, easy to be scraped, easy to receive light, has good crack resistance effect, and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of dry-mixed mortar, in particular to a high-efficiency additive for machine-sprayed mortar in the field of machine-sprayed mortar. Background technique [0002] The mechanized construction of ordinary mortar has been widely used in developed countries such as Europe and the United States, as well as neighboring countries such as Japan and South Korea, and has basically replaced manual construction. The reduction in labor intensity and the improvement in construction quality are very obvious. [0003] The construction method of mechanical spraying has gradually been recognized in China. However, due to the common shortcomings of domestic ordinary mortar such as poor water retention, poor thixotropy, short opening time, and poor adhesion to walls and other substrates, the promotion of mechanical spraying construction is particularly difficult. difficulty. [0004] With the extensive application of cellulose ...

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Problems solved by technology

[0003] The construction method of mechanical spraying has gradually been recognized in China. However, due to the common shortcomings of domestic ordinary mortar such as poor water retention, poor thixotropy, short opening time, and poor adhesion to walls and other substrates, the promotion of mechanical spraying construction is particularly difficult. difficulty

[0004] With the extensive application of cellulose ether in ordinary mortar, the quality of ordinary mortar has improved, creating favorable conditions for mechanical spraying construction, but it is still unacceptable to most enterprises due to its high cost

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