High-strength compound cement aeolian mortar

Abstract

The invention relates to desert aeolian sand and in particular relates to a modified high-strength compound cement aeolian mortar product. The modified high-strength compound cement aeolian mortar provided by the invention is prepared from the following components in parts by weight: 100 parts of aeolian sand, 40 to 55 parts of a gel material, 16 to 27.5 parts of water, 6 to 14 parts of a water reducing agent, 0.5 to 2 parts of a water retaining agent and 0.5 to 6 parts of an air entraining agent, wherein the water-gel ratio is 0.4 to 0.5. The high-strength compound cement aeolian sand mortarprovided by the invention takes aeolian sand in the Alxa region as aggregate, Mengxi cement of Inner Mongolia and local abundant fly ash resources as the gel material and a novel additive as a modifying agent; the sand mortar has excellent working performance and has good durability, freezing and thawing resistance, anti-permeability and shrinkage performance; the dosage of cement is less and thecost is low; construction requirements can be completely met.

Description

technical field [0001] The invention relates to desert aeolian sand, in particular to a modified high-strength composite cement aeolian mortar product. Background technique [0002] my country is in the stage of large-scale civil engineering infrastructure construction. Cement-based concrete is used as the most important building material because of its superior performance. It is widely used in civil engineering, highways, water conservancy, shipbuilding, machinery industry, marine development, geothermal engineering, etc. . According to statistics, in 2016, the annual concrete consumption in the world was about 10 billion tons, and the concrete consumption in my country accounted for more than 60% of the total concrete consumption in the world. With the increasing use of concrete year by year, the lack of concrete raw material resources has also become a very serious social problem. In addition, due to the serious uneven distribution of medium and coarse sand resources in...

AI Technical Summary

Problems solved by technology

It can be seen that most of the domestic research on aeolian sand is limited to partial replacement of aggregates, which cannot completely solve the application problem of aeolian sand in actual engineering.

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