High-strength lightweight concrete building block and method of manufacture

Abstract

The invention discloses lightweight concrete building blocks, which comprise (by weight ratio) cement 10-30 wt%, air-entrainer 0.1-0.5 wt%, the amount of the water reducer is 0.25-1.5 wt% of the cement, the amount of the decrement agent is 0.25-1.5 wt% of the cement, the weight ratio of coarse aggregate is 30-70%, and balancing coal ash. The invention also discloses its preparing process.

Description

technical field [0001] The invention relates to a building material and a manufacturing method thereof, in particular to a high-strength lightweight concrete block and a manufacturing method thereof. Background technique [0002] With the improvement of people's awareness of the environment and resources and the country's wall reform policy, especially the requirements of building energy conservation, lightweight concrete products have widely replaced traditional clay solid bricks and solid concrete products. Lightweight concrete products not only do not produce waste water, waste gas and other pollutants in the production process; the main raw materials are solid industrial waste; and have the characteristics of light weight, good thermal insulation performance, sound insulation and noise reduction, and good fire resistance. , The priority industry during the "Eleventh Five-Year Plan" period. [0003] The basic raw materials of lightweight concrete are cement, lime, water,...

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Problems solved by technology

However, the patented process is complicated, the cost is high, the quality of the product is difficult to control, the shrinkage rate of the product is large, and the masonry is easy to crack