A kind of preparation method of high-strength concrete

Abstract

The invention discloses a preparation method of high-strength concrete. The preparation method comprises the following steps: (1) preparing raw materials: taking cement, gravel, water, a water reducer, phenolic fiber and montmorillonite, wherein the gravel is obtained by crushing building wastes through a crushing device; (2) carrying out dry mixing: adding the cement, the gravel, the water reducer, the phenolic fiber and the montmorillonite into a mixer and carrying out dry material pre-mixing; after uniformly mixing, obtaining a mixture A; (3) carrying out wet mixing: putting the mixture A into a stirrer and adding the water and fine aggregate into the stirrer; then uniformly mixing to prepare slurry-shaped concrete. According to the preparation method disclosed by the invention, dry mixing operation is carried out before the wet mixing, so that dry powder type materials have higher mixing uniformity in a mixing process and various materials are mixed together.

Description

Technical field [0001] The invention belongs to the field of construction technology, and particularly relates to a method for preparing high-strength concrete. Background technique [0002] A large amount of sand and gravel are needed in the preparation process of concrete. Due to the shortage of sand and gravel resources, people have begun to use gravel obtained from crushing construction waste to replace sand and gravel to meet the demand for sand and gravel in construction projects. However, the existing crushing method is difficult to achieve fine crushing of construction waste. It usually requires multiple crushing processes to obtain smaller crushed stone, which takes a long time to process and low work efficiency; and requires the use of multiple different processing equipment. The equipment investment cost is high and the energy consumption is large; and the final pass rate of the crushed stone is low, which is difficult to meet the needs of processing high-quality concr...

AI Technical Summary

Problems solved by technology

However, the existing crushing methods are difficult to achieve fine crushing of construction waste. Usually, multiple crushing processes are required to obtain small crushed stones, which takes a long time to process and low work efficiency; and requires the use of multiple different processing equipment. The cost of equipment investment is high and energy consumption is high; and the qualified rate of the final crushed stone is low, which is difficult to meet the needs of processing high-quality concrete; and the strength of concrete prepared by traditional methods is low, which affects the firmness of buildings

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