High-strength concrete mixture, preparation method thereof and concrete

Abstract

The invention relates to the field of concrete, and particularly discloses a high-strength concrete mixture, a preparation method thereof and concrete. The preparation method of the high-strength concrete mixture comprises the following steps: step 1) stirring and uniformly mixing water, cement and a retarder under the action of ultrasonic waves to obtain plain cement slurry; 2, adding an aggregate into the plain cement slurry and mixing to be uniform, and obtaining a concrete mixture, wherein the mass ratio of the cement to the retarder is 1: (0.014-0.016). The method has the advantage that the utilization rate of the cement is increased.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a high-strength concrete mixing material, a preparation method thereof and concrete. Background technique [0002] Concrete is one of the modern building materials. It has the characteristics of high plasticity in the early stage and stable structure in the later stage. It is very suitable for the construction of various buildings. [0003] The main components of concrete are cementitious material and aggregate. The cementitious material is usually mainly cement. After contacting with water, the cement will undergo hydration reaction to form a plastic colloid. The colloid will bond the aggregate. After a period of time, The hydration reaction products entangle with each other to form a network, which makes the plasticity of concrete decrease, the fluidity gradually disappears, and finally forms a hard solid. Therefore, the compressive strength of concrete mainly depends on the stability o...

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Problems solved by technology

[0004] However, in the process of cement production, calcination is required, which will release a large amount of harmful waste gas and seriously pollute the environment. Therefore, increasing the strength of concrete by increasing the amount of cement will further increase environmental pollution. In fact, cement is in the process of hydration. In the process, it is easy to have some cement particles that are not dispersed, so that the surface of the cement particles is hydrated to form cement stones, but there is still a large amount of unhydrated cement inside, so that the utilization rate of cement is not high. Therefore, by increasing the utilization rate of cement, there is no need to increase The amount of cement can also increase the strength of concrete. Therefore, the utilization rate of cement in the process of preparing the existing concrete is low, so there is still room for improvement

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