Preparation and application of superfine powder concrete

Abstract

The invention provides superfine powder concrete which is composed of water, cement, superfine powder fly ash, medium sand and a water reducing agent. The water reducing agent is an aromatic sulfamate polymer. The fly ash superfine powder is doped into the concrete, so that the working performance and the mechanical performance of the concrete can be improved, more importantly, the early strength and the later strength of the concrete can be improved, and the 20-day setting strength of the concrete exceeds the conventional later strength of common concrete; the service life of the structure is prolonged, the annual cost of engineering is reduced, energy and resources are saved, the environment is protected, and huge technical economic benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of making high-performance composite materials for buildings, and in particular relates to the preparation and application of superfine powder concrete. Background technique [0002] Concrete is a general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. Concrete has the characteristics of rich raw materials, low price and simple production process, so its consumption is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability, and a wide range of strength grades. These characteristics ma...

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Problems solved by technology

If a large amount of fly ash is not controlled or treated, it will cause air pollution, and if it enters the water, it will silt up the river, and some of the chemical substances will cause harm to organisms and humans.

[0006] Therefore, thoroughly controlling pollution and turning fly ash into treasure is a serious issue that nature has proposed to us. At present, due to technical limitations, the large-scale reuse of fly ash has not achieved a major breakthrough. Therefore, it is necessary to put forward Improvement At the same time, due to the serious pollution of ordinary concrete, in recent years, the traditional concrete industry is also changing to a green high-performance direction, which reduces environmental pollution, so it needs to be improved urgently

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