High-fluidity pumping ceramsite concrete and preparation method thereof

Abstract

The invention provides high-fluidity pumping ceramsite concrete and a preparation method thereof. A formula of the concrete comprises cement, coal ash, water, fine aggregate, limestone flour, pumping aid, ceramsites, ceramic sand, redispersable emulsion and hydroxypropyl methyl cellulose. The method comprises the following steps: reasonably selecting respective raw materials and usage thereof according to a unit weight of concrete to be prepared, soaking the ceramsites to a saturated water absorption state in advance, then mixing with other raw materials, and stirring to prepare the ceramsite concrete. By controlling the grain size of the ceramsites and a fineness modulus of the fine aggregate, the redispersable emulsion and hydroxypropyl methyl cellulose are cooperatively added to promote the cementation of the cementing materials such as the cement, the coal ash and the limestone flour with the ceramsites, and the cohesiveness and water retaining property of the concrete are increased, and the problems of easy floating, layering and separation of the ceramsites in the ceramsite concrete are effectively solved, moreover, separation and layering of the ceramsites can be effectively avoided by using the ceramsite concrete produced according to the invention, and slump loss in a material transporting and waiting process is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of ceramsite concrete production, in particular to a high fluidity pumping ceramsite concrete and a preparation method thereof. Background technique [0002] With the reform of wall materials, building energy saving is becoming more and more important, and the design and application of walls are mainly sustainable development in the direction of light weight, good energy saving and thermal insulation performance, high strength, high durability, and high safety. Therefore, compared with ordinary concrete, ceramsite concrete, which has good workability, high strength and light weight, fire resistance, self-insulation, moisture-proof and sound insulation, volume stability and durable safety, has attracted more and more attention and recognition in engineering applications. Good economic and social benefits have been achieved in reducing the weight of the structure, saving the amount of materials, comprehensivel...

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a high-fluidity pumped ceramsite concrete and its preparation method, which is used to solve the problem of ceramsite concrete being easy to float when pumping in the prior art, Delamination, segregation, easy agglomeration of concrete, pipe plugging, etc.