Concrete capable of not dispersing in water

Abstract

The concrete without dispersion in water is produced with the materials including coarse aggregate; powder of cement and Pozzolan material or inert material without cementing property; water; and cohesion force increasing agent, such as polyacrylamine. One kind of self-filling concrete for water use with even higher performance is also provided, which is compounded with coarse aggregate, fine aggregate, cohesion force increasing agent, and water reducing agent, and may be used in filling reinforcing bar interval, densifying and raising strength. The present invention reveals also the design program and compounding process of the concrete without dispersion in water and the self-filling concrete for water use. The present invention has stable quality and proper strength, and is suitable for use in underwater engineering.

Description

technical field [0001] The invention relates to a kind of non-dispersible concrete in water, in particular to a kind of non-dispersible concrete in water with a slump of 5 cm to 27.5 cm by adding a cohesive force enhancer; especially a kind of self-filling in water with good self-filling performance ( Self-compacting) concrete with a slump value of 400-750mm and appropriate strength (strength between 140-630kgf / cm 2 ). The invention has extremely stable quality and proper strength, which not only meets the requirements of self-filling performance, but also does not cause turbidity and separation of water, and can be widely used in underwater and river and sea projects. Background technique [0002] Commonly used traditional underwater concrete is nothing more than increasing the amount of cement and powder and limiting its water-cement ratio (should not be greater than 0.5) as its design appeal. Even if it is transported and poured with a special dense pipe, its quality and...

AI Technical Summary

Problems solved by technology

Although this type of concrete in water has the characteristics of self-leveling, it is not very perfect, such as too long initial setting time, poor early strength, prolonged form removal time, slow flow speed and more expensive price, etc., especially the nature of work and Currently known workability standards for self-filling concrete (SCC) are still a long way off

[0003] This shows that above-mentioned existing concrete in water obviously still has inconvenience and defect in structure and use, and urgently needs to be further improved

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously related. The problem that the industry is eager to solve

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