Quick setting and rapid hardening non-shrinkage anti-disturbance self-compacting concrete and preparation method thereof

Abstract

The invention relates to quick setting and rapid hardening non-shrinkage anti-disturbance self-compacting concrete and a preparation method thereof. Raw materials contain the following ingredient (by weight): 100-450 parts of cement, 20-70 parts of gypsum, 150-450 parts of fine aggregate, 200-600 parts of crude aggregate, 10-30 parts of fly ash, 10-50 parts of heavy calcium powder, 10-50 parts of silica fume, 10-50 parts of slag powder, 10-50 parts of quartz powder, 1-5 parts of a water reducer, 0.1-0.8 part of cellulose ether, 0.05-1.0 part of a retarder, 0.1-1.0 part of a coagulation accelerator, 0.5-2.0 parts of an antifoaming agent, 0.5-2.05 parts of an early strength agent, 0.5-5.0 parts of an expanding agent, 1.0-5.0 parts of a shrinkage reducing agent, 0.2-1.0 part of anti-crack fiber, and 50-200 parts of water. Through an optimum mixture ratio and by the use of a polycarboxylate superplasticizer, the early strength agent and other additives, properties such as early strength, disturbance rejection, crack resistance, durability, self-compaction and the like of concrete are greatly enhanced, and disadvantages of low early strength, long time interval of initial set and final set and the like of common concrete are solved.

Description

Technical field [0001] The invention relates to a fast-setting, fast-hardening, non-shrinkage, disturbance-resistant, self-compacting concrete and a preparation method thereof, and belongs to the engineering technical field of bridges, roads, railways and other concretes of different thicknesses requiring rapid repair and maintenance. Background technique [0002] Concrete is one of the most important civil engineering materials in modern times, and it is also the most widely used man-made building material in the world. It is widely used in highways, railways, bridges, tunnels and underground projects. With the rapid economic development, the traffic flow in various places is also increasing, the load of cars and vehicles has increased, and some cars are overloaded, and environmental erosion. The diseases of roads, bridges and tunnels made of concrete have become more and more serious, which can no longer meet the current traffic requirements. , There is an urgent need for timel...

AI Technical Summary

Problems solved by technology

[0006] In order to achieve the above technical purpose, the present invention greatly improves the early strength, anti-disturbance, crack resistance, durability and self-compacting properties of concrete by optimizing the ratio and using admixtures such as high-efficiency water reducer and early strength agent, and solves the problem of Ordinary concrete has the disadvantages of low early strength, long interval between initial setting and final setting, etc.

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