Conditioning agent for segregated concrete and conditioning method thereof

Abstract

The invention provides a conditioning agent for segregated concrete and a conditioning method thereof. The conditioning agent can effectively recover the working performance of a segregated concrete mixture, wherein the conditioning agent comprises kaolin, limestone powder and dihydrate gypsum, the kaolin adopts low-quality kaolin calcined tailings, the mass fraction of the kaolin is 85-95%, the limestone powder is ground finely, the mass fraction of the limestone powder is 0-10%, and the mass fraction of the dihydrate gypsum is 5%. The conditioning method comprises the steps of determining the volume amount of the segregated concrete, determining the dosage of a gel material, determining the mixing amount and dosage of the conditioning agent, adding the conditioning agent and stirring. The slump loss and the setting time of the segregated concrete mixture doped with the conditioning agent by the regulating method are basically the same as those of normal concrete, and the strength ofhardened concrete is even slightly improved. It is proved that the conditioning agent has no obvious influence on the setting time and slump loss of the concrete, and on the contrary, the strength ofthe concrete can be improved.

Description

【Technical field】 [0001] The invention relates to a regulator for segregated concrete and a regulator method thereof. 【Background technique】 [0002] Concrete is made of cement as the main cementitious material, mixed with water, sand, stone, and chemical admixtures and mineral admixtures when necessary, mixed and mixed in an appropriate proportion to form a mixture, which is hardened after a certain period of time. . [0003] Concrete is the most widely used and used building material in the world today. Major advances in concrete engineering technology such as prestressed concrete structures and high-performance concrete admixtures represented by polycarboxylate superplasticizers have greatly promoted economic development and social development. improvement. Concrete is one of the key materials supporting the development of my country's engineering construction and plays an irreplaceable role in my country's infrastructure construction. At present, my country's annual co...

AI Technical Summary

Problems solved by technology

Once the quality of raw materials fluctuates greatly, it will easily lead to over-mixing of admixtures and the quality problem of concrete segregation.

At present, there is no good treatment method for concrete segregation caused by over-mixing of admixtures. Generally, it is returned to the factory for scrapping, which not only causes a serious waste of materials, but also causes environmental pollution.

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