Super-retarding efficient pumping agent and application thereof

Abstract

The invention discloses a super-retarding efficient pumping agent. The super-retarding efficient pumping agent is applied to concrete. The newly developed super-retarding efficient pumping agent is used for replacing the existing common retarding pumping agent, the invention further discloses a preparation method of the super-retarding efficient pumping agent, and the concrete admixture is prepared by compounding the following components in percentage by weight: 2.0 to 10.0 percent of sodium gluconate, 1.0 to 5.0 percent of white sugar, 0.5 to 1.0 percent of amino trimethylene phosphonic acid,0.1 to 0.2 percent of air entraining agent, 0.1 to 0.5 percent of building grade temperature wheel glue, 20.0 to 50 percent of aliphatic water reducing agent, 20 to 50 percent of naphthalene water reducing agent and the balance of clear water. According to the invention, the water-reducing rate of concrete is ensured, according to the super-retarding efficient pumping admixture, the setting timeof concrete is required to be prolonged to 60 hours or above, the later strength of the concrete cannot be affected, and in order to meet the requirements of a secant pile construction process, a common retarding admixture cannot meet the requirements during concrete stirring, the super-retarding efficient pumping admixture is specially prepared.

Description

technical field [0001] The invention relates to the field of concrete admixtures, in particular to a super retarded high-efficiency pumping agent. Background technique [0002] In the hot summer mass concrete construction and bored occlusal pile projects, a large amount of concrete is poured continuously. For example, in some projects, it is required that the pile body concrete of the bored piles that have been poured in the previous stage be able to Carry out a proper amount of drilling so that the subsequent construction of the drilled piles and the pre-constructed bored piles are interlocked into a whole. Based on these special needs in the construction, it is required that the setting time of the concrete be extended to more than 60 hours, and the post-construction of the concrete should not be affected. In order to meet the requirements of this kind of construction technology, ordinary retarding admixtures can no longer meet the requirements when concrete is mixed. Co...

AI Technical Summary

Problems solved by technology

[0002] In the hot summer mass concrete construction and bored occlusal pile projects, a large amount of concrete is poured continuously. For example, in some projects, it is required that the pile body concrete of the bored piles that have been poured in the previous stage be able to Carry out a proper amount of drilling so that the subsequent construction of the drilled piles and the pre-constructed bored piles are interlocked into a whole. Based on these special needs in the construction, it is required that the setting time of the concrete be extended to more than 60 hours, and the post-concrete construction should not be affected. In order to meet the requirements of this type of construction technology, ordinary retarding admixtures can no longer meet the requirements when concrete is mixed.

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