Pumping agent for concrete

Abstract

The invention relates to a pumping agent for concrete, and belongs to the technical field of concrete pumping agents. The pumping agent for concrete is characterized by consisting of the following components in part by weight: 10 to 20 parts of polycarboxylic acid water reducer, 5 to 15 parts of polycarboxylic acid slump retaining agent, 5 to 10 parts of saccharide sodium, 1 to 2 parts of air entraining agent and 1 to 2 parts of defoaming agent. The pumping agent has the advantages of high adaptability to concrete, stable quality, environment friendliness, convenience for use, reliable process, convenience for operate, high production efficiency, suitability for industrial production and the like, and the blended concrete has excellent pumpability and can meet various engineering requirements.

Description

technical field [0001] The invention belongs to the technical field of concrete pumping agent, in particular to a pumping agent for concrete. Background technique [0002] At present, the general concrete is poured by pumping technology at the construction site. Therefore, the concrete needs to have good fluidity and pumpability. However, since the concrete in the mixing station is transported from the mixing station to the construction site by a concrete mixer truck, once Traffic jams or long distances, the time for mixing the concrete is too long, and the fluidity will be severely lost and cannot be pumped. At present, most of the water-based concrete pumping agents on the market are formulated with one-component water reducer and retarder, so there are the following disadvantages: poor cement adaptability, usually only suitable for a few cement varieties, poor fluidity, low temperature in winter Crystals and precipitates are precipitated under certain conditions, causing...

AI Technical Summary

Problems solved by technology

[0002] At present, the general concrete is poured by pumping technology at the construction site. Therefore, the concrete needs to have good fluidity and pumpability. However, since the concrete in the mixing station is transported from the mixing station to the construction site by a concrete mixer truck, once Traffic jams or long distances, the mixing time of the concrete is too long, the fluidity will be seriously lost and cannot be pumped

At present, most of the water-based concrete pumping agents on the market are formulated with one-component water reducer and retarder, so there are the following disadvantages: poor cement adaptability, usually only suitable for a few cement varieties, poor fluidity, low temperature in winter Crystals and precipitation are precipitated under certain conditions, causing pipeline blockage and cannot be used normally. At the same time, the quality is extremely unstable and the slump loss is rapid.

The existing pumping agent, due to the above various technical problems in the use of concrete, seriously affects various concrete projects.

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