Concrete pumping antifreezing agent with adjustable performances

Abstract

The invention relates to a concrete pumping antifreezing agent with adjustable performances, belonging to the field of building materials. The concrete pumping antifreezing agent comprises the following materials by weight percent: 28% -42% of water reducing agent, 0.3%-0.7% of air entraining agent, 0.05%-0.07% of fluidizing reagent, 1.5%-2.5% of reinforcing agent and 2.0%-3.0% of antifreezing agent, 1.5%-5.0% of slump loss inhibitor and 45%-65% of water, and the concrete pumping antifreezing agent is a novel pumping antifreezing agent and does not contain any chloride. The concrete pumping antifreezing agent is simple in production process, does not contain alkali and chlorine, and cannot corrode a steel bar. The concrete pumping antifreezing agent has the advantages that the peaceability of concrete is improved substantially, the volume is stable, the water-reducing rate is high, the anti-freezing performance is high, the early-strength performance is obvious, the increasing value of the later-stage concrete strength is high, the adaptability is good, and the like, and has good pumpability in the construction. The concrete pumping antifreezing agent is low in cost, good in performance and has good economical benefits and social benefits.

Description

technical field [0001] The invention relates to a concrete pumping antifreeze agent with adjustable performance, which is suitable for commercial concrete and pumping concrete used in winter construction, and belongs to the field of building materials. Background technique [0002] In large-scale construction projects, not only modern construction technology and construction methods are required, but also technical performance requirements of various functions are put forward for concrete. For example, commercial concrete for winter construction and pumped concrete for high-rise buildings require concrete to have antifreeze properties, such as large flow state, good slump retention, early strength, and good reinforcement effect, in order to maintain their good working performance. Especially the early strength can shorten the time of concrete insulation and maintenance and reduce the cost. In different environmental projects, according to different functional needs, winter ...

AI Technical Summary

Problems solved by technology

The biggest defect of the pump antifreeze is that it cannot be used in prestressed reinforced concrete projects

Antifreeze compounded with naphthalene-based water reducer, sulfamate water reducer and other antifreeze components, the water reducing rate is not very high, and the volume stability is poor

Single-component pumping agent, although the pumping effect is good and the volume is stable, but the antifreeze performance and early strength performance are poor

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