Concrete pumping antifreezing agent with adjustable performances

A concrete pump and antifreeze technology, applied in the field of building materials, can solve the problems of antifreeze performance, poor early strength performance, low water reduction rate, poor volume stability performance, etc., achieves good antifreeze effect, improves impermeability, Good early strength enhancement effect

Active Publication Date: 2012-07-25
BAOTOU ANSHUN NEW BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Concrete pumping antifreezing agent with adjustable performances
  • Concrete pumping antifreezing agent with adjustable performances
  • Concrete pumping antifreezing agent with adjustable performances

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The invention includes: naphthalenesulfonate formaldehyde condensation product water reducer, sulfamate water reducer, sodium lauryl sulfate air-entraining agent, tributyl fat fluidizing agent, sodium silicate strengthening agent, methanol antifreeze , Sodium sugar slump loss inhibitor.

[0021] The proportioning of various materials by weight percentage is:

[0022]

[0023] The pumping antifreeze obtained in this example is mixed into concrete for use, and the dosage accounts for 2.0% of the cementitious material, and its performance is given in Table 1.

[0024] In this embodiment, due to the combined use of water reducing agent, antifreeze agent, reinforcing agent, and slump loss inhibitor, the water reducing rate of concrete is higher, and the effect of antifreeze and early strength is better. This amount is mainly used for C35 in winter construction. The pumping of the following concrete.

Embodiment 2

[0026] The invention includes: polycarboxylate water reducer, triterpene saponin air-entraining agent, tributyl fat fluidizing agent, sodium thiosulfate enhancer, ethylene glycol antifreeze, sugar sodium slump loss inhibitor, citric acid buffer coagulant.

[0027] The proportioning of various materials by weight percentage is:

[0028]

[0029] The pumping antifreeze obtained in this example is blended into concrete in an amount of 2% of the cementitious material, and its properties are shown in Table 1. In this embodiment, due to the optimal compound use of high-performance water-reducing agent, high-performance antifreeze agent, reinforcing agent, and slump loss inhibitor, the water-reducing rate of concrete is the highest, and the anti-freezing and early-strength enhancement functions are better. Winter construction is mainly used for pumping construction with C40-C60 high-strength concrete, and the cost of raw materials is relatively low at this time.

[0030] Table 1...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/22C04B24/38
Inventor 杭美艳李斌赵根田李梅张永强李林风
Owner BAOTOU ANSHUN NEW BUILDING MATERIALS
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