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A liquid polymer shrinkage reducing and compacting agent for concrete

A polymer and concrete technology, applied in the field of liquid polymer shrinkage reducing and compacting agent for concrete, can solve the problems of difficult promotion and high price, achieve good social and economic benefits, low cost, and improve the effect of compressive strength

Active Publication Date: 2021-06-04
迈嘉尔(武汉)高新技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the deficiencies of the above technologies, the present invention aims to overcome the deficiencies of the existing technologies and the problems of high price and difficulty in popularization, and provides a liquid polymer shrinkage reducing and compacting agent for concrete, which can improve early strength, late strength, reduce drying shrinkage cracks and Temperature shrinkage cracks, improve concrete's impermeability and salt erosion resistance and other functional characteristics

Method used

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  • A liquid polymer shrinkage reducing and compacting agent for concrete

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Effect test

Embodiment 1

[0038] The liquid macromolecule shrinkage reducing and compacting agent for concrete of the present embodiment is composed of the following raw materials in terms of mass percentage: a concentration of 99% triethanolamine 1.2%, a concentration of 85% triisopropanolamine 1.5%, anhydrous sodium sulfate 3%, sodium tripolyphosphate 2%, polysiloxane 0.2%, polyether 0.3%, tert-butanol 0.1%, and the rest is water. The preparation method is firstly dissolving the solid components in water, then adding other components and stirring evenly to obtain a clear liquid polymer shrinkage reducing and compacting agent.

Embodiment 2

[0040] The liquid macromolecule shrinkage-reducing compacting agent of the present embodiment, by mass percent, is made up of following raw material: 85% triethanolamine 1.5, 85% triisopropanolamine 1.2, anhydrous sodium sulfate 4.5, sodium tripolyphosphate 4.0, Polysiloxane 0.4, polyether 0.2, tert-butanol 0.3, and the rest is water. The preparation method is firstly dissolving the solid components in water, then adding other components and stirring evenly to obtain a clear liquid polymer shrinkage reducing and compacting agent.

Embodiment 3

[0042] The liquid macromolecule shrinkage reducing and compacting agent for concrete of the present embodiment is composed of the following raw materials in terms of mass percentage: a concentration of 85% triethanolamine 1.5%, a concentration of 85% triisopropanolamine 1.2%, anhydrous sodium sulfate 3%, sodium tripolyphosphate 2%, polysiloxane 0.2%, polyether 0.2%, tert-butanol 0.2%, and the rest is water. The preparation method is firstly dissolving the solid components in water, then adding other components and stirring evenly to obtain a clear liquid polymer shrinkage reducing and compacting agent.

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Abstract

The invention discloses a liquid polymer shrinkage reducing and compacting agent for concrete, which uses water as a solvent and contains the following raw materials in mass percentage: 0.5%-2% of triethanolamine, 0.5%-2% of triisopropanolamine, anhydrous sulfuric acid Sodium 1%‑5%, sodium tripolyphosphate 1%‑6%, polysiloxane 0%‑0.5%, polyether 0‑0.5%, tert-butanol 0‑0.2%. The preparation method of the liquid polymer shrinkage reducing and compacting agent for concrete of the present invention is simple and low in cost. After being applied to concrete, it can reduce air bubbles inside the freshly mixed concrete and improve its mechanical properties, including 7-day and 28-day compressive strength and compressive strength. It can also effectively enhance the volume stability of concrete, reduce the shrinkage of concrete, and improve the crack resistance and water resistance of concrete.

Description

technical field [0001] The invention relates to the field of admixtures for concrete, in particular, the invention provides a liquid polymer shrinkage reducing and compacting agent for concrete. Background technique [0002] At present, in concrete engineering, the method of solving the problem of concrete cracking and water seepage generally adopts the method of rigid structure self-cracking and waterproofing and the combination of outer coating. Among them, structural self-cracking and waterproofing generally use expansion agents, which can reduce the problem of cracking and water seepage by means of expansion compensation and shrinkage. In actual use, too high or too low expansion rate is harmful, and the optimal dosage needs to be determined, and Because the powder is not easy to disperse, the risk of use is increased. Silane waterproof and anti-corrosion coating is mainly used for external waterproofing, the construction process is cumbersome, and the service life is g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42
CPCC04B40/0039C04B24/122C04B22/147C04B22/16C04B24/42C04B24/32C04B24/026C04B14/46C04B14/104
Inventor 凌鼎山杨亚运方周
Owner 迈嘉尔(武汉)高新技术发展有限公司
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