Viscosity regulator for pre-mixed high-strength concrete

A high-strength concrete and viscosity modifier technology, applied in the field of viscosity modifiers and concrete admixtures, can solve the problems of uneven quality of raw materials, inability to reduce concrete viscosity, and large differences, so as to increase fluidity and avoid coarse aggregate sedimentation. Bottom, the effect of reducing viscosity

Pending Publication Date: 2017-12-01
北京中砼冠疆新航建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention has high requirements on the raw materials used, and the quality of raw materials in actual production is uneven and varies greatly, which may lead to the inability to reduce the viscosity of concrete in actual construction

Method used

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  • Viscosity regulator for pre-mixed high-strength concrete
  • Viscosity regulator for pre-mixed high-strength concrete
  • Viscosity regulator for pre-mixed high-strength concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] A viscosity regulator for high-strength concrete, mixed and stirred evenly according to the mass fraction in the following table, and formulated into a viscosity regulator:

[0024]

[0025]

[0026] The viscosity modifier prepared according to the above table is mixed with concrete respectively, and the concrete viscosity is judged by measuring the time for the concrete to pass through the V-shaped funnel with reference to CECS203-2006 "Technical Regulations for the Application of Self-Compacting Concrete".

[0027] The mix ratio of the concrete used is shown in the table below:

[0028]

[0029] The measured concrete properties are shown in the table below:

[0030]

[0031] It can be seen from the above table that the viscosity modifier of the present invention can effectively reduce the viscosity of concrete by as much as 33.3% to 39.1%, and at the same time, it does not have much influence on the strength of concrete at 3d, 7d, and 28d.

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Abstract

The invention belongs to the technical field of building material production and processing, and relates to a concrete additive, in particular to a viscosity regulator which is used for high-strength concrete and can reduce the viscosity of the concrete. The viscosity regulator is prepared from the following raw materials by mass percent: 0.1-2.0% of sodium alginate, 0.2-3.0% of welan gum, 0.1-3.0% of xanthan gum, 0.1-1.0% of a neutralizing agent and 91.0-99.5% of water. The viscosity regulator can be used for effectively reducing the viscosity of a high-strength concrete mixture, has a certain hydrophilia, reduces the friction between particles, improves the flow property of slurry, has certain thickening property and suspension stability, and improves the stability of the high-strength concrete.

Description

technical field [0001] The invention belongs to the technical field of production and processing of building materials, and relates to a concrete admixture, in particular to a viscosity regulator used for high-strength concrete and capable of reducing the viscosity of the concrete. Background technique [0002] In my country, concrete with a strength grade of C60-C100 is generally called high-strength concrete. As a new building material, high-strength concrete has been widely used in high-rise building structures, long-span bridge structures and some special structures due to its high compressive strength, strong deformation resistance, high density, and low porosity. Application, especially the compressive strength, is generally 4 to 6 times that of ordinary strength concrete, which can effectively reduce the cross section of components, and is especially suitable for high-rise buildings. However, due to the large amount of high-strength concrete gel materials and relativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38
CPCC04B40/0039C04B24/38C04B22/062
Inventor 张召伟马雪英齐宾唐辉
Owner 北京中砼冠疆新航建材有限公司
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