Additive for maintaining construction performance of wet mixing mortar and preparation method thereof

A technology of construction performance and wet-mixed mortar, which is applied in the field of building materials, can solve the problems of unfavorable wet-mixed mortar production and construction quality control, inconsistency between construction performance and construction operable time, and short construction operable time. To achieve the effect of being conducive to production quality control, good water retention performance, and improving construction performance

Inactive Publication Date: 2017-01-25
中建西部建设西南有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although there are many types of wet-mixed mortar admixtures on the market, the quality is uneven. The prepared wet-mixed mortar generally has poor water retention, short construction operation time, inconsistency between construct

Method used

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  • Additive for maintaining construction performance of wet mixing mortar and preparation method thereof
  • Additive for maintaining construction performance of wet mixing mortar and preparation method thereof
  • Additive for maintaining construction performance of wet mixing mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0023] The raw material formula of the admixture described in Examples 1 to 5 to maintain the construction performance of wet-mixed mortar is shown in Table 1 (parts by mass)

[0024] The formula of each component of the admixture described in Examples 1 to 5 to maintain the construction performance of wet-mixed mortar

[0025]

[0026] The etherified polycarboxylate water reducer has a molecular weight of 50,000 Da, a water reducing rate of 30%, and a solid content of not less than 50 wt%.

[0027] The guar gum-xanthan gum polymer is formed by polymerizing guar gum powder and xanthan gum powder at a mass ratio of 3:2, with a molecular weight of 200,000 Da.

[0028] The tea saponin is a yellow-brown powder with a chemical purity of 90% and an ignition residue of 10%.

[0029] The hydroxypropyl methylcellulose ether is a white powder, easily soluble in water, with a viscosity of 100,000 MPa·S and an ignition residue of 1%.

[0030] The hydroxyethylidene diphosphonic acid i...

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Abstract

The invention belongs to the field of building materials, and particularly relates to an additive for maintaining the construction performance of wet mixing mortar and a preparation method thereof. The additive comprises a material A and a material B, wherein the material A is prepared from the following ingredients in percentage by mass: 1.0 to 2.0 percent of etherified polycarboxylic acid water reducing agents, 0 to 0.3 percent of hydroxypropyl methyl cellulose ether, 5.0 to 7.5 percent of guar gum and xanthan gum polymers, 0.4 to 0.5 percent of tea saponin and the balance of water; the material B is prepared from the following ingredients in percentage by mass: 0.15 to 0.3 percent of hydroxyethylidene diphosphonic acid, 3.0 to 4.0 percent of gluconic acid sodium salt, 0 to 1.0 percent of white sugar and the balance of water. The material A and the material B are used in a mixed way. When the additive provided by the invention is used, the construction performance of the web mixing mortar can be obviously improved; the construction operable time of the web mixing mortar can be freely regulated within 6 to 30h; in addition, the performance stability of the wet mixing mortar in the construction operable time can be maintained.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an admixture for maintaining the construction performance of wet-mixed mortar and a preparation method thereof. Background technique [0002] In engineering construction, construction mortar is a building material with a large amount and a wide range of uses. However, the traditional ready-mixed mortar not only has poor quality stability, high construction labor intensity and low construction efficiency, but also has serious noise and environmental pollution, which has brought great harm to people's lives. In order to overcome the disadvantages of traditional mortar, it is necessary to speed up the process of commercialization of mortar. As a kind of ready-mixed commercial mortar, wet-mixed mortar plays a significant role in saving resources, protecting the environment, and improving project quality. A large number of promotional applications. [0003] According t...

Claims

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Application Information

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IPC IPC(8): C04B24/38
CPCC04B40/0039C04B24/383C04B24/38C04B24/003C04B24/10C04B2103/302
Inventor 陈景刘永道李东来夏远英王晶晶
Owner 中建西部建设西南有限公司
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