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High-strength self-leveled material for surface layer and preparation method of high-strength self-leveled material

A high-strength, self-leveling technology, applied in the field of building materials, can solve the problems of high price of self-leveling materials, difficulty in using phosphogypsum, and low strength, so as to reduce the pressure of enterprise development, expand development, and improve utilization.

Inactive Publication Date: 2018-05-29
诺弗斯绝热材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a high-strength self-leveling material for the surface layer and its preparation method to solve the problems of high price and low strength of the self-leveling material and the problem that phosphogypsum is difficult to use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-strength self-leveling material for the surface layer, which is prepared from the following raw materials in parts by weight: Portland cement 45-55 parts, high-alumina cement 70-100 parts, fly ash 45-55 parts, heavy calcium Powder 100-130 parts, α-phosphogypsum hemihydrate 200-250 parts, defoamer 0.9-1.1 parts, superplasticizer 4-6 parts, redispersible rubber powder 65-75 parts, tartaric acid 1.5-1.9 parts 1.2-1.6 parts of lithium carbonate powder, 0.3-0.4 parts of retarder, and 0.7-0.9 parts of cellulose ether.

[0022] The preparation method of the above-mentioned high-strength self-leveling material for the surface layer comprises the following steps:

[0023] (1) Weighing: Weigh each raw material according to the above weight ratio, and set aside;

[0024] (2) Primary mixing: fly ash, heavy calcium powder, α-phosphogypsum hemihydrate, defoamer, superplasticizer, redispersible rubber powder, tartaric acid, lithium carbonate powder, retarder and cellulose Put...

Embodiment 2

[0027] A high-strength self-leveling material for the surface layer, which is prepared from the following raw materials in parts by weight: 50 parts of Portland cement, 85 parts of high-alumina cement, 50 parts of fly ash, 115 parts of heavy calcium powder, α- 225 parts of phosphogypsum hemihydrate, 1 part of defoamer, 5 parts of superplasticizer, 70 parts of redispersible rubber powder, 1.7 parts of tartaric acid, 1.4 parts of lithium carbonate powder, 0.35 parts of retarder, 0.8 parts of cellulose ether share.

[0028] α-Phosphogypsum hemihydrate is prepared by adding 0.015% sodium citrate and 0.015% sodium lignosulfonate by weight into phosphogypsum and then neutralizing and autoclaving the phosphogypsum. The heavy calcium powder is passed through a 325 mesh sieve. Lithium carbonate powder is passed through a 300-mesh sieve.

[0029] The preparation method of the above-mentioned high-strength self-leveling material for the surface layer comprises the following steps:

[...

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Abstract

The invention discloses a high-strength self-leveled material for a surface layer. The high-strength self-leveled material is prepared from the following raw materials in parts by weight: 45-55 partsof Portland cement, 70-100 parts of high-aluminum cement, 45-55 parts of coal ash, 100-130 parts of coarse whiting powder, 200-250 parts of alpha-semihydrate ardealite, 0.9-1.1 parts of a defoaming agent, 4-6 parts of an efficient water reduction agent, 65-75 parts of dispersible gelatine powder, 1.5-1.9 parts of tartaric acid, 1.2-1.6 parts of lithium carbonate powder, 0.3-0.4 part of a retarderand 0.7-0.9 part of cellulose ether. By adopting the high-strength self-leveled material, the problem that ardealite is hard to utilize is solved, the utilization rate of the ardealite is increased, ecological environment burden and company development pressure caused by the ardealite are alleviated, self-leveled materials of which the price is lower than those of self-leveled materials of a natural gypsum base, a cement base and an epoxy base can be prepared, and development of self-leveled materials is promoted.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-strength self-leveling material for a surface layer and a preparation method thereof. Background technique [0002] Self-leveling is a ground construction technology. It is a liquid substance mixed with multiple materials and water. After being poured into the ground, this substance can flow along the ground according to the unevenness of the ground, automatically level the ground, and dry quickly. The cured ground will form a smooth, flat and seamless new base. Ground self-leveling mortar was developed in the 1970s. It is composed of cementitious materials, fine aggregates and additives. It is a single-component, high-strength, quick-setting material that can be used after adding water and stirring on site. . The ground self-leveling mortar can provide a suitable, flat, smooth and firm bedding base for uneven bases to lay various floor materials, such as carp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/146C04B2201/50C04B7/02C04B7/32C04B18/08C04B14/28C04B24/06C04B24/18C04B22/064C04B2103/50C04B2103/302C04B2103/0057C04B22/10C04B24/383C04B2103/22
Inventor 胡利生
Owner 诺弗斯绝热材料有限公司