Water-resistant gypsum base wall repair material

A technology of gypsum-based and repairing materials, applied in the field of water-resistant gypsum-based wall repairing materials, which can solve the problems of short setting time, large strength loss of gypsum hardened body, poor water resistance of gypsum products, etc., and achieve reasonable setting time and volume stability Excellent, the effect of reducing the landfill occupation of solid waste and the impact on the ecological environment

Active Publication Date: 2014-09-24
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of short setting time of gypsum-based materials, large loss of strength of gypsum hardened body by commonly used retarders, and poor water resistance of gypsum products, the invention provides a method using desulfurized gypsum, waste penicillin slag, manganese slag and functional additives. Water-resistant wall repair compound made of primary material

Method used

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  • Water-resistant gypsum base wall repair material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Add 5 parts of waste penicillin residue powder to 100 parts of NaOH aqueous solution with a pH of 13.0, soak and modify at 60°C for 60 minutes, after modification is completed, perform solid-liquid separation to obtain modified penicillin waste residue filtrate Add 250 parts of hydroxylated polyphenylene microsphere emulsions with a solid content of 20% to a certain batch of modified penicillin waste slag filtrate with a solid content of 1 part, mix well and obtain composite auxiliary agent A through spray drying.

[0021] Mix 5.1 parts of composite additive A, 100 parts of desulfurized building gypsum, and 10 parts of manganese slag powder (with a specific surface area of ​​476m 2 / kg), 5 parts of 42.5 strength grade ordinary Portland cement, 0.2 parts of hydroxypropyl methylcellulose, 0.3 parts of naphthalene-based sulfonate water reducer, etc. are mixed evenly in proportion by weight, and the water-solid ratio 0.6, the test block was cured for 28 days unde...

Embodiment 2

[0022] Example 2: Add 10 parts of waste penicillin residue powder to 100 parts of NaOH aqueous solution with a pH of 13.6, soak and modify at 70°C for 110 minutes, after the modification is completed, perform solid-liquid separation to obtain the modified penicillin waste residue filtrate Add 133.3 parts of hydroxylated polyphenylene microsphere emulsions with a solid content of 20% to a certain batch of modified penicillin waste slag filtrate with a solid content of 1 part, mix well and obtain composite auxiliary agent A through spray drying.

[0023] Mix 8.3 parts of composite additive A, 100 parts of desulfurized building gypsum, and 15 parts of manganese slag powder (the specific surface area is 453m 2 / kg), 7 parts of 42.5 strength grade composite Portland cement, 0.4 parts of hydroxypropyl methylcellulose, 0.5 parts of naphthalene sulfonate water reducer, etc., mixed evenly in proportion by weight, the water-solid ratio 0.6, the test block was cured for 28 days under sta...

Embodiment 3

[0024] Example 3 Add 15 parts of waste penicillin residue powder to 100 parts of NaOH aqueous solution with a pH of 14.0, soak and modify at 80°C for 150 minutes, after the modification is completed, perform solid-liquid separation to obtain the modified penicillin waste residue filtrate Add 100 parts of hydroxylated polyphenylene microsphere emulsion with a solid content of 20% to a certain batch of modified penicillin waste slag filtrate with a solid content of 1 part, mix well and obtain composite auxiliary agent A through spray drying.

[0025] Mix 10.5 parts of composite additive A, 100 parts of desulfurized building gypsum, and 20 parts of manganese slag powder (with a specific surface area of ​​433m 2 / kg), 10 parts of 32.5 strength grade slag portland cement, 0.6 parts of hydroxypropyl methylcellulose, 0.7 parts of naphthalene sulfonate water reducer, etc., mixed evenly in proportion by weight, the water-solid ratio 0.6, the test block was cured for 28 days under stand...

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Abstract

The invention relates to a water-resistant gypsum base wall repair material. The water-resistant gypsum base wall repair material comprises, by weight, 100 parts of desulfurated building gypsum, 5.1-10.5 parts of compound additive A, 10-20 parts of manganese slag powder, 5-10 parts of cement, 0.1-0.6 part of water-retaining agents and 0.3-0.7 part of water reducing agents. The compound additive A has delayed coagulation, water resistance and adhesion enhancement effects, and the acquired gypsum base wall repair material is reasonable in operation time and good in water resistance, adhesion performance, mechanical property and construction performance. Due to the fact that a lot of industrial by-products and waste are used, the water-resistant gypsum base wall repair material has the advantages that environment friendliness is achieved and the ecological environment is protected.

Description

technical field [0001] The invention relates to a water-resistant gypsum-based wall repair material, specifically a water-resistant gypsum prepared by using industrial by-products or wastes such as penicillin waste slag, polyhydroxyethyl methacrylate emulsion, desulfurized gypsum, manganese slag, etc. Base wall repair compound. Background technique [0002] In the past, building repair materials were mostly cement-based products, which had the disadvantages of dry shrinkage and cracks. In recent years, gypsum-based building repair products have gradually been favored by people because of their good gas and stability. Compared with traditional building materials, gypsum building materials are cheap and environmentally friendly, and are highly recommended "green building materials" at home and abroad. However, due to the common problem of short setting and hardening time of gypsum, it generally loses its fluidity in ten minutes or even a few minutes, which cannot meet the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
Inventor 赵风清任晓琼胡倩倩张志国褚晓萌武亚南林默涵李配欣
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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