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A water-resistant gypsum-based thermal insulation mortar

A technology based on thermal insulation mortar and gypsum, which is applied in the field of comprehensive utilization of industrial waste resources and building wall enclosure structure materials, which can solve the problems of ineffective utilization, non-water resistance and poor durability of thermal insulation mortar, and achieve gypsum replacement Increased cement rate, good durability, and expanded application range

Active Publication Date: 2019-03-08
马振义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the gypsum-based thermal insulation mortar is not water-resistant, which will greatly affect its promotion and application, and also bring a large accumulation of industrial by-product gypsum, which cannot be effectively used. Occasionally, water-resistant thermal insulation mortar is also seen. The most important thing is to add organic waterproof materials such as silicone. This type of material can only form a thin film on the surface of the material to block pores and cracks. It is a physical method, but it will still decay over time, with poor durability and poor water resistance.

Method used

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  • A water-resistant gypsum-based thermal insulation mortar
  • A water-resistant gypsum-based thermal insulation mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] By weight, weigh 60 parts of desulfurized gypsum, 30 parts of mineral powder, 9 parts of cement, 1 part of alkaline material, 0.15 part of cellulose ether, 0.05 part of retarder, 0.3 part of water reducing agent, and 0.05 part of thixotropic agent. Put it into a dry powder mixer, mix and stir for 3 minutes to get a well-mixed mixture, then put the stirred mixture into the mixer, add 75 parts of water, mix and stir for 3 minutes, then add 1.8 parts of polystyrene particles, and stir for 3 minutes , to obtain water-resistant gypsum-based thermal insulation mortar.

[0025] The dry density of the obtained water-resistant gypsum-based thermal insulation mortar is 432kg / m 3 , the flexural strength is 0.55MPa, the compressive strength is 1.2MPa, and the softening coefficient is 0.75.

Embodiment 2

[0027] By weight, weigh 58 parts of desulfurized gypsum, 25 parts of mineral powder, 13 parts of cement, 4 parts of alkaline material, 0.2 part of cellulose ether, 0.03 part of retarder, 0.2 part of water reducing agent, and 0.06 part of thixotropic agent. Put it into a dry powder mixer, mix and stir for 3 minutes to get a well-mixed mixture, then put the stirred mixture into the mixer, add 68 parts of water, mix and stir for 3 minutes, then add 1.4 parts of polystyrene particles, and stir for 3 minutes , to obtain water-resistant gypsum-based thermal insulation mortar.

[0028] The dry density of the resulting water-resistant gypsum-based thermal insulation mortar is 523kg / m 3 , the flexural strength is 0.68MPa, the compressive strength is 1.5MPa, and the softening coefficient is 0.84.

Embodiment 3

[0030] By weight, weigh 58 parts of desulfurized gypsum, 28 parts of mineral powder, 12 parts of cement, 2 parts of alkaline materials, 0.18 parts of cellulose ether, 0.04 parts of retarder, 0.2 parts of water reducing agent, and 0.05 parts of thixotropic agent. Put it into a dry powder mixer, mix and stir for 3 minutes to get a well-mixed mixture, then put the stirred mixture into the mixer, add 75 parts of water, mix and stir for 3 minutes, then add 2 parts of polystyrene particles, and stir for 3 minutes , to obtain water-resistant gypsum-based thermal insulation mortar.

[0031] The dry density of the obtained water-resistant gypsum-based thermal insulation mortar is 323kg / m 3 , the flexural strength is 0.32MPa, the compressive strength is 0.65MPa, and the softening coefficient is 0.71.

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Abstract

The invention discloses waterproof gypsum-based thermal insulation mortar, and relates to the fields of industrial waste resource recovery and comprehensive utilization and building wall envelope structure materials. The waterproof gypsum-based thermal insulation mortar is prepared from, by weight, 55-75 parts of desulphurized gypsum, 15-35 parts of mineral powder, 5-15 parts of cement, 1-6 parts of a basic material, 0.1-0.5 part of cellulose ether, 0.01-0.08 part of a retarder, 0.2-0.6 part of a water reducing agent, 0.01-0.08 part of a thixotropic agent, 1-2.5 parts of polyphenyl granules and 65-80 parts of water. According to the waterproof gypsum-based thermal insulation mortar, semi-hydrated gypsum modification technique is adopted, the pozzolanic active material mineral powder and the basic excitation material are used for excitation to enable an air-hardening material to generate a water-hardening material, the strength is high, and the water resistance and the durability are good.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of industrial waste resources and building wall enclosure structure materials, in particular to a water-resistant gypsum-based thermal insulation mortar. Background technique [0002] At present, the gypsum-based thermal insulation mortar is not water-resistant, which will greatly affect its promotion and application, and also bring a large accumulation of industrial by-product gypsum, which cannot be effectively used. Occasionally, water-resistant thermal insulation mortar is also seen. The most important thing is to add organic waterproof materials such as silicone. This type of material can only form a thin film on the surface of the material to block pores and cracks. It is a physical method, but it will still decay over time, with poor durability and poor water resistance. . Contents of the invention [0003] The object of the present invention is to solve the above-mentioned defic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B18/14C04B22/06
CPCC04B28/144C04B2201/20C04B2201/50C04B18/141C04B7/02C04B22/064C04B24/383C04B2103/22C04B24/121C04B16/08C04B22/002Y02W30/91
Inventor 马振义马振家
Owner 马振义