Autoclaved aerated concrete plate repairing agent

A concrete slab, autoclaved aerated concrete technology, applied in climate sustainability, sustainable waste treatment, solid waste management, etc. Low problems, to achieve the effect of extending the construction time, improving the aesthetics, and being easy to polish

Inactive Publication Date: 2015-09-23
SHANDONG TIANYU WALL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects in the prior art, the present invention provides an autoclaved aerated concrete slab repair agent to solve the problems of color difference between the repair agent and the autoclaved aerated concrete slab, low bonding strength and long setting time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Raw materials are proportioned according to the following mass percentages for each component: 50% fly ash, 20% gypsum, 10% cement, 19% sand, 0.3% fiber, 0.3% water retaining agent, and 0.4% retarder. According to JGJ / T70-2009 "Standards for Test Methods of Basic Properties of Building Mortar", the test results are as follows:

[0021] Test items

[0022] Water retention rate (%)

[0023] Beneficial effects: the repairing agent in this embodiment uses a large amount of fly ash, which not only realizes the comprehensive utilization of industrial solid waste fly ash, effectively saves costs, but also makes the repairing agent hydrated and has the same effect as autoclaved heating. The color of the air concrete slab is consistent, and the performance is relatively matched. The potential chemical reactivity of the fly ash also improves the later strength of the repair agent.

Embodiment 2

[0025] Raw materials are proportioned according to the following mass percentages for each component: fly ash 60%, gypsum 10%, cement 15%, sand 14%, fiber 0.3%, water retaining agent 0.3%, retarder 0.4%. According to JGJ / T70-2009 "Standards for Test Methods of Basic Properties of Building Mortar", the test results are as follows:

[0026] Test items

[0027] Beneficial effects: the repairing agent described in this embodiment has a longer setting time, which effectively prolongs the working time of the repairing agent, has better water retention, and smaller drying shrinkage. Moreover, the amount of fly ash used is large, and its The color after hydration is more consistent with the autoclaved aerated concrete slab, and the color difference is smaller.

Embodiment 3

[0029] Raw materials are proportioned according to the following mass percentages for each component: fly ash 40%, gypsum 30%, cement 5%, sand 24%, fiber 0.3%, water retaining agent 0.3%, retarder 0.4%. According to JGJ / T70-2009 "Standards for Test Methods of Basic Properties of Building Mortar", the test results are as follows:

[0030] Test items

[0031] Beneficial effects: the repairing agent described in this embodiment has a shorter setting time, which effectively shortens the setting time of the repairing agent, shortens the grinding time, and improves work efficiency; due to the higher sand content in the repairing agent, its compression resistance Higher strength.

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PUM

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Abstract

The invention discloses an autoclaved aerated concrete plate repairing agent and belongs to the technical field of building materials. The autoclaved aerated concrete plate repairing agent is composed of, by mass, 40-60% of coal ash, 10-30% of gypsum, 5-15% of cement, 10-30% of sand, 0.01-2.0% of fiber, 0.01-1.05 of water retaining agent and 0.01-1.5% of setting retarder. The coal ash is coal ash for silicate building products meeting JC/T, the gypsum is semi-hydrated gypsum, and the cement is universal silicate cement meeting GB. By the autoclaved aerated concrete plate repairing agent, the problem that an existing repairing agent and an autoclaved aerated concrete plate have chromatic aberration and are low in binding strength and long in setting time.

Description

technical field [0001] The invention relates to a repairing agent, in particular to an autoclaved aerated concrete slab repairing agent, which belongs to the technical field of building materials. Background technique [0002] Autoclaved aerated concrete slab is a kind of light weight, heat preservation, sound insulation and fire prevention, which is made of cement, lime, fly ash, aluminum powder, etc. Green environmental protection building materials. With the improvement of building energy-saving requirements at home and abroad, autoclaved aerated concrete panels have been widely used in building exterior walls, interior partition walls and roofs. [0003] During the production process of autoclaved aerated concrete slabs, due to the low strength of autoclaved aerated concrete slabs, it is easy to have missing edges, scratches, surface defects, etc. during transportation and construction, which affects the qualification rate and utilization rate of the product. In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/08C04B24/06C04B24/18C04B22/16C04B103/22C04B111/72
CPCY02W30/91
Inventor 许博张雷
Owner SHANDONG TIANYU WALL MATERIAL
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