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Repairing material for weathering ganged brick

A technology of repairing materials and clear water bricks, which is applied in the field of weathered clear water brick repair materials, can solve problems such as threats to the service life of buildings and affecting the overall appearance quality of buildings, and achieve the effects of superior anti-seepage, inhibiting the growth of bacteria, and high strength

Inactive Publication Date: 2015-11-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the huge number of ancient building systems in our country, the clear water brick wall is the main load-bearing wall material. The weathering effect not only affects the overall appearance quality of the building, but also directly threatens the service life of the building.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The invention relates to a repairing material with good compatibility with weathered clear water bricks. The weight percentage of raw materials is composed of: 15% quicklime, 70% sintered shale powder, 4% glutinous rice starch, 4% gypsum, 7% calcium hydroxide ; Among them, the ratio of water to material is 0.5 respectively. First, mix glutinous rice starch with a certain amount of water and cook at 75°C for 2 hours to obtain modified glutinous rice starch slurry, then mix the sintered shale powder, quicklime, gypsum and calcium hydroxide with a fixed ratio, and add the prepared modified glutinous rice starch slurry. The glutinous rice starch slurry and the remaining water were stirred for 2 minutes to obtain the repair material, and measured according to the "Basic Performance Test Method of Building Mortar" and the use method of the quick repair material.

[0041] The properties of the repair material are: the initial setting and final setting time are 38min and 72min;...

Embodiment 2

[0043] The invention relates to a repairing material with good compatibility with weathered clear water bricks. The weight percentage of raw materials is composed of: 30% quicklime, 55% sintered shale powder, 4% glutinous rice starch, 5% gypsum, 6% calcium hydroxide ; Among them, the ratio of water to material is 0.5 respectively. First, mix the glutinous rice starch with a certain amount of water and cook at 80°C for 2 hours to obtain a modified glutinous rice starch slurry, then mix the sintered shale powder, quicklime, gypsum and calcium hydroxide with a predetermined ratio, and add the prepared modified glutinous rice starch slurry. The glutinous rice starch slurry and the remaining water were stirred for 2 minutes to obtain the repair material, and measured according to the "Basic Performance Test Method of Building Mortar" and the use method of the quick repair material.

[0044] The properties of the repair material are: the initial setting and final setting time are 32...

Embodiment 3

[0046] The invention relates to a repairing material with good compatibility with weathered clear water bricks. The weight percentage of raw materials is composed of: 48% quicklime, 40% sintered shale powder, 4% glutinous rice starch, 4% gypsum, 4% calcium hydroxide ; Among them, the ratio of water to material is 0.5 respectively. First, mix the glutinous rice starch with a certain amount of water and cook at 80°C for 2 hours to obtain a modified glutinous rice starch slurry, then mix the sintered shale powder, quicklime, gypsum and calcium hydroxide with a predetermined ratio, and add the prepared modified glutinous rice starch slurry. The glutinous rice starch slurry and the remaining water were stirred for 1.5 minutes to obtain the repair material, and measured according to the "Basic Performance Test Method of Building Mortar" and the use method of the quick repair material.

[0047] The performance of the repair material is: the initial setting and final setting time are ...

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Abstract

A repairing material for a weathering ganged brick comprises, by mass, 10%-40% of quick lime, 50%-80% of sintering shale powder, 4%-8% of glutinous rice starch, 4%-6% of gypsum and 2%-8% of calcium hydroxide. A preparation method comprises the following steps that a certain amount of water is added in the glutinous rice starch, digesting is conducted for 2h to 2.5 h at the temperature ranging from 75 DEG C to 85 DEG C, and modified glutinous rice starch paste is obtained; the sintering shale powder, the quick lime, the gypsum and the calcium hydroxide are evenly mixed; the prepared modified glutinous rice starch paste and the rest of water are added, stirring is conducted for 1 min to 2 min, and the repairing material is obtained, wherein the ratio of water to material is 0.45 to 0.56. The sintering shale powder is selected to serve as one component of the repairing material for the weathering ganged brick, obtained sintering shale powder is closest to the color of an original brick body, fast cooling is conducted on the sintered shale powder, partial SiO2 can be made to be in a high-energy activated state, and therefore conducting of a reaction in the later period is facilitated.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a repair material for weathered clear water bricks. Background technique [0002] my country is a country with a long history and strong cultural heritage, so it has achieved a large number of ancient architectural groups with a wide variety and a large number. After hundreds or even thousands of years of baptism, the treasures left by these ancestors have been continuously affected by natural weathering (climate change, sunlight, wind and rain erosion, etc.), and at the same time, the rapid development of the industrial revolution and urbanization The rapid expansion and the rise of tourism have caused great damage to the existing ancient buildings, and various minor damages gradually accumulate and eventually cause the overall damage of the building. For example, the Great Wall, the greatest project in the world, has been severely eroded by natural weathering and ...

Claims

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Application Information

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IPC IPC(8): C04B28/12C04B14/04C04B24/38C04B22/14C04B22/06
Inventor 蹇守卫何桂海莫志胜马保国孙孟琪郅真真
Owner WUHAN UNIV OF TECH
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