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Wall space repairing material and preparation method thereof

A repairing material and technology to be repaired, applied in the field of building materials, can solve the problems of lack of repairing materials to protect loess cave dwelling sites, and achieve the effects of improving void structure and easy erosion, improving freeze-thaw resistance, and strengthening cementation

Active Publication Date: 2019-03-01
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few studies on the restoration of the walls of loess cave dwellings, and there is a lack of feasible restoration materials to protect the remains of loess cave dwellings

Method used

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  • Wall space repairing material and preparation method thereof
  • Wall space repairing material and preparation method thereof
  • Wall space repairing material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0032] The present invention also provides a kind of preparation method of wall repair material, comprises the following steps:

[0033] Mix glutinous rice pulp, silica fume, quicklime, hemihydrate gypsum, fiber material, the original soil of the cave dwelling to be repaired, and a water reducer to form a wall repair material.

[0034] Specifically: first, prepare glutinous rice slurry: pregelatinize glutinous rice flour and water, the time of pregelatinization is 60-90 minutes, and the temperature of pregelatinization is 80-90°C. Using the temperature and time of the above pregelatinization can ensure that the glutinous rice and water are fully gelatinized to obtain glutinous rice pulp, and avoid the structure of the glutinous rice pulp being damaged due to insufficient gelatinization or excessive gelatinization of the glutinous rice. And in the process of pregelatinization, it is necessary to keep stirring and keep the water level constant, so as to avoid the agglomeration of ...

Embodiment 1

[0042] This embodiment provides a wall repair material, which includes 360 parts of glutinous rice pulp, 205 parts of hemihydrate gypsum, 133 parts of quicklime, 150 parts of wollastonite powder, 13 parts of water reducing agent, and the original soil of the cave dwelling to be repaired. 555 parts and 4 parts of fiber material. Among them, the original soil of the cave to be repaired is loess with a moisture content of 10%, the fiber material is hemp knife fiber, the length is 2 cm, and the mass percentage concentration of glutinous rice pulp is 2.5%.

[0043] The present embodiment provides a kind of preparation method of wall repair material:

[0044] First, glutinous rice flour and water are mixed according to the mass ratio of 39:1 for pre-gelatinization, the pre-gelatinization time is 20 minutes, and the pre-gelatinization temperature is 90°C. Then the obtained slurry is cooled so that the temperature of the glutinous rice slurry is 20°C.

[0045] Then the first mixture...

Embodiment 2-6

[0048] The composition of the wall repairing material provided in Example 2-6 is basically the same as that of the wall repairing material provided in Example 1, the difference being that the ratio of each raw material is different, the preparation method and implementation of the wall repairing material provided in Example 2-6 The preparation methods of the wall repair materials provided in Example 1 are basically the same, the difference lies in the change of specific operating conditions.

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Abstract

The invention relates to the field of building materials, in particular to a wall space repairing material and a preparation method thereof. The wall space repairing material can be used for repairingloess cave dwellings and is prepared from, by weight, 360-540 parts of sticky rice pulp, 100-150 parts of silica fume, 100-200 parts of quick lime, 200-300 parts of semi-hydrated gypsum, 500-600 parts of cave dwelling raw sample loess for repairing, 1-4 parts of a fiber material and 10-18 parts of a water reducing agent. A bridging structure formed by filling gaps among loess granules enables theloess granules to be connected, the internal gluing is enhanced, the problems of internal gap structure and possible erosion of natural loess are solved, thus the characteristics of strong water absorption of the loess and loess collapse with water are improved, and the freeze thawing resistance, weather resistance and drying and wetting cycle resistance capability of cave dwellings are improved.

Description

technical field [0001] The invention relates to the field of building materials, and in particular to a wall repair material and a preparation method thereof. Background technique [0002] With the implementation of the policy of afforestation and returning farmland to forests in northern Shaanxi, the environment in northern Shaanxi has undergone significant changes. The average annual rainfall has increased, and heavy rainfall often occurs during the flood season from July to September. Changes in the environment and climate have damaged some loess buildings. Loess caves are typical of loess buildings. Due to the increase in annual average rainfall, the water content in the loess around the caves has increased. At the same time, the process of water loss inside the soil has resulted in Moisture inside the wall continuously migrates to the inner wall of the loess cave, which will cause the dissolution of the cementing material between the soil particles on the loess wall, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/20C04B111/72
CPCC04B28/14C04B2111/2038C04B2111/72C04B18/248C04B18/146C04B14/10C04B22/064
Inventor 裴向军周立宏张晓超贾栋钦杨帅任童林皓然朱利君
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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