High-performance historic site repair material and preparation method thereof

A repair material and high-performance technology, applied in the field of high-performance monument repair materials and their preparation, can solve problems such as compatibility restricting the quality of repair projects, and achieve the effect of high strength, toughness and good compatibility

Inactive Publication Date: 2014-10-29
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defects of these two types of materials are gradually exposed during the restoration process, and their compatibility with the materials of the monument body has become a bottleneck restricting the quality of restoration projects.

Method used

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  • High-performance historic site repair material and preparation method thereof
  • High-performance historic site repair material and preparation method thereof
  • High-performance historic site repair material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Weigh the corresponding quality of glutinous rice and deionized water according to the concentration of glutinous rice pulp to be prepared, soak the glutinous rice in deionized water for 24 hours, then boil it in a pot for 2 hours, use a cooking machine to make glutinous rice juice, and supplement the preparation process evaporated water.

[0035] 2. Weigh 287 parts of glutinous rice pulp with a mass concentration of 8%, 115 parts of lime, 344 parts of river sand, 243 parts of composite mineral admixture, CaSO 4 2H 2 O 11 parts, placed in a mortar mixer and forced to stir, that is, made into a high-performance monument repair material.

[0036] The above-mentioned composite mineral admixture contains 94.2% by mass percentage of slag powder and 5.8% of silica fume.

[0037] The superplasticizer is methacrylic acid main chain grafted with EO or PO branched polycarboxylic acid.

[0038] The fineness of the composite mineral admixture is less than 80 μm, and parti...

Embodiment 2

[0044]Take by weight 224 parts of glutinous rice pulp with a mass concentration of 8%, 124 parts of lime, 373 parts of fine aggregate, 268 parts of composite mineral admixture, CaSO 4 2H 2 O12 parts, placed in a mortar mixer and forced to stir, that is, made into a high-performance monument repair material.

[0045] The above-mentioned composite mineral admixture contains 92.5% by weight of slag powder, 6% of silica fume, and 1.5% of superplasticizer.

[0046] The superplasticizer is methacrylic acid main chain grafted with EO or PO branched polycarboxylic acid.

[0047] The fineness of the composite mineral admixture is less than 80 μm, and particles with a fineness of <400 nm account for 0-8%.

[0048] The particles of 1.0-5.0 mm, 0.5-1.0 mm and 0.08-0.5 mm each account for 1 / 3 of the fine aggregate.

[0049] The obtained repair material had a flexural strength of 3.3MPa and a compressive strength of 19.3MPa at 7d, a flexural strength of 3.1MPa at 14d, a compressive stren...

Embodiment 3

[0052] Take by weight 224 parts of glutinous rice pulp with a mass concentration of 8%, 125 parts of lime, 374 parts of river sand, 266 parts of composite mineral admixture, CaSO 4 2H 2 O12 parts are placed in a mortar mixer for forced stirring to make a high-performance monument repair material.

[0053]

[0054] The above composite mineral admixture contains 93.6% by mass of slag powder, 6% of silica fume, and 0.4% of superplasticizer.

[0055] The superplasticizer is methacrylic acid main chain grafted with EO or PO branched polycarboxylic acid.

[0056] The fineness of the composite mineral admixture is less than 80 μm, and particles with a fineness of <400 nm account for 0-8%.

[0057] The particles of 1.0-5.0 mm, 0.5-1.0 mm and 0.08-0.5 mm each account for 1 / 3 of the fine aggregate.

[0058]

[0059] The obtained repair material had a flexural strength of 3.1MPa and a compressive strength of 19.3MPa at 7d, a flexural strength of 3.7MPa at 14d, a compressive strength...

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Abstract

The invention provides a high-performance historic site repair material and a preparation method thereof. The repair material comprises the following raw materials: 191-287 parts of sticky rice pulp, 115-185 parts of lime, 0-4 parts of brown granulated sugar, 344-398 parts of fine aggregates, 204-268 parts of complex mineral admixture, 11-12 parts of reinforcing agent, and 0-19 parts of mineral pigment. The invention further provides a preparation method of the repair material. The preparation method comprises the following steps: weighing all the raw material according to weight, and forcibly stirring evenly to obtain the repair material. Amylopectin in the sticky rice pulp is a highly branched macromolecule, the setting and hardening processes of the lime and the pozzolanic reaction of the complex mineral admixture are influenced, the strength development of the material is similar to biomineralization process, and a microstructure formed in the process endows the repair material with higher strength and toughness. Furthermore, the material has good compatibility with materials of a historic site body.

Description

technical field [0001] The invention belongs to the field of preparation of historic site repair materials, and in particular relates to a high-performance historic site repair material and a preparation method thereof. Background technique [0002] During the "Twelfth Five-Year Plan" period, my country will carry out 150 major site protection projects, and complete the Niuheliang Site, Liangzhu Site, Tongguan Kiln Site, Yangzhou City Site, Imperial Kiln Factory Site, Qin Xianyang City Site, and Southern Song Dynasty Lin'an City Site 25 key protection and exhibition projects, including the ruins of Laosicheng, the ruins of the ancient Shu Kingdom, and the tombs of the Xixia kings. At present, there are two main repair materials for these projects, one is cement-based cementitious materials, and the other is high-molecular organic polymers. The defects of these two types of materials are gradually exposed during the restoration process, and their compatibility with the materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B26/28
Inventor 杨华山车玉君
Owner WUHAN UNIV
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