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Protective material and application thereof as protective layer for building surfaces and in repair of corroded parts of buildings

A protective material and moisture protection technology, applied in building maintenance, building construction, construction, etc., can solve the problems of organic coatings such as difficulty in guaranteeing long-term performance, difficult repair construction, poor anti-aging performance, etc., to achieve raw material ratio and particle size The gradation is scientific and reasonable, the effect of improving the difficulty of construction and increasing the bonding strength

Active Publication Date: 2018-09-25
YELLOW RIVER ENG CONSULTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary mortar materials are cement-based materials, which have poor waterproof effect and are easily deteriorated and damaged under decomposition corrosion conditions; while organic coatings have poor anti-aging performance, and the long-term performance of organic coatings is difficult to guarantee under harsh conditions
For parts that have been corroded, due to the uneven surface, repair construction is extremely difficult, and it is easy to cause bulges and punctures

Method used

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  • Protective material and application thereof as protective layer for building surfaces and in repair of corroded parts of buildings
  • Protective material and application thereof as protective layer for building surfaces and in repair of corroded parts of buildings
  • Protective material and application thereof as protective layer for building surfaces and in repair of corroded parts of buildings

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The protection material described in the present invention is 100g of raw material silicate 42.5 cement; 200g of clean natural fine sand with a particle size less than 1.18mm (can be adjusted within 150~250g according to actual needs, and note that the mud content is not more than 3%. Moisture content not greater than 0.2%); 0.15g of Dura fiber with a nominal length of 20mm and an equivalent diameter of 40μm; 5g of moisture migration inhibitor; 5g of metakaolin mixed;

[0043] Among them, metakaolin is obtained by calcining commercially available kaolin at 750°C~800°C, and then grinding to a fineness of 500 mesh; in order to ensure the use effect of the final protective material, SiO in metakaolin 2The content is not less than 50%, Al 2 o 3 The content is not less than 40%, and the specific surface area is not less than 15000m2 2 / kg.

[0044] In order to improve the waterproof performance of the finished protective material, the water migration inhibitor used in the...

Embodiment 2

[0054] Repair corroded concrete, the corrosive type is heavy carbonic acid decomposition type medium corrosion. According to the actual situation, the damage model of the concrete slab was simulated and made. The model showed that the concrete mortar was lost, the aggregate was exposed, and the corrosion depth was about 15mm.

[0055] Prepare the protective material slurry according to the ratio of Example 1; clean the corroded surface, expose the fresh concrete interface, and keep the interface as flat as possible. During the construction process, keep the interface moist and free of clear water.

[0056] Apply a total of three layers, the thickness of the first layer is 5.5mm±0.5 mm, and the thickness of each subsequent layer is 5mm, and a layer of glass fiber mesh cloth is covered between the two layers of coating; when applying appropriate pressure, strive to make the coating dense. The maintenance method after smearing is the same as in Example 1.

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Abstract

The invention discloses a protective material, which is prepared by mixing 100 parts of Portland cement, 100 to 250 parts of natural fine sand, 0.15 to 0.20 part of dura fiber, 5 parts of moisture migration inhibitor and 3 to 8 parts of metakaolin. The invention further discloses application of the protective material as a protective layer for building surfaces and in the repair of corroded partsof buildings. The raw material varieties of the protective material disclosed by the invention is few, raw material proportioning and grain size gradation are scientific and reasonable, the waterproofeffect is outstanding, and the corrosion of concrete buildings caused by water quality can be effectively prevented; moreover, when the protective material is used as a repairing material, construction is convenient, and the difficulty of construction is greatly decreased.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a protective material for buildings. The invention also relates to the application of the protective material as a protective layer on the surface of buildings and for repairing corroded parts of buildings. Background technique [0002] Present building exterior walls all need construction protective coating, and some also need to lay insulation board on exterior wall, and construction protective coating is again outside insulation board. [0003] For high-altitude cold mountainous areas (such as Ganzi Prefecture, Sichuan Province, my country), the outer walls of buildings generally need to be laid with insulation board materials. The ultraviolet radiation in this area is strong, the temperature difference between day and night is more than 30°C, and the environmental conditions are extremely harsh. It is necessary to take protective measures for the outer layer of the insulatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/02E04B1/62E04G23/02C04B111/27C04B111/23C04B111/72C04B14/10C04B14/20
CPCC04B20/023C04B28/04C04B2111/00508C04B2111/23C04B2111/27C04B2111/72E04B1/62E04G23/0296C04B14/06C04B14/106C04B16/0633C04B14/20
Inventor 张金良苏茂林尚宏琦吴法辰景来红毛文然杨林陈学理
Owner YELLOW RIVER ENG CONSULTING
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