Concrete surface carbonization resistance increasing template

A concrete surface and anti-carbonation technology, which is applied to the preparation of formwork/formwork components, building components on site, construction, etc., to achieve the effects of reducing voids, improving carbonation resistance, and reducing water-binder ratio

Inactive Publication Date: 2015-04-15
QINGDAO HAIYUNCHUANG NEW BUILDING MATERIAL
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  • Abstract
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AI Technical Summary

Problems solved by technology

Filter cloth attached to the inner surface of the formwork

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] C30 column, 2.8 meters high, using ordinary concrete formwork and adding concrete surface anti-carbonation formwork for comparison, the admixture is added 40%, and the slump is 210mm. After pouring, the ordinary mold is well sealed and there is no water seepage. Increase the anti-carbonation formwork of the concrete surface, the surface has good water permeability, and no concrete slurry is secreted. The purpose of reducing the water consumption of concrete is achieved without affecting the appearance and shape of concrete.

[0010] After 28 days of outdoor testing, the carbonation depth of the concrete formed by ordinary formwork is 6.2mm. Increase the carbonation depth of the concrete formed by the anti-carbonation formwork on the concrete surface to 1.7mm to achieve the purpose of improving the carbonation resistance of the concrete.

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PUM

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Abstract

The invention discloses a concrete surface carbonization resistance increasing template. 5 to 10 millimeters round holes are opened in four sides of an ordinary template according to the interval of 100 to 300 millimeters, wherein the round holes are uniformly distributed in the template. A piece of filter cloth attaches to the inner surface of the template. After pouring concrete, water is extruded from the concrete, when the concrete passes through the filter cloth, the water automatically passes through the filter cloth, and the concrete stays in the template in a designed shape. The concrete surface carbonization resistance increasing template is capable of lowering the surface moisture content of the concrete, lowering the water-binder ratio, reducing gaps, increasing the compactness, improving the durability and improving the carbonization resistance. The anti-chloride-corrosion ability of the outer surface of the concrete at such special parts as an anti-seawater-corrosion part is improved. According to the concrete with much coal ash and mineral powder, the easiness in concrete surface carbonization and large carbonization phenomenons are reduced. The concrete surface carbonization resistance increasing template enables the potential quality hazard due to adding water on site by a laborer to be lowered, the concrete intensity to be guaranteed, the surface carbonization to be lowered, and the durability to be improved.

Description

technical field [0001] The invention relates to a formwork for building material concrete, in particular to a formwork used for forming concrete, especially the formwork can increase the strength and surface durability of concrete and reduce the carbonation depth of concrete. Background technique [0002] Concrete is one of the most important civil engineering materials today. Buildings have higher and higher requirements on the strength and durability of concrete. In some special parts, the concrete must have high surface corrosion resistance, good surface compactness, and good carbonation resistance. The solution to such problems through concrete mix ratios is mainly to reduce water consumption, which requires high quality raw materials and high costs. At the same time, the viscosity of concrete is increased, which makes the constructability of concrete worse. Contents of the invention [0003] In the present invention, circular holes of 5-10 mm are opened around the c...

Claims

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Application Information

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IPC IPC(8): E04G9/10
Inventor 王赛显江涛胡双锐栾亮
Owner QINGDAO HAIYUNCHUANG NEW BUILDING MATERIAL
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