An anti-seepage geotextile for building surface gaps and its manufacturing method

Abstract

The invention discloses an anti-leakage geotextile for a surface crack of a building and a manufacturing method thereof. The geotextile is a three-layer structure. The upper layer is of a water-repelling polyester filament material layer. The middle layer is of a silicate affinity fibre material layer. The lower layer is of a hydrophilic polyester filament material layer. The three layers are compounded into the geotextile in one manner of knitting, needling and spunlacing. A sintered layer formed by singeing is formed on at least one of upper and lower surfaces of the geotextile. The manufacturing method comprises the following steps of: preparing for materials; pre-treating; carding fibres of the three layers; laying a net; compounding and forming; singeing; post-treating; rolling; and storing. Different from the traditional product, the silicate affinity fibre layer tightly staggered with the polyester filament layer is additionally arranged; the silicate affinity fibre layer can be completely fused together with cement; and the geotextile disclosed by the invention can be widely applicable to national infrastructures and civil facilities.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an anti-seepage geotextile used for gaps on the surface of building bodies and a manufacturing method thereof. Background technique [0002] With the national urbanization construction and massive investment in infrastructure, whether it is new municipal facilities in cities or water conservancy construction in rural areas, the demand for maintenance building materials for new construction and depreciation projects in my country is very large, including the prevention of cracks on the surface of buildings. Leakage with geotextiles. [0003] Traditional polyester filament geotextiles are directly made by polyester method through spinning and needle punching consolidation, and the product specifications range from 80 to 800g / m 2 , which is a geosynthetic material commonly used in geotechnical engineering and civil engineering, is made by the method of polyester filament forming...

AI Technical Summary

Problems solved by technology

[0008]It is also because of the vertical and horizontal drainage properties of polyester filament geotextiles that no cracks can be found in the leaking gaps; and there are no gaps in the cracks, resulting in Blindly filling leaks and repeatedly filling leaks, resulting in a lot of waste of manpower and financial resources

[0009]The traditional anti-seepage process focuses on the adhesion and filling degree of asphalt materials to the surface of Portland concrete. However, the physical properties of these two types of materials are very different. Under the conditions of irradiation and heating, the density, expansion, hardness, and oxidation degree of the two are different. The traditional polyester filament geotextile layer only acts as a base cloth for the asphalt material. There is no adhesion between the concrete surfaces, causing the asphalt layer to peel and crack once the water vapor expands

[0010]Because most of the buildings are exposed to the outdoors, with the continuous emergence of extreme temperatures in the world, the previous anti-leakage methods of asphalt felt and poured building surfaces have been eliminated. Far from meeting the needs of social development

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