Concrete cloth, scientific name cement blanket, is a kind of soft cloth impregnated with cement. When it meets water, it will hydrate and harden into a thin waterproof, fireproof and durable concrete layer. The design idea of concrete canvas was first put forward by Brewin and Crawford in Britain in 2004.
Cement blanket, that is, concrete canvas, is a patented product, which has been protected by relevant institutions in many countries, including the World Intellectual Property Organization and the United States Patent and Trademark Office. ?
Main components: The concrete canvas is made of 3D fiber matrix woven with polyethylene and polypropylene filaments, and contains dry concrete mixture with special formula. The main chemical components of calcium aluminate cement are Al2O3, CaO, SiO2 and Fe2O3. The bottom of the canvas is covered with a PVC backing.
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As a new environmental protection material, cement blanket has been widely used in military and civilian buildings, road sites, post-disaster reconstruction, ecological restoration, furniture design and composite pipes abroad. It consists of three-dimensional fiber felt and composite concrete dry powder material. It has the properties of heat preservation, rapid setting and hardening, flame retardant, waterproof, windproof, bending resistance and corrosion resistance.
Due to the limitation of production equipment, staff skills and sense of responsibility, domestic cement boards have quality defects (poor compressive strength, small flexural strength, water seepage, frost resistance, easy damage and corrosion, etc.). ), causing irreparable losses to users. Another problem is that the specifications of the cement blanket prepared by the manufacturer are fixed (5m10m) and the thickness is single (10 mm). In the concrete construction, most of them need to be cut and trimmed, which leads to too many connection points and affects the construction progress.
Cement blanket construction, site preparation, random installation, no thickness limit, no size limit. The thickness varies from 6mm, 1 0mm,15mm, 20mm and 25mm, and the length varies from1m, 2m, 5m,10m, 20m, 50m and100m. ..
As a new construction technology, cement blanket construction solves the quality shortage of cement blanket preparation and makes up for the quality defect of incomplete curing of sprinkler cement blanket. More importantly, "cement blanket construction", as an upgrade of cement blanket products, has expanded the application field.
Expanded the environmental requirements for construction: construction can also be carried out at MINUS 10 degrees.
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