Do you know the origin of cement blanket?

Concrete cloth is a kind of soft cloth impregnated with cement. When it meets water, it will react with water to form a very thin waterproof and fireproof durable concrete layer. The product is a patented product, which has been protected by many related organizations, including the World Intellectual Property Organization and the United States Patent and Trademark Office. The patent numbers include "ca2655054", "ep2027319", "gb2455008" and "wo2010 / 086618".

In the product introduction of some building materials companies abroad, the concrete canvas adopts the 3D fiber matrix woven by polyethylene and polypropylene filament, and contains dry concrete mix with special formula. The main chemical components of calcium aluminate cement are Al2O3, Cao, SiO2 and Fe2O3. The bottom surface of the canvas is covered with polyvinyl chloride (PVC) backing to ensure that the concrete canvas is completely waterproof.

It turns out that this amazing cement blanket is inseparable from our polyethylene and polypropylene materials. From this, our composite materials are really everywhere. However, after such complex forging and refining, it is no wonder that the birth of the cement blanket can make such a big stir!

The origin of "cement blanket"

According to the introduction of relevant academic papers, the design idea of concrete canvas was first proposed by brewin and Crawford in 2004. In the early years, some foreign building materials companies have been engaged in R & D and production, and have been widely used in agricultural irrigation channels, industrial and civil drainage ditches, railway embankment drainage ditches and highway drainage ditches.

In fact, it combines traditional cement and textile fiber technology, and integrates impermeable and multifunctional concrete powder into the fiber skeleton. It has the characteristics of water-proof, moisture-proof, fire-proof and durable, and completely solves the problem of concrete cracking.

"New type of cement blanket" can be widely used in railway, highway, water conservancy, agricultural irrigation and other fields! Most importantly, Hanji cement blanket can not only save 90% of the material, but also shorten the construction period by 60%.

In the product introduction of some building materials companies abroad, the concrete canvas adopts the 3D fiber matrix woven by polyethylene and polypropylene filament, and contains dry concrete mix with special formula. The main chemical components of calcium aluminate cement are Al2O3, Cao, SiO2 and Fe2O3. The bottom surface of the canvas is covered with polyvinyl chloride (PVC) backing to ensure that the concrete canvas is completely waterproof.

On February 8, 2011, in order to prevent the waste coal gangue from scouring the drainage ditch, the coal mine in kaffi County, Wales, UK, used bulk large roll concrete canvas to lay a layer, reaching 2000 square meters. It is reported that when the concrete canvas is under construction on site, no concrete mixing equipment is needed at the site, as long as the concrete canvas is simply watered or soaked in water to make it hydrated. After solidification, the fiber can strengthen the concrete and prevent cracking.