It has good drape characteristics, allowing it to take the shape of complex surfaces including those with double curvature; * Strong-the fiber reinforcement acts to prevent cracking, absorbs energy from impacts, and provides a stable failure mode; * Fireproof-Concrete Cloth is a ceramic-based material and will not burn; * Waterproof-the PVC backing on one surface ensures that Concrete Cloth is completely waterproof; * Adaptable-Concrete Cloth is currently supplied on 1.2 m (4 ft) wide rolls but can be manufactured with a roll width of up to 5 m (16.4 ft). OTHER USES Concrete Cloth can be used to rapidly create waterproof, fireproof, fiber-reinforced, thin concrete forms across a wide range of applications, including rapid roadway or landing surfaces, structural reinforcement, canal lining, tunnel lining, ground stabilization, and improvement of ballistic protection.
Concrete Cloth a new product being tested on the frontlines in afghanistan by William CraWford aNd Peter breWiN T he British Army just placed a sizeable order for an innovative new material that combines the flexibility of fabric with the structural performance of concrete. The British Army quickly saw potential uses for this new material and started trials using Concrete Cloth as a method of reinforcing sandbag defenses. This solution, Unlike anything else on the market, this revolutionary shown in Fig. 1, reduces degradation of sandbag walls technology enables the use of concrete in a completely in harsh environments such as Afghanistan, where the new way. The product, called Concrete Cloth, was combination of wind, sand, and extreme temperatures developed by a British engineering company called mean frequent repairs to frontline defenses. In addition, Concrete Canvas. It will soon be used to enhance front- damage is caused by incoming fire and outgoing muzzle line defenses in Afghanistan. flash. Concrete Cloth is completely fireproof and has The story behind its inception is somewhat unusual. performed very well during range trials where it was Four years ago, we entered a competition run by the tested with small- and medium-caliber weapons. The British Cement Association. At the time, we had no material comes in 10 m (33 ft) rolls to eliminate the need idea that our entry for a rapidly deployable emergency for heavy lifting equipment and plant machinery. This is a shelter would result in the launch of our own technology big advantage when operating in remote areas where development company. Our research has now included most supplies have to be transported by helicopter. The trips to disaster zones around the world, including material is then simply unrolled over the sandbag wall, Uganda and New Orleans. secured using battens, and sprayed with water. A durable Four years later, the concept has matured into a and hard wearing surface is produced within 24 hours. technology that has applications far beyond emergency Key to the success of the material is the fibers that form a shelter. Following development funded through a reinforcing matrix within the Concrete Cloth. These provide a combination of private equity investment and grants, stable failure mode, absorb energy, and help maintain the the company relocated to a dedicated production site in structural integrity of the concrete when impacted. A ballistic South Wales, UK, where we have begun volume production projectile will pass through the cloth, but crack propagation of Concrete Cloth and Concrete Canvas Shelters. is limited. The sand in the sandbag is therefore retai
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