Landscape Contractor / Design Build Maintain

APR 2018

LC/DBM provides landscape contractors with Educational, Imaginative and Practical information about their business, their employees, their machines and their projects.

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Page 34 of 55

April 2018 35 I n f o r m a t i o n R e q u e s t # 4 4 3 Another Method for Autonomous Repair of Masonry New and Advanced Engineered Cementitious Composite (ECC) The Q1 2018 USG Corporation + U.S. Chamber of Commerce Commercial Construction Index reports that 50 percent of con- tractors rely on prefabricated and modular building materials, and of that amount, 89 percent do so to create more efficient job- sites, and 85 percent to increase labor productivity. The survey also found that 63 percent of re - spondents cited at least moderate demand for these materials. As reported here in February, U.S. researchers are devel- oping a self-healing concrete by mixing dormant spores of a fungus into it. Now, U.K. engineers have started to explore using bacteria paired with trigger chemicals that will produce minerals such as calcium carbonate to automatically repair damage to materials like brickwork, building stone, marble and granite. The overall goal is to create a product that can be applied as a liquid. Reinforced printable concrete has already been developed by adding polymers to the material. However, a research team from the University of Michigan has produced one that, according to project lead Daniel Soltan, "is the first printable cementitious composite that exhibits strain- hardening behavior, which is what makes it ultra-durable, self-healing, and bendable/stretchable." Using Prefab Materials to Increase Efficiency, Offset Labor Shortages

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