concrete – Page 2 – TechConnect Briefs

Recovery of High Quality Aggregate from Concrete Waste using Pulsed Power Technology

I’izasa S., Shigeishi M., Namihira T., Kumamoto University, JP

In Japan, the most of waste concrete scraps have been eused as roadbed materials and the recycling ratio of waste concrete scraps has been kept over 95 % from 2000. However, it is expected that [...]

Nano-scale TEM studies of the passive film and the chloride-induced depassivation of carbon steel in concrete

Ghods P., Isgor O.B., Li J., Carpenter G., McRae G., Gu G.P., Carleton University, CA

In the highly alkaline environment of concrete, carbon steel rebar is protected against corrosion by a passive iron oxide film. The partial or complete loss of the protective oxide film, known as depassivation, leads increased [...]

Environmentally Intelligent Integral Waterproofing and Corrosion Protection for Concrete

Veramallay S., Horan T., Hycrete, Inc., US

Hycrete is a proven admixture for concrete that makes the concrete waterproof and protects the steel reinforcement from corrosion. The material itself is a nanotechnology and is Cradle-to-Cradle certified as an environmentally intelligent product. Concrete [...]