Concrete Cancer and Discrimination – Day Twenty-Two

Reinforced concrete was once called “liquid stone.” It is made of a combination of three main ingredients: 65% aggregates such as sand, gravel, crushed rock, recycled glass; 10-15% cement (calcium silicates and aluminates); and 15-20% water: and was invented in 1867 by Joseph Monier. The word “concrete” is derived from the Latin concretus that means,… Continue reading Concrete Cancer and Discrimination – Day Twenty-Two