A Natural ChoiceAccording to the Portland Cement Association and the Environmental Council of Concrete Organizations, concrete is a natural choice for sustainable construction for the following reasons. Resource Efficiency The predominant raw material for the cement in concrete is limestone, the __ most abundant mineral on earth. Concrete can also incorporate recycled materials such as fly ash, slag cement and silica fume. Durability Concrete builds durable, long-lasting structures that will not rust, rot or burn. Life spans for concrete building products can be double or triple those of other common building materials. Thermal Mass Structures built with concrete walls, foundations and floors are highly energy efficient because they take advantage of concrete's inherent thermal mass ability to absorb and retain heat. This means a reduction in heating and |
