Sustainable construction practices have and will continue ... As an example, expanded shale, clay and slate (ESCS) lightweight aggregates are fired in rotary kilns and so represent a significant ...

Light alloys and light metals have low density and high strength-to-weight ratios. They are generally characterized by low toxicity in comparison to heavy metals, although beryllium is an exception.

There are a number of different metals to consider. Aluminum is a lightweight, corrosion resistant metal commonly used as a tube material for both plumbing and construction applications. By itself, ...