What are the common minerals found in various kinds of aggregates used in concrete?

(a) In general, which provides better fire performance, carbonate or silicate aggregates? Why? (b) Why does fire design incorporate a load reduction factor (Dfire) = 1.0? (c) Two identical beams (Beam 1 is simply supported, and Beam 2 is fully restrained) are heated under similar conditions. What does the mechanical strain equal to in each of these beams? (d) A design office located in Clemson, SC (with a branch in San Francisco, CA) envisions designing a new composite member made of steel and timber. This to-be designed member is expected to be used in wildfire-prone regions primarily for single family homes. Comment on how you would design such a member to achieve superior fire performance. (e) Plot and discuss the expected degradation faces in three bending elements (say, beams) to be made from concrete, steel and timber?

Lightweight Concrete Present and Future applications

The strength of cement is determined by a number of factors.