In the Late Classic Period Yaxchilan was one of the most powerful Maya cities along the course of the Usumacinta, with Piedras Negras as its major rival. Architectural styles in subordinate sites in the Usumacinta region demonstrate clear differences that mark a clear boundary between the two kingdoms.
Answered by The Community. Making the world better, one answer at a time. Steel is not usually considered a composite, as it is macroscopically homogeneous. However, some steel types, including classical iron-carbon steel, can be considered as metal-matrix composites, as they contain a second phase... sometimes.
FAQâS: Steel Fiber Reinforced Concrete What is steel fiber reinforced concrete (SFRC)? SFRC is a composite material made of hydraulic cements, water, fine and coarse aggregate, and a dispersion of discon-tinuous, small fibers. It may also contain pozzolans and admixtures commonly used with conventional concrete.FRC is a composite material made of hydraulic cements, water, fine and coarse aggregate, and a dispersion of discon-tinuous, small fibers. It may also contain pozzolans and admixtures commonly used with conventional concrete.