![]() The tensile strength as well as the modulus of elasticity of concrete are both proportional to the square-root of its ultimate strength, fc, and can be approximated by ft = 6 fc…………(1.1), Ec = 57500 fc…………(1.2). 1.1(ii) shows a typical set of such curves. strain () relationship in compression is nonlinear. ![]() While its tensile stress-strain relationship is almost linear, the stress () vs. Stress-Strain Curve for Concrete Concrete is much stronger in compression than in tension (tensile strength is of the order of one-tenth of compressive strength). It provides a unique coupling of two materials (concrete, steel) with entirely different mechanical properties. From a structural analysis and design point of view, RC is a complex composite material. Due to the ready availability of its constituent materials, the strength and economy it provides and the flexibility of its forms, RC is often preferred to steel, masonry or timber in building structures. Reinforced Concrete (RC, also called RCC for Reinforced Cement Concrete) is a widely used construction material in many parts the world. ![]()
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