The specimen size, shape, and friction at its ends are the three main variables that influence the results of concrete compression.
These elements have an impact on the phenomena that are witnessed and on one another. The goal of this work is to evaluate the current understanding of concrete compression and how size, shape, and friction affect it. The following factors affect how fire resistant concrete structures are: element size and shape, concrete type, type of reinforcement, provision of protective concrete cover for the reinforcement, load supported, and restraint circumstances. When exposed to fire, concrete degrades and suffers greatly from loss of mechanical qualities like strength, elastic modulus, and volume deformation. But when concrete is subjected to intense heat from a long-burning fire, it loses most of its structural strength properties. Concrete gets damaged more severely the longer it is left exposed.
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