Concrete is a composite material made of cement, coarse aggregate, and
fine aggregate and water. Recently High Strength Concrete (HSC) is being widely
used in many applications. Concrete having compressive strength more than 60MPa
is termed as HSC. It can be achieved by increasing the cement content and reducing
water content by the addition of super plasticizers. HSC are brittle in nature
and they are ready for plastic shrinkage in earlier stage. In order to reduce
the brittleness and shrinkage effect fibers are used in HSC. Incorporation of
polypropylene fiber in High Strength Concrete (HSC), reduced the spalling and
cracking. This was achieved via melting and consequently, creating added escape
routes for vapour pressure. In this work an attempt has been made to study the
effect of exposure to elevated temperature upon high strength fiber reinforced
concrete. The percentage of fiber considered for this investigations are 0.2%,
0.4% of volume of concrete mix at 100 0C, 2000 C, 3000 C, 4000 C for sustained
duration of 24hrs of exposure. The tests have been carried out as per
recommended procedures of relevant codes and previous investigations. The
results are compared and conclusions are made. - See more at:
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