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QuestionIf concrete compression test not pass, So Schmidt hammer test will be adopted as an alternative test to confirm concrete strength?
AnswerSchmidt hammer test is support on elastic rebound of hammer which presses on concrete surface and it method surface hardness of concrete. Because test is too sensitive to presence of aggregates and voids at concrete surface, it is essential to take more than 10 readings over area of test. Though, it has to be noted that Schmidt hammer test process surface hardness only but not strength of concrete. So, it might not be considered a high-quality substitute for concrete compression test.
Why IRC 37-2012 has taken 90th percentile for pavement design of expressway or NH while they hav taken 80th percentile for state highway design ????????
Explain the term - Uniaxial - Biaxial -Triaxial Prestressing These terms refer to cases when the concrete is prestressed in only one direction, in two mutually perpendicular di
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Question While designing sewer pipes , why vitrified clay pipes commonly is used for pipe size less than 600mm still as precast concrete pipes with PVC lining is used for pipe
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A wall with a smooth vertical back 9 m high ropes a purely cohesive soil with c = 10 kN/m 2 and γ = 18 kN/m 3 . State the total Rankine active thrust per metre run, the positi
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