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Durability requirements for Concrete
Even though the alkaline environment of concrete protects steel, carbonation of hydrated cement may decrease the effective protection. The codes give guidelines regarding the minimum cover to be provided to the reinforcement and the density of concrete for this purpose.
minimun difference in level of inlet and oulet pipe level invert in manhole
Tests on Cement: The following tests are conducted on cement in a project site: Setting Time Initial setting time Final setting time Compressive Streng
Explain the Routine inspections - inspection of bridge? These determine the physical and functional condition of the structure, identifying changes from the inventory, baseline
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Figures (a) and (b) respectively give details of a simply-supported bridge beam and its (idealised) cross-section. In addition to the dead load of 25 kN/m (including self weight),
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Physical Tests on Cement (a) Soundness Test: by sieve analysis, it is conducted. 100 gms of cement is taken and sieved throughout IS sieve No. 9 for fifteen minutes. Residue on
Q. Define Well Steoning? It is the side wall of well foundation. It is built of masonry or cement concrete not less than M 10 grade, sufficient bond rods should be provided to
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