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LOSS OF PRESTRESS DUE TO SHRINKAGE OF CONCRETE
We know that concrete shrinks in volume when it dries up. This volume reduction takes place in the form of reduction of all dimensions. A major i reduction of dimensions in a beam element is expected to take place along the length as all dimensions proportionally reduce. The shrinkage of concrete in prestressed members results in a shortening of ensioned wires and hence contributes to the loss of stress. The shrinkage of concrete is influenced by the type of cement, aggregates and the method of curing used.
Distinguish among 'active' and 'passive' earth pressure. Describe clearly Rebhann's graphical construction method to evaluate the earth pressure on a retaining wall. What are t
The total equipment cost for an addition to a pharmaceutical plant is estimated to be $5,000,000. The percentages provided in the Table represent the average expenditures in other
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Question In a concrete compression test , usually 150mmx150mmx150mm concrete cube examples are used for testing. Why isn't 100mmx100mmx100mm concrete cube samples used in test in
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