Concrete Technology and Design of Concrete Structures
As compared to ordinary portland cement, high alumina cement has

higher initial setting time but lower final setting time
higher initial and final setting times
lower initial and final setting times
lower initial setting time but higher final setting time

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Concrete Technology and Design of Concrete Structures
Select the incorrect statement...

Pretensioning system has greater certainty about its durability.
The loss of prestress is more in pre-tensioning system than in post-tensioning system.
For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system
None of these

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