Concrete Technology and Design of Concrete Structures
High carbon content in the steel causes

increase in both tensile strength and ductility
decrease in both tensile strength and ductility
increase in tensile strength but decrease in ductility
decrease in tensile strength but increase in ductility

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

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

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