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Group I contains representative stress-strain curves as shown in the figure, while Group II gives the list of materials. Match the stress-strain curves with the corresponding materials. Group I Group II P. Curve J 1. Cement paste Q. Curve K 2. Coarse aggregate R. Curve L 3. Concrete

Group I contains representative stress-strain curves as shown in the figure, while Group II gives the list of materials. Match the stress-strain curves with the corresponding materials. Group I Group II P. Curve J 1. Cement paste Q. Curve K 2. Coarse aggregate R. Curve L 3. Concrete Correct Answer P - 2; Q - 3; R - 1

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Stress strain for cement-paste:

The stress-strain curve for hardened cement paste is almost linear as shown in the figure.

Stress strain for aggregate:

The aggregate is more rigid than the cement paste and will therefore deform less (i.e. have a lower strain) under the same applied stress.

Stress strain for concrete:

The stress strain curve of concrete lies between those of the aggregate and the cement paste. However this relationship is non-linear over the most of the range.

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