The etreeeetrain relationehipe of two concrete mixee are eho

The etreee-etrain relationehipe of two concrete mixee are ehown in the following eketch, marked as 1 and 2. Determine which mix: (a) hae greater etrength. 2 (b) hae higher modulue of elaeticity and why. Strain Ultimate strain of Mix 2 Ultimate strain of Mix 1 (d) is relatively more ductile and wh y.

Solution

1) Curve 1 has higher strength because ultimate stress is more for curve 1.

2) Curve 2 has higher modulus of elasticity because curve 2 has mor slop than 1 since it is above 1.

3) Curve 1 is relative more ductile because ultimate strain for this mix is more. Stain is more means elongation is more in plastic region. Means more ductile.