CE2257 STRENGTH OF MATERIALS LABORATORY

1. (a) Conduct compression test on the given mortar cube and Brick samples.

(b) Draw qualitative stress-strain curve for concrete.

2. (a) Draw stress-strain curve for a mild steel rod and explain salient points on the curve.

(b) Conduct Tension test on the given mild steel rod and determine the following.

(i) Young's modulus

(ii) yield stress

(iii) ultimate stress

(iv) percentage of reduction in cross sectional area

3. (a) What is an extemometer? Write down its uses.

(b) Conduct tension test on the given steel rod and nd the following:

(i) Modulus of Elasticity

(ii) Breaking stress

(iii) Percentage of Elongation in length

(iv) Percentage of reduction in cross sectional area

4. Conduct Torsion test on the given mild steel rod and nd modulus of rigidity of the given

specimen.

5. (a) State Maxwell's Reciprocal theorem.

(b) Determine the Young's modulus of the material of the steel beam by conducting the

de

ection test.

6. Conduct compression test on an open coiled helical spring and determine the following.

(a) Shear modules

(b) Sti ness of the spring

(c) Proof load

(d) Strain energy stoled by the spring

7. Conduct Tension test on the given helical spring and determine the following:

(a) Modules of rigidity

(b) Sti ness

(c) Strain Energy

8. De ne Hardness. Determine the Brinells Hardness number for the given specimens.

9. (a) Determine the Rockwell's Hardness number for the given specimens

(b) Conduct the compression test on the given brick samples.

10. (a) Conduct a double shear test on the given mild steel rod.

(b) Determine the Rockwell's Hardness number for the given specimens.

11. (a) Determine the impact strength of the given specimen

(b) Determine the shear strength of the given specimen.

12. (a) Determine the speci c gravity of the given cement sample.

(b) Determine the soundness of the given cement sample.

13. (a) Determine the initial setting time of the given cement.

(b) Determine compressive strength of the given mortar cube.

14. (a) Find the consistency of the given cement.

(b) Conduct Fineness test on cement.

15. Conduct a compression test on the given cylindrical concrete specimen and draw the stress-

strain curve for that specimen.

16. Determine shear modulus for the given specimen by conducting torsion test.

17. (a) Conduct Izod's impact test on the given specimen.

(b) Determine shear strength of the given mild steel rod.

18. (a) Determine impact strength of the given specimen by conducting charny's test.

(b) Conduct soundness test on cement.