Concrete Technology And Design Of Concrete Structures Set 2

top face perpendicular to wall ✘ bottom face perpendicular to wall ✘ both top and bottom faces perpendicular to wall ✘ none of the above ✔

24 to 48 hours ✘ 3 days ✘ 7 days ✘ 14 days ✔

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

less ✘ more ✘ equal ✘ none of the above ✔

0.003 ✘ 0.0003 ✘  0.00003 ✘ 0.03 ✔

bending moment and shear ✘ bending moment and torsion ✘ shear and torsion ✘ bending moment, shear and torsion ✔

1.5 and 2.2 ✘ 2.2 and 1.5 ✘ 1.5 and 1.5 ✘ 2.2 and 2.2 ✔

workability admixtures ✘ accelerators ✘ retarders ✘ air entraining agents ✔

less than 1 ✘ between 1 and 1.5 ✘ between 1.5 and 2.0 ✘ greater than 2 ✔

2%

✘

4%

✘

6%

✘

8%

✔