Concrete Technology Set 1

Option1 ✘ Option2 ✘ Option3 ✘ Option4 ✔ Option5 ✔ Option7

setting time ✘ soundness ✘ tensile strength ✘ consistency ✔



all the above ✔

0% ✘ 0% ✘ 0% ✘ 0% ✔ 0% ✔

7 days for beam soffits ✘ 14 days for bottom slabs of spans 4.6 m and more ✘ 21 days for bottom beams over 6 m spans ✘ 2 days for vertical sides of columns ✔ all the above ✔

thin particles ✘ flat particles ✘ elongated particles ✘ laky paticles ✔ all the above ✔

1 : 3 : 6 mix

✘

1 : 1 : 2 mix

✘

1 : 2 : 4 mix

✘

1 : 1.5 : 3 mix

✔ none of these ✔

single sized aggegates ✘ two sized aggregate ✘ graded aggregates ✘ coarse aggregates ✔

3 ✘ 4 ✘ 5 ✘ 6 ✔ 7 ✔

1000 ✘ 1200 ✘ 1400 ✘ 1600 ✔ 1800?C ✔

wetter mix ✘ larger proportion of maximum size aggregate ✘ coarser grading ✘ all the above ✔