Building Material [2]
56) The density of concrete ................. with increase in
the size of aggregate.
-
(a) does not change
-
(b) increases
-
(c) decreases
57) The strength of cement concrete is directly
proportional to cement-water ratio.
58) The shrinkage of concrete
-
(a) is proportional to contents of cement
-
(b) is directly proportional to water contents at the time of mixing
-
(c) increases with increase in the percentage of concrete
-
(d) all of the above
59) The shrinkage of concrete ................. its bond
strength.
-
(a) does not change
-
(b) increases
-
(c) decreases
60) The shrinkage of ordinary concrete is about
-
(a) 0.1 to 0.3 mm/m
-
(b) 0.3 to 0.6 mm/m
-
(c) 0.6 to 1.2 mm/m
-
(d) 1.2 to 2.1 mm/m
