Workability of concrete is directly proportional to________________?
(A) aggregate cement ratio
(B) time of transit
(C) grading of the aggregate
(D) all of above
Approximate value of shrinkage strain in concrete, is________________?
(A) 0.003
(B) 0.0003
(C) 0.00003
(D) 0.03
The property of the ingredients to separate from each other while placing the concrete is called____________?
(A) segregation
(B) compaction
(C) shrinkage
(D) bulking
The angle between the prolongation of the preceding line and the forward line of a traverse is called ________________?
(A) deflection angle
(B) included angle
(C) direct angle
(D) none of the above
Subtense bar is an instrument used for _______________?
(A) levelling
(B) measurement of horizontal distances in plane areas
(C) measurement of horizontal distances in undulated areas
(D) measurement of angles
Overturning of vehicles on a curve can be avoided by using ________________?
(A) compound curve
(B) vertical curve
(C) reverse curve
(D) transition curve
The approximate value of the ratio between direct tensile strength and flexural strength is_____________?
(A) 0.33
(B) 0.5
(C) 0.75
(D) 1.0
The relation between modulus of rupturefcr and characteristic strength of concrete fck is given by_______________?
(A) fcr=0.35Vf7
(B) fcr=0.57f7
(C) fcr=0.7Vf7
(D) fcr=1.2Vf7 where fcr and fck are in N/mm2′
Increase in the moisture content in concrete_________________?
(A) reduces the strength
(B) increases the strength
(C) does not change the strength
(D) all of the above