increase in water-cement ratio

increase in fineness of cement

decrease in curing time

decrease in size of aggregate

fcr=0.35Vf7

fcr=0.57f7

fcr=0.7Vf7

fcr=1.2Vf7

less

more

equal

none of the above

Ec == 5700

Ec == 570

Ec == 5700fck

Ec = where fck N/mm2 = 700 is the characteristic strength in

reduces the strength

increases the strength

does not change the strength

all of the above