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