A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than
a) 10 %
b) 15 %
c) 20 %
d) 25 %
A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than
a) 10 %
b) 15 %
c) 20 %
d) 25 %