By mixed stone powder with 16%

20% and 24% respectively

the influence of different stone powder content on fresh concrete

mechanical property and durability of RCC were studied.The results were compared to that of RCC with 11.5% stone powder.The research showed that value VC increased and air content decreased when the mixed stone powder content went up.Meanwhile

the interstice in RCC can be filled which resulted in higher volume weight and more compact concrete.While the stone content increased

the permeability coefficient went down.When the powder content exceeded 16%

permeability coefficient comes to a constant.The prime range of powder content is between 16%

2

0%

which leads to the higher compressive strength.While the content exceeded 20%

the compressive strength of RCC decreased with the powder conten

t increasing.