Proportion of cement to fly-ash in cement-fly-ash stabilized crushed-stones pavement

In order to give the best proportion of cement to fly-ash for coustructing cement-fly-ash stabilized crushed-stones pavement,through varying the proportion of cement to fly-ash while maintaining aggregate percentage and gradation,the variation law of mixture strength index with age is studied by experiment.The results show that the cement percentage determines mixture's strength;the strength ratio value(R_(180)/R_(28)) can indicate the proportion's value;the special point of variation curve of R_(180)/R_(28) to cement/fly-ash indicate the best proportion of cement to fly-ash.7 tabs,2 figs,9 refs.