The effects of different mixed ratios and different times on compressive strength and water-sta bility of macadam with lime-fly ash were analyzed in laboratory

which have showed that the best ratio of mixing lime

fly ash and detritus is 6:12:82.In addition

a kind of solidifying admixture was added into macadam with lime-fly ash to modify the material

and the result has showed that it can further increase the compressive strength and improve the water-stability.Finally

we tested the compressive strength and the water-stability of consolidated macadam with lime-fly ash in 90 and 180 days age respectively

and con- cluded that the chemical reaction can be finished in 90 days

which provides a basis for wide application of the new solidifying admixture.