Experimental Study and Application of Fly Ash Cement Stabilized Crushed Stone Soil Base

The fly ash cement stabilized macadam soil is used as pavement base material in NO.1synthetic slag disposal pit's earth and rockfill dam crest in Ningdong Energy and Chemical Base to replace the cement stabilized macadam.To reveal the mechanical properties of fly ash cement stabilized macedam soil and improve its efficient application in road engineering,the unconfined compressive strength of 8samples were tested with of different ratio for fly ash and cement.The results show that the strength of fly ash cement stabilized macedam soil can reach the base bearing requirements of NO.1synthetic slag disposal pit's earth and rockfill dam crest.The experiment pave are constructed with the ratio determined by test.The field sampling show that the 7dunconfined compressive strengthot the fly ash cement stabilized macadam soil is 4.8MPa.This meet the requirements of strength design.This study indicates that the fly ash cement stabilized macadam soil is suitable for road pavement project and provides a new idea for the recycling of fly ash.