Aim of the study is to analysis the properties of concrete with adding fly ash. so using this waste in road construction can dispose this waste and also beneficial in minimize pollution in environment due to this waste. It saves the cement requirement for the same strength thus saving of raw material. In present study aims preparing concrete by replacement of Ordinary Portland Cement (OPC) with fly ash . A comparison is made between fly ash and cement properties which are used as sub-grade, base in Highway construction.