Mechanical Properties of Alkali-activated Fly Ash Concrete on Pavement Application

Abstract

This article presents the results of alkali-activated fly ash concrete samples collecting from the pavement site in truck scaling area, Mae Moh power plant, Lampang. The concrete was 50 m3 batch and the design strength was 280 ksc at 28 days. The Portland cement type 1 was used in this project only 60 kg/m3 in order to enhance the early strength for re-open the traffic quicker. Other materials used in concrete proportion were NaOH with 6M concentration and fly ash 380 kg/m3. The results revealed that the concrete exhibited 320 ksc compressive strength within 7 days and more than 400 ksc at 28 days. Moreover, other significant mechanical properties such as abrasion, water permeably, chloride permeability, and permeable voids were reported in this paper as well.