Development of a controlled low strength material (CLSM) from waste glass powder activated by alkaline for pavement engineering application

Abstract

Thailand population in 2020 have 69.8 million people. In the past decade, the increase of 2.6 million people cause to more resources use and waste, resulting in 2020 amount of waste 25.37 million tons but only 8.36 million tons are recycled. This paper has concept to use the waste from industrial processes as raw materials. This study was conducted to determine the control low strength materials (CLSM) mixtures produced from fly ash (FA) and bottom ash (BA) collected from the Mae Moh power plant, waste glass powder (WGP) from beer bottles recycled concrete aggregate (RCA) from demolition and alkaline activator chosen is sodium hydroxide (NaOH). The mixture sodium hydroxide solution of 10 molar, the ratio of BA or RCA to the binder of 1.5 and the ratio of WGP to the binder of 0, 20, 30 and 40 and the ratio of sodium hydroxide solution to binder 0.015 in determining the properties of control low strength materials refer to document ACI229R-99 and construction structure subbase of the Department of Highways of Thailand. Experimental outcomes on fresh and hardened properties composed of slum test, slum flow test, setting time and unconfine compressive strength (UCS). Finally, in this research, the optimal wages of control low strength materials are presented for use as pavement materials.