Effect of fly ash content on mechanical properties of unburnt concrete bricks

Abstract

ABSTRACT

This paper presents a study on the influence of fly ash content on the mechanical properties of unburnt concrete bricks. The composition includes: binder, aggregate and water, in which the binder consists of cement and fly ash. The fly ash content used to replace cement in the study was 0%, 10%, 20%, 30% and 40%, respectively. Test results on porosity, compressive strength, water permeability and water absorption of bricks are evaluated according to TCVN 6477:2016. The cost of brick production materials is significantly reduced when replacing 20% to 30% of cement with fly ash in the binder component.

Keywords: Unburnt bric; fly ash, binder.