Title: MECHANICAL PROPERTIES OF HIGH STRENGTH CONCRETE CONTAINING RECYCLED CONCRETE AGGREGATE WITH GROUND BAGASSE ASH

Author(s): Rattanachucha, Veerachart Tangjirat, Chatchatapitpitakul

Publication: TCA

Volume: 4

Issue: 2

Appears on pages(s): 36-48

Keywords: bagasse ash, recycled concrete aggregates, high strength concrete, mechanical property

DOI:

Date: 6/1/2016

Abstract:
This research aims to utilize bagasse ash, a by-product acquired from burning bagasse for an electricity generation power plant in a sugar factory, as a binder to partially replace Portland cement. In addition, recycled concrete aggregate, which was obtained from crushing demolished concrete columns, were used as a substitute for crushed limestone in high strength concrete (HSC). The mechanical properties of concrete including compressive strength, modulus of elasticity, and splitting tensile strength were investigated. The results demonstrated that use of ground bagasse ash (GBA) as 20% by weight of binder to replace OPC could promote the compressive strength of the recycled aggregate concrete (RAC) to be higher than control concrete (CT) at later ages (60 days or more). In addition, all concretes exhibited compressive strengths higher than 55 MPa suggesting that they are high strength concrete. However, the use of recycled concrete aggregate as a full replacement for crushed limestone had negative impacts on the modulus of elasticity and splitting tensile strength of concrete, whereas GBA had a slightly positive effects on modulus of elasticity and splitting tensile strength of RAC.