Journal Published Online: 10 June 2019
Volume 49, Issue 2

Strength, Elastic Modulus, and Creep of High-Strength Concrete Produced with Bagasse Ash and Recycled Concrete Aggregate

CODEN: JTEVAB

Abstract

In this study, the mechanical properties of a high-strength recycled concrete (HS-RC) incorporating ground bagasse ash (GBA) were evaluated. Recycled coarse aggregate (R-CA) from concrete demolition was used as a full replacement for natural coarse aggregate (N-CA). The GBA was used to partially substitute 20–50 wt. % of the ordinary portland cement cementitious material. The results indicated that the replacement of N-CA by R-CA led to a slight reduction in the compressive strength of the concrete compared with that of conventional high-strength (CT) concrete. However, the R-CA had a clear negative impact on the elastic modulus and creep strain of the HS-RC. The HS-RC mixtures prepared with 20 wt. % GBA had a higher compressive strength than the CT concrete at later ages (90 days or more). Likewise, the GBA slightly reduced the creep strain, whereas the HS-RC with and without GBA had an approximately 20 % lower elastic modulus than the CT concrete. In addition, the creep strain of concretes containing R-CA and GBA was related to their modulus of elasticity and compressive strength, which could be calculated by a proposed equation and were compared with the results from the predicted model given by ACI 209.2R-08, Guide for Modeling and Calculating Shrinkage and Creep in Hardened Concrete.

Author Information

Rattanachu, Pokpong
Department of Civil Engineering, Faculty of Engineering, Princess of Naradhiwas University, Narathiwat, Thailand
Tangchirapat, Weerachart
Department of Civil Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
Jaturapitakkul, Chai
Department of Civil Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
Chindaprasirt, Prinya
Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand Academy of Science, The Royal Society of Thailand, Bangkok, Thailand
Pages: 16
Price: $25.00
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Stock #: JTE20180427
ISSN: 0090-3973
DOI: 10.1520/JTE20180427