High-strength rice husk ash concrete incorporating quarry dust fine aggregates

S. N. Raman, T. Ngo, P. Mendis, H. B. Mahmud, C. H. Lee, T. T. Nguyen

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther


An experimental investigation was undertaken to evaluate the mechanical properties of highstrength concrete (HSC) when sand was partially replaced with quarry dust as fine aggregates. Rice husk ash (RHA) was used as cement replacement in the HSC mixes, produced with water-binder ratio of 0.38 to achieve 60MPa at 28 days. During the trial mixes stage, sand was substituted with quarry dust from 10% to 40% in the HSC containing 10% RHA. The mix containing 20% quarry dust was chosen as the optimum to undergo further evaluation of their mechanical properties. Compressive strength, modulus of rupture, dynamic modulus of elasticity and ultrasonic pulse velocity were evaluated up to 1 year, whereas the initial surface absorption was measured on the 28th and 56th day. While the substitution of sand with quarry dust in the HSC mixes does contribute to some minor negative effects in mechanical properties, these outcomes can be compensated with cement replacement materials such as RHA, and coupled with a good mix design.

Original languageEnglish
Title of host publicationIncorporating Sustainable Practice in Mechanics of Structures and Materials - Proceedings of the 21st Australian Conference on the Mechanics of Structures and Materials
Number of pages6
Publication statusPublished - 2011
Externally publishedYes
EventAustralasian Conference on the Mechanics of Structures and Materials 2010 - Melbourne, Australia
Duration: 7 Dec 201010 Dec 2010
Conference number: 21st


ConferenceAustralasian Conference on the Mechanics of Structures and Materials 2010
Abbreviated titleACMSM 2010

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