Effect of Rice Husk Ash (RHA) on Physical Property and Mechanical Strength of Concrete

Abstract:

Fast depleting natural resources, huge consumption of energy, and environmental hazards involved in the production of cement has inspired researchers to find partial replacement of cement using other or similar materials. Rice husk ash (RHA), an agricultural waste, is classified as “a highly active pozzolan” because it contains a very high amount of amorphous silica and a large surface area. Rice husk is natural fiber that has the advantages of low density, low cost and biodegradable. In Malaysia paddy is grown locally especially in northern states of Peninsular Malaysia. Rice husk is a by-product of paddy being process into rice. These make it a natural candidate for cement replacement agent especially in Paddy producing countries. In this paper, RHA was introduced as the micro filler in concrete mixtures. The replacement of RHA which is lighter as compared to the Ordinary Portland Cement results in decreasing density of cement fiber composite and less permeable concrete.

• Periodical: Advanced Materials Research (Volume 1115)
• Pages: 150-155
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1115.150
• Online since: July 2015
• Authors: Maisarah Ali*, Mohd Syafiq Fadzil, Siti Asmahani Saad
• Keywords: Cement Replacement Material (CRM), Compressive Strength, Ordinary Portland Cement, Rice Husk Ash (RHA)

References

[1] Information on http: /www. fao. org/economic/est/publications/ricepublications/rice-market-monitor-rmm/en.

[2] E. C. Beagle: Rice Husk Conversion to Energy, FAO Agric. Serv. Bull., Vol. 31 (1978).

[3] E. El-Fadaly, I.M. Bakr and M.R.A. Breka:, Journal of American Science, Vol. 6 (2010), pp.241-247.

[4] G.A.R. Rao, R.K. Sastry and P.K. Rohatgi: Bull. Mater. Sci., Vol 12 (1989), pp.469-479.

[5] K.O. Kjellsen and S. Diamond: The Development of Microstructure of Portland Cement Mortars – from the Fresh to the Hardened State, (36th Conference on Our World in Concrete & Structures, Singapore, 2011).

[6] F. Benboudjema, E. Guillon and J.M. Torrenti: Effect of Interfacial Transition Zone and Aggregates on the Time Dependent Behavior of Mortar and Concrete, (2012).

[7] M. Qamruddin and L.G. Kalurkar:, International Journal of Civil Engineering and Technology, Vol. 4 (2013), pp.240-245.

[8] A.E. Abalaka and O.G. Okoli:, Construction Science, Vlo. 14 (2013), pp.4-12.

[9] K. Kartini, H.B. Mahmud and M.S. Hamidah: Strength Properties of Grade 30 Rice Husk Ash Concrete, (31st Conference on Our World in Concrete and Structures, Singapore 2006).

[10] BS 812-103. 2, Testing Aggregates. Method for Determination of Particle Size Distribution, Sedimentation Test (1989).