Compressive Strength and Microstructure Analysis of Treated Rice Husk Ash (TRHA) Incorporated Mortar

 
 
 
  • Abstract
  • Keywords
  • References
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  • Abstract


    High amount of reactive silica is ubiquitous in pozzolanic reaction for concrete strength increment. Rice husk ash (RHA) is proven contains high content of amorphous silica that is essential in the pozzolanic reaction of effective additive in concrete. Nevertheless, incorporation of RHA as cement replacement material (CRM) or additive is very minimal in current concrete industry. Therefore, improvement on the RHA properties by introduction of thermal and chemical pretreatment prior to incineration process is considered as a promising way in order to achieve the goal. This treatment process has been reported widely in literature. In this paper, the effect of treated rice husk ash (TRHA) and non-treated rice husk ash (NTRHA) incorporated mortar in terms of its compressive strength and microstructure properties are examine subsequently. The strength activity of TRHA from the optimum treatment process was measured by testing the compressive strength of mortars. The highest compression value obtained was 50.73MPa with 3% UFTRHA replacement at 28 days. At a longer curing period i.e. 90 days, it was recorded that 3% of UFTRHA mortar had the highest compression value at 53.87MPa. As for microstructure properties, a denser microstructure with excellent aggregate bonding and cement matrix in the interfacial transition zone (ITZ) was observed.


  • Keywords


    Compressive strength; microstructure properties; physicochemical properties of rice husk ash (RHA); cement replacement material (CRM); Treated Rice Husk Ash (TRHA); Non-Treated Rice Husk Ash (NTRHA); high energy milling.

  • References


      [1] Neville AM (2012), Properties of Concrete, 5th Edition, Prentice Hall Pearson, pp. 745-750.

      [2] Feng Q, Yamamichi H, Shoya M & Sugita S (2004), Study on the pozzolanic properties of rice husk ash by hydrochloric acid pretreatment, Cem. Concr. Res., vol. 34, no. 3, pp. 521–526.

      [3] Salas A, Delvastro S, Gutierrez RMD, & Lange D (2009), Comparison of two processes for treating rice husk ash for use in high performance concrete, Cem. Concr. Res., vol. 39, no. 9, pp. 773–778.

      [4] Van Tuan N, Ye G, Van Breugel K & Copuroglu O (2011), Hydration and microstructure of ultra high performance concrete incorporating rice husk ash, Cem. Concr. Res., vol. 41, no. 11, pp. 1104–1111.

      [5] Food and Agriculture Organization, Rice Market Monitor April 2015 (2015), available online: http://www.fao.org/fileadmin/templates/est/COMM_MARKETS_MONITORING/Rice/Images/RMM/RMM_APR15.pdf, last visit: 10 July 2018.

      [6] Fadhil M, Saad SA, Shafiq N & Ali M (2016), The effect of incineration temperature to the chemical and physical properties of ultrafine treated rice husk ash (UFTRHA) as supplementary cementing material (SCM), 4th International Conference on Process Engineering and Advanced Material, Proceedia Engineering, vol 148, pp. 163-167.

      [7] Park C, Salas A, Chung CW & Lee CJ (2014), Freeze-thaw resistance of concrete using acid-leached rice husk ash, KSCE Journal of Civil Engineering, vol. 18, no.4, pp. 1133-1139.

      [8] Vayghan AG, Khaloo AR & Rajibipour F (2013), The effect of a hydrochloric acid pre-treatment on the physicochemical properties and pozzolanic performance of rice husk ash,” Cem. Concr. Compos., vol. 39, pp. 131–140.

      [9] Nuruddin MF, Saad SA, Shafiq N & Ali M (2016), Effect of pretreatment soaking duration to characteristic of ultrafine treated rice husk ash (UFTRHA) as supplementary cementing material (SCM), ARPN J. Eng. Appl. Sci., vol. 11, no. 12, pp. 7596–7600.

      [10] BSI (1978), BS 4550:Part 6 Method of Testing Cement. Standard Sand for Mortar Cubes, British Institute, London.

      [11] Kishore R, Bhikshma V & Jeevana Prakash P (2011), Study on strength characteristics of high strength Rice Husk Ash concrete, Procedia Eng., vol. 14, pp. 2666–2672.


 

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Article ID: 22768
 
DOI: 10.14419/ijet.v7i4.35.22768




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