American Journal of Civil Engineering and Architecture
ISSN (Print): 2328-398X ISSN (Online): 2328-3998 Website: Editor-in-chief: Dr. Mohammad Arif Kamal
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American Journal of Civil Engineering and Architecture. 2016, 4(1), 28-31
DOI: 10.12691/ajcea-4-1-4
Open AccessArticle

Comparative Elemental Analysis of Rice Husk Ash Calcined at Different Temperatures Using X-ray Flourescence (XRF) Technique

Taku J. K1, , Amartey Y. D2 and Kassar T1

1Department of Civil Engineering University of Agriculture, Makurdi, Nigeria

2Department of Civil Engineering Ahmadu Bello University, Zaria, Nigeria

Pub. Date: January 15, 2016

Cite this paper:
Taku J. K, Amartey Y. D and Kassar T. Comparative Elemental Analysis of Rice Husk Ash Calcined at Different Temperatures Using X-ray Flourescence (XRF) Technique. American Journal of Civil Engineering and Architecture. 2016; 4(1):28-31. doi: 10.12691/ajcea-4-1-4


In this study, the effect of the calcination temperature of rice husk on the pozzolanic properties of the resulting rice husk ash (RHA) especially its silica content was investigated. Rice husk was collected from a rice milling plant and washed to remove sand and other impurities, beneficiated using the water beneficiation method and calcined at temperatures of 400, 500, 600, 700and 800°C, respectively for three hours. Samples were taken for XRF analysis, setting time determination and specific gravity test. The result of XRF analysis revealed that RHA calcined at temperatures between 400°C and 800°C contains more than 70% silica as stipulated by ASTM C618 for pozzolanas. The silica content though varies slightly with different calcination temperature of the rice husk ash. Also, calcination removed impurities present in the rice husk. Besides that, the specific gravity of RHA decreases with increasing calcination temperature from 2.00 at 400°C to 1.05 at 800°C. Setting times of RHA mortars at 15% replacement of OPC with RHA shows no definite pattern with increasing temperature. However, the initial and final setting times of OPC-RHA mortars at all calcination temperatures were higher than that of OPC mortar. As a whole, calcination improves the silica content of rice husk ash for use as a pozzolana as well as removes mineral impurities that may affect the pozzolanic properties of the rice husk ash.

rice husk ash calcination temperature oxide composition setting time specific gravity

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[1]  Salas, A., Ospina, M. A., Delvasto, S., Majia De Gutierrez, R.: “Study on the pozzolanic properties of silica obtained from rice husk by chemical and thermal processes”. IPSS, 2007; 4(11): 4311-4318.
[2]  Adylov G, Faiziev SH, Paizullakuhanon M, Mukhsimov S, Nodirmatov, E.: “Silicon Carbide materials obtained from rice husk”. Tech. Phys. Lett. 2003; 29(3): 221-223.
[3]  Chandressekhar, S.: “Effect of organic acid treatment on the properties of rice husk silica”. Journal of Material Science, 2005; 40(24): 6535-6544.
[4]  Reddy, D. V., Alvarez, M.: “Marine durability characteristics of rice husk ash modified reinforced concrete”. 4th Latin American and Caribbean conference for Engineering and Technology. LACCET, 2006.
[5]  Goyal, A; Kunio, H; Ogata, H; Garg, M; Anwar, A. M; Asharf, M and Mandula: “Synergy effect of wheat straw ash on strength properties of mortal”. Journal of Applied Science, 2007; 7: 3256-3261.
[6]  Habeeeb, G, Hilmi Bin Mahmud: “Study on properties of RHA and its use as cement replacement material.”Materials Research Journal, 2010; 13(2): 185-190.
[7]  Kamal, N.L.M, Nuruddin, M.F, Shafiq, N.: “The influence of burning temperatures and percentage inclusion of microwave incinerated RHA on normal strength concrete”, ICCBT 2008 - A-(47): 531-538.
[8]  Nehdi, M., Dequette, J., El Damatty, A.: “Performance of rice husk ash produced using a new technology as a mineral admixture in concrete”. Cement and Concrete Research Journal, 2003; 33(8): 1203-1210.
[9]  Omotola, K. M; Onoja, A. D: “Elemental Analysis of rice husk ash using X- ray fluorescence technique”, International Journal of Physical Sciences, 2009; 4(4): 189-193.
[10]  Oyetola, E. B., Abdullahi, M.: “The use of rice husk ash in low cost sandcrete blocks production. Leonardo Electronic Journal of practices and Technology, 2006; 8: 58-70.
[11]  Rasheed, A. H; Molla, A. K; Ahmed, T. U.: “Long term effect of rice husk ash on strength of mortar”, World Academy of Science, Engineering and technology, 2010; 67: 740-743.
[12]  Salas, A; Delvasto, S; Gutierrez, R. M; Lang, D.: “Comparism of two processes for treating rice husk ash for use in high performance concrete”, Cement and Concrete Research, 2009; 39: 773-778.
[13]  Bandara, D. H. M.: “Development of blended cement utilizing the pozzolanic amorphous silica component of rice husk ash”. Journal of National Science, Sri Lanka, 1994; 22(2): 189-199.
[14]  Dakroury, A. E.,Gasser, M. S.: “Rice husk ash as cement admixture for immobilization of liquid radioactive waste at different temperatures”. Journal of nuclear Materials, (2008; 381(3): 271-277.
[15]  BS-EN 196-3: Determination of setting time and soundness, British Standard Institute, (BSI) London. 1995
[16]  BS 4550-3. Method of testing cement- physical tests, British Standard Institute, (BSI) London. 1978.