Study on properties of rice husk ash and its use as cement replacement material
This paper investigates the properties of rice husk ash (RHA) produced by using a ferro-cement furnace. The effect of grinding on the particle size and the surface area was first investigated, then the XRD analysis was conducted to verify the presence of amorphous silica in the ash. Furthermore, the...
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| Format: | Article |
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2010
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| author | Habeeb, G.A. Bin Mahmud, H. |
| author_facet | Habeeb, G.A. Bin Mahmud, H. |
| author_sort | Habeeb, G.A. |
| collection | UM |
| description | This paper investigates the properties of rice husk ash (RHA) produced by using a ferro-cement furnace. The effect of grinding on the particle size and the surface area was first investigated, then the XRD analysis was conducted to verify the presence of amorphous silica in the ash. Furthermore, the effect of RHA average particle size and percentage on concrete workability, fresh density, superplasticizer (SP) content and the compressive strength were also investigated. Although grinding RHA would reduce its average particle size (APS), it was not the main factor controlling the surface area and it is thus resulted from RHA's multilayered, angular and microporous surface. Incorporation of RHA in concrete increased water demand. RHA concrete gave excellent improvement in strength for 10% replacement (30.8% increment compared to the control mix), and up to 20% of cement could be valuably replaced with RHA without adversely affecting the strength. Increasing RHA fineness enhanced the strength of blended concrete compared to coarser RHA and control OPC mixtures. |
| first_indexed | 2024-03-06T05:37:40Z |
| format | Article |
| id | um.eprints-14944 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:37:40Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | um.eprints-149442015-12-01T00:34:41Z http://eprints.um.edu.my/14944/ Study on properties of rice husk ash and its use as cement replacement material Habeeb, G.A. Bin Mahmud, H. Q Science (General) This paper investigates the properties of rice husk ash (RHA) produced by using a ferro-cement furnace. The effect of grinding on the particle size and the surface area was first investigated, then the XRD analysis was conducted to verify the presence of amorphous silica in the ash. Furthermore, the effect of RHA average particle size and percentage on concrete workability, fresh density, superplasticizer (SP) content and the compressive strength were also investigated. Although grinding RHA would reduce its average particle size (APS), it was not the main factor controlling the surface area and it is thus resulted from RHA's multilayered, angular and microporous surface. Incorporation of RHA in concrete increased water demand. RHA concrete gave excellent improvement in strength for 10% replacement (30.8% increment compared to the control mix), and up to 20% of cement could be valuably replaced with RHA without adversely affecting the strength. Increasing RHA fineness enhanced the strength of blended concrete compared to coarser RHA and control OPC mixtures. 2010 Article PeerReviewed Habeeb, G.A. and Bin Mahmud, H. (2010) Study on properties of rice husk ash and its use as cement replacement material. Materials Research-Ibero-American Journal of Materials, 13 (2). pp. 185-190. |
| spellingShingle | Q Science (General) Habeeb, G.A. Bin Mahmud, H. Study on properties of rice husk ash and its use as cement replacement material |
| title | Study on properties of rice husk ash and its use as cement replacement material |
| title_full | Study on properties of rice husk ash and its use as cement replacement material |
| title_fullStr | Study on properties of rice husk ash and its use as cement replacement material |
| title_full_unstemmed | Study on properties of rice husk ash and its use as cement replacement material |
| title_short | Study on properties of rice husk ash and its use as cement replacement material |
| title_sort | study on properties of rice husk ash and its use as cement replacement material |
| topic | Q Science (General) |
| work_keys_str_mv | AT habeebga studyonpropertiesofricehuskashanditsuseascementreplacementmaterial AT binmahmudh studyonpropertiesofricehuskashanditsuseascementreplacementmaterial |