relation: https://khub.utp.edu.my/scholars/5357/
title: Properties of rice husk Ash (RHA and MIRHA) mortars
creator: Potty, N.S.
creator: Vallyutham, K.
creator: Yusoff, M.F.
creator: Anwar, A.
creator: Haron, M.F.
creator: Alias, M.N.
description: Rice husk Ash (produced by traditional burning called RHA and by using microwave incinerator called MIRHA) has shown promise as a cement replacement material. This study investigated the properties of RHA and MIRHA mortar used for brick manufacture at binder sand proportions of 1:3 and 1:4. RHA and MIRHA were intermediate in particle size to cement and sand particles. Percentages of replacement were 5, 10, 15, 20, 25 and 30, respectively. Strength at w/c ratios (0.5, 0.55, 0.6 and 0.65, respectively) was investigated to identify optimum w/c ratios as well as optimum percent replacement of RHA and MIRHA. Variations of IRS, density and water absorption were investigated. Generally 1:3 RHA and 1:3 MIRHA mortars strength showed decreasing trend with increasing percentage replacement with RHA and MIRHA. Whereas 1:4 RHA and 1:4 MIRHA mortars showed increase in strength at 5 replacement and decrease thereafter. IRS values for RHA mortars are generally within limits (0.25-1.5 kg/m2.min) recommended. Water absorption values of RHA mortars are generally higher than control mortar. IRS values for MIRHA mortars with w/c 0.5 and 0.55 ranged between 1.4-2.0 kg/m2.min; indicating the need for wetting the bricks before use. IRS values for 1:3 MIRHA mortars with w/c 0.6 and 0.65 were below 1.0 kg/m2.min indicating low suction values. For 1:4 MIRHA mortars, IRS values were very low in all cases. Water absorption values of MIRHA mortars are generally higher than the control mortar. MIRHA mortars with w/c 0.6 and 0.65 showed low percentages of water absorption. © Maxwell Scientific Organization, 2014.
publisher: Maxwell Science Publications
date: 2014
type: Article
type: PeerReviewed
identifier:   Potty, N.S. and Vallyutham, K. and Yusoff, M.F. and Anwar, A. and Haron, M.F. and Alias, M.N.  (2014) Properties of rice husk Ash (RHA and MIRHA) mortars.  Research Journal of Applied Sciences, Engineering and Technology, 7 (18).  pp. 3872-3882.  ISSN 20407459     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901451884&doi=10.19026%2frjaset.7.745&partnerID=40&md5=5ce574bbee0ff9d30b9c58e0acc229b0
relation: 10.19026/rjaset.7.745
identifier: 10.19026/rjaset.7.745