@article{scholars5357,
            note = {cited By 4},
          volume = {7},
          number = {18},
             doi = {10.19026/rjaset.7.745},
           title = {Properties of rice husk Ash (RHA and MIRHA) mortars},
            year = {2014},
         journal = {Research Journal of Applied Sciences, Engineering and Technology},
       publisher = {Maxwell Science Publications},
           pages = {3872--3882},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901451884&doi=10.19026\%2frjaset.7.745&partnerID=40&md5=5ce574bbee0ff9d30b9c58e0acc229b0},
        abstract = {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. {\^A}{\copyright} Maxwell Scientific Organization, 2014.},
          author = {Potty, N. S. and Vallyutham, K. and Yusoff, M. F. and Anwar, A. and Haron, M. F. and Alias, M. N.},
            issn = {20407459}
}