TY  - JOUR
VL  - 7
JF  - Research Journal of Applied Sciences, Engineering and Technology
A1  - Potty, N.S.
A1  - Vallyutham, K.
A1  - Yusoff, M.F.
A1  - Anwar, A.
A1  - Haron, M.F.
A1  - Alias, M.N.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901451884&doi=10.19026%2frjaset.7.745&partnerID=40&md5=5ce574bbee0ff9d30b9c58e0acc229b0
Y1  - 2014///
ID  - scholars5357
IS  - 18
N2  - 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.
EP  - 3882
PB  - Maxwell Science Publications
SN  - 20407459
TI  - Properties of rice husk Ash (RHA and MIRHA) mortars
SP  - 3872
N1  - cited By 4
AV  - none
ER  -