Influence of porosity on the tensile strength of fine grained mortar containing fly ash, palm oil fuel ash and rice husk ash

Zalipah Jamellodin, Hamidah Mohd Saman, Azmi Ibrahim, Suraya Hani Adnan, Nur Hafizah Abd Khalid
2019 IOP Conference Series: Materials Science and Engineering  
The study is to identify the influence of porosity on the tensile strength of fine grained mortar containing fly ash (FA), palm oil fuel ash (POFA) and rice husk ash (RHA). The aim of this study is to reduce the consumption of cement due to its negative impact on the environment. The cement-to-sand ratio used in the mix design of fine grained mortar is 1: 2. The maximum size of fine grained sand used in this study is 0.6 mm. There are four (4) mix designs of fine grained mortar which include
more » ... trol mortar (100% OPC), 80% OPC + 20% FA, 90% OPC + 10% POFA and 80% OPC + 20% RHA. The selection of the mix design for each type of fine grained mortar was based on the mix designs of previous studies which produced the highest compressive strength. The tensile strength test and the porosity test were carried out in this study. The tensile strength test was performed on cylinder specimens measuring 100 mm diameter and 200 mm height according to ASTM C496. On the other hand, the porosity test was conducted on prism specimens measuring 40 x 40 x 160 mm. The results showed that fine grained mortar containing FA achieved the highest tensile strength of 5.9 N/mm 2 and a low porosity of 12.7%.
doi:10.1088/1757-899x/513/1/012027 fatcat:yajklsfqrbebhpr6vbr2j43xee