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

10th Asia Pacific Structural Engineering and Construction Conference 2018

工业技术（总论）

Jamellodin, Zalipah^1 ; Mohd Saman, Hamidah^2 ; Ibrahim, Azmi^2 ; Adnan, Suraya Hani^3 ; Hafizah Abd Khalid, Nur^4

Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Batu Pahat

86400, Malaysia^1

Faculty of Civil Engineering, UiTM Shah Alam, Selangor, Shah Alam

40450^2

Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Johor, Batu Pahat

86400^3

School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru

81310, Malaysia^4

关键词: Fine grained;    Fine-grained sand;    Impact on the environment;    Low porosity;    Mix designs;    Porosity tests;    Rice husk ash;    Sand ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/513/1/012027/pdf
DOI  :  10.1088/1757-899X/513/1/012027

学科分类：工业工程学

来源: IOP

【 摘 要 】

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 control 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/mm2 and a low porosity of 12.7%.