Strength development of concrete with rice-husk ash |
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| Affiliation: | 1. Sustainable Construction Materials and Building Systems (SUCOMBS) Research Group, Faculty of Engineering & Built Environment, University Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;2. Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh;3. Department of Civil Engineering, Infrastructure University Kuala Lumpur, Kajang-4300, Selangor, Malaysia;1. Faculty of Civil Engineering Technology, Universiti Malaysia Pahang, Kuantan 26300, Pahang, Malaysia;2. School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81300 Johor, Malaysia;1. Department of Civil Engineering, Thapar University, Patiala, Punjab, India;2. Department of Biotechnology, Thapar University, Patiala, Punjab, India;1. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;2. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;3. Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: | This paper presents a study on the development of compressive strength up to 91 days of concretes with rice-husk ash (RHA), in which residual RHA from a rice paddy milling industry in Uruguay and RHA produced by controlled incineration from the USA were used for comparison. Two different replacement percentages of cement by RHA, 10% and 20%, and three different water/cementicious material ratios (0.50, 0.40 and 0.32), were used. The results are compared with those of the concrete without RHA, with splitting tensile strength and air permeability. It is concluded that residual RHA provides a positive effect on the compressive strength at early ages, but the long term behavior of the concretes with RHA produced by controlled incineration was more significant. Results of splitting tensile and air permeability reveal the significance of the filler and pozzolanic effect for the concretes with residual RHA and RHA produced by controlled incineration. |
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