Effect of Rice Straw Ash (RSA) as partially replacement of cement toward fire resistance of self-compacting concrete
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Universiti Malaysia Perlis, Faculty of Civil Engineering Technology, 02100 Padang Besar, Perlis, Malaysia
Universiti Malaysia Perlis, Faculty of Chemical Engineering, 01000, Kangar, Perlis, Malaysia
Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, Czestochowa, Poland
Department of Physics, Czestochowa University of Technology, Czestochowa, Poland
UniversitiTeknologi MARA, School of Civil Engineering, College of Engineering, 40450 ShahAlam, Selangor, Malaysia
1 Department of Civil Engineering, College of Engineering, Universiti Malaysia Pahang, 26300 Gambang Kuantan Pahang, Malaysia
Faculty of Materials Science and Engineering, Gheorghe Asachi Technical University of Iasi, 71 D. Man-geron Blv., 700050 Iasi, Romania
Division of Materials Processing Technology and Computer Techniques in Materials Science, Silesian University of Technology, 44-100 Gliwice, Poland
Submission date: 2021-05-27
Final revision date: 2021-08-08
Acceptance date: 2021-08-08
Publication date: 2022-03-30
Archives of Civil Engineering 2022;68(1):353-363
Malaysia’s construction industry is experiencing rapid growth, translating into increased demand for cement. However, cement production pollutes the air to the detriment of the climate via CO2 emission, making research into a cementitious replacement in concrete a necessity. This paper details an experimental study of self-compacting concrete (SCC) with partial replacement of cement by rice straw ash (RSA), which is expected to result in environmental preservation due to the green materials being used in cement production. The physicomechanical properties of the SCC with RSA replacement were determined via its compressive strength, water absorption, self-workability, and fire resistance (residual strength after exposure to high temperatures). The proportion of RSA replacement used were 0%, 5%, 10%, 15%, 20%, and 25%, and all passed the slump flow test, except the 20% and 25% samples. The SCC samples with 15% of RSA replacement reported the highest compressive strength at 7 and 28 curing days and the highest residual strength post-exposure to high temperatures. The lowest percentage of water absorption was reported by the 15% of RSA replacement, with a density of 2370 kg/m3.
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