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Field investigation of high-volume fly ash pavement concrete
Affiliation:1. Civil Engineering, University of South Asia, Lahore, Pakistan;2. Civil and Environmental Engineering, Michigan State University, United States;3. Construction Engineering, Texas Tech University, United States;1. School of Civil Engineering, Hefei University of Technology, Anhui, China;2. School of Automobile and Transportation Engineering, Hefei University of Technology, Anhui, China;1. Department of Civil and Environmental Engineering, Universiti Teknologi Petronas, Bandar Seri Iskandar, Tronoh, Perak 31750, Malaysia;2. Department of Civil Engineering, Covenant University, Ota, Nigeria;3. Centre for Future Materials (CFM), School of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, QLD 4350, Australia;4. Civil Engineering Department, University of Garmian, Kalar, Kurdistan Region, Iraq;5. Department of Civil Engineering, Harran University, Sanlıurfa, Turkey;6. Department of Civil Engineering, Quaid-e-Awam University of Engineering, Science and Technology Campus Larkana, Pakistan;1. Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603 102, India;2. Homi Bhabha National Institute, Mumbai 600 094, India;3. Department of Civil Engineering, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, Tamil Nadu 600 048, India;1. Department of Computer Science and Engineering, School of Engineering (SOET), Jagran Lake City University, Bhopal 462044, M.P., India;2. Department of Computer Applications, The Bhopal School of Social Sciences (BSSS), Bhopal 462026, M.P., India
Abstract:Field investigation of high-volume fly ash (HVFA) concrete in pavement construction was carried out. Test results performed on cores drilled from pavement after 270 days of concrete age showed that use of HVFA results in production of pavement concrete with improvements in: strength; moisture barrier qualities; and abrasive resistance characteristics. These improvements are brought about by the pozzolanic reaction of fly ash with the hydrates of cement that favorably changes the microstructure and interfacial transition zone in the resulting concrete.Use of high volume of fly ash in pavement concrete as partial replacement for cement is estimated to produce major energy and environmental gains and is a practice that is aimed at producing durable and sustainable concrete-based infrastructure. The use of HVFA concrete can significantly economize the construction of concrete pavements and improve the service life of transportation infrastructure.
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