Effect of Bentonite as Partial Replacement of Cement on Residual Properties of Concrete Exposed to Elevated Temperatures

Sardar Farhan Mushtaq, Ather Ali, Rao Arsalan Khushnood, Rana Faisal Tufail, Ali Majdi, Adnan Nawaz, Serdar Durdyev, Dumitru Doru Burduhos Nergis () and Jawad Ahmad ()
Additional contact information
Sardar Farhan Mushtaq: NUST Institute of Civil Engineering (NICE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan
Ather Ali: NUST Institute of Civil Engineering (NICE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan
Rao Arsalan Khushnood: NUST Institute of Civil Engineering (NICE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan
Rana Faisal Tufail: Department of Civil Engineering, COMSATS University Islamabad, Wah Campus, Wah 47040, Pakistan
Ali Majdi: Department of Building and Construction Techniques, Al-Mustaqbal University College, Hillah 51001, Iraq
Adnan Nawaz: Department of Civil Engineering, COMSATS University Islamabad, Wah Campus, Wah 47040, Pakistan
Serdar Durdyev: Department of Engineering and Architectural Studies, Ara Institute of Canterbury, 130 Madras Street, Christchurch 8011, New Zealand
Dumitru Doru Burduhos Nergis: Faculty of Materials Science and Engineering, Gheorghe Asachi Technical University of Iasi, 700050 Iasi, Romania
Jawad Ahmad: Department of Civil Engineering, Swedish College of Engineering, Wah Cantt, Wah 47040, Pakistan

Sustainability, 2022, vol. 14, issue 18, 1-17

Abstract: This study investigated the effect of elevated temperature on the mechanical, physical and durability properties of normal strength concrete, modified with bentonite. The bentonite concrete was cast by substituting cement with bentonite content in proportions of 5, 10 and 15% by weight. Mechanical tests were conducted (compressive and splitting tensile strength). Furthermore, durability performance (mass loss and sorptivity) and specimen properties (elastic modulus, stress–strain behaviour, ductility and energy absorption) were evaluated and discussed. The results demonstrated that samples incorporating bentonite showed better fire endurance than the control mix. The inclusion of bentonite in concrete decreased the mass loss of the specimens exposed to high temperatures. The performance of bentonite concrete was better in terms of mechanical behaviour (compressive and tensile strength) than that of conventional concrete, and it had high resistance to water absorption. Higher ductility and energy absorption capacity were observed for the concrete specimen containing bentonite than its counterpart control specimens.

Keywords: bentonite; concrete; compressive strength; ductility; sorptivity; mass loss (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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