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Advances in Concrete Construction Volume 10, Number 5, November 2020 , pages 443-454 DOI: https://doi.org/10.12989/acc.2020.10.5.443 |
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Effect of glass powder on the behaviour of high performance concrete at elevated temperatures |
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Abdenour Kadik, Messaouda Cherrak, Abderrahim Bali, Djilali Boutchicha and Kinda Hannawi
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Abstract | ||
In recent years, many studies have been done on the performance of concrete containing glass powder (GP). For the purpose of widespread use of GP in concrete mixes, a knowledge of the performance of such a mixture after a fire is essential for the perspective of structural use. This research work was carried out to evaluate the performance of High Performance Concrete (HPC) made with GP after being exposed to elevated temperature. The studied mixtures include partial replacement of cement by GP with up to 30%. The mechanical performance and structural alterations were assessed after high temperature treatment from 200oC to 800oC. The mechanical performance was evaluated by testing the specimens to the compressive and tensile strength. In addition, the mass loss and the porosity were measured to notice the structural alterations. Changes in microstructure due to temperature was also investigated by the X-ray diffraction (XRD) and thermal gravimetric analyses (TGA) as well as porosity adsorption tests. The results of the concrete strength tests showed a slight difference in compressive strength and the same tensile strength performance when replacing a part of the cement by GP. However, after high temperature exposition, concrete with GP showed better performance than the reference concrete for temperature below 600oC. But, after heating at 800oC, the strength of the concrete with GP drop slightly more than reference concrete. This is accompanied by an important increase in mass loss and water porosity. After the microstructure analysis, no important changes happened differently for concrete with GP at high temperature except a new calcium silica form appears after the 800 | ||
Key Words | ||
glass powder; concrete; high temperature; mechanical properties; microstructural changes | ||
Address | ||
Abdenour Kadik: Laboratory of Civil Engineering and Environment Materials (LMGCE), Ecole Nationale Polytechnique, Algiers-10 rue Freres Oudek, El-Harrach 16200, Algiers, Algeria; Laboratory of Applied Mechanic (LMA), University of Science and Technology of Oran, El Mnaouar, BP 1505, Bir El Djir 31000, Oran, Algeria Messaouda Cherrak: Laboratory of Civil Engineering and Environment Materials (LMGCE), Ecole Nationale Polytechnique, Algiers-10 rue Freres Oudek, El-Harrach 16200, Algiers, Algeria Abderrahim Bali: Laboratory of Civil Engineering and Environment Materials (LMGCE), Ecole Nationale Polytechnique, Algiers-10 rue Freres Oudek, El-Harrach 16200, Algiers, Algeria Djilali Boutchicha: Laboratory of Applied Mechanic (LMA), University of Science and Technology of Oran, El Mnaouar, BP 1505, Bir El Djir 31000, Oran, Algeria Kinda Hannawi: Laboratory of Civil Engineering and Mechanical Engineering, National Institute of Applied Sciences, 35000 Rennes, France | ||
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