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Structural Engineering and Mechanics Volume 74, Number 5, June10 2020 , pages 671-678 DOI: https://doi.org/10.12989/sem.2020.74.5.671 |
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Glass powder admixture effect on the dynamic properties of concrete,multi-excitation method |
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Abdenour Kadik, Djilali Boutchicha, Abderrahim Bali and Messaouda Cherrak
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| Abstract | ||
| In this work, the dynamic properties of a high performance concrete containing glass powder (GP) was studied. The GP is a new cementitious material obtained by recycling waste glass presenting pozzolanic activity. This eco-friendly material was incorporated in concrete mixes by replacing 20 and 30% of cement. The mechanical properties of building materials highly affect the response of the structure under dynamic actions. First, the resonant vibration frequencies were measured on concrete plate with free boundary conditions after 14, 28 and 90 curing days by using an alternative vibration monitoring technique. This technique measures the average frequencies of several excitations done at different points of the plate. This approach takes into account the heterogeneity of a material like concrete. So, the results should be more precise and reliable. For measuring the bending and torsion resonant frequencies, as well as the damping ratio. The dynamic properties of material such as dynamic elastic modulus and dynamic shear modulus were determined by modelling the plate on the finite element software ANSYS. Also, the instantaneous aroused frequency method and ultrasound method were used to determine the dynamic elastic modulus for comparison purpose, with the results obtained from vibration monitoring technique. | ||
| Key Words | ||
| glass powder; high performance concrete; vibration; resonant frequencies; dynamic properties | ||
| Address | ||
| Abdenour Kadik, Djilali Boutchicha: 1Laboratory of Applied Mechanic (LMA), University of Science and Technology of Oran, El Mnaouar, BP 1505, Bir El Djir 31000, Oran, Algeria. Abdenour Kadik, Abderrahim Bali, Messaouda Cherrak: Laboratory of civil engineering and environment material (LMGCE), Polytechnic School of Algeria – 10 rue Frères Oudek, El-Harrach 16200, Algiers, Algeria | ||