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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 91
PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: B.H.V. Topping, L.F. Costa Neves and R.C. Barros
Paper 126
Modelling of Fibre Reinforced Concrete Based Materials under Static and Dynamic Loading A. Materna and J. Brozovský
Faculty of Civil Engineering, VSB-TU of Ostrava, Czech Republic , "Modelling of Fibre Reinforced Concrete Based Materials under Static and Dynamic Loading", in B.H.V. Topping, L.F. Costa Neves, R.C. Barros, (Editors), "Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 126, 2009. doi:10.4203/ccp.91.126
Keywords: fibre reinforced concrete, finite element modelling, material properties, dynamic analysis.
Summary
This paper discusses approaches to numerical modelling of protection
walls which are used in mining and underground structures. The
numerical modelling works to improve properties of these walls by use of fibre
reinforced concrete are presented.
Concrete with fibre reinforcement is still one of the materials that can be used in situations when plain concrete or traditionally reinforced concrete is not optimal. There are many ongoing research projects that study the properties of different types of fibre reinforced concrete and their fittness for different purposes. One of possible uses of fibre reinforced concrete is the construction of protection walls (anti-explosion walls) in underground structures. These objects are common namely in the mining industry. They are used mainly in cases of accident of different types. Their purpose is the prevention of explosions (by the prevention or slowing of methane spread inside underground structures) and also a protection against the effects of possible explosions. These types of structures usually have to be built in a very short time during accidents (or shortly before when the accident hazard is high) so it is often not possible to use classic reinforced concrete. They must be created from rapidly hardening mixtures and in most cases they have to be unreinforced. It is because of the practical imposibility of storing the usual steel reinforcement inside most underground structures and because of the limited possibility of fast transportation of members of this reinforcement to a place of use. The fibre reinforcement can be an ideal here, though there are also some technological aspects and possible difficulties. A design and construction of anti-explosion walls can benefit from the use of material with reinforcement because concrete-based materials (or other materials with similar behaviour) have limited mechanical properties in the case of explosions. For these reasons it can be assumed that use of fibre reinforcement can be very usefull both from a technological and mechanical points of view. purchase the full-text of this paper (price £20)
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