Effect of Aggregate on the Fire Resistance of Concrete
A variety of aggregates is used for concrete production. This article provides the analysis of the most frequent types of concrete aggregates, which are: gravel, dolomite, granite, and expanded clay. The fire alters the main feature of concrete – to resist compressive strength. When concrete is heated, both physical and chemical processes take place, and their negative results depend on the temperature level, speed of change and exposure duration, moisture content in concrete, its composition and structure, aggregates and characteristics of the contact area, production technology of structures, its size, shape of the cross section, load type, etc. The research of the analysis involved one-sided heating and volumetric heating according to the standard fire curve. Temperature measurements were carried out in different layers of concrete. The ultrasonic change in concrete specimens with different aggregates was measured too. Compressive strength decrease after heating is determined.
Copyright © 2014 Praise Worthy Prize - All rights reserved.
G. Skripkiūnas, Construction conglomerate structure and properties (1 rd edition, Kaunas Technology University, 2007).
V. Jocius, G. Skripkiūnas, D. Lipinskas, Cement Type Influence on Fire Resistance of Concrete, (2013) International Review of Civil Engineering (IRECE), 4 (4), pp. 162-167.
K.D. Hertz, Limits of spalling of firežexposed concrete, Fire Safety Journal, Vol. 38, pp. 103-116, 2003.
K.D. Hertz, L.S. Sorensen, Test method for spalling of fire exposed concrete, Fire Safety Journal, Vol. 40, pp. 466-476, 2005.
P. Kumar Mehta, Paulo J. M. Monteiro, Concrete Microstructure Properties, and Materials (3 rd edition, Department of Civil and Enviromental Engineering University of California at Berkeley, 2006)
D. Gawin, F. Pesavento, B.A. Schrefler, Towards prediction of the thermal spalling risk through a multi-phase porous media model of concrete, Compuer Methods in Applied Mechanics and Enginearing, Vol. 195 pp. 5707–5729, 2006.
Y. Anderberg, Spalling phenomena of HPC and OC, Proceedings of the International workshop on fire performance of high-strength concrete, NIST, Gaithesburg, USA, 1997.
L.T. Phan, J.N. Carino, Review of Mechanical Properties of HSC at Elevated Temperature, Journal of Materials in Civil Engineering, Americal Society of Civil Engineering, Vol. 10, No. 1, pp. 58-64,1998.
L.T. Phan, J.N. Carino, Mechanical Properties of High-Strength Concrete at Elevated Temperatures, NISTIR 6726, Nacional Institute of standarts ant Technology, Washington, D.C., 2001.
J.G. Mindeguia, P. Pimienta, A. Noumowé, M. Kanema, Temperature, pore pressure and mass variation of concrete subjected to high temperature — Experimental and numerical discussion on spalling risk, Cement and Concrete Research, Vol. 40, pp. 477– 487, 2010.
V.K.R. Kodur, L. Phan, Critical factors governing the fire performance of high strength concrete systems, Fire Safety Journal 42, pp/ 482-488, 2007.
O. Arioz, Effects of elevated temperatures on properties of concrete, Fire Safety Journal, Vol. 42, pp. 516-522, 2007.
A. Savva, P. Manita, K.K. Sideris, Influence of elevated temperatures on the mechanical properties of blended cement concretes prepared with limestone and siliceous aggregates, Cement & Concrete Composites 27, pp 239-248, 2005
LST EN 1363-1:2000 Fire resistance tests – Part 1: General requirements, CEN, 2000, 42 p.
- There are currently no refbacks.
Please send any question about this web site to email@example.com
Copyright © 2005-2018 Praise Worthy Prize