Volume 4, Issue 1 (1-2017)                   WJEPAS 2017, 4(1): 1-13 | Back to browse issues page

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Aoual-Benslafa F K, Ameur M. Influence of composition parameters on the tunnel lining concrete made with dredged sandy sediments subjected to high temperatures. WJEPAS. 2017; 4 (1) :1-13
URL: http://wjepas.europeansp.org/article-15-139-en.html
Laboratory LABMAT, ENP Oran; BP 1523 Oran El Menaouer 31000 Oran, Algeria.
Abstract:   (500 Views)
The objective of this experimental work is to investigate the fire performance of different concretes. Four concretes were made, an ordinary concrete named C1 with quarry aggregates and three concretes named C2, C3 and C4, with quarry aggregates and dredged sediments. C3 concrete contains silica fume and for C4 concrete silica fume and polypropylene fibres was added. Physical properties as weight loss, porosity and UCS resistance were determined under normal conditions at a temperature of 20°C and after heating at temperatures of 150°C, 350°C and 600°C. Mechanical tests after cooling operations were performed on samples to obtain residual UCS values. Results show that C3 concrete develops the highest UCS value at a temperature of 20°C. The weight loss increase for all the concretes that are heated is observed. C3 concrete reveals a minimal porosity value at all the temperatures tested. C3 concrete cooled in air has a peak strength at 350°C that is more pronounced than the other concretes. The effects of high temperature on concretes residual UCS are more observed when the concrete is subjected to a thermal shock in water than when cooled in air.
Full-Text [PDF 447 kb]   (127 Downloads)    
Type of Study: Research |
Received: 2019/08/8 | Accepted: 2019/08/8 | Published: 2019/08/8

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