vol28no3pa7

TJES: Arif AH, Raoof SM, .Experimental Investigation on Bending Behavior of Textile Reinforced Concrete (TRC) Plates at High Temperatures. Tikrit Journal of Engineering Sciences 2021; 28(3):: 88- 102.

APA: Arif AH, Raoof SM, . (2021). Experimental Investigation on Bending Behavior of Textile Reinforced Concrete (TRC) Plates at High Temperatures. Tikrit Journal of Engineering Sciences, 28 (3), 88- 102.

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Tikrit Journal of Engineering Sciences (2021) 28(3) 88- 102.

Experimental Investigation on Bending Behavior of Textile Reinforced Concrete (TRC) Plates at High Temperatures

Assim H.. Arif *1 Saad M..Raoof 2

0 Department of Civil Engineering/College of Engineering/ Tikrit University/ Tikrit/ Iraq

1 PhD candidate, Department of Civil Engineering, University of Nottingham, Nottingham, NG7 2RD, United Kingdom, UK

* Corresponding author: asimciv@yahoo.com  

DOI: http://doi.org/10.25130/tjes.28.3.07

Abstract

Textile Reinforced Concrete (TRC) can be used as independent structural elements due to its high loading capacity and proper to product light weight and thin walled structural elements. In this study, the bending behavior of TRC plates that reinforced with dry carbon fiber textile and exposed to high temperatures was experimentally studied under 4-points bending loading. The examined parameters were; (a) number of textile fiber reinforcements layers 1, 2 and 3 layers; (b) level of high temperatures 20°C, 200°C, 300°C, and 400°C. Firstly, the mechanical properties of the cementitious matrix and the tensile properties of TRC coupons at each predefined temperature were evaluated. The results showed that the ultimate tensile stress of the TRC coupons did not affect up to 200°C, however, a significant reduction observed at 300°C and 400°C by 19% and 24% respectively. Regarding the compressive strength and flexural strength of the cementitious matrix, the degradation was not severe until 200°C, while it became critical at 400 °C (23% and 22% respectively). The result of the bending of TRC plates showed that doubling and tripling textile fiber reinforcements layers improved the flexural loading. In general, increasing the level of temperatures resulted in decrease in the flexural capacity of TRC plates. The highest decrease recorded for the specimen reinforced with 1-layer of carbon fiber textile subjected to 400 °C and was 33%.

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Keywords: Textile reinforced concrete TRC; flexural behavior; High temperatures; Dry carbon fibers.

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