Aseel Mustafa Farj Ali
Civil Engineering Department, Mustansiriyah University, Baghdad, Iraq.
Asst. Prof. Zinah Waleed Abass
Civil Engineering Department, Mustansiriyah University, Baghdad, Iraq.
Abstract
: The use of GFRP in concrete structures under harsh environment leads to extended service life and lower life cycle cost. This paper discusses the progress made in experimental studies designed to verify the response of (1000 * 1000) mm of reinforced concrete slabs subjected to shock loads. Four tiles were tested for failure under repeated weight drop in the middle of the board. Methods for measurements included a load cell and stress in the reinforcement and a laser sensor to measure the center deviation of the plates (LVDT). The experimental variables included in this study mainly focused on the number of fabric layers and the thickness of the slab (80 and 60) mm.
The results showed that covering the face of the slab reinforced with bars (GFRP) with three layers of glass cloth under the effect of repeated weight dropping is more effective in increasing the slab's tolerance to the number of strikes by (75.86%) than placing two layers of glass in the slab. And more effective than its counterpart with a thickness of (60) mm, and since these layers prevent the appearance of cracks in the pressure area, the increase in the thickness of the plate also affects the slab's resistance to more strokes by (50.34%). This increase in texture layers and thickness in the slab increases pre-cracking hardness, post-cracking toughness, and ultimately the ability to withstand more impact. The use of GFRP rods with glass textiles is more sustainable and cost-effective.
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References
- Y. Chen and I. M. May, “Reinforced concrete members under drop-weight impacts,” Proc. Inst. Civ. Eng. - Struct. Build., vol. 162, no. 1, pp. 45–56, 2009.
- B. Batarlar, “Behavior of reinforced concrete slabs subjected to impact loads,” A thesis submitted to the graduate school of engineering and sciences of İzmir institute of technology for the degree of Master of Science in Civil Engineering, in July, 2013.
- A. Ali and A. Al-Khafaji, “Modelling of Reinforced Concrete Slabs under Impact Loading,” Journal of Kerbala University vol. 12, no. 4, pp. 238–252, 2014.
- ACI 318R, “ACI 318R-14.pdf,” American Concrete Institute. pp. 1–524, 2014.
- T. D. Hrynyk and F. J. Vecchio, “Behavior of steel fiber-reinforced concrete slabs under impact load,” ACI Struct. J., vol. 111, no. 5, pp. 1213–1224, 2014.
- M. M. Kadhim, “Dynamic response of structural steel elements post-strenghened with CFRP” A thesis submitted to the University of Manchester for the degree of phD 2017.
- Kumar, S. (2022). A quest for sustainium (sustainability Premium): review of sustainable bonds. Academy of Accounting and Financial Studies Journal, Vol. 26, no.2, pp. 1-18
Allugunti V.R (2022). A machine learning model for skin disease classification using
convolution neural network. International Journal of Computing, Programming and Database
Management 3(1), 141-147
Allugunti V.R (2022). Breast cancer detection based on thermographic images using machine
learning and deep learning algorithms. International Journal of Engineering in Computer
Science 4(1), 49-56
A. I. Said and E. M. Mouwainea, “Numerical modeling of reinforced concrete slabs under impact loading” Key Engineering Materials, Vol. 857, pp 99-108, 2020.
- I. F. Ali, “Impact resistance of reinforced reactive powder concrete beams.” A thesis submitted to the University of Technology for the degree PhD 2018.
- S. D. M. A.- KHAZRAJI, “Strength enhancement of prestressed concrete dapped-end girders,” Journal of Engineering. no.10, Vol. 21 October 2015.
- American Concrete Institute. Committee 440 " Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-Reinforced polymer (FRP) Bars: ACI 440.1 R-15." American Concrete Institute (2015).
- American Concrete Institute. Committee 440 "Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures: ACI 440.2R-17." American Concrete Institute (2017).
