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Volume Title: ICASGE2017

DOI: ICASGE-RCS

Rasha T.S. Mabrouk; Mohammed H. Abd-EL Rahman; Akram M. Torkey

It has been widely known from past researches that fibers can be used effectively as significant shear reinforcement. However, most of these data available deal with elements reinforced with steel fibers and a few focus on concrete produced with other kinds of fibers for example polypropylene or glass fibers. These types of fibers have a number of advantages such as durability and corrosion avoidance as well as fire resistance and improved impact resistance. This research tries to investigate the behavior of wide shallow fiber reinforced concrete beams in shear. The main objectives are to study the ability of polypropylene, glass and steel fibers in providing a substantially more stable shear behavior, as well as the possibility of using these types of fibers in replacing the conventional shear reinforcement in wide shallow beams. This paper focuses on the experimental program conducted using thirteen wide shallow beams cast using the three types of fibers mentioned above with two different volume ratios namely 1% and 1.5% as well as varying the width to effective depth ratios. All beams were tested under two point loading. The beams had a fixed span of 2000 mm. Eight of the beams had a width of 400 mm and depth of 300 mm while the other four were 550 mm in width and 250 mm in depth. The output results were compared and contrasted and conclusions were drawn about the feasibility of using these three types of fibers as well as some recommendations given for practical use.

Wide-Shallow Beams; Minimum shear reinforcement; Steel fiber; polypropylene fiber; Glass fiber; durability; Finite element analysis