Title:
Flexural Behavior of Fiber Mesh-Reinforced Concrete with Glass Aggregate
Author(s):
Bin Mu and Christian Meyer
Publication:
Materials Journal
Volume:
99
Issue:
5
Appears on pages(s):
425-434
Keywords:
fiber-reinforced concrete; glass; mesh; reinforcement; toughness
DOI:
10.14359/12320
Date:
9/1/2002
Abstract:
The flexural responses of concrete specimens with crushed waste glass as aggregate and reinforced either with randomly distributed short fibers or with continuous fiber mesh are compared for equal fiber volume ratios. The short fibers are distributed either throughout the entire volume of the test beam, over one-half of the beam depth on the tension side, or within the most highly strained quarter depth of the beam. For fiber mesh-reinforced specimens, different loading directions lead to different mechanical response because of different crimped yarn and wavy yarn structures of the fabric. The optimal orientation of reinforcing yarns is determined experimentally and verified with a theoretical model. All specimens are tested according to ASTM C 1018, and toughness indices I5, I10, I20 are determined from the load-deformation curves of this closed-loop three-point bending test. Three different types of fiber material (AR-glass, PVA, and polypropylene) are studied. The results indicate that fiber efficiency increases with their concentration near the tension face, and fiber mesh is considerably more effective in bending than randomly distributed fibers.