Mechanical properties of natural fibers reinforced sustainable masonry |
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Affiliation: | 1. Department of Civil Engineering and Engineering Mechanics, Columbia University, 500 W. 120th St., New York, NY 10027, USA;2. School of Civil Engineering, Purdue University, 550 W Stadium Ave, West Lafayette, IN 47907, USA |
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Abstract: | This research evaluates the physical and mechanical properties of Portland cement masonry blocks reinforced with lechuguilla natural fibers, that were lightened with 2-l bottles of polyethylene terephthalate.A concrete mix was designed for a target compressive strength of 16 MPa at 28 days, and slump of 70 mm. Masonry concrete blocks with dimensions of 730 × 340 × 130 mm were produced for two different fiber lengths (25 and 50 mm) and with fiber contents of 0.25%, 0.50%, 0.75% and 1.0%.Based on the obtained results, it was found that as the aspect ratio decreases the compressive strength increases and that the use of natural fiber (Vf = 0.5–0.75%) improves masonry post-cracking features, showing a ductile behavior and generating a uniform cracking pattern in the longitudinal sides of the blocks. |
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