Mechanical Performance of Amorphous Metallic Fiber-Reinforced and Rubberized Thin Bonded Cement-Based Overlays
نویسندگان
چکیده
To improve the flexural behavior of thin bonded cement-based overlays, this study was carried out on use repair material incorporating amorphous metallic fibers (AMFs) in combination with rubber aggregates obtained from grinding worn-out tires. For study, sixteen mortar mix compositions were prepared to contain AMFs and/or be used as overlay while substrate plain cement mortar. Rubber incorporated at three different replacement ratios (i.e., 10%, 20% and 30%) by an equivalent volume sand, added dosages 10 kg/m3, 20 kg/m3 30 kg/m3). In composite beams (500 × 100 140 mm) comprising layer 40 investigated under loading. Experimental results showed that increase content resulted a decrease compressive strength, strength modulus elasticity. Rubberized fiber-reinforced cementitious composites (30R30F) exhibited higher toughness improved up 400%. Toughness maximum deflection enhanced significantly due synergetic effect AMF aggregates. It observed before peak load, plays its role delaying micro-crack propagation. Results also revealed steel reinforcement important restraining crack openings flexure post-peak region, control cracks propagating further bridging action provide residual strength.
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ژورنال
عنوان ژورنال: Sustainability
سال: 2022
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su14138226