TITLE:
Experimental Study on the Basic Mechanical Properties and Stress-Strain Relationship of Basalt-Fiber-Reinforced Recycled Aggregate Concrete
AUTHORS:
Lucen Hao
KEYWORDS:
Basalt Fibers, Recycled Aggregate Concrete, Mechanical Properties, Stress-Strain Relationship
JOURNAL NAME:
Engineering,
Vol.18 No.11,
November
9,
2026
ABSTRACT: Basalt-fiber-reinforced recycled aggregate concrete (BFRAC) with fiber dosages of 0, 3, and 6 kg/m3 was investigated using cube compressive, splitting tensile, flexural, and axial compressive tests. The compressive stress-strain responses were also examined and fitted using a piecewise constitutive model. The reported strength values decreased at 3 kg/m3 and increased at 6 kg/m3 relative to the fiber-free mixture. At 6 kg/m3, the reported splitting tensile and flexural strengths were numerically higher by 11.0% and 10.5%, respectively. The reported peak strain and strain at 50% of peak stress on the descending branch increased by 8.7% and 84.3%, respectively. These observations suggest greater deformation capacity under the reported test conditions. The strength differences are treated as descriptive because their reliability requires verification against specimen and batch variability.