Flexural Performance of a New Hybrid Basalt-Polypropylene Fiber-Reinforced Concrete Oriented to Concrete Pipelines

The bending performance of a basalt-polypropylene fiber-reinforced concrete (HBPFRC) was characterized by testing 24,400 × 100 mm3 prismatic specimens in four-point test JSCE-SF4 configuration. type and content both fibers were varied order to guarantee different target levels post-cracking flexural performance. results evidenced that mono-micro basalt fiber reinforced (BFRC) allows the increase strength (pre-cracking stage), while macro polypropylene (PPFRC) can effectively improve bearing capacity ductility composite for wide crack width range. Compared with plain specimens, toughness equivalent PPFRC hybrid (HFRC) increased 3.7–7.1 times 10–42.5%, respectively. From technical economic points view, optimal mass ratio (BF) (PPF) resulted being 1:2, total 6 kg/m3. This HFRC is seen as suitable material be used sewerage pipes where cracking control (crack formation control) paramount importance durability functionality pipeline well system case local failures.