Shear steel fibers are made from cold-rolled strip steel through shearing and scoring processes. Adding shear steel fiber to concrete can effectively prevent the propagation of microcracks and the formation of macroscopic cracks, significantly improving the tensile, bending, impact, and fatigue resistance of concrete.
When specifying structural shear steel fiber products for civil engineering projects, key engineering Design Factors must be considered to optimize concrete mix designs and structural safety:
1、Aspect Ratio and Geometry Design Factors: The ratio of length to equivalent diameter determines fiber performance. Our engineered sheared steel fiber options feature optimized aspect ratios that balance high-flexural toughness with effortless mixing dispersion.
2、Tensile Strength Design Factors: Manufactured from strict cold-rolled strip steel stock, our shear steel fiber achieves elevated tensile limits (typically exceeding 600-1100 MPa), preventing fiber rupture under extreme shear loading.
3、Matrix Bonding Design Factors: Surface scoring and clean sheared edges enhance the interfacial transition zone (ITZ) bond strength between the shear steel fiber matrix and cementitious paste.
4、Dosage and Workability Design Factors: Depending on structural requirements, dosage rates range from 15 kg/m³ to 60 kg/m³. Our shear steel fiber geometry prevents balling during batching, preserving concrete slump and pumpability.
