Strain hardening ultra-high performance fiber reinforced cementitious composites: Effect of fiber type and concentration

被引：157

作者：

Gesoglu, Mehmet ^{[1
]}

Guneyisi, Erhan ^{[1
]}

Muhyaddin, Guler Fakhraddin ^{[1
]}

Asaad, Diler Sabah ^{[1
]}

机构：

[1] Gaziantep Univ, Dept Civil Engn, Gaziantep, Turkey

来源：

COMPOSITES PART B-ENGINEERING | 2016年 / 103卷

关键词：

Fracture; Glass fiber; Mechanical properties; Steel fiber; Strain hardening; Ultra high performance; MECHANICAL-PROPERTIES; HIGH-STRENGTH; TENSILE BEHAVIOR; CONCRETE BEAMS; SILICA FUME; MICROSTRUCTURE; RESISTANCE; HYDRATION; FRC;

D O I：

10.1016/j.compositesb.2016.08.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An experimental work was carried out to investigate the effects of micro-steel, hooked-steel, and micro glass fibers on the mechanical properties and ductility of Ultra-high Performance Cementitious Composites (UHPC). The aspect ratios of the of micro-steel, hooked-steel, and micro-glass fibers were 717, 55 and 722, respectively. At a water-binder ratio of 0.195, three groups of UHPCs containing 0.25, 0.5, 0.75, 1, 1.5, and 2% fiber volume fractions were produced and tested for compressive strength, splitting tensile strength, modulus of elasticity, flexural strength, load-displacement behavior, fracture energy, and characteristic length. Test results revealed that the mixes with 2% of micro steel fiber exhibited the best compressive strength of 180 MPa as well as the highest splitting tensile strength and modulus of elasticity. However, the mixes with 2% of hooked steel fiber displayed a strain hardening load-displacement behavior with a substantially enhanced ductility. The results also showed that the beneficial influence of using micro glass fiber began to decrease after 1.5% of the fiber volume. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：74 / 83

页数：10

共 53 条

[11] Fibre reinforced cement-based (FRC) composites after over 40 years of development in building and civil engineering [J].