Evaluation on Protection Performance and On-Site Applicability of Hybrid Fiber-Reinforced Concrete

• Published in: International journal of concrete structures and materials Vol. 13; no. 3; pp. 429 - 438
• Main Authors: Han, Dongyeop, Park, Yong-Jun, Han, Min-Cheol, Yi, Seong-Tae
• Format: Journal Article
• Language: English
• Published: Singapore 한국콘크리트학회 01.12.2019; Springer Singapore; Springer; Springer Nature B.V; SpringerOpen
• Subjects: blast resistant concrete; Building Materials; Concrete industry; Construction sites; Engineering; Fiber reinforced concretes; fiber-reinforced concrete; field application; hybrid fibers; Impact loads; Mechanical properties; Projectiles; Ready mixed concrete; ready-mix concrete system; Reinforced concrete; Reinforcing steels; Solid Mechanics; Structural Materials; Workability; 토목공학; South Korea; blast resistant concrete; field application; ready-mix concrete system; fiber-reinforced concrete; hybrid fibers
• ISSN: 1976-0485; 2234-1315
• DOI: 10.1186/s40069-018-0329-5

The aim of this research is to evaluate the protecting performance of hybrid fiber-reinforced concrete against lateral forces such as explosives or flying objects. The objective of this research is to better prepare this concrete for use in the ready-mix concrete industry. Even though the fiber addition gives it strong mechanical properties, it also decreases workability due to the inefficient dispersion of fibers. Therefore, it has been difficult to apply to the ready-mix concrete plant’s mixing, delivery and on-site placement. The authors have developed a combined steel and polyaramid fiber that gives the favorable protection needed against high-impact forces and provides a suitable workability for the ready-mix concrete system. To evaluate the required performance, the hybrid fiber-reinforced concrete specimen was subjected to high-speed projectiles and had its workability and performance tested on a construction site of an established ready-mix concrete company. The hybrid fiber-reinforced concrete successfully provided the protection capabilities sought for the finished product and provided a workable-ready mix applicability.