In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effect of Steel Fibers on Minimum Shear Reinforcement of High-Strength Concrete Beams
Author(s): Chul-Goo Kim, Hyerin Lee, Hong-Gun Park, Geon-Ho Hong, and Su-Min Kang
Publication: Structural Journal
Appears on pages(s): 1109-1119
Keywords: high-strength concrete; minimum shear reinforcement; reinforced concrete; shear strength; steel fiber; stirrup
Abstract:Minimum shear reinforcement is required for reinforced concrete (RC) flexural members to prevent brittle shear failure considering uncertainty of concrete shear strength in current design codes. In ACI 318-14, the use of steel fibers for minimum shear reinforcement is permitted within limited ranges of design parameters such as a concrete compressive strength lower than 40 MPa (5.8 ksi), beam depth smaller than 600 mm (24 in.); and fiber volume ratio over 0.75%. In this study, the effect of steel fibers on the shear strength was studied for high-strength concrete beams (60 MPa [8.7 ksi]). The main test parameters were the concrete strength, use of steel fibers, and use of stirrups. The test results showed that steel fibers with a volume fraction of 0.75% significantly increased the shear strength of high-strength concrete beams. This is mainly because the high-strength concrete increased the contribution of the steel fibers by increasing the tension zone depth. Such effect of steel fibers was confirmed by results from previous studies. The test results also showed that the limitation of concrete strength can be increased from 40 to 60 MPa (5.8 to 8.7 ksi).
Click here to become an online Journal subscriber