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, dissemination, and adoption of its 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
Chat with Us Online Now
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: Dynamic Compressive Toughness of High Strength Fiber Reinforced Concrete
Author(s): Lihe Zhang and Sidney Mindess
Publication: Special Publication
Appears on pages(s): 1-21
Keywords: Fiber reinforced concrete, dynamic compressive toughness, impact, dynamic improvement factor
Abstract:Fiber reinforced concrete (FRC) is known to exhibit superior performance in its post-peak energy absorption capacity, (i.e., toughness) under flexural and tensile loading. However, the behavior of fiber reinforced concrete under compressive impact has not previously been investigated. In the present research, the strain rate response of fiber reinforced concrete under compressive impact was investigated over the full strain rate regime, from static loading to high strain rate loading, and finally to impact loading. FRC was found to have higher strengths under compressive impact loading than under static loading. The compressive toughness under impact loading increased due to the high peak load and the high strain capacity. FRC displays a much higher Dynamic Improvement Factor (DIF) under compressive impact and provides an overall higher performance under impact than under static loading. Finally, the existing CEB model for dynamic behavior of concrete was evaluated and a new constitutive model, the RCM modelis proposed to describe the DIF of the compressive strength of FRC. The model was found to match the test results for FRC at 50 MPa, 90 MPa, and 110 MPa (7250, 10,150 and 13,000 psi) at strain rate from 10-5 1/sec to the strain rate of 10 1/sec.
Click here to become an online Journal subscriber