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
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: Properties of Fiber Reinforced High-Strength Semi-Lightweight Concrete
Author(s): P. Balaguru and Michael G. Dipsia
Publication: Materials Journal
Appears on pages(s): 399-405
Keywords: compressive strength; expanded shale concretes; volume change; fiber reinforced concretes; flexural strength; lightweight concretes; modulus of elasticity; shear properties; silica fume; tension; water-reducing agents; Materials Research
Abstract:The results of an experimental investigation of the behavior of fiber reinforced high-strength semi-lightweight concrete are presented in this paper. The properties investigated include the workability, behavior under compression, splitting tension, flexure, and shear. The compressive strength was about 9000 psi (62.1 MPa) for a unit weight of 130 lb/ft 3 (2083 kg/m 3). Silica fume and high-range water-reducing admixtures were used to obtain the high strength. The lightweight aggregate used was made of expanded shale. The primary independent variables were fiber content and fiber length. Hooked-end steel fibers were used at volume contents ranging from 75 to 150 lb/yd 3 (45 to 90 kg/m 3). Fiber lengths and the corresponding aspect (length/diameter) ratios were 1.2, 2.0, 2.4 in. (30, 50, 60 mm) and 60, 75, and 100, respectively. The results indicate that silica fume can be successfully used to obtain high strength. The brittleness of silica fume concrete can be overcome by using fibers. The addition of fibers provides a significant increase in Young's modulus, splitting tensile strength, and shear strength. Strength increase is also considerable under flexure. In all cases, fibers provide substantial improvement in ductility.
Click here to become an online Journal subscriber