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
Learn More
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 48331-3439 USA
Phone: 1.248.848.3700 Fax: 1.248.848.3701 Staff Directory
Email Support
Feedback via Email Phone: 1.248.848.3800
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: Self-Compacting Concrete With High-Volume Crushed Rock Fines
Author(s): A. Nishio, H. Tamura and M. Ohashi
Publication: Special Publication
Volume: 179
Issue:
Appears on pages(s): 617-630
Keywords: cracking (fracturing); drying shrinkage; self-compacting concrete; tests
Date: 6/1/1998
Abstract:Dry crushed rock fines (CRF) which is a nuisance waste at crushed rock aggregate plants has been investigated for its use as a mineral addition in concrete. According to the research conducted so far, both methylene-blue test and sand equivalent test can be applied for the screening test on the quality of CRF Furthermore, CRF is useful not only as supplemental fines in fine particle lacking aggregates such as sea-dredged sand, but also for high-volune fines in self-compacting concrete. This paper presents the test results of a prototype reinforced concrete column and wall structure cast with self-compacting concrete (SCC) containing high-volume of CRF (CRFSCC). Judging from the test results of concrete cores obtained from the column and wall of the structure, the following conclusions were obtained. 1) The greater the distance the concrete flowed through reinforcing steel bars, the greater the segregation of the CRFSCC. 2) Both the front part of the CRFSCC flow and upper part of the CRFSCC structure contained less amount of coarse aggregate, and showed both low values for modulus of elasticity and high values for drying shrinkage. 3) In order to get more homogeneous quality in the structure with CRFSCC, special care is needed for concrete casting procedures. It is suggested that a reverse casting flow direction technique may be effective. 4) Drying shrinkage of CRFSCC did not result in deleterious cracking on the structure.
Click here to become an online Journal subscriber