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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.
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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: Low-Strength Concrete and Controlled Low-Strength Material (CLSM) Produced With Class F Fly Ash
Author(s): T. R. Naik and B. W. Ramme
Publication: Special Publication
Appears on pages(s): 1-14
Keywords: backfilling; compressive strength; controlled low-strength material (CLSM); density (mass/volume); flowability; flowable fill; fly ash; low-strength concrete; mix proportioning; slump; slurries; tests; Materials Research
Abstract:Presents results of research performed to identify optimum mix proportions for production of controlled low-strength materials (CLSM) with high fly ash content. CLSM is defined by ACI Committee 229 as a cementitious material that is in a flowable state at the time of placement, with a specified compressive strength of 1200 psi (8.3 MPa or 172,800 psf) or less at 28 days. The fly ash used in this study met the requirements of ASTM C 618 for Class F material. Tests were carried out on concrete designed for 500 to 1500 psi compressive strength at 28 days, with fly ash contents of approximately 500 lb/yd 3. Slump was held at 8 ¦1 in. for all mixes produced. Compressive strengths at 28 days were found to range from 290 to 1640 psi. Construction experience and other planned applications are also discussed. 141-494
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