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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: Design and Properties of Concretes with Strength Over 1500 kgf /cm2
Author(s): G. Tognon, P. Ursella, and G. Coppetti
Publication: Journal Proceedings
Appears on pages(s): 171-178
Keywords: atmospheric pressure steam curing; autoclaving; beams (supports); binders (material); compressive strength; concrete piles; ductility; flexural strength; high strength concretes; mix proportioning; moment-curvature relationship; portland cements; quartz
Abstract:Very high strength concretes (VHSC) having a compressive strength over 1500 kgf/cm2 (21,500 psi) were made. This result was reached by using high strength portland cement, ground quarfz, and siliceous aggregates, and by subjecting the concretes to a two-stage low and high pressure steam curing. The VHSC have a high modulus of elasticity, a IOW Poisson’s ratio, and an almost linear stress-strain curve up to the maximum load. Reinforced concrefe beams (0.10 x 0.20 x 2.00 m) having different reinforcement ratios from (0.87 to 8.88 percent) were manufactured using VHSC and an ordinary concrete as a reference. These beams were tested in flexure by observing the trends of the curvature as a function of the applied moment. By using VHSC in the reinforced beams, a considerable increase in the flexural rigidities and in the ultimate resisting moments was noted; the high modulus of elasticity and the high mechanical strength have no unfavorable effects on ductility. The VHSC were used in an industrial test: centrifuged piles 12 high and 0.50m in diameter were manufactured. These piles were compared with the normal concrete piles.
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