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A01 STEEL, STAINLESS STEEL AND RELATED ALLOYS A04 IRON CASTINGS A05 METALLIC-COATED IRON AND STEEL PRODUCTS B01 ELECTRICAL CONDUCTORS B05 COPPER AND COPPER ALLOYS B07 LIGHT METALS AND ALLOYS C01 CEMENT C04 VITRIFIED CLAY PIPE C07 LIME C09 CONCRETE AND CONCRETE AGGREGATES C11 GYPSUM AND RELATED BUILDING MATERIALS AND SYSTEMS C12 MORTARS AND GROUTS FOR UNIT MASONRY C13 CONCRETE PIPE C14 GLASS AND GLASS PRODUCTS C15 MANUFACTURED MASONRY UNITS C16 THERMAL INSULATION C17 FIBER-REINFORCED CEMENT PRODUCTS C18 DIMENSION STONE C21 CERAMIC WHITEWARES AND RELATED PRODUCTS C24 BUILDING SEALS AND SEALANTS C27 PRECAST CONCRETE PRODUCTS D01 PAINT AND RELATED COATINGS, MATERIALS, AND APPLICATIONS D04 ROAD AND PAVING MATERIALS D07 WOOD D08 ROOFING AND WATERPROOFING D09 ELECTRICAL AND ELECTRONIC INSULATING MATERIALS D11 RUBBER D14 ADHESIVES D18 SOIL AND ROCK D20 PLASTICS D35 GEOSYNTHETICS E05 FIRE STANDARDS E06 PERFORMANCE OF BUILDINGS E33 BUILDING AND ENVIRONMENTAL ACOUSTICS E36 ACCREDITATION & CERTIFICATION E57 3D IMAGING SYSTEMS E60 SUSTAINABILITY F01 ELECTRONICS F06 RESILIENT FLOOR COVERINGS F13 PEDESTRIAN/WALKWAY SAFETY AND FOOTWEAR F16 FASTENERS F17 PLASTIC PIPING SYSTEMS F33 DETENTION AND CORRECTIONAL FACILITIES F36 TECHNOLOGY AND UNDERGROUND UTILITIES G03 WEATHERING AND DURABILITY A01 STEEL, STAINLESS STEEL AND RELATED ALLOYS C01 CEMENT C09 CONCRETE AND CONCRETE AGGREGATES D02 PETROLEUM PRODUCTS AND LUBRICANTS D03 GASEOUS FUELS D04 ROAD AND PAVING MATERIALS D15 ENGINE COOLANTS AND RELATED FLUIDS D18 SOIL AND ROCK D24 CARBON BLACK D35 GEOSYNTHETICS E12 COLOR AND APPEARANCE E17 VEHICLE - PAVEMENT SYSTEMS E21 SPACE SIMULATION AND APPLICATIONS OF SPACE TECHNOLOGY E36 ACCREDITATION & CERTIFICATION E57 3D IMAGING SYSTEMS F03 GASKETS F07 AEROSPACE AND AIRCRAFT F09 TIRES F16 FASTENERS F25 SHIPS AND MARINE TECHNOLOGY F37 LIGHT SPORT AIRCRAFT F38 UNMANNED AIRCRAFT SYSTEMS F39 AIRCRAFT SYSTEMS F41 UNMANNED MARITIME VEHICLE SYSTEMS (UMVS)
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Fiber-Reinforced Concrete

A proposed new ASTM standard will provide proper direction and ensure adequate documentation to aid in the interpretation, understanding and reduction of variance in test results for fiber-reinforced concrete.

WK35250, Practice for Fiber-Reinforced Concrete for Making and Curing Test Specimens in the Laboratory and Field, is now being developed by Subcommittee C09.42 on Fiber-Reinforced Concrete, part of ASTM Committee C09 on Concrete and Concrete Aggregates.

“Fiber-reinforced concrete is not the same as ordinary Portland cement concrete in terms of simple fabrication,” says Clifford MacDonald, fellow, American Concrete Institute, director of engineering, FORTA Corp., and chairman of the task group developing WK35250. “There are specific issues that need to be addressed to ensure consistency in making specimens for testing. At this time, there are limited and/or inconsistent practices instructing the industry on how to make FRC specimens.”

MacDonald also notes that current standards for other types of concrete test samples involve rodding or internal vibration, both methods that can lead to nonuniform fiber concrete. Both of these conditions increase variance between test results.

WK35250 describes testing done by means of external vibration, which is effective for fiber-reinforced concrete. Testing agencies and those who specify testing of fiber concrete will use the proposed standard, once it has been approved. Fibers can be used in any concrete, and particularly fiber reinforced concrete is used in precast applications, industrial floor slabs, composite metal decks, blast containment structures, overlays, tunnels and many other applications.

All interested parties are invited to participate in the development of WK35250.

CONTACT Technical Information: Clifford MacDonald, FORTA Corp. • Inver Grove Heights, Minn. • Phone: 651-552-5963 O ASTM Staff: Scott Orthey • Phone: 610-832-9730 O Upcoming Meeting: June 24-27 • June Committee Week • San Diego, Calif.

This article appears in the issue of Standardization News.