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Roller-compacted concrete is a stiff, dry concrete mix that has a low paste content and is placed and compacted using a roller, usually a 10-ton vibratory roller. In pavement construction, the process is similar to that for an asphalt pavement. RCC mixes are used in a variety of heavy-duty applications at logging yards, loading docks, intermodal port facilities, large parking areas and dams.…, ASTM WK33682, Test Method for Preparation, Compaction and Density Determination of Roller-Compacted Concrete Specimens by Means of the Gyratory Compactor, According to Stacy G. Williams, Ph.D., director, Center for Training Transportation Professionals at the University of Arkansas, and a C09.45 member, notes that the Superpave gyratory compactor was developed during the 1980s as a means to provide a laboratory simulation of the compactive effort imparted by rollers on an asphalt mat. Roller-compacted concrete is compacted using the same type of…, ASTM WK41101, Practice for Molding Roller-Compacted Concrete in Beam Molds Using a Vibrating Hammer, Once approved, ASTM WK41101 will be used to consolidate RCC into beam molds with established flexural strengths. This is important because RCC is gaining use as a pavement for roads, shoulders and streets and all pavements need flexural strength data for design purposes. , ASTM WK42461, Test Method for Density (Unit Weight) and Air Content (Pressure Method) of Freshly Mixed Roller-Compacted Concrete, ASTM WK42461 covers the determination of density and air content of freshly mixed concrete. WK42461 will be used in the design of roller-compacted concrete mixtures and to aid in controlling the quality of those mixtures during RCC construction. ASTM International welcomes participation in the development of its standards. For more information on becoming an ASTM member, visit www.astm.org/JOIN…, ASTM Committee C09 Next Meeting:, Dec. 8-11, 2013, December Committee Week, Jacksonville, Fla., Technical Contact:, Stacy G. Williams, Ph.D., P.E., Center for Training Transportation Professionals, University of Arkansas, Fayetteville, Ark., Phone: 479-575-2220; sgwill@uark.edu , ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9474
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ASTM Technology and Underground Utilities Committee to Work on Proposed Standards at October MeetingASTM International Committee F36 on Technology and Underground Utilities is developing several proposed new standards. Two such standards are ASTM WK39910 , Practice for the Use of Distributed Optical Fiber Sensing for Monitoring Ground Movements Around Utilities and Tunnels, and ASTM WK41891 , Practice for the Full-Length Monitoring of the Interface Temperature of a Cured in Place Pipe Lining…, ASTM Committee F36 Next Meeting:, Oct. 6, 2013, in conjunction with the 86th Annual Water Environment Federation Technical Exhibition and Conference, Chicago, Ill., Technical Contact:, Jey K. Jeyapalan, Civic Enterprises LLC, New Milford, Conn., Phone: 860-343-1767; jkjeyapalan@earthlink.net , ASTM Staff Contact:, Ashley Wiand, Phone: 610-832-9551; awiand@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9448
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Laboratories and manufacturers of equipment used to test the flexural performance of concrete will be the primary users of a proposed new ASTM standard for supporting rollers. ASTM WK42757 , Practice for Supporting Rollers Used in Fiber-Reinforced Concrete Beam Tests, is being developed by Subcommittee C09.42 on Fiber-Reinforced Concrete , part of ASTM International Committee C09 on Concrete and…, ASTM Committee C09 Next Meeting:, Dec. 9-11, 2013, December Committee Week, Jacksonville, Fla., Technical Contact:, Stefan Bernard, TSE Pty Ltd., Sydney, Australia, Phone: 224-725-5801; s.bernard@tse.net.au, ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9444
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ASTM International Committee C01 on Cement is currently developing a proposed standard that will be used to help create data for comparing the compressive strength of alkali activated fly ash and natural pozzolans. ASTM WK42602 , Test Method for Compressive Strength of Alkali Activated Coal Fly Ash and Raw or Calcined Natural Pozzolan Cement Mortars (Using 2-inch or [50 mm] Cube Specimens), is…, ASTM Committee C01 Next Meeting:, Dec. 11-13, 2013, December Committee Week, Jacksonville, Fla., Technical Contact:, Ivan Diaz-Loya, Ph.D, CERATECH Inc., Baltimore, Md., Phone 443-524-4415; ivan.diazloya@ceratechinc.com , ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9445
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A proposed new ASTM International test method will be used by ready-mix concrete producers to characterize the drying behavior of new and existing concrete mixture proportions. ASTM WK37029 , Test Method for Measurement of Mass Loss Versus Time for One-Dimensional Drying of Saturated Concretes, is being developed by Subcommittee C09.66 on Concrete’s Resistance to Fluid Penetration , part of ASTM…, ASTM Committee C09 Next Meeting:, Dec. 8-11, 2013, December Committee Week, Jacksonville, Fla., Technical Contact:, Dale P. Bentz, National Institute of Standards and Technology, Gaithersburg, Md., Phone: 301-975-5865; dale.bentz@nist.gov , ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9390
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A proposed new ASTM International standard will cover the process, verification and record keeping procedures for recycling returned fresh concrete. The proposed standard, ASTM WK39876 , Specification for Returned Fresh Concrete for Use in a New Batch of Ready-Mixed Concrete, is being developed by Subcommittee C09.40 on Ready-Mixed Concrete , part of ASTM International Committee C09 on Concrete…, ASTM Committee C09 Next Meeting:, June 9-12, 2013, June Committee Week, Indianapolis, Ind., Technical Contact:, Eric P. Koehler, Verifi LLC, Cambridge, Mass., Phone: 617-498-4354; eric.koehler@verifitechnologies.com, ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9329
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A proposed new ASTM test method will be used to quantify the resistivity of concreting materials that are widely used for construction around the world. ASTM WK37880 , Test Method for Measuring the Surface Resistivity of Hardened Concrete Using the Wenner Four-Electrode Method, is being developed by Subcommittee C09.66 on Concrete’s Resistance to Fluid Penetration , part of ASTM International…, ASTM Committee C09 Next Meeting:, June 9-12, 2013, June Committee Week, Indianapolis, Ind., Technical Contact:, Kenneth A. Snyder, National Institute of Standards and Technology, Gaithersburg, Md., Phone: 301-975-4260; kenneth.snyder@nist.gov, ASTM Staff Contact:, Scott Orthey; Phone: 610-832-9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9321
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All ASTM International test methods are required to include statements on precision and bias. A new ASTM guide provides an overview of the steps needed in an interlaboratory study to obtain precision and bias statements, particularly as they relate to standards for petroleum products. The new standard, ASTM D7778 , Guide for Conducting an Interlaboratory Study to Determine the Precision of a Test…, ASTM Committee D02 Next Meeting:, Dec. 2-6, 2012, Norfolk, Va., Technical Contact:, Alex Lau, TCL Consulting, Whitby, Ontario, Canada, Phone: 905-665-7995; alextclau@rogers.com, ASTM Staff Contact:, David Bradley, Phone: 610-832-9681; dbradley@astm.org, ASTM PR Contact, : Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org R elease #9306
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A new standard for determining the silicon content in gasoline and other products has been approved by ASTM International Committee D02 on Petroleum Products and Lubricants . ASTM D7757 , Test Method for Silicon in Gasoline and Related Products by Monochromatic Wavelength Dispersive X-Ray Fluorescence Spectrometry, was developed by Subcommittee D02.03 on Elemental Analysis . ASTM D7757 covers the…, ASTM Committee D02 Next Meeting:, Dec. 2-6, 2012, Norfolk, Va., Technical Contact:, Kishore Nadkarni, Millennium Analytics Inc., East Brunswick, N.J. Phone: 732-613-8710; knadkarni@aol.com, ASTM Staff Contact:, David Bradley, Phone: 610-832-9681; dbradley@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org R elease #9258
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A new ASTM International specification is the first standard to identify the protocols necessary to blend mid-level ethanol fuels at the terminal and retail level that equal the fuel quality and performance expected from fuels meeting other ASTM fuel specifications. The new standard, ASTM D7794 , Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-…