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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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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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ASTM B986 , Test Method for Determination of Tensile Strength by Mass Method for Stranded Conductors Intended for use in Electronic Application, will be used within the electronics and aerospace industries to validate tensile strength specification requirements for electrical conductors. ASTM B986 was developed by Subcommittee B01.02 on Methods of Test and Sampling Procedure , part of ASTM…, ASTM Committee B01 Next Meeting:, Oct. 23, 2013, October Committee Week, Jacksonville, Fla., Technical Contact:, Stephen Childers, IWG High Performance Conductors Inc., Inman, S.C., Phone: 864-472-0438; stephen.childers@iwghpc.com , ASTM Staff Contact:, Kristy Straiton, Phone: 610-832-9640; kstraiton@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9364
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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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Prestressing concrete has existed in the construction industry for more than 100 years, but without a repeatable and reproducible test capable of quantifying the bond performance of prestressing steel wire strand (commonly called PC strand). This test has now been developed in the form of ASTM A1081/A1081M , Test Method for Evaluating Bond of Seven-Wire Steel Prestressing Strand. ASTM A1081/…, ASTM Committee A01 Next Meeting:, May 20-23, 2013, May Committee Week, Indianapolis, Ind., Technical Contact:, Christopher F. Reeve, Insteel Wire Products, Gallatin, Tenn., Phone: 615-451-6330, ext. 2762; creeve@insteel.com, ASTM Staff Contact:, Kevin Shanahan, Phone: 610-832-9737; kshanahan@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9325
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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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Bolting used in the oil and gas industries for offshore drilling platforms, sour gas service, in expanders and compressors in pipeline service, in power generation facilities and in heat exchanger and cryogenic applications is now covered by a new ASTM International standard. ASTM A1082/A1082M , Specification for High Strength Precipitation Hardening and Duplex Stainless Steel Bolting for Special…, ASTM Committee A01 Next Meeting:, May 20-23, 2013, May Committee Week, Indianapolis, Ind., Technical Contact:, Lester Burgess, TSP/US Bolt Manufacturing, Houston, Texas, Phone: 713-230-2500; lburgess@usbolt.com, ASTM Staff Contact:, Kevin Shanahan, Phone: 610-832-9737; kshanahan@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9308
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A general need in the steel industry for a standard defining the basic quality control requirements for hot isostatic pressing has led to the development of a new ASTM International standard, ASTM A1080 , Practice for Hot Isostatic Pressing of Steel, Stainless Steel and Related Alloy Castings. A1080 was developed by Subcommittee A01.18 on Castings , part of ASTM International Committee A01 on…, ASTM Committee A01 Next Meeting:, Nov. 12-15, 2012, November Committee Week, Atlanta, Ga., Technical Contact:, John Schleicher, Orchid Orthopedics, Oregon City, Ore., Phone: 503-650-2708; john.schleicher@orchid-ortho.com, ASTM Staff Contact:, Kevin Shanahan, Phone: 610-832-9737; kshanahan@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org R elease #9255