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Particle size distribution, also known as gradation, refers to the proportions by dry mass of a soil distributed over specified particle-size ranges. Gradation is used to classify soils for engineering and agricultural purposes, since particle size influences how fast or slow water or other fluid moves through a soil. Two proposed new ASTM standards provide test methods for determining particle…, ASTM Committee D18 Next Meeting:, June 22-25, 2014, June Committee Week, Toronto, Ontario, Canada, Technical Contact:, Kendra Adams, Fugro Consultants Inc., Littleton, Colo., Phone: 636-357-4730; ksarocksu@yahoo.com , ASTM Staff Contact:, Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9575
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Adopted by ASTM International and Other Key Organizations, A new version of the Product Category Rules (PCR) for concrete, the document used for developing Environmental Product Declarations (EPDs) for concrete, was published this month by the Carbon Leadership Forum (CLF). The new PCR, Version 1.1, takes the original PCR published in November 2012 and makes improvements to the document based on input from key experts in the field of Life Cycle…, ASTM Staff Contact:, Chris Surak, Phone: 610-832-9711; csurak@astm.org, CLF Contact:, Kathrina Simonen, Phone: 206-685-7282; ksimonen@uw.edu, NRMCA Contact:, Lionel Lemay, Phone: 847-918-7101; llemay@nrmca.org Release #9562
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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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A proposed new ASTM International data management and reporting standard for shale oil and gas operations, including hydraulic fracturing, is under development. ASTM WK42803 , Practice for Data Management and Reporting Associated with Shale Oil and Gas Hydraulic Fracturing Operations, is under the jurisdiction of Subcommittee D18.26 on Hydraulic Fracturing , part of ASTM International Committee…, ASTM Committee D18 Next Meeting:, Jan. 26-28, 2014, January Committee Week, Houston, Texas, Technical Contact:, Caryl Alfaro, Earth Resource Systems LLC, Alpharetta, Ga., Phone: 404-513-5429; caryl@earthresourcesystems.com, ASTM Staff Contact:, Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9452
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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 provide performance-based data of sediment control devices to regulating entities, specifiers, consumers and manufacturers. ASTM WK11340 , Test Method for Determination of Sediment Control Product’s Ability to Reduce Soil Loss Associated with Rainfall-Induced Erosion, is being developed by Subcommittee D18.25 on Erosion and Sediment Control…, ASTM Committee D18 Next Meeting:, June 9-12, 2013, June Committee Week, Indianapolis, Ind., Technical Contact:, Ryan Vavra, American Excelsior Co., Rice Lake, Wis., Phone: 715-236-5656; rvavra@americanexcelsior.com ASTM Staff Contact: Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9358
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A proposed new ASTM International standard will link easy to use, cost-effective and nonintrusive passive sampling with concentration data to measure vapor intrusion. ASTM WK40037 , Guide for Determining Concentration Values from Groundwater, Air and Soil Gas Using Adsorbent-Based, Passive Samplers, is being developed by Subcommittee D18.21 on Groundwater and Vadose Zone Investigations , part of…, ASTM Committee D18 Next Meeting:, June 9-12, 2013, June Committee Week, Indianapolis, Ind., Technical Contact:, Lorne G. Everett, Ph.D., L. Everett and Associates, LLC, Santa Barbara, Calif., Phone: 805-880-9301; leverett@everettassociates.net , ASTM Staff Contact:, Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9353
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A new ASTM International standard will be used by contractors and government agencies for quality control and quality assurance of electromagnetic soil density gauges. ASTM D7830 , Test Method for In-Place Determination of Density (Unit Weight) and Water Content of Soil Using an Electromagnetic Soil Density Gauge, was developed by Subcommittee D18.08 on Special and Construction Control Tests ,…, ASTM Committee D18 Next Meeting:, June 9-12, 2013, June Committee Week, Indianapolis, Ind., Technical Contact:, Ronald E. Berube, QCQA Labs Inc., Schenectady, N.Y., Phone: 518-372-4067; rberube@qcqalabs.com , ASTM Staff Contact:, Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9354