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Concrete is the most widely used construction material throughout the world. Understanding the drying behavior of a given concrete mixture is critical to any construction project. Ready-mix concrete producers and engineers will be able to use a new ASTM International standard to characterize how hardened concrete mixtures dry. The new standard is ASTM C1792 , Test Method for Measurement of Mass…, ASTM Committee C09 Next Meeting:, Dec. 7-10, December Committee Week, New Orleans, La., Technical Contact:, Dale P. Bentz, National Institute of Standards and Technology, Gaithersburg, Md., tel +1.301.975.5865; dale.bentz@nist.gov, ASTM Staff Contact:, Scott Orthey, tel +1.610.832.9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, tel +1.610.832.9603; bschindl@astm.org Release #9701
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Concrete technologists need to have a well-defined, useful and efficient means to detect and possibly address concrete material incompatibility issues. This need will be addressed in a proposed new ASTM International standard, ASTM WK40615 , Practice for Mixing and Comparing Performance of Concrete Materials Using Mini-Mix Mortar Mixtures. Due to an increased focus on sustainability, the…, ASTM Committee C09 Next Meeting:, Dec. 7-10, 2014, December Committee, New Orleans, La., Technical Contact:, Ara A. Jeknavorian, Ph.D., Jeknavorian Consulting Services, Phone: 617-803-2612; ara.a.jeknavorian@gmail.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 #9669
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In 1914, a small group of professionals gathered to work on methods for making and testing field specimens of concrete. The ASTM International committee that resulted from that first meeting — C09 on Concrete and Concrete Aggregates — celebrated its 100th anniversary during a reception and dinner on June 23 at the Sheraton Centre Toronto, Canada. The centennial celebration occurred during C09’s…, ASTM Committee C09 Next Meeting:, Dec. 7-10, 2014, December Committee Week, New Orleans, La., ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindler@astm.org Release #9605
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A proposed new ASTM standard will provide a test method for determining the density and air content of roller-compacted concrete, which is used in the construction of dams and spillways as well as for highway road base material and wearing surfaces on some roads and parking lots. Once approved, ASTM WK42461 , Test Method for Density (Unit Weight) and Air Content (Pressure Method) of Freshly Mixed…, ASTM Committee C09 Next Meeting:, June 22-25, 2014, June Committee Week, Toronto, Ontario, Canada, Technical Contact:, Dennis N. Clute, P.E., USDA – Natural Resources Conservation Service, Fort Worth, Texas, Phone: 817-509-3765; dennis.clute@ftw.usda.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 #9655
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Committee Now Developing Proposed Specification for Ground Limestone and Other Fines, ASTM International Committee C09 on Concrete and Concrete Aggregates has recently approved a new test method for evaluating the suitability of fine aggregates and other fillers for use in concrete. ASTM C1777 , Test Method for Rapid Determination of the Methylene Blue Value for Fine Aggregate or Mineral Filler Using a Colorimeter, was developed by Subcommittee C09.20 on Normal Weight Aggregates…, ASTM C1777, Methylene Blue Value, C1777 provides a rapid test for laboratory and field use to determine the amount of methylene blue adsorbed by a specimen of fine aggregate or mineral filter “The test in ASTM C1777 will be used to distinguish between harmful and non-harmful fines in concrete aggregate,” says Eric Koehler, vice president, Verifi LLC, and a C09 member. In addition, Koehler notes, ASTM C1777 will be used to qualify…, ASTM WK36906, Ground Limestone Fines, A proposed new standard will reference ASTM C1777. ASTM WK36906 , Specification for Ground Limestone Fines and Other Finely Divided Materials for Use in Concrete, is also being developed by C09.20. Once approved, WK36906 will allow concrete producers to use such products approved as sources of materials to be used in concrete mix specified by architects/engineers and departments of transportation…, ASTM Committee C09 Next Meeting:, June 22-25, 2014, June Committee Week, Toronto, Ontario, Canada, Technical Contacts: (, C1777) Eric Koehler, Verifi LLC, Cambridge, Mass., Phone: 617-498-4354; eric.koehler@verificoncrete.com ; (WK36906) Caroline Talbot, Ph.D., P.E., The Euclid Chemical Co., Cleveland, Ohio, Phone: 985-237-5685; ctalbot@euclidchemical.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 #9627
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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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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