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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 Fence Committee Approves New Standards on Ornamental Aluminum Fencing and Polymer Privacy SlatsASTM International Committee F14 on Fences has recently approved two new standards: ASTM F2957 , Specification for Ornamental Aluminum Fence Systems; and ASTM F3000/F3000M , Specification for Polymer Privacy Insert Slats for Chain Link Fabric and Privacy Chain Link Fabric Manufactured Containing Pre-Installed Privacy Slats., Ornamental Aluminum Fence Systems, ASTM F2957 was developed by Subcommittee F14.35 on Architectural Metal Fence Systems. The new standard defines minimum selection criteria and test procedures to ensure product users that an ornamental aluminum fence system has sufficient strength to withstand reasonable loads and forces, and has the appropriate combination of material and organic coating surface protection to withstand effects of…, Polymer Privacy Insert Slats, ASTM F3000/F3000M is under the jurisdiction of Subcommittee F14.40 on Chain Link Fence and Wire Accessories . ASTM F3000/F3000M covers both inserted slats that are placed into chain link fabric after the fence has been installed as well as slats that are pre-inserted into chain link mesh during the link weaving process. According to William Ullrich, principal, Link Consulting LLC, and an F14…, ASTM Committee F14 Next Meeting:, June 25, 2013, ASTM International Headquarters, West Conshohocken, Pa., Technical Contact:, (ASTM F2957) Larry Burkholder, Digger Specialties Inc., Bremen, Ind., Phone: 574-546-5999; lburkholder@diggerspecialties.com; (ASTM F3000/F3000M) William Ullrich, Link Consulting LLC, Annapolis, Md., Phone: 410-849-2610; bullrich.link@comcast.net , ASTM Staff Contact:, Thomas O’Toole, Phone: 610-832-9739; totoole@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9375
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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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Slats inserted into chain link fences can provide up to 95 percent more privacy and enhance the aesthetic appeal of a fence. A proposed new ASTM International specification will answer the need for better standardization of these privacy slats. ASTM WK36470 , Specification for Privacy Slats for Chain Link Fence, is being developed by Subcommittee F14.40 on Chain Link Fence and Wire Accessories ,…
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ASTM International Committee F14 on Fences welcomes participation in the development of a proposed new standard, ASTM WK36054 , Guide for Anchoring Steel Fence and Gate Posts in Lieu of Concrete Footings. The proposed standard is under the jurisdiction of Subcommittee F14.15 on Other Fence Systems and Components . According to Ray Statz, chairman, Qual Line Fence Corp., and chairman of F14.15,…
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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. ASTM 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…