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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…
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Formalizing a method for making a cylindrical specimen of roller-compacted concrete in a gyratory compactor is the primary purpose of a proposed new ASTM International standard. ASTM WK33682 , Test Method for Preparation, Compaction and Density Determination of Roller-Compacted Concrete Specimens by Means of the Superpave Gyratory Compactor, is being developed by Subcommittee C09.45 on Roller-…
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A new ASTM International test method will provide an effective screening method to identify magnets that are subject to excessive corrosion in high humidity environments. ASTM A1071/A1071M , Test Method for Evaluating Hygrothermal Corrosion Resistance of Permanent Magnet Alloys, was developed by Subcommittee A06.01 on Test Methods , part of ASTM International Committee A06 on Magnetic Properties…
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ASTM International Committee A06 on Magnetic Properties welcomes the participation of all stakeholders with an interest in the development of international standards for magnetic materials and magnetic properties. The committee will hold its biannual meeting this fall. ASTM Committee A06, which was formed in 1903, oversees approximately 50 standards dealing with magnetic materials and magnetic…, ASTM Staff Contact:, Kelly Paul, Phone: 610-832-9745; kpaul@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8975
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While the use of internally cured concrete in construction is not new, there is now better understanding of the internal curing process and why IC using pre-wetted lightweight aggregate increases concrete durability and service life in an economical and practical way. However, there is not currently a standard for lightweight aggregates for internal curing. ASTM International Committee C09 on…
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A new ASTM International standard, adopted from an American Concrete Institute test method, will be used to help ensure the safety of construction projects. ASTM C1741 , Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout, is under the jurisdiction of Subcommittee C09.41 on Hydraulic Cement Grouts , part of ASTM International Committee C09 on Concrete and Concrete…
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Piston ring/liner interface can contribute as much as half the total friction loss in internal combustion engines, with the resulting wear leading to reduced energy efficiency and raised emissions. A new ASTM International standard provides a method to more accurately measure small amounts of wear on curved piston ring segments and their counterfaces after lubricated bench-scale testing. “Coupled…
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ASTM Committee G02 on Wear and Erosion is including a field trip in the plans for its Dec. 8-9 meeting in Jacksonville, Fla. Committee members will be visiting the Tribology Laboratory in the mechanical engineering department at the University of Florida in Gainesville. The Tribology Laboratory is actively involved in a wide variety of tribological research and tribology education projects. The…
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ASTM International Committee C09 on Concrete and Concrete Aggregates is currently developing a proposed standard that addresses bleed stability. ASTM WK28156 , Test Method for Bleed Stability of Cementitious Grout Under Static Pressure, is under the jurisdiction of ASTM International Subcommittee C09.41 on Hydraulic Cement Grouts. When cementitious grouts bleed, mixing water separates from the…, ASTM Committee C09 Next Meeting:, Dec. 6-8, December Committee Week, New Orleans, La., Technical Contact:, Fred Goodwin, BASF Construction Chemicals, Cleveland, Ohio, Phone: 216-839-7009; fred.goodwin@basf.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 #8648
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A new ASTM standard will be useful to slide and engine companies, as well as makers of bushing materials, in studies that involve the measurement of system friction forces. The new standard, ASTM G203 , Guide for Determining Friction Energy Dissipation in Reciprocating Tribosystems, was developed by Subcommittee G02.50 on Friction, part of ASTM International Committee G02 on Wear and Erosion.…