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Zeta potential provides a guide to the stability of solid or liquid particles in a liquid system, such as intravenous foods. A new ASTM International standard focuses on the zeta potential in systems containing biological material such as proteins, DNA, liposomes and other organic materials. The new standard, ASTM E2865 , Guide for Measurement of Electrophoretic Mobility and Zeta Potential of…, ASTM Committee E56 Next Meeting:, Nov. 12-13, November Committee Week, Atlanta Ga., Technical Contact:, Alan Rawle, Ph.D, Malvern Instruments Inc., Westborough, Mass., Phone: 508-768-6434; alan.rawle@malvern.com, ASTM Staff Contact:, Kathleen McClung, Phone: 610-832-9717; kmcclung@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org R elease #9317
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Continuous friction measurement equipment (CFME) used to determine skid resistance is the focus of a proposed new ASTM International standard. Interested parties are invited to participate in the development of ASTM WK34937 , Guide for Evaluation, Calibration and Correlation of Continuous Friction Measurement Equipment (CFME). The proposed standard is under the jurisdiction of Subcommittee E17.21…
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Interlocking concrete pavements are extensively used in low-speed urban and rural roads throughout Europe and are seeing increased use as an alternative to asphalt and cast-in-place concrete in the United States. A proposed new ASTM International standard will address the management by city and county transportation agencies of roads made from interlocking concrete pavements. The proposed new…, ASTM Committee E17 Next Meeting:, June 5-6, 2011, State College, Pa., Technical Contact:, David R. Smith, Interlocking Concrete Pavement Institute, Herndon, Va., Phone: 703-657-6900, ext. 201; dsmith@icpi.org, ASTM Staff Contact:, Daniel Smith, Phone: 610-832-9727; dsmith@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8857
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Traffic monitoring is a means of counting and classifying vehicles and measuring vehicle flow characteristics, such as vehicle speed, lane occupancy, turning movements and other items typically used to portray traffic movement. In order for traffic monitoring data to be assessed properly, information on how the data were collected, edited, summarized and reported must be provided. This obligation…
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ASTM International Committee E56 on Nanotechnology has created a new subcommittee, E56.06 on Nano-Enabled Consumer Products. The scope of E56.06 is to develop scientifically credible standards for identification, evaluation and assessment of engineered nanomaterials in consumer products. Members of E56.06 will develop standards for determining the presence of engineered nanomaterials in consumer…, ASTM Committee E56 Next Meeting:, Nov 15-16, November Committee Week, San Antonio, Texas, Technical Contact:, (Chairman, E56) Debbie Kaiser, National Institute of Standards and Technology, Gaithersburg, Md., Phone: 301-975-6759; debra.kaiser@nist.gov ; (Subcommittee E56.06) Aleks Stefaniak, National Institute for Occupational Safety and Health, Morgantown, W.Va., Phone: 304-285-6302; boq9@cdc.gov, ASTM Staff Contact:, Timothy Brooke, Phone: 610-832-9729; tbrooke@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8698/Sept2010
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ASTM grain size is a property written into many specifications for metals, with finer grain sizes generally indicating better mechanical properties, such as formability. While measuring certain materials for such properties can be difficult, electron backscatter diffraction can provide precise determinations as well as give information on grain size distribution and statistics. A new ASTM…
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Since the appearance of the first California-type models around 1940, the profilograph has been a popular device used for quality control in the construction of pavements. Both roadway and airfield landing agencies have adopted roughness indexes computed from profilograph-derived measurements as a level of construction quality. Emerging high-speed inertial profilers can now quickly collect…
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A recent revision to ASTM International standard E384 , Test Method for Knoop and Vickers Hardness of Materials, expands the range of its coverage. The standard is under the jurisdiction of Subcommittee E04.05 on Microindentation Hardness Testing, part of ASTM International Committee E04 on Metallography. The revision incorporates ASTM E92 , Test Method for Vickers Hardness of Metallic Materials…
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A proposed new standard being developed by ASTM International Committee E17 on Vehicle-Pavement Systems will be the first to describe how truth-in-data should be applied to traffic monitoring data collection, summarization and reporting. WK25280 , Practice for Highway Traffic Monitoring Truth-in-Data, is under the jurisdiction of Subcommittee E17.52 on Traffic Monitoring. Current traffic…
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A revision to an important ASTM nanotechnology standard incorporates a large-scale interlaboratory study that took place in 2008. The revised standard, ASTM E2490 , Guide for Measurement of Particle Size Distribution of Nanomaterials in Suspension by Photon Correlation Spectroscopy (PCS), is under the jurisdiction of Subcommittee E56.02 on Characterization: Physical, Chemical and Toxicological…