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A new ASTM International practice provides a standard for preparing a mixture of cement paste that will simulate the shearing experienced by the cement paste in concrete. The new standard, ASTM C1738 , Practice for High-Shear Mixing of Hydraulic Cement Pastes, was developed by Subcommittee C01.22 on Workability , part of ASTM International Committee C01 on Cement . According to Chiara Ferraris,…
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Discovering how differences between two versions of a product will affect that product’s performance continues to be a challenge for sensory professionals. However, in the past 30 years, the testing method known as the Tetrad test has begun to emerge as a means of saving companies money by enabling more information to be extracted from smaller product tests. ASTM International Committee E18 on…, ASTM Committee E18 Next Meeting:, Nov. 1-4, 2011, October Committee Week, Tampa, Fla., Technical Contact:, John M. Ennis, The Institute for Perception, Richmond, Va., Phone: 804-675-2980; john.m.ennis@ifpress.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 #8898
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The proper selection of assessors can have a direct effect on the outcome of any sensory or consumer test. A proposed new ASTM International standard will help users determine appropriate assessors, give general guidelines for ways to select and recruit respondents, and list the benefits and drawbacks in selecting certain assessors. The proposed new standard, ASTM WK30847 , Guide for Selection of…
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Product selection is an important, though sometimes neglected, part of the consumer testing process. A proposed new ASTM standard will offer guidelines to bring clarity to this process. The proposed standard, ASTM WK30844 , Guide for Sampling of Product for Evaluation, is being developed by Subcommittee E18.04 on Fundamentals of Sensory, part of ASTM International Committee E18 on Sensory…, ASTM Committee E18 Next Meeting:, April 12-14, 2011, April Committee Week, Anaheim, Calif., Technical Contact:, Julie Boutaghou, Boutaghou LLC, North Oaks, Minn., Phone: 651-788-5550; j ulieboutaghou@msn.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 #8751
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A proposed new ASTM International standard will help consumer goods developers and manufacturers in the evaluation of their products to ensure product quality, consumer satisfaction and marketing success. The proposed standard, ASTM WK29225 , Guide for Design and Execution of Sensory-Instrumental Correlation Studies, is being developed by a task group of Subcommittee E18.03 on Sensory Theory and…
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Rapid hardening hydraulic cements are used in a variety of applications in which reduced cementitious contents are desired or early service is needed. Included among these applications are paving, construction, stucco, mortar and block. A newly approved ASTM International standard covering these cements, ASTM C1600/C1600M , Specification for Rapid Hardening Hydraulic Cement, has been developed by…, Type URH, —ultra rapid hardening, for use where ultra high early strength is desired;, Type VRH, —very rapid hardening, for use where very high early strength is desired;, Type MRH, —medium rapid hardening, for use where mid-range rapid hardening, high early strength is desired; and, Type GRH, —general rapid hardening, for use when the higher strength properties of Type VRH or a Type MRH cement is not required. “ASTM C1600 lists minimum requirements for compressive strength, setting time, shrinkage and soundness (autoclave expansion),” says Hicks. “Optional specifications for sulfate expansion, alkali silicate reactions with aggregates, heat of hydration and expansion in water are also…
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Many products can come in contact with drinking water during various stages of its treatment and delivery. This contact can have taste and odor implications that will be addressed in a proposed new ASTM International standard, WK21784 , Practice for Assessing Flavor of Drinking Water. Subcommittee E18.06 on Food and Beverage Evaluation, a part of ASTM International Committee E18 on Sensory…
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No industry standard currently exists that addresses the vacuum sealing requirements of knife-edged flanges for high vacuum applications. Existing international standards focus on interchangeability of the hardware, but do not address the reliability of the seal. ASTM International Committee E42 on Surface Analysis is now working on a proposed standard on the subject, WK21206 , Specification…
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A 2002 workshop on galling wear held by ASTM International Committee G02 on Wear and Erosion provided the impetus for the development of a new standard, ASTM G196 , Test Method for Galling Resistance of Material Couples. The new standard is under the jurisdiction of Subcommittee G02.40 on Non-Abrasive Wear. According to Scott Hummel, Ph.D., associate professor, head of the department of…
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ASTM International Committee E18 on Sensory Evaluation of Materials and Products is working on a proposed new standard that will provide sensory professionals with guidelines for developing, selecting and using scales in the context of sensory experiments and consumer research. WK19660 , Guide for Developing and Using Appropriate Scales, is being developed by Subcommittee E18.04 on Fundamentals…