Search
Advanced search
Filter by category
Filter by committee
Search results
-
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,…
-
Rheologists are encouraged to join in the development of a proposed new practice that will help standardize calibration of rotational rheometers to obtain accurate normal force measurements. ASTM WK33687 , Practice for Normal Force Calibration for Rotational Rheometers, is being developed by Subcommittee E37.08 on Rheology , part of ASTM International Committee E37 on Thermal Measurements . The…, ASTM Committee E37 Next Meeting:, Aug. 10-11, in conjunction with the North American Thermal Analysis Society Annual Conference, Des Moines, Iowa, Technical Contact:, Kenneth Aniunioh, Shimadzu Scientific Instruments, Laurel, Md., Phone: 864-633-7690; kenebaano@yahoo.com, 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 #8923
-
New regulations set forth by the U.S. Environmental Protection Agency to mandate greenhouse gas reporting in the U.S. carbon black industry have led to the development of a new ASTM International standard, ASTM D7662 , Test Method for Carbon Content in Carbon Black Feedstock Oils. ASTM D7662 is under the jurisdiction of Subcommittee D24.66 on Environment, Health and Safety, part of ASTM…
-
The U.S. Environmental Protection Agency has set forth new regulations that mandate greenhouse gas reporting in the U.S. carbon black industry. These regulations were the impetus for the development of a new ASTM International standard, ASTM D7633 , Test Method for Carbon Black Carbon Content. The new standard was developed by Subcommittee D24.66 on Environment, Health and Safety, part of ASTM…, ASTM Committee D24 Next Meeting:, Dec. 6-8, December Committee Week, New Orleans, La., Technical Contact:, George Joyce, Columbian Chemicals Co., Marietta, Ga., Phone: 770-792-9467; gjoyce@columbianchemicals.com, ASTM Staff Contact:, Joe Koury, Phone: 610-832-9804; jkoury@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8641
-
An increased interest in the polyaromatic hydrocarbon content of carbon black, particularly in Europe, and new U.S. Environmental Protection Agency requirements to report greenhouse gas emissions from U.S. industry including carbon black plants has led to the formation of a new ASTM subcommittee. Subcommittee D24.66 on Environment, Health and Safety is part of ASTM International Committee D24 on…
-
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…
-
The ASTM International Proficiency Testing Center is pleased to offer a 2010 Proficiency Testing Program on Thermal Analyses of Plastics (TAP) to laboratories who need a statistical quality assurance tool that will enable them to improve and maintain a high level of performance in conducting ASTM Differential Scanning Calorimetry (DSC), Oxidative-Induction Time (OIT) by Differential Scanning…, ASTM D3418, , Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry (DSC);, ASTM D3850, , Standard Test Method for Rapid Thermal Degradation of Solid Electrical Insulating Materials By Thermogravimetric Method (TGA); and, ASTM D3895, , Standard Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry. For each test trial, laboratory participants receive two sample materials along with interactive electronic data report forms and test instructions. Using the specified ASTM program tests, participating laboratories conduct the tests of their choice that they routinely run. Upon completion of…
-
A recently approved revision to ASTM International standard C 150 , Specification for Portland Cement, includes three significant technical changes to the document. The changes are part of a joint effort between ASTM and the American Association of State and Highway and Transportation Officials to harmonize C 150 with AASHTO’s standard, M 85, Specification for Portland Cement. C 150 is under the…
-
A need for a new test method to determine the effective thermal conductivity of fire resistive materials at high temperatures has prompted ASTM International Committee E37 on Thermal Measurements to begin work on a proposed new standard, WK12643 , Test Method for Slug Calorimetry. The proposed standard is under the jurisdiction of Subcommittee E37.05 on Thermophysical Properties. According to…
-
ASTM International Committee E37 on Thermal Measurements is seeking participation in a new subcommittee, E37.09 on Biological Calorimetry. Since its inception, the focus of Committee E37 has been the creation of methods for the calibration and use of thermal analysis instrumentation. One of the first types of thermal analysis instruments that was developed commercially on a large scale was…