Search
Advanced search
Filter by category
Filter by committee
Search results
-
A large and diverse set of manufactured materials are in powdered form at one stage or another. No matter what the material is, from cement to metered dose inhaler ingredients, product performance is related to particle size distribution. “The strength of concrete is related to the fineness of the cement powder used, but the danger with very fine grades is excessive heating on setting,” says…, ASTM Committee E29 Next Meeting:, Oct. 6-7, 2014, October Committee Week, New Orleans, La., Technical Contact:, Alan F. Rawle, Ph.D., Malvern Instruments, Westborough, Mass., Phone: 508-768-6434; alan.rawle@malvern.com , ASTM Staff Contact:, Katerina Koperna, Phone: 610-832-9728; kkoperna@astm.org , ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9576
-
A newly revised ASTM terminology standard reflects the latest technological advances in particle size analysis (standard test sieves) and particle separation (screening media). ASTM E1638 , Terminology Relating to Sieves, Sieving Methods and Screening Media, was developed by Subcommittee E29.01 on Sieves, Sieving Methods and Screening Media , part of ASTM International Committee E29 on Particle…, ASTM Committee E29 Next Meeting:, May 1-2, 2013, in conjunction with B09 May meeting, Ft. Lauderdale Beach, Fla., Technical Contact:, Kenneth H. Beyer, American Wire Cloth Institute, Elizabeth, N.J., Phone: 908-688-4600; ken@uniquewire.com, ASTM Staff Contact:, Katerina Koperna, Phone: 610-832-9728; kkoperna@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9290
-
Current members of ASTM International Committees C01 on Cement and C09 on Concrete and Concrete Aggregates , and other interested parties, are invited to join a new C01 subcommittee, C01.98 on Sustainability Assessment. The scope of C01.98 is to support the development and maintenance of standards related to methodologies and metrics for assessing sustainability in the manufacture and use of…
-
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,…
-
A new ASTM International standard covers a special grade of industrial woven wire cloth called filter cloth for general filtration, including the separation of solids from fluids. ASTM E2814 , Guide for Industrial Woven Wire Filter Cloth, was developed by Subcommittee E29.01 on Sieves, Sieving Methods and Screening Media , part of ASTM International Committee E29 on Particle and Spray…, ASTM Committee E29 Next Meeting:, Oct. 31-Nov. 1, 2011, October Committee Week, Tampa, Fla., Technical Contact:, Ken Beyer, Unique Wire Weaving Co., Hillside, N.J., Phone: 908-688-4600; ken@uniquewire.com, ASTM Staff Contact:, Christine Sierk, Phone: 610-832-9728; csierk@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8934
-
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…
-
ASTM International Committee E29 on Particle and Spray Characterization has recently approved an extensive revision of ASTM standard E11 , Specification for Wire Cloth and Sieves for Testing Purposes. The revision will lead to better control of the quality of sieve cloths and test sieves. ASTM E11 is under the jurisdiction of Subcommittee E29.01 on Sieves, Sieving Methods and Screening Media.…
-
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…
-
Sieve manufacturers produce testing sieves using various sizes of wire cloth, per ASTM International standard E 11, Specification for Wire Cloth and Sieves for Testing Purposes. They also use ASTM standards E 161, Specification for Precision Electroformed Sieves, and E 323, Specification for Perforated-Plate Sieves for Testing Purposes when producing sieves from perforated plate. These…
-
After a 35-year-absence, the natural cement industry is being revived and, along with it, a long-withdrawn ASTM International standard. Until it closed in 1970, the Century Cement Company in Rosendale, N.Y. was the last company to manufacture natural cement. Up to that point, Rosendale had been the center of the industry, the source of more than half of all natural cement produced in the U.S.…