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,…
-
Jim Seay, chairman of ASTM International Committee F24 on Amusement Rides and Devices, and president of attractions provider Premier Rides, delivered the opening educational session at the 2010 International Association of Amusement Parks' (IAAPA) Asian Attraction Expo held at the Kuala Lumpur Convention Center in Malaysia July 13-16. Seay's presentation was part of an all day IAAPA Safety…
-
Committee F24 Announces New Canadian Standard, More than 100 attendees, including representatives from eight countries as far away as New Zealand, participated in a meeting in Toronto, Canada, held by ASTM International Committee F24 on Amusement Rides and Devices from October 15 to 17. The event encompassed nearly 40 technical meetings to review existing standards as well as new standards in development. A broad spectrum of issues from…
-
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 popularity of water-based amusement parks continues to grow throughout the world, and this growth has led to an emerging need for standards for the aquatic play equipment industry. ASTM International Committee F24 on Amusement Rides and Devices answers this need with a newly approved standard, ASTM F2461 , Practice for Manufacture, Construction, Operation and Maintenance of Aquatic Play…
-
Caitlin M. Augustin, in her third year at the University of Miami and a student member of ASTM, will be sponsored by ASTM International in the 2009 Washington Internships for Students of Engineering program. Augustin is studying industrial engineering with a research focus on renewable energies and sustainable technologies, particularly solar technology design and implementation. Augustin has…
-
Netting is a vital part of many amusement park and playground attractions. Recognizing this, Subcommittee F24.24 on Design and Manufacture has developed a new standard, ASTM F2375 , Practice for Design, Manufacture, Installation and Testing of Climbing Nets and Netting/Mesh Used in Amusement Rides, Devices, Play Areas and Attractions. Subcommittee F24.24 is part of ASTM Internationa l Committee…
-
Honeycomb ceramics, porous with linear hollow channels, are being used worldwide in automotive catalytic converters and as diesel particulate filters for trucks. Flexural testing of this type of ceramics is addressed in a new ASTM International standard, ASTM C1674 , Test Method for Flexural Strength of Advanced Ceramics with Engineered Porosity (Honeycomb Cellular Channels) at Ambient…
-
New Advanced Ceramics Standards from ASTM Cover Fracture Mirror Size Analysis, Tensile Strength DataSubcommittee C28.01 on Mechanical Properties and Performance, part of ASTM International Committee C28 on Advanced Ceramics, has recently approved two new standards, ASTM C1678 , Practice for Fractographic Analysis of Fracture Mirror Sizes in Ceramics and Glasses, and ASTM C1683 , Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics., ASTM C1678 —Bringing Consistency to Fracture Mirror Size Analysis, Fracture mirror size analysis is a powerful quantitative tool for the interpretation of broken ceramic and glass articles. While this type of analysis can be used to determine the stress in a part at the instant of fracture, inspection and interpretation procedures have often varied, resulting in uncertainty in stress estimates. ASTM C1678, Practice for Fractographic Analysis of Fracture Mirror…, ASTM C1683 —Scaling Strength Values, ASTM C1683, Practice for Size Scaling of Tensile Strength Using Weibull Statistics for Advanced Ceramics, provides methodology to convert fracture strength parameters estimated from data obtained with one test geometry to strength parameters representing other test geometries. Stephen Duffy, chair of civil engineering, Cleveland State University, and C28 member, says that companies producing…
-
Ceramic and glass companies, as well as universities and government laboratories, will be the primary users of a new ASTM standard that allows for the flexural strength determination of components made in a round shape or after finish machining with minimal waste. The standard, ASTM C1684 , Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature-Cylindrical Rod Strength, was…