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Although alkali resistant glass fibers have been commercially available for more than 30 years, there has not been an official standard that clearly defines what is required to make glass fibers resistant to alkali attack without the need for protective coatings. ASTM International Committee C27 on Precast Concrete Products has recently developed such a standard, C 1666/C 1666M , Specification…
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An important standard that is used to help protect the health of workers where there may be occupational exposure to quartz dust has recently been revised. ASTM standard E 1132 , Practice for Health Requirements Relating to Occupational Exposure to Respirable Crystalline Silica, was developed by Subcommittee E34.16 on Silicas, which is under the jurisdiction of Committee E34 on Occupational…
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A proposed new standard being developed by ASTM International Committee B09 on Metal Powders and Metal Powder Products offers a solution to the challenge of handling and characterizing very fine powders. Subcommittee B09.02 on Base Metal Powders is developing the proposed standard, WK13023 , Test Method for Determination of Tap Density of Metallic Powders by a Constant Volume Measuring Method. …
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Ineffective removal of grease from restaurants poses a variety of serious environmental problems. Large quantities of grease in public sanitary sewer systems can cause stoppages of piping networks and create costly and time-consuming problems at treatment plants. Sewer backups resulting from grease can also create health hazards when raw sewage backs up into homes or businesses. While grease…
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Conventionally processed powder metallurgy materials often exhibit open microporosity at the surface. While it is a natural part of the process, this microporosity can affect the measurement of surface finishes. To cover this and other issues that arise from measuring the surface finish of powder metallurgy, ASTM International Committee B09 on Metal Powders and Metal Powder Products has developed…
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A new standard developed by ASTM International Committee E34 on Occupational Health and Safety will provide foundries with a comprehensive set of safety requirements. The standard, E 2349, Practice for Safety Requirements in Metal Casting Operations: Sand Preparation, Molding, and Core Marking; Melting and Pouring; and Cleaning and Finishing, is under the jurisdiction of Subcommittee E34.20 on…
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A proposed new specification currently being developed by ASTM Committee C27 on Precast Concrete Products addresses the issue of watertightness in septic tanks and grease interceptors. The proposed standard, WK7426, Specification for Resilient Connectors Between Reinforced Concrete Tanks and Pipes, is under the jurisdiction of Subcommittee C27.30 on Water and Wastewater Containers. "The entries…