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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…
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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…
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ASTM Pervious Concrete Subcommittee Developing Proposed Standard for Sustainable Mixture ProportionsOnce approved, a proposed new ASTM standard will aid concrete producers in developing sustainable and durable mixture proportions for pervious concrete. The proposed new standard, WK23367 , Test Method for Evaluating the Surface Durability Potential of a Pervious Concrete Mixture, is being developed by Subcommittee C09.49 on Pervious Concrete, part of ASTM International Committee C09 on Concrete…
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A proposed new ASTM International standard, ASTM WK22233 , Test Method for Indication of Concrete’s Ionic Conductivity, describes a five-minute nondestructive test that has the potential to replace a destructive six-hour test requiring several hours of preparation time. The proposed standard is being developed by Subcommittee C09.66 on Concrete’s Resistance to Fluid Penetration, part of ASTM…
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Shrinkage that occurs during the drying process is a major cause of cracking in concrete. However, application of shrinkage-reducing admixtures in the field has been yielding positive results, and engineers have realized that admixtures can mitigate cracking. A new ASTM standard currently being developed by Subcommittee C09.23 on Chemical Admixtures will set minimum standards for an admixture to…
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ASTM International Committee A05 on Metallic-Coated Iron and Steel Products has approved a new standard, ASTM A1059/A1059M , Specification for Zinc Alloy Thermo-Diffusion Coatings (TDC) on Steel Fasteners, Hardware and Other Products. The new standard is under the jurisdiction of Subcommittee A05.13 on Structural Shapes and Hardware Specifications. The technology described in ASTM A1059/A1059M…
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Galvanized steel products are manufactured and used throughout the world. A new ASTM International standard, A1057/A1057M , Specification for Steel, Structural Tubing, Cold Formed, Welded, Carbon, Zinc-Coated (Galvanized) by the Hot-Dip Process, addresses the galvanizing process as it is used across a variety of industries, including construction, automotive and transportation. The new standard…
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Because of its porous nature, pervious concrete cannot be tested using standards developed for traditional concrete. In order to fill this need, ASTM International Committee C09 on Concrete and Concrete Aggregates is developing a series of proposed test methods specific to pervious. The first of these proposed standards, ASTM C1688/C1688M , Test Method for Density and Void Content of Freshly…
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Two new calibration standards for use with X-ray fluorescence equipment in the chemical analysis of hydraulic cement are now available from the Cement and Concrete Reference Laboratory (CCRL). The new standards are designated Portland Cements 167 and 168 and are vacuum-sealed to prevent moisture uptake. Robin Haupt, supervisor, CCRL proficiency sample program, says that the two new cements were…
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The realization that concrete production is the result of a combination of several materials that are individually standardized, but which may interact in ways not governed by those standards, led ASTM International Committee C09 on Concrete and Concrete Aggregates to form Subcommittee C09.48 on Performance of Cementitious Materials and Admixture Combinations in 2004. The subcommittee has now…