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Two new standards have recently been approved by ASTM International Committee D04 on Road and Paving Materials. The standards, both of which are under the jurisdiction of Subcommittee D04.26 on Fundamental/Mechanistic Tests, are D 6931 , Test Method for Indirect Tensile (IDT) Strength of Bituminous Mixtures, and D 7312 , Test Method for Determining the Permanent Shear Strain and Complex Shear…, ASTM D 6931, Test Method for Indirect Tensile (IDT) Strength of Bituminous Mixtures, The withdrawal of D 4123 , Test Method for Indirect Tension Test for Resilient Modulus of Bituminous Mixtures, led to the development of D 6931 , since D 4123 contained a description of an indirect tensile strength test that was referred to in several other standards. It was decided to develop this test into a completely separate standard, D 6931, to stand on its own merit as a method that…, ASTM D 7312, Test Method for Determining the Permanent Shear Strain and Complex Shear Modulus of Asphalt Mixtures Using the Superpave Shear Tester (SST), According to Rebecca McDaniel, technical director, North Central Superpave Center, and leader of the D 7312 task group, Superpave is a system for designing asphalt mixtures to ensure that the right asphalt binder and aggregate structure is used for the traffic and climate where it will be placed on the road. To facilitate the implementation of Superpave, the Federal Highway Administration…
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ASTM International Committee D35 on Geosynthetics is currently developing a proposed new standard that covers the test procedure for evaluating the effectiveness of prefabricated vertical drains to enhance the consolidation of soils under specified conditions. The proposed standard, WK13402 , Test Method for Large Scale Consolidation Test for Prefabricated Vertical Drains, is under the…
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The increased use of geomembranes as barrier materials to restrict liquid migration from one location to another created a need for a test method to evaluate the quality of geomembrane seams produced by tape methods. ASTM International Committee D35 on Geosynthetics has met this need with the approval of the new standard D 7272 , Test Method for Determining the Integrity of Seams Used in Joining…
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ASTM International Committee D35 on Geosynthetics has developed a new standard that is an important step toward the improvement of filtration design for non-woven geotextiles. The standard, D 7178 , Practice for Determining the Number of Constrictions “, m, ” of Non-Woven Geotextiles as a Complementary Filtration Property, will provide engineers and researchers a common basis for accurate determination of an important products property. Practice D 7178 is under the jurisdiction of Subcommittee D35.03 on Permeability and Filtration. Practice D 7178 describes the procedure used along with existing test methods to determine the number of…
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A new ASTM International standard will provide paving contactors and producers with instructions for preparing cold mix asphalt samples for testing. The standard, D 7229 , Test Method for Preparation and Determination of the Bulk Specific Gravity of Dense-Graded Cold Mix Asphalt (CMA) Specimens by Means of the Superpave Gyratory Compactor, was developed by Subcommittee D04.27 on Cold Mix Asphalts…
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The rapid growth and variety of rides being developed within the water park industry has created a need for new standards to regulate the design and installation of water slides. While individual states within the United States had created rules and guidelines for water slides, these often varied greatly from each other. A new standard developed by ASTM International Committee F24 on Amusement…
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ASTM Committee D35 on Geosynthetics will present a workshop on the possibility of creating a Geogrid Aperture Stability standard during the June Committee Week in Reno, Nev. The workshop will take place June 15 from 6:00 p.m. to 7:30 p.m. Steve Valero, Vice President - Technology, Tensar, will chair the workshop. Valero promises a productive and lively workshop that will be focused on educating…
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ASTM International Committee F24 on Amusement Rides and Devices currently has the following new proposed standards under development:, WK526 Netting, Subcommittee F24.24 on Design and Manufacture is currently developing WK526, Practice for Design, Manufacture, Installation and Testing of Climbing Nets and Netting/Mesh Used in Childrens Play Areas, Safety and Attractions. The purpose of the proposed standard is to reduce life-threatening and debilitating injuries associated with netted areas and attractions. "The amusement industry needed…, WK529 Water Slide Structures, Safety is at the heart of proposed new standard WK529, Guide for Classification, Design, Manufacture, Construction, and Operation of Water Slide Structures. The proposed standard, which is under the jurisdiction of Subcommittee F24.70 on Water Related Amusement Rides and Devices, will apply to water slides installed in public places such as water parks, hotels, resorts, and amusement parks.…, WK1074 Interactive Aquatic Play Equipment, In addition to WK529, Subcommittee F24.70 is also working on proposed new standard WK1074, Practice for Manufacture, Construction, Operations, Maintenance, and Water Quality of Interactive Aquatic Play Equipment. The proposed standard applies to interactive aquatic play equipment located in and around re-circulated and potable water, including swimming pools, activity pools, wave pools, lazy…