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Three subcommittees of ASTM International Committee D35 on Geosynthetics are currently developing several proposed new standards. The topics covered in the following proposed standards are geosynthetic clay liners, geomembranes, and the development of a mechanistic-empirical design guide for pavements. Committee D35 will meet Jan. 30-Feb. 1, 2008, at the January Committee Week in Tampa, Fla.…, Subcommittee D35.04 on Geosynthetic Clay Liners, Responding to shrinkage issues involving geosynthetic clay liners, Subcommittee D35.04 has launched work on a proposed new standard, WK12239 , Test Method for Linear Dimensional Changes of Restrained Geosynthetic Clay Liners Under Cyclic Temperature and Hydration Conditions. WK12239 is an index test that covers the measurement of changes in linear dimensions of a geosynthetic clay liner that…, Subcommittee D35.10 on Geomembranes, Subcommittee D35.10 is currently developing two proposed new standards, WK14305 , Specification for Non-Reinforced PVC (Polyvinyl Chloride) Geomembrane Seams, and WK14311 , Guide for the Installation of Non-Reinforced Polyvinyl Chloride (PVC) Geomembranes. According to Mark Wolschon, engineers, specification writers, users, suppliers, manufacturers, fabricators and installers of PVC…, Subcommittee D35.01 on Mechanical Properties, There is currently a national movement to develop a mechanistic-empirical design guide for pavements. This initiative requires that the fundamental material properties for all components of the design be quantified. Subcommittee D35.01 is working toward this goal with the development of two proposed new standards, WK14361 , Test Method for Determining Small-Strain Tensile Properties of Geogrids…
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A proposed new standard being developed by ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications would provide the coatings industry with an industry-wide method for evaluating the ability of an architectural paint system to block ink stains from typical markers and writing instruments from bleeding through primer or base-coat into a topcoat. The proposed…
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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 D01 on Paint and Related Coatings is seeking participation from interested parties in developing a proposed new standard, WK12492 , Practice for Rheological Characterization of Architectural Coatings Using Three Common Bench Viscometers. The proposed standard covers a popular industry protocol and includes general guidelines for predicting some coatings performance…
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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, F 2490 , Guide for Aircraft Electrical Load and Power Source Capacity Analysis, has been accepted by the Federal Aviation Administration (FAA) as a means of compliance with 14 CFR 23.1351(a) (2), Electrical System Capacity for Part 23 (and Predecessor) Aircraft. Guide F 2490 was developed by Subcommittee F39.01 on Design, Alteration, and Certification, which is…
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ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications will hold its annual mini-symposium on Jan. 24, 2006, at the Embassy Suites Hotel in Ft. Lauderdale, Fla. The focus of the sessions will be on the role and use of statistics in the development of standard test methods, with emphasis on recent developments. The following three lectures will be given during…, Statistical Requirements Inside and Outside ASTM International, Many coatings and raw material manufacturers have registered to the ISO 9002 standard. That standard has been replaced by ISO 9001:2000, with the requirements for the new standard being more extensive. However, some of the new requirements can be met by using basic statistical techniques. This presentation, which will be given by Robert Morrison, is an overview of the new requirements and compare…, The Use of Ranked vs. Rated Data in the Evaluation of Weathered Specimens or Material, The evaluation of specimens after weathering can be handled by a number of approaches; two of these are rating and ranking. Rating requires one to compare the specimens against a scale (i.e., 1 to 10). Ranking, on the other hand, requires the direct comparison of the specimens against each other. Louis Asher will make this presentation, which will center on these two approaches and will…, ASTM International Interlaboratory Study Program, ASTM International recently approved a new Interlaboratory Study Program. Through this program, ASTM is providing staff support and financial resources to technical committees by offering assistance with the identification of participating laboratories, overseeing the generation of sample distribution, collecting data, and generating precision and bias statements and research reports. This…
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ASTM International Subcommittee D01.23 on Physical Properties of Applied Paint Films has approved three new standards that each deal with different types of measurements for paint coatings. Subcommittee D01.23 is under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications. Titles and descriptions of each new standard follow. , D 6991, Test Method for Internal Stresses in Organic Coatings by Cantilever (Beam) Method, Test Method D 6991 covers the procedure for measuring internal stresses in organic coatings by using the cantilever (beam) method. The test method can be used to determine the internal stresses in coatings after they have cured. Most organic coatings shrink when they cure. This induces an internal stress in the coatings. If the substrate is flexible, such as a vinyl composition tile, and has…, D 7091, Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic, Nonconductive Coatings Applied to Nonferrous Metals, The development of D 7091 is the result of subcommittee discussions on the need to revise or replace D 1186, Test Method for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to a Ferrous Base, and D 1400, Test Method for Nondestructive Measurement of Dry Film Thickness of Nonconductive Coatings Applied to a Nonferrous Metal Base. Rather than revising or…, D 7187, Test Method Measuring Mechanical Aspects of Scratch/Mar Behavior of Paint Coatings by Nanoscratching, Test Method D 7187 determines the resistance to mar and scratch of paint coatings on smooth, flat surfaces. The standard, which had its origin in a paper presented by Li Lin, DuPont, at the 2002 Committee D01 Centennial symposium on new directions in coatings performance technology, is a possible solution to recent searches within the automotive industry for a better way to measure the scratch…
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ASTM International Committee F39 on Normal and Utility Category Airplane Electrical Wiring Systems has approved its first standard, F 2490, Guide for Aircraft Electrical Load and Power Source Capacity Analysis. The new guide covers how to prepare an electrical load analysis to meet Federal Aviation Administration requirements. "This standard is a model for a consistent method of determining the…