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ASTM Subcommittee D01.44 on Traffic Coatings has recently approved a new standard, D 7377 , Practice for Evaluating the Water Wash-Off Resistance of Traffic Paints, and is developing a proposed new standard, WK16700 , Practice for the Determination of Drying Rate of Waterborne Pavement Marking Paints Using a Test Chamber. The subcommittee is part of ASTM International Committee D01 on Paint and…, New Practice Measures Paint Resistance to Hard Rain, Hard rain sometimes falls soon after traffic paint has been applied to a road surface. Subcommittee D01.44 developed D 7377 to simulate hard rain conditions to determine the water wash-off resistance of an applied traffic paint film. D 7377 can be used to compare conventional and fast-dry traffic paints as well as the latex binders used in them for their relative ability to withstand heavy rain…, Proposed Standard to Measure Paint Drying Rate, Shay says that the subcommittee welcomes participation from all interested parties, particularly state Department of Transportation staff and liquid traffic paint makers, in all of its activities, including the development of WK16700 , a proposed standard that is designed to conveniently measure the drying rate of waterborne pavement marking paints under practical conditions of high humidity…
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Measuring the thickness of dry coating powders is an important factor in the manufacture of a variety of products. ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications has developed a new standard for this purpose, D 7378 , Practice for Measurement of Thickness of Applied Coating Powders to Predict Cured Thickness. D 7378 is under the jurisdiction of…
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A proposed new standard will provide a practice for inspecting and evaluating the retroreflective properties of longitudinal non-intersection pavement markings. The proposed standard, WK16773 , Practice for Evaluating Retroreflectance of Pavement Markings Using Portable Hand-Operated Instruments, is being developed by Subcommittee D04.38 on Highway Traffic Control Materials, which is part of ASTM…
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While a variety of ASTM International standards currently exist for the testing of thermoplastic pavement marking materials, there has been a need to develop practices that address both the proper sampling methods and the correct way to prepare a sample prior to testing. These needs have recently been met with the approval of two new ASTM standards, D 7307 , Practice for Sampling of Thermoplastic…
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Manufacturers of preservatives and antifouling paints will be able to use a new ASTM International standard to evaluate the quality of their products by comparing biocide leach rates in one formulation against a competitive product or their own products. The new standard, D 6903 , Test Method for Determination of Organic Biocide Release Rate from Antifouling Coatings in Substitute Ocean Water,…
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Interested parties are invited to participate in the ongoing development of a proposed new standard, WK15543 , Test Method for Determining Fatigue Failure of Compacted Asphalt Concrete Subjected to Repeated Flexural Bending. The proposed standard is being developed by Subcommittee D04.26 on Fundamental/Mechanistic Tests, which is part of ASTM International Committee D04 on Road and Paving…
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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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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 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 C24 on Building Seals and Sealants invites interested parties to participate in the development of a proposed new standard that will use photographs to illustrate various types of sealant failures. WK11731 , Guide for Diagnosing Sealant Failure by Comparison to Reference Photographs, is under the jurisdiction of Subcommittee C24.10 on Specifications, Guides and…