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ASTM International Committee C09 on Concrete and Concrete Aggregates is currently developing a proposed standard that addresses bleed stability. ASTM WK28156 , Test Method for Bleed Stability of Cementitious Grout Under Static Pressure, is under the jurisdiction of ASTM International Subcommittee C09.41 on Hydraulic Cement Grouts. When cementitious grouts bleed, mixing water separates from the…, ASTM Committee C09 Next Meeting:, Dec. 6-8, December Committee Week, New Orleans, La., Technical Contact:, Fred Goodwin, BASF Construction Chemicals, Cleveland, Ohio, Phone: 216-839-7009; fred.goodwin@basf.com, ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8648
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Members of ASTM Committees C09 on Concrete and Concrete Aggregates and C01 on Cement, as well as other interested parties, are invited to join new Subcommittee C09.50 on Risk Management for Alkali Aggregate Reactions. The new subcommittee will develop standards on the mitigation of deleterious alkali-aggregate reactions in concrete. To initiate the launch of C09.50, Committees C01 and C09 are the…
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ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications, has approved two new standards that cover architectural coating touch-up properties and ink stainblocking of paint systems. Both new standards are under the jurisdiction of Subcommittee D01.42 on Architectural Coatings., Touch-Up Properties, When a home is being constructed, paints are subjected to a wide variety of drying conditions, which can lead to differences in appearance between the original coat and subsequent touch-up areas after the paint has fully cured. A new standard, ASTM D7489 , Practice for Evaluating Touch-Up Properties of Architectural Coatings Under Various Environmental Conditions, covers variations in color,…, Ink Stainblocking, Paint companies and raw material suppliers will be able to use a new ASTM standard to assess the capability of architectural coatings for blocking ink stains from bleeding through to a topcoat. The standard, ASTM D7514 , Test Method for Evaluating Ink Stainblocking of Architectural Paint Systems by Visual Assessment, represents a compilation and synthesis of methods that are currently being used…
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Subjects Include Aggregate Resistivity, Lightweight Aggregates, Methacrylate Bonding Systems and Semi-Adiabatic Calorimetry The following four proposed new standards are among those currently being developed by subcommittees under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates. Subject matter covered by these standards includes aggregate resistivity, lightweight…
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Traffic paint plays an important role in maintaining the safety of roads. Subcommittee D01.44 on Traffic Coatings, part of ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications, is currently working on two proposed new standards covering the sampling of waterborne traffic paint and glass bead gradation measurement., WATERBORNE TRAFFIC PAINT, Ensuring that traffic paint taken from the field is tested properly in laboratories is a concern of paint suppliers as well as private testing laboratories, Department of Transportation labs, DOT striping crews and striping contractors. A proposed new ASTM standard, ASTM WK22312 , Practice for Drum and Tote Sampling of Waterborne Traffic Paint, addresses laboratory sampling issues. According to…, GRADATION OF GLASS BEADS, Glass beads added to traffic paint during manufacturing are necessary to ensure paint retroreflectivity, especially at night. A proposed new standard, ASTM WK23758 , Test Method for Measuring Gradation of Glass Beads Using a Flowing Stream Digital Image Analyzer, will be useful in the production and quality control of glass beads. “Digital camera technology combined with high speed computers has…
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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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More effective quality testing of the synthetic, hollow filaments that are often used in the manufacture of lower cost paintbrushes is the purpose of a new standard approved by ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications. The new standard, ASTM D7233 , Test Method for Testing Fracture of Level Paintbrush Filaments, was developed by Subcommittee D01.…
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The wettability of a particular solid coating, substrate or pigment on a surface is a key to its effectiveness, as wetting is important to adhesion as well as to the prevention of surface defects such as craters, dewetting and crawling. A new ASTM International standard uses contact angle measurements to determine the wettability of coatings. The new standard, D7490 , Test Method for Measurement…