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Subjects Include Vented Construction Systems, Furnace Exposure and Tunnel Fire Resistance, Subcommittee E05.11 on Fire Resistance, part of ASTM International Committee E05 on Fire Standards, is currently developing a number of proposed standards, including the following three test methods on vented construction systems, furnace exposure on test samples and tunnel fire resistance. All parties interested in working on fire resistance standards are encouraged to join in the activities of…, Vented Construction, Understanding how construction systems will perform in the earliest moments of a fire is crucial. A proposed new ASTM standard, WK22660 , Test Method for Evaluating Fire Performance of Vented Construction, will provide tests for evidence on how vented construction systems are affected by the first five minutes of a fire and will be used to complement existing fire testing methods test results “…, Furnace Exposure, Fire test laboratories and fire protection engineers will be the primary users of proposed new standard ASTM WK23795 , Test Method for Measuring the Uniformity of Furnace Exposure on Test Samples. The proposed standard provides general principles for measuring the uniformity of furnace exposure on samples tested in accordance with the following standards: - ASTM E119 , Test Methods for Fire…, Tunnel Fire Resistance, Fires in tunnels can reach temperatures as high as 2,500°F [1371°C], but current standards that deal with building fires provide for a maximum temperature of 2,000°F [1093°C] and are not specific to tunnels. A proposed new standard, ASTM WK23821 , Test Methods for Tunnel Fire Resistance, will be developed with the special considerations of tunnel fires in mind. According to Barry Badders, manager…
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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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The U.S. Environmental Protection Agency has determined that the 2008 revision to an ASTM International standard describing the environmental assessment needs of parties involved in the acquisition of forestland and rural properties is now compliant with the agency’s All Appropriate Inquiries Rule (40 CFR Part 312, Standards and Practices for All Appropriate Inquires). The EPA decision came in a…
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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 ASTM standard that describes the environmental assessment needs of parties involved in the acquisition of forestland and rural property has been revised. The revision is an important step toward making ASTM E2247 , Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process for Forestland or Rural Property, compliant with the U.S. Environmental Protection Agency…
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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…
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Vapor intrusion from contaminated soil and groundwater into structures can potentially create significant liability and have a material impact on property value. Because of this, accurately determining whether a property has vapor intrusion issues is a concern for property owners, prospective purchasers and environmental professionals conducting due diligence. ASTM International Committee E50 on…