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A proposed revision to ASTM International standard ASTM D5456 , Specification for Evaluation of Structural Composite Lumber Products, would add bamboo as a fiber material that can be used in the manufacture of products covered in the standard. ASTM D5456 is under the jurisdiction of Subcommittee D07.02 on Lumber and Engineered Wood Products, part of ASTM International Committee D07 on Wood. ASTM…
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Rapid hardening hydraulic cements are used in a variety of applications in which reduced cementitious contents are desired or early service is needed. Included among these applications are paving, construction, stucco, mortar and block. A newly approved ASTM International standard covering these cements, ASTM C1600/C1600M , Specification for Rapid Hardening Hydraulic Cement, has been developed by…, Type URH, —ultra rapid hardening, for use where ultra high early strength is desired;, Type VRH, —very rapid hardening, for use where very high early strength is desired;, Type MRH, —medium rapid hardening, for use where mid-range rapid hardening, high early strength is desired; and, Type GRH, —general rapid hardening, for use when the higher strength properties of Type VRH or a Type MRH cement is not required. “ASTM C1600 lists minimum requirements for compressive strength, setting time, shrinkage and soundness (autoclave expansion),” says Hicks. “Optional specifications for sulfate expansion, alkali silicate reactions with aggregates, heat of hydration and expansion in water are also…
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New ASTM Committee E58 to Develop Standards That Support Engineering Investigations and Assist the Court, ASTM International, one of the largest voluntary standards development organizations (SDO) in the world, today announced the formation of ASTM Committee E58 on Forensic Engineering . Committee E58 will develop standards that promote awareness of the scientific, engineering, ethical and legal considerations inherent in forensic engineering investigations, reporting and testimony., Bringing Engineering Reason to the Dispute Resolution Process, Forensic engineering focuses on the investigation of alleged defects in materials, products, structures and components. These cases are litigated on the premise that the defects cause personal injury or damage to property. Forensic engineering investigations may help determine the causes of these events and assist the disputing parties or the court in resolving the case. Today, forensic…, Assisting the Court through Consensus Standards, ASTM Committee E58 comes together to create important standards and guides that will support the judicial process by facilitating an improved understanding of forensic engineering practices and associated technical issues. This will better enable the court to resolve disputes in a more well-informed and efficient manner, relying on deeper knowledge of the technical data presented and the sound…, E58 Standards: Guiding Forensic Engineering Practice, E58 standards will help guide forensic engineers in conducting investigations in a robust manner while protecting overall public safety. The initial scope of Committee E58 activities will be driven by subcommittees on Product Defect Incidents, Vehicular Incidents, Electrical Incidents and Industrial Processes. ASTM Committee E58 will build upon the body of work of former subcommittee E30.05 on…, Foundation Standard for the Forensic Engineering Profession, Other E58 standards will bolster the role of forensic engineering professionals in the eyes of the court and other users of these services. Consistent with this objective, Committee E58 has recently drafted a general practice document for the forensic engineering profession, titled Standard Guide for the Practice of Forensic Engineering. The goal of this standard is to further educate the court…
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A recently approved revision to ASTM International standard C 150 , Specification for Portland Cement, includes three significant technical changes to the document. The changes are part of a joint effort between ASTM and the American Association of State and Highway and Transportation Officials to harmonize C 150 with AASHTO’s standard, M 85, Specification for Portland Cement. C 150 is under the…
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A new ASTM International subcommittee, D07.08 on Forests, is now soliciting all interested stakeholders to assist in the development of a proposed new guide for forest management systems. The purpose of the subcommittee, under the jurisdiction of ASTM International Committee D07 on Wood, is to promote knowledge, stimulate research and develop standards pertaining specifically to forests. Industry…
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A recently approved ASTM International standard recognizes new state of the art technology for reinforcing glued laminated timber beams. The standard, D 7199 , Practice for Establishing Characteristic Values for Reinforced Glued Laminated Timber (Glulam) Beams Using Mechanics-Based Models, was developed by Subcommittee D07.02 on Lumber and Engineered Wood Products, under the jurisdiction of ASTM…
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ASTM International Committee D07 on Wood is seeking participation in the development of a proposed new specification that establishes engineering design values for wood and natural fiber-polymer composites. As the performance of these composites improves, more sophisticated engineering applications will become available to this class of materials. Engineering design values will enhance their…
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After a 35-year-absence, the natural cement industry is being revived and, along with it, a long-withdrawn ASTM International standard. Until it closed in 1970, the Century Cement Company in Rosendale, N.Y. was the last company to manufacture natural cement. Up to that point, Rosendale had been the center of the industry, the source of more than half of all natural cement produced in the U.S.…
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A new test method developed by ASTM International Committee C01 on Cement provides information about the behavior of cement that can be used in the process of selecting cementing materials for specific applications. The standard, C 1608, Test Method for Chemical Shrinkage of Hydraulic Cement Pastes, is under the jurisdiction of Subcommittee C01.31 on Volume Change. Test Method C 1608 was…
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", Performance of Structural Wood Adhesives: Issues Related to the ASTM Standards on Engineered Wood Products" is the subject of a workshop being sponsored by ASTM International Committee D07 on Wood. The workshop will be held from 1:30-4:30 p.m. on Oct. 18, as part of the ASTM October Committee Week in Dallas, Texas. For those interested, a joint meeting of Subcommittee D07.02 on Lumber and…