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A new ASTM International practice provides a standard for preparing a mixture of cement paste that will simulate the shearing experienced by the cement paste in concrete. The new standard, ASTM C1738 , Practice for High-Shear Mixing of Hydraulic Cement Pastes, was developed by Subcommittee C01.22 on Workability , part of ASTM International Committee C01 on Cement . According to Chiara Ferraris,…
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Movement, shipment and transfer are all words that are commonly used by entities that deal with tangible property. To ensure that these words are being used and understood by all parties involved, ASTM International Committee E53 on Property Management Systems has approved a new standard, ASTM E2671 , Practice for Defining Movements, Shipments and Transfers of Tangible Property. ASTM E2671 was…
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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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High-speed machine tool spindles and the high-pressure turbopumps that move liquid hydrogen in the space shuttle are just two examples of the uses for hybrid roller bearings. ASTM Subcommittee F34.01 on Rolling Element has now developed a standard for hybrid roller bearings, ASTM F2730/F2730M , Specification for Silicon Nitride Cylindrical Bearing Rollers. Subcommittee F34.01 is under the…
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Any organization that owns and uses a variety of equipment must find ways to identify it and track its movement. A new standard and a proposed new standard being developed by ASTM International Committee E53 on Property Management Systems focus on these aspects of equipment ownership. The new ASTM standard, E2606 , Practice for Receipt Notification as a Result of Tangible Property Movement, and…
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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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ASTM International Committee E53 on Property Management Systems has begun developing new standards to address the beginning of a challenging new era for asset managers – the era of lost laptops. Understanding how organizations reached this point – where entities are losing an increasing number of sensitive assets such as computers, some with sensitive information stored in the memory devices – is…
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A new ASTM International standard that covers annular ball bearings intended primarily for use in instrument and precision rotating components has been developed as a conversion of a U.S. military standard, MIL-B-81793F, Annular Ball Bearings, for Instruments and Precision Rotating Components. The new standard, F 2332 , Specification for Annular Ball Bearings for Instruments and Precision…
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Asset budgets are often the third largest line item (after personnel and information technology) for many organizations. Because of this, asset managers in both the public and private sectors need to present compelling arguments and demonstrate strategic value to core missions in framing asset decisions. With this in mind, ASTM International Committee E53 on Property Management Systems has more…
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Anyone who has ever lost time searching for a set of keys that simply are not where they’re supposed to be will appreciate the larger-scale, though similar concept behind E 2499 , Standard Practice for Classification of Equipment Physical Location Information, a new standard developed by ASTM International Committee E 53 on Property Management Systems. The goal of the standard, which is under the…