The U.S. Department of Commerce’s National Institute of Standards and Technology (NIST) has named members of a technical team investigating the June 24, 2021 partial collapse of the reinforced concrete Champlain Towers South condominium in Surfside, Fla. Progressive column and slab failure took the lives of 96. Cornell University Professor of Civil Engineering Kenneth Hover and ACI Committee 318 Immediate…
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Keen on lower carbon alternatives to portland cement-only binders, the U.S. Department of Commerce’s National Institute of Standards and Technology has published Technical Note 1906, Minimizing Paste Content in Concrete Using Limestone Powders — Demonstration Mixtures. Researchers cite target performance levels in concrete mixtures with up to 28 percent lower portland cement content using a binary blend with limestone powder.
Read MoreSource: ASTM International, West Conshohocken, Pa.
ASTM Committee E60 on Sustainability has developed E3012, Guide for Characterizing Environmental Aspects of Manufacturing Process, to help businesses incorporate sustainable practices and transition into science-based modeling, decision-making and production.
Read MoreSources: National Institute of Standards and Technology (NIST), Gaithersburg, Md.; CP staff
Keen on lower carbon alternatives to portland cement-only binders, the U.S. Department of Commerce-backed NIST has published Technical Note 1906, Minimizing Paste Content in Concrete Using Limestone Powders – Demonstration Mixtures. Researchers cite target performance levels in concrete mixtures with up to 28 percent lower portland cement content using a binary blend with limestone powder.
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Protecting schools and their associated high-occupancy buildings from violent tornadoes is the goal of the first approved building code changes based on recommendations from the National Institute of Standards and Technology (NIST) technical investigation into the impacts of the May 2011 tornado that devestated Joplin, Mo.
Sources: ASTM International, West Conshohocken, Pa.; CP staff
The proposed ASTM WK50586, Practice for Measuring the Electrical Resistance of Fresh Concrete standard will show how to sample a load, prepare a mix specimen for evaluation and conduct measurements—the latter yielding information on water-cement ratio, initial setting time, compressive strength, and overall concrete quality.
Read MoreSource: National Institute of Building Sciences (NIBS), Washington, D.C.
The NIBS 2013 report, Moving Forward: Findings and Recommendations from the Consultive Council, spans five key areas: The Building Workforce; Guidance on the Use of Non-Potable Water; Understanding the Energy/Water Nexus; Supporting the Existing State and Local Building Regulatory Infrastructure; and, Developing the Business Case for Private Sector Investment in Hazard Mitigation. Among recommendations in the eight-page document:
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