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The American Concrete Institute (ACI, formerly National Association of Cement Users or NACU) is a non-profit technical society and standards developing organization. ACI was founded in January 1905 during a convention in Indianapolis. [1] [2] The Institute's headquarters are currently located in Farmington Hills, Michigan, USA. ACI's mission is ...
Whittaker has been engaged in the development of codes, standards and guidelines in the United States since the late 1980s, including the National Earthquake Hazards Reduction Program Recommended Provisions, the American Society of Civil Engineers/Structural Engineering Institute (ASCE/SEI) Standards 4, 7, 41, 43, and 59, and American Concrete Institute (ACI) Code 349.
He was also an original member of the joint ASCE/American Concrete Institute (ACI) committee that formulated provisions for prestressed concrete in the ACI Building Code. Janney was also active in the Prestressed Concrete Institute (PCI), the National Society of Professional Engineers (NSPE) and the American Society for Testing and Materials ...
The American Concrete Institute (ACI) definition of cold weather placement, ACI 306, [128] is: A period when for more than three successive days the average daily air temperature drops below 40 °F (~ 4.5 °C), and; Temperature stays below 50 °F (10 °C) for more than one-half of any 24-hour period.
Mass concrete is defined by American Concrete Institute Committee 207 as "any volume of concrete with dimensions large enough to require that measures be taken to cope with the generation of heat from the hydration of cement and attendant volume change to minimize cracking."
Pages in category "Concrete" The following 200 pages are in this category, out of approximately 221 total. ... American Concrete Institute; Asphalt concrete; B ...
Research into arching or compressive membrane action has continued over the years at Queen's University Belfast, with the work of Niblock, [26] [27] who investigated the effects of CMA in uniformly loaded laterally restrained slabs; Skates, [28] who researched CMA in cellular concrete structures; Ruddle, [29] [30] who researched arching action ...
Portland Cement Association is a non-profit organization that promotes the use of cement and concrete.The organization conducts and sponsors research, [2] participates in setting cement manufacturing standards, [3] [4] and disseminates free designs of concrete-based architectural structures, [5] among other functions.