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Technical Bulletin 10-003 ACI 207.1R-05 Guide to Mass Concrete Mass Concrete: ACI 116R defines mass concrete as “any volume of concrete with dimensions large enough to require that measures be taken to cope with generation of heat from hydration of the cement and attendant volume change to minimize cracking.” The ACI 207.1R-05 Guide to Mass Concrete (see Attached goes over the history, materials, proportioning, properties, construction, methods, and equipment for mass concrete practices. Reference: www.concrete.org U:\Technical Bulletins\Tech Bulletin 10-003 Mass Concrete Guide.doc