ACI 211.1-91 Standard Practice for Selecting Proportions for Normal, Heavyweight, And Mass Concrete

This document has been approved for use by agen- cies of the Department of Defense and for listing in ACI 211.1-91 the DaD Index of Specifications and Standards. (Reapproved 2002) Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete (ACI 211.1-91) Reported by ACI Committee 211 Donald E. Dixon, Jack R. Prestrera, George R. U. Burg," Chairman Secretary Chairman, Subcommittee A Edward A. Abdun-Nur" David A. Crocker Mark A. Mearing George B. Southworth Stanley G. Barton Kenneth W. Day Richard C. Meininger" Alfred B. Spamer Leonard W. Bell" Calvin L. Dodl Richard W. Narva Paul R. Stodola Stanley J. BIas, Jr. Thomas A. Fox Leo P. Nicholson Michael A. Taylor Ramon L. Carrasquillo Donald A. Graham James E. Olivenon Stanely J. Vigalitte Peggy M. Carrasquillo George W. Hollon James S. Pierce William H. Voelker Alan C. Carter William W. Hotaling, Jr. Sandor Popovics" Jack W. Weber" Martyn T. Conrey Robert S. Jenkins Steven A. Ragan Dean J. White II James E. Cook Paul K1ieger Harry C. Robinson Milton H. Willis, Jr. Russel A. Cook" Frank J. Lahm Jere H. Rose" Francis C. 'Nilson William A. Cordon Slantey H. Lee James A. Scherocman Robert Yuan Wayne J. Costa Gary R. Mass" James M. Shilstone" Gary R. Masst George R. U. Burgt Chairman Chairman, Subcommittee A Edward A. Abdun-Nurt David A. Crocker Richard C. Meiningert William S. Sypher William L. Barringert Luis H. Diaz James E. Olive non Ava Szypula Stanley G. Barton Donald E. Dixont James S. Pierce Jimmie L. Thompsont Leonard W. Bellt Calvin L. Dodl Sandor Popovics Stanley J. Virgalitte James E. Bennett, Jr. Thomas A. Fox Steven A',Ragan Woodward L. Vogt J. Floyd Best George W. Hollon Jere H. Reset Jack W. Weber Ramon L. Carrasquil10 Tarif M. Jaber Donald L. Schlegel Dean J. White, III Jame. E. Cookt Stephen M. Lane James M. Shilstone, Sr. Marshall S. Williams Russell A. Cook Stanley H. Lee Paul R. Stodola John R. Wilsont Describes, with examples, two methods for selecting and adjusting proportions for normal weight concrete, both with and without chemical admixtures, paz- zolanic, and slag materials. One method is based on an estimated weight of the concrete per unit volume; the other is based on cakulations of the absolute volume occupied by the concrete ingredients. The procedures take into consid- eration the requirements for placeability, consistency, strength, and durability. Example cakulations are shown for both methods, including adjustments based on the characteristics of the first trial batch. The proportioning of heavyweight concrete for such purposes as radiation shielding and bridge counterweight structures is described in an appendix. This appendix uses the absolute volume method, which is generally accepted and is Chapter 4-Effects of chemical admixtures, pozzolanlc, more convenient for heavyweight concrete. and other materials on concrete proportions, p.211.1-4 There is also an appendix that provides information on the proportioning of mass concrete. The absolute volume method is used because of its general acceptance. • Members of Subcomminee A who prepared Ihis standard. The committee acknowledges tbe significant coolribution of William L. Barringer to tbe work of4be Kt)'WOI'd.:absOJptioo; admixtures; aggregates; blast·furnace slag; cemeotitious subcomminee. materials; cooaele durability; .on ••.•t•• ; consistency; durability; exposure; fine t Members of Subcomminee A wbo prepared tbe 1991 revision. aggregates;flyasb; beavyweightaggregates; he• .,....,ight.on ••.•t•• ; m•••• on••.•t.; mix This standard supersedes ACI 211.1-89. It was revised by the Expedited proportioning; pouolans; quality control; radiation shielding; silica fume; slump tests; Standardization procedure, effective Nov. 1. 1991. This revisionincorporates provisions volume; water-cement ratio: water-cementitious ratio; workability. related 10 tbe use of tbe mineral admixture silica fume in conaele. Chapler 4 bas been expanded to caver in detail the effects of the use of silica fume on tbe proportions of ACICommitteeReports.Guides.SundardPractices.andCommentariesareintendedfor conaele mixtures. Editorial cbanges bave also been made in Chapters 2 through 4, guidance in planning, designing, executing, and inspecting construction. This document is and Chapters 6 through 8. inlendedfOrlheuse of individualswhoare compelent 10 evalualethe significanceand limitations of its content and recommendations and who win accept responsibility for Copyright <i:'J 1991. American Concrele Inslitule. the application of the material it contains. 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