211.1-91 Standard Practice for Selecting Proportions for ...

1 Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass concrete (ACI ) Reported by ACI Committee 211 Donald E. Dixon,ChairmanJack R. Prestrera,SecretaryGeorge R. U. Burg,*Chairman, Subcommittee AEdward A. Abdun-Nur*Stanley G. BartonLeonard W. Bell*Stanley J. Blas, L CarrasquilloPeggy M. CarrasquilloAlan C. CarterMartyn T. ConreyJames E. CookRussel A. Cook*William A. CordonWayne J. CostaEdward A. Abdun-NurtWilliam L Barringer-tStanley G. BartonLeonard W.

2 Bell?James E. Bennett, Floyd BestRamon L CarrasquilloJames E. Cook-tRussell A. CookDavid A. CrockerKenneth W. DayCalvin L DodlThomas A. FoxDonald A. GrahamGeorge W. HollonWilliam W. Hotaling, S. JenkinsPaul KliegerFrank J. LahmStanley H. LeeGary R. Mass*Mark A. MearingRichard C. Meininger Richard W. NarvaLeo P. NicholsonJames E. OliversonJames S. PierceSandor Popovics*Steven A. RaganHarry C. RobinsonJere H. Rose*James A. ScherocmanJames M. Shilstone*Committee Members Voting on 1991 RevisionGary R.

3 Ma@ George R. U. BurgtChairman Chairman, Subcommittee ADavid A. CrockerLuis H. DiazDonald DixontCalvin L DodlThomas A. FoxGeorge W. HollonTarif M. JaberStephen M. LaneStanley H. LeeRichard C. MeiningertJames E. OliversonJames S. PierceSandor PopovicsSteven A. RaganJere H. RogetDonald L SchlegelJames M.

4 Shilstone, R. StodolaWilliam S. SypherAva SxypulaJimmie L. ThompsontStanley J. VirgalitteWoodward L VogtJack W. WeberDean J. White, IIIM arshall S. WilliamsJohn R. WilsonDescribes, with examples, two methods for Selecting and adjusting proportionsfor normal weight concrete , both with and without chemical admixtures poz-zolanic, and slag materials. One method is based on an estimated weight of theconcrete per unit volume; the other is based on calculations of the absolutevolume occupied by the concrete ingredients.

5 The procedures take into consid-eeration the requirements for placeability, consistency, strength, and calculations are shown for both methods, including adjustments basedon the cheracteristics of the first trial proportioning of heavyweight concrete for such purposes as radiationshielding and bridge counterweight structures is described in an appendix. Thisappendix uses the absolute volume method, which is generally accepted and ismore convenient for heavyweight is also an appendix that provides information on the proportioningof mass concrete .

6 The absolute volume method is used because of its : absorption; admixtures; aggregates; blast-furnace slag; cementitiousmaterials; concrete durability; concretes; consistency; durability; exposure; fineaggregates: fly ash; heavyweight aggregates; he avywe ight co nc retes ; mass con cret e; mixproportioning; pozzolans; quality control; radiation shielding; silica fume; slump tests;volume; water-cement ratio; water-cementitious ratio; Committee Reports, Guides, Standard Practices, and Commentariesare intended for guidance in designing, planning, executing, or inspectingconstruction and in preparing specifications.

7 Reference to these documentsshall not be made in the Project Documents. If items found in thesedocuments are desired to be part of the Project Documents they should bephrased in mandatory language and incorporated into the B. SouthworthAlfred B. SpamerPaul R. StodolaMichael A. TaylorStanely J. VigalitteWilliam H. VoelkerJack W. Weber*Dean J. White IIMilton H. Willis, C. WilsonRobert YuanCONTENTSC hapter 1-Scope, p. 2-Introduction, p. 3-Basic relationship, p. 4-Effects of chemical admixtures, pozzolanic,and other materials on concrete proportlons, p.

8 Members of Subcommittee A who prepared this Standard . The committeeacknowledges the significant contribution of William L. Barringer to the work of Members of Subcommittee A who prepared the 1991 Standard supersedes ACI It was revised by the ExpeditedStandardization procedure, effective Nov. 1, 1991. This revision incorporates provisionsrelated to the use of the mineral admixture silica fume in concrete . Chapter 4 has beenexpanded to cover in detail the effects of the use of silica fume on the Proportions ofconcrete mixtures .

9 Editorial changes have also been made in Chapters 2 through 4,and Chapters 6 through 0 1991, American concrete rights reserved including rights of reproduction and use in any form or byany means, including the making of copies by any photo process, or by any electronicor mechanical device, printed, written, or oral, or recording for sound or visualreproduction or for use in any knowledge or retrieval system or device, unlesspermission in writing is obtained from the copyright ACI COMMITTEE REPORTC hapter 5-Background data, p.

10 6-Procedure, p. 7-Sample computations, p. 8-References, p. 1-Metric system adaptationAppendix 2-Example problem in metric systemAppendix 3-Laboratory testsAppendix 4-Heavyweight concrete mix proportioningAppendix 5-Mass concrete mix proportioningCHAPTER 1 - This Standard Practice describes methods forselecting Proportions for hydraulic cement concrete madewith and without other cementitious materials and chemicaladmixtures. This concrete consists of normal and/or high-density aggregates (as distinguished from lightweightaggregates) with a workability suitable for usual cast-in-placeconstruction (as distinguished from special mixtures forconcrete products manufacture).