Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/11111
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dc.contributor.authorBombich, Anthony A.-
dc.contributor.authorMagoun, A. Dale.-
dc.date.accessioned2016-06-20T14:14:04Z-
dc.date.available2016-06-20T14:14:04Z-
dc.date.issued1982-08-
dc.identifier.urihttp://hdl.handle.net/11681/11111-
dc.descriptionMiscellaneous Paper-
dc.description.abstractHigh-strength concrete mixtures were proportioned and tested in order to achieve compressive strengths in excess of 9,000 psi at 1 year of age and 11,000 psi at 2 years of age. These mixtures were proportioned to minimize total heat generation when used during construction of the Alternate National Military Command Center (ANMCC). Minimization of heat generation, especially that occurring at early ages, serves to minimize thermal strains occurring in the concrete cavity liners. The study was conducted in two phases. In Phase I a matrix of 28 high-strength concrete mixtures was evaluated to isolate concrete mixtures which best met the specified criteria. Mixtures contained several levels of water reduction, cement contents, and pozzolan (fly ash) replacement of cement. Steel fibers were also used. Curing was done at 73 F and 122 F in sealed and immersed condition. The study indicated that all mixtures containing pozzolan failed to gain appreciable strength after 28 days age when cured at 122 F. This was the appropriate curing temperature which would exist in ANMCC concrete liners. The optimum mixture chosen contained 658 lb of Type V cement, with no pozzolan replacement, and contained high-range water-reducing admixtures. Water-cement ratio by weight was 0.364. Statistical analyses performed on Phase I test results appear as appendices. Phase II included tests on the mixture chosen as optimum from Phase I. Included were tests to determine thermal and mechanical properties on concrete specimens cured at 73 F and 122 F in sealed condition. The data obtained from Phase II tests were used in computer thermal studies for the ANMCC.-
dc.description.sponsorshipPrepared for U. S. Army Engineer District, Omaha, Omaha, Nebr. 68102-
dc.description.sponsorshipCONTENT PREFACE . • . • • . • • • • • • • • • • • • • • • • • • • • • • • CONVERSION FACTORS, NON-SI TO METRIC (SI)UNITS OF MEASUREMENT . . . . . . . • • . . • . . • • • • • • • • • • • PART I: INTRODUCTION • • • • • • • • • • • • • • • • • • • • • • Background . . . . . . . . . . . . . . . . . . . . . · . Purpose and Scope . • . . . . • • . • . • • . . . . • • • • • • • • • • PART II: CONCRETE MIXTURES AND MATERIALS • • • • • • • • • • • • Concrete Mixture Materials. . • • • • • • • • • • • • • • • • • Cement . • . . . . • . • • • • • • • • • • • • • • • • • • • • Pozzolan (Fly Ash). . . . . . . . • . . • . • • • . . . . . . Coarse Aggregate. • . . . . . . • . . . • . . . . • . . • • . Fine Aggregate . • . . . . . • • • . . . • . . • • . . • • • • Water-Reducing Admixtures . . . • • . . . . . . . • . . . • . Steel Fibers. . • • • . • • . • . • . • . • • • • . • • . . • Mixture Design Considerations . • • • • • • • • • • • • • • • • PART III: CONCRETE TESTING . . • • • • • • • • • • • • • • • • • Page 4 5 5 6 8 8 8 9 9 10 11 11 12 14 Specimen Curing Conditions. Specimen Proportions• • . . Tests and Procedures• . . . • • • • • • • • • • • • • • • • • • 14 • • • • • • • • • • • • • • • • • • 15 • • • • • • • • • • • • • • • • • • 16 Compressive Strength, Modulus of Elasticity , and Poi sson 's Ratio , . • . . . . . . . . • . . • • . . . . . . 16 Flexural Strength (Modulus of Rupture)and Tensile Strain Capacity • • . • . • . . . • . . . . . . . • . . • . 17 Thermal Diffusion, Specific Heat, and Thermal Conduc tivity . . . . . . . . . . . . . . . . . . . . . . . . 18 Adiabatic Temperature Rise. . • • . . • . . . . • . . . . • . 18 Coefficient of Thermal Expansion. . . • . • . • . • • . . • . 18 PART IV: TEST RESULTS• . • • • • • • • • • • • • • • • • • • • • 19 Phase I Tests . . . • . Compressive Strength . Flexural Strength • • Phase II Tests. . . . . • • • • • • • • • • • • • • • • • • • • 19 • • • • • • • • • • • • • • • • • • • • 19 • • • • • • • • • • • • • • • • • • • • 23 • • • • • • • • • • • • • • • • • • • • 23 PART V: REVIEW AND RECOMMENDATIONS • • • • • • • • • • • • • • • 26 Phase I . . . Phase II. . . High-Strength • • • • • • • • • • • • • • • • • • • • • • • • • 26 • • • • • • • • • • • • • • • • • • • • • • • • • 28 Concrete Placement Guidelines . • • • • • • • • • 28 REFERENCES. TABLES 1-17 • • • • • • • • • • • • • • • • • • • • • • • • • • • 30 FIGURES 1-18 APPENDIX A : EXPERIMENT I, EVALUATIONS OF COMPRESSIVE STRENGTH APPENDIX B APPENDIX C GAIN OF PHASE I CONCRETE MIXTURES BY AGE WITH RESPECT TO WATER-REDUCING ADMIXTURES, CURING TEM­ PERATURES, AND POZZOLAN REPLACEMENT FOR A SINGLE CEMENTITIOUS MATERIALS CONTENT BY SOLID VOLUME . . . Al EXPERIMENT II, EVALUATIONS OF COMPRESSIVE STRENGTH GAINS OF PHASE I CONCRETE MIXTURES BY AGE WITH RESPECT TO VARYING SOLID VOLUMES OF CEMENTITIOUS MATERIALS, CURING METHOD, CURING TEMPERATURE, AND POZZOLAN REPLACEMENT . . • . . • • • B EXPERIMENT III, MATHEMATICAL MODELING OF COM­ PRESSIVE STRENGTHS GAINS OF PHASE I CONCRETE MIXTURES WITH RESPECT TO WATER/CEMENTITIOUS MATERIALS RATIO, SOLID VOLUMES OF CEMENTITIOUS MATERIALS CONTENT, AND AGE . . . . . . . . . . • • • C 3-
dc.format.extent115 pages-
dc.format.mediumPDF/A-
dc.language.isoen_US-
dc.publisherStructures Laboratory (U.S.)-
dc.relationhttp://acwc.sdp.sirsi.net/client/en_US/search/asset/1036145-
dc.relation.ispartofseriesMiscellaneous Paper (Structures Laboratory (U.S.)) ; SL-82-12-
dc.rightsApproved for public release; distribution is unlimited-
dc.sourceThe ERDC Library created this digital resource from scans of the Print Resource-
dc.subjectANMCC Improvement Project-
dc.subjectHigh strength concrete-
dc.subjectNuclear weapons effects-
dc.subjectStrength of materials-
dc.subjectConcrete testing-
dc.subjectNuclear explosions-
dc.subjectConcrete specifications-
dc.subjectAlternate National Military Command Center-
dc.titleOptimization of high-strength concrete mixture proportions for the ANMCC Improvement Project-
dc.typeReport-
Appears in Collections:Miscellaneous Paper

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