P nicolaides central water power commission ministry

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Unformatted text preview: Gammon India Ltd., Bombay MR. E. P. NICOLAIDES Central Water & Power Commission ( Ministry of DR. K. L. RAO Irrigation & Power ) National Buildings Organization ( Ministry of SHRI SARUP SINGH Works; Housing h Supply) SIIRI K. RAMA VARYAN ( Altcrnak ) Roads Wing, Ministry of Transport S~IRI H. P. SINHA Central Standards Ofiice ( Ministry of Railways) SHRI K. C. so00 2 IS : 457 - 1957 CONTENTS PACE .. . . .. . .. ... .. . ... . .. 6 .. . .. . ,.. ... . .. 7 ..* .*. ... . .. .. . . .. . .. . .. ... ... . .. .. . .. . . .. . .. .. . . .. ... 1. SCOPE 2. TERMINOLOGY 3. MATERIALS 3.1 3.2 3.3 3.4 3.5 3.6 5 . .. .. . 0. FOREWORD ... Cement ... Admixture . .. Water Aggregates 1:: Reinforcement Storage of Materials . .. ... 4. CONCRETE 4.1 General ... .. . 4.2 Quality ... ... 4.3 Mix Proportions ... 4.4 Workability ... 4.5 .Slump ... 4.6 Measurement of Materials ... 4.7 Mixing ... 4.8 Handling and Conveying 4.9 Preparation for Placing Concrete ... 4.10 Placing Concrete . .. 4.11 CompacGng... 4.12 Depositing Concrete Under Water 4.13 Weather Conditions 4.14 Curing and Protection’” 4.15 Repair of Concrete 4.16 Finishes and Finishing s., .. . 5. FORMS FOR CONCRETE . .. 5.1 General ... 5.2 Absorptive Form Lining ... 5.3 Form Ties 5.4 Erection of Forms 1:: ... 5.5 Removal of Forms . .. .*. ... ... ... .. . ... c ... .. . ... . .. .. . .. . I.. ... . . . ... . . . .a* . . . ... .*. .I. . . . . . . . . . . .. . .,. . . . . . . . . . . . . . . ..I ... ... *” .. . .. . . ..I . . . . . . . . . . . . . . . . . . . . . . . 1:: ... .. . . . . . . . . . . . ..* . . . . .. . . . . . . .., . . . . . . .. . ... . . . . . . . . . . .. . 1:: ... . . . .. . . . . . . . . . I.. 29 29 33: IS : 457 - 1957 6. CONSTRUCTIONJOINTS 6.1 Location of Joints 6.2 Horizontal Joints 6.3 Vertlcr.1 Joints 6.4 Watertight Joints 6.5 Emergemy Joints ... ... ... . .. ... ... *.. 7. TESTS ... 7.1 Field Tests . . . 7.2 Laboratory Test 1:: 7.3 Test Records 7.4 Test Pieces . . . 1:: 7.5 Compression Tests ... 7.6 Flexure Tests 7.7 Failure to Meet Requirements APPENDIX A APPENDIX B APPENDIX C .. . . .. .. . ... ... . .. . .. . .. . .. . .. ... .*. ... ... ... . .. .e. . . . . . . . . . 32 32 ... . .. . .. ... .. . . .. ... . .. . .. ... . .. ... :i is 32 32 3333 33: 34 34 BETERMINATION OF CONSISTENCY OF CONCRETE BY ..: VEE-BEE CONSISTOMETER METHOD. . . 34 METHOD OF SECURIN’CHARDENED SPECIMENSOF ... ... CONCRETE ROM THE STRUCTURE F 3% FLEXURAL STRENGTH OF CONCRETE ( USING SIMPLE ... BEAM WITH THIRD-PWNT LOADING ) 41 1s:452;1957 Indian Standard CODE OF PRACTICE FOR GENERAL CONSTRUCTION OF PLAIN AND REINFORCED CONCRETE FOR DAMS AND OTHER MASSIVE STRUCTURES 0. . FOREWORD 0.1 This Indian Standard W;IS adopted by the Indian Standards Institution on 22 March 1957, on approval by the Building Division Council of the draft finalized on 14 September 1956, by the Cement and Concrete Sectional Committ2.e. 0.2 Cement concrete, both plain and reinforted. is being extensively used in the various multi-purpose pro...
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