SECTION 06100 - CONCRETE AND CONCRETE STRUCTURES

This Specification section addresses requirements and procedures for concrete work which shall include, but not be limited to, preparing concrete mixes of different classes, transporting and placing on prepared surfaces or in pre-prepared forms, including supplying and fixing of temporary and permanent formwork; vibrating, tamping and curing. This Specification section shall be applicable to all concrete and concrete construction including cast-in-place concrete elements, precast concrete members and pre-stressed concrete works....
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SECTION 06100 - CONCRETE AND CONCRETE STRUCTURES DIVISION 6 ­ CONCRETE AND CONCRETE STRUCTURES  Concrete and Concrete Structures­Section 06100 SECTION 06100 - CONCRETE AND CONCRETE STRUCTURES TABLE OF CONTENTS 1. DESCRIPTION .................................................................................................................................................1 2. STANDARDS AND CODES.............................................................................................................................1 3. MATERIALS .....................................................................................................................................................2 3.1 General 2 3.2 Cement 2 3.3 Aggregate 3 3.3.1 FINE AGGREGATES ..............................................................................................................................................4 3.3.2 COARSE AGGREGATE  ..........................................................................................................................................5 3.4 Water for Concrete Mixing and Curing.............................................................................................................6 3.5 Admixtures.........................................................................................................................................................6 4. CONCRETE CLASSES.....................................................................................................................................7 4.1 General   7 4.2 Class Requirements  ..........................................................................................................................................7 PREPARED BY N.D.TOAN 4.2.1 USES OF DIFFERING CLASSES OF CONCRETE  ...........................................................................................................8 5. MIX DESIGNS ..................................................................................................................................................8 5.1 Samples   8 5.2 Mix Design  .......................................................................................................................................................8 5.3 Adjustments During Progress of Work  ............................................................................................................9 5.4 Contents of Chlorides and Sulphates..................................................................................................................9 6. WATER ­ CEMENT RATIO..........................................................................................................................10 7. TESTING..........................................................................................................................................................10 7.1 Slumps 11 8. FORMWORK...................................................................................................................................................11 8.1 Design   11 8.2 Construction  ...................................................................................................................................................12 8.3 General Requirements......................................................................................................................................12 9. CONCRETING.................................................................................................................................................13 9.1 General   13 9.2 Placing and Compacting...................................................................................................................................14 9.3 Weather Precautions  .......................................................................................................................................15 TECHNICAL SPECIFICATIONS ­ DIVISION 6 Created on 18/04/2000 16:05:00 ...