Detail of JTS 202-2011

Introduction of JTS 202-2011

1 General Provisions 1.0.1 This specification is formulated with a view to unifying the technical requirements of concrete construction for port and waterway engineering, guaranteeing the engineering quality, and achieving advanced technology as well as economy and rationality. 1.0.2 This specification is applicable to the construction of plain concrete, reinforced concrete and prestressed concrete for permanent hydraulic structure of port and waterway engineering. It also applies to the concrete construction for affiliated industrial and civil buildings of port and waterway engineering. 1.0.3 The concrete construction of port and waterway engineering shall not only meet the requirements of this specification, but also comply with those in the current relevant ones of the nation. 2 Terminology 2.0.1 Marine environment The environment where the port and waterway engineering buildings affected by sea water are located. 2.0.2 Cementitious material A generic term for cement or active mineral admixture of cement and fly ash as well as granulated blast furnace slag powder and silica fume which is used to mix prepare concrete. 2.0.3 Crusher dust Grains in aggregate, with nominal grain size less than 80μm and the same mineral composition and chemical composition as aggregate. 2.0.4 Water to binder ratio A ratio of water consumption and total cementitious material, in unit volume, for preparing concrete. 2.0.5 High performance concrete Cement-based concrete with high durability, high volume stability, excellent workability and high strength, prepared, at ordinary temperature, based on common materials, conventional processes, low water to binder ratio, high volume quality admixture as well as strict quality control. 2.0.6 Mass concrete Concrete where it is expected that crack or structural section with minimum size greater than or equal to 1m will be caused due to temperature variation arising from cementitious material hydration. 3 Basic Requirements 3.0.1 Not only the concrete strength and its mixture workability must meet the design and construction requirements, but also the concrete shall have frost resistance, impermeability, corrosion resistance, reinforcing bar rust resistance and ice impact resistance. 3.0.2 The division of concrete position on buildings shall be in accordance with those specified in Tables 3.0.2-1and 3.0.2-2.

Contents of JTS 202-2011

1 General Provisions 2 Terminology 3 Basic Requirements 4 Materials 4.1 Cement 4.2 Fine Aggregate 4.3 Coarse Aggregate 4.4 Admixture 4.5 Additive 4.6 Mixing Water 4.7 Reinforcing Bar 5 Mix Design 5.1 General Requirements 5.2 Mix Design of Concrete with Special Requirements 6 Formwork Engineering 6.1 General Requirements 6.2 Formwork Design 6.3 Formwork Fabrication 6.4 Formwork Installation 6.5 Formwork Dismantling 6.6 Special Formwork 7 Reinforcing Engineering 7.1 General Requirements 7.2 Processing 7.3 Joint 7.4 Installation 8 Concrete Works 8.1 Mixing 8.2 Transportation 8.3 Pouring 8.4 Maintenance 8.5 Quality Inspection 8.6 Crack Prevention Measures for Mass Concrete 8.7 Construction Defects Repairing 9 Prestressed Concrete Works 9.1 Prestressed Bar Fabrication 9.2 Prestress Tension and Loosening Equipment 9.3 Stressing 9.4 Pre-tensioning Method 9.5 Post-tensioning Method 9.6 Unbounded Prestressing 10 Special Concrete Construction 10.1 Construction in Rainy Day 10.2 Construction in Hot Weather 10.3 Construction in Cold Weather 10.4 Underwater Concrete Construction 10.5 Self-compacting Concrete Construction 10.6 Pumped Concrete Construction 10.7 Vacuum Dehydration Concrete Construction 10.8 Underwater Prepacked Aggregate Concrete Construction 10.9 Expansion Concrete Construction 10.10 Synthetic Fiber Concrete Construction Appendix A Quality Standard of Air Entraining Agent Appendix B Preparation and Application method of Air Entraining Agent Solution B.1 Preparation of Air Entraining Agent Solution B.2 Method of Application B.3 Notices Appendix C Inspection for the Foam Degree of Air Entraining Agent Solution by Hand Shaking Appendix D Mechanical and Processing Properties of Reinforcement Bar for Concrete D.1 Mechanical and Processing Properties of Ordinary Reinforcement Used for Reinforced Concrete D.2 Steel Wire for Prestressed Concrete Appendix E Methods for Early Shrinkage Cracking Test of Synthetic Fiber Concrete E.1 Preparation of Synthetic Fiber Concrete Specimens E.2 Test and Evaluation Methods Appendix F Standard Load Value and Partial Coefficients of Common Formwork F.1 Standard Load Value for Calculating Formwork F.2 Partial Load Coefficient for Calculating Formwork Appendix G Methods for Testing the Mixture Properties of Self-compacting Concrete G.1 Methods for Testing Slump Flow, T500 Flowing Time G.2 L Type Meter Test Method G.3 U Type Meter Test Method G.4 Methods for Shock Table Test of Mixture Stability Appendix H Explanation of Wording in This Code Additional Explanation List of Chief Development Organization, Participating Organization, Chief Drafting Personnel, Chief Proofing Personnel and Administrative Personnel for this Code