1 General Provisions
1.0.1 This standard was developed with a view to strengthening quality management for railway engineering construction, unifying construction quality of railway concrete and masonry engineering, and ensuring engineering quality.
1.0.2 This standard is applicable to constructional quality acceptance of railway concrete and masonry engineering.
1.0.3 The construction parties concerned shall establish and improve quality assurance system, conduct whole-process control for the constructional quality of engineering, and implement lifelong quality accountability system to administrative, technical and operating personnel.
1.0.4 The construction parties concerned shall standardize management system, personnel allocation, site management and process control, and implement construction and management requirements such as quality, safety, construction period, investment returns, environmental protection and technological innovation.
1.0.5 Railway concrete and masonry engineering construction must follow the national laws and regulations and relevant technical standards and the design documents, with raw materials, mix ratio, construction technology, and test and testing being controlled strictly, to meet the requirements of safety, durability and use functions of engineering structure and to ensure normal operation within the design working life.
1.0.6 During railway concrete and masonry engineering construction, efforts shall be put to implement sustainable development strategy of the national economy, make reasonable application of resources, and conduct environmental protection and water and soil conservation measures.
1.0.7 Railway concrete and masonry engineering shall be constructed by modern means, e.g. mechanization, industrialization, specialization and informationization, to ensure engineering quality and construction safety.
1.0.8 Railway concrete and masonry engineering construction shall strictly follow safety procedures and corresponding occupational health standards, for which corresponding safety technical measures shall be established.
1.0.9 Advanced, mature and scientific testing measures are adopted for railway concrete and masonry engineering. Quality testing data must be authentic and reliable, which shall fully reflect the engineering quality condition. The methods and apparatus used shall meet the requirements of relevant standards. Instrument precision shall meet quality control requirements and quality testers must be qualified accordingly.
1.0.10 Various quality testing reports, records on inspection and acceptance and other technical data of railway concrete and masonry engineering must be timely filled in as required and confirmed upon signature of the person responsible.
1.0.11 The requirements for construction quality in the contract agreement and technical document adopted during railway concrete and masonry engineering construction shall not be inferior to those specified in this standard. In the case that designed quality indicators superior to those specified in this standard, the former shall prevail.
1.0.12 Railway concrete and masonry engineering construction and acceptance personnel shall take up their posts only after they pass specialized training.
1.0.13 This standard shall be used with standards for constructional quality acceptance of railway engineering in different specialties.
1.0.14 For the new technologies, process, equipment and materials not involved in this standard, complementary standards shall be developed separately for the acceptance of their constructional quality.
1.0.15 Constructional quality acceptance of railway concrete and masonry engineering shall not only meet the requirements of this standard but also comply with those stipulated in the current relevant standards of the nation.
2 Terminologies
2.0.1 Constructional quality of engineering
All the obvious and implied characteristics in such aspects as safety, functions of use as well as durability and environmental protection, for reflecting that the construction process of engineering or the mass meets those specified in the relevant standards or contract.
2.0.2 Acceptance
The concerned organizations involved in the construction activities jointly conduct the inspection for the quality of inspection lot, subitem, subsection and unit engineering on the base of the self-inspection on the constructional quality of engineering conducted by the construction organization and make a writing confirmation the quantity conformity condition of engineering in accordance with the relevant standards.
2.0.3 Design working life
The target working life, with sufficient safety degree or guarantee rate, used by designers as structural durability design basis.
2.0.4 Site acceptance
The materials, members and accessories, and equipment entering into the construction site are inspected according to those specified in the relevant standards to confirm whether they are qualified or not.
2.0.5 Inspection lot
1 General Provisions
2 Terminologies
3 Basic Requirements
3.1 General Requirements
3.2 Division of the Constructional Quality Acceptance Units of Engineering
3.3 Content and Requirements of Constructional Quality Acceptance of Engineering
3.4 Procedure and Organization of Constructional Quality Acceptance of Engineering
4 Formwork and (Arc) Support Subitem Engineering
4.1 General Requirements
4.2 Installation of Formwork and (Arc) Support
4.3 Removal of Formwork and (Arc) Support
5 Rebar Subitem Engineering
5.1 General Requirements
5.2 Raw Materials
5.3 Rebar Processing
5.4 Rebar Connection
5.5 Rebar Installation
6 Concrete Subitem Engineering
6.1 General Requirements
6.2 Raw Materials
6.3 Mix Ratio Design
6.4 Concrete Construction
7 Prestressed Subitem Engineering
7.1 General Requirements
7.2 Raw Materials
7.3 Fabrication and Installation
7.4 Tension or Tension Release
7.5 Grouting and Anchor Sealing (End)
8 Masonry Subitem Engineering
8.1 General Requirements
8.2 Raw Materials
8.3 Masonry Laying
9 Special Concrete (Mortar)
9.1 General Requirements
9.2 Fiber Concrete
9.3 Sprayed Concrete
9.4 Super Fine sand Concrete
9.5 Shrinkage Compensating Concrete
9.6 No-fines Pervious Concrete
9.7 Airtight Concrete
9.8 Fiber Reinforced Mortar (Reactive Powder Concrete)
9.9 Bridge Bearing Mortar
10 Quality Checking of Concrete Mass
Appendix A Coating Inspection and Repair of Epoxy-coated Steel Bar
Appendix B Technical Requirements and Appearance Quality of Rebar Joint
Appendix C Test Method for Cl- Content in Coarse Aggregate
Appendix D Durability Indexes and Long-term Performance Requirements of Concrete
Appendix E Inspection Method for Air Bubble Spacing Coefficient of Hardened Concrete (Straight Wire Method)
Appendix F Rapid Test Method for Sulfate Corrosion Resistance of Cementitious Material, or Binder
Appendix G Mineral Admixtures and Admixtures Inhibiting Alkali – aggregates Reaction Effectiveness Test Method
Appendix H The Category, Specification and Quality Requirement of the Stones Used for Masonry Engineering
Appendix J The Design, Specimens Fabrication, Curing and Compression Strength Value of Mortar Mix Ratio
Appendix K Manufacturing Method for Sprayed Concrete Strength Inspection Specimens
Appendix L Determination Method For Concrete Permeability Coefficient
Explanation of Wording in This Standard
