1 General provisions
1.0.1 for the standardization of construction and municipal engineering waterproofing performance, to protect personal health and life and property safety, ecological and environmental safety, waterproofing project quality, to meet the needs of economic and social management, according to relevant laws and regulations, the development of this specification.
1.0.2 construction and municipal engineering waterproofing must implement this specification.
1.0.3 technical methods and measures used in the construction of the project is in line with the requirements of this specification, by the relevant responsible body to determine. Among them, innovative technical methods and measures should be demonstrated and comply with the performance requirements of the Code.
2 Basic provisions
2.0.1 Engineering waterproofing shall follow the principles of local conditions, prevention, prevention and drainage, and comprehensive management.
2.0.2 engineering waterproofing design work life shall comply with the following provisions:
1 underground engineering waterproofing design work life should not be lower than the engineering structure design work life;
2 roofing project waterproofing design working life should not be less than 20 years;
3 indoor engineering waterproofing design working life should not be less than 25 years;
4 bridge engineering bridge deck waterproofing design working life should not be lower than the design working life of the bridge deck pavement;
5 non-aggressive media storage class dingcheng waterproof layer design working life should not be less than 10 years.
2.0.3 project according to the importance of its function to prevent the eternal divided into class A, billion and C, the specific division should be consistent with the provisions of Table 2.0.3.
3 Material engineering requirements
3.1 General provisions
3.1.1 durability of waterproofing materials should be compatible with engineering waterproofing design work life.
3.1.2 waterproofing materials should be selected in accordance with the following provisions:
1 material performance should be used with the project to adapt to environmental conditions
2 each waterproof layer thickness should meet the minimum thickness of waterproofing requirements;
3 waterproofing materials affecting the environment and harmful substances limit should meet the requirements.
3.1.3 exposed use of waterproofing materials should not be less than B2 level of combustion performance.
3.2 Waterproof concrete
3.2.1 waterproof concrete construction ratio should be determined through the test, its strength grade should not be lower than C25, test concrete with the level of impermeability should be higher than the design requirements of 0.2MPa.
3.2.2 Waterproof concrete should take technical measures to reduce cracking.
3.2.3 Waterproof concrete should meet the requirements of pressure, seepage and crack resistance, in addition to the durability requirements of the environment and working conditions in which the project is located.
4 Design
4.1 General provisions
4.1.1 Engineering waterproofing should be carried out special waterproofing design.
The following pine public shall have a special waterproofing design.
1 Concrete roofing sheets
2 plastic drainage board;
3 decorative tiles and non-lap tiles that do not have a waterproof function; grouting reinforcement.
4.1.3 Planting roofs and underground structures planting roof engineering waterproofing grade should be one, and should be set up at least a waterproof layer with root penetration resistance, which should be set up on the protective layer.
4.1.4 There should be no physical or chemical interaction between adjacent materials and their construction processes.
4.1.5 Waterproof concrete shall be used for the main structure of the waterfront of underground works and shall comply with the following provisions
Waterproof concrete shall meet the requirements of seepage resistance level; waterproof concrete structure thickness should not be less than 250mm;
The crack width of waterproof concrete should not be greater than the allowable limit of the structure, and should not penetrate;
5 General provisions
5.1.1 waterproofing construction should be based on design documents before the preparation of waterproofing special construction program.
5.1.2 rainy days, snow or five or more windy environment, should not be open-air waterproofing construction.
5.1.3 waterproofing materials and supporting auxiliary materials into the field should provide product certification, quality inspection reports, manuals, into the field re-inspection report. Waterproofing membrane into the field re-inspection report should contain no treatment when the coil peel strength and lap joints impermeability test results.
5.1.4 waterproofing construction should be confirmed before the grass-roots level has been accepted, the quality of grass-roots level should meet the waterproofing material construction requirements.
5.1.5 paving waterproofing roll-roofing or waterproofing paint should be made rounded or chamfered corner parts.
5.1.6 waterproof concrete construction should comply with the following provisions:
1 transport and pouring process is strictly prohibited to add water;
2 shall be promptly moisturised and maintained for a period of not less than 14d;
3 after pouring parts of the concrete construction before the interface should be done brown surface treatment, and should remove water and debris.
5.2 Underground works by open cut method
5.2.1 Leakage in the joints of diaphragm walls shall be stopped by grouting and filling.
5.2.2 pile head should be coated with external cement-based crystalline waterproofing material, the coating layer and the waterproofing layer of the large surface lap width should not be less than 300mm. waterproofing layer should be sealed at the root of the pile head treatment.
5.2.3 waterproofing requirements of the underground structure wall should be used through the wall waterproofing buttress screw bolt set.
5.2.4 buried waterstop construction should comply with the following provisions:
1 steel plate water stop using welding connection should be full welding;
2 rubber waterstop should be used to heat vulcanization connection, connecting joints should not be located in the structure of the corner parts, corner parts should be rounded;
3 Self-adhesive butyl rubber sheet waterstop tape self adhesive lap length should not be less than 80mm, when using mechanical fixed lap, the lap length should not be less than 50mm;
4 steel edge rubber waterstop riveted, riveted parts should be sealed with self-adhesive tape. 5.2.5 waterproofing coil construction should comply with the following provisions:
1 main structure side wall and top plate on the waterproofing membrane should be full sticky, side wall waterproofing membrane should not be vertical inverted lap.
6 acceptance
6.0.1 waterproofing construction should be completed in accordance with the prescribed procedures and organization of quality acceptance.
6.0.2 waterproofing acceptance, the following documents and records should be verified, the
1 design construction drawings, drawings will be reviewed records, design changes documents;
2 material product certification, quality inspection reports, incoming material re-inspection report; 3 construction program;
4 concealed works acceptance records;
5 project quality inspection records, water leakage treatment records; 6 drenching, water storage or pool full water test records;
7 Construction records;
8 quality acceptance records.
6.0.3 waterproofing project quality inspection criteria shall be consistent with the provisions of Table 6.0.3.
6.0.4 underground works, building roofing, building interior, road and bridge works and other drainage systems should be smooth.
6.0.5 waterproofing concealed works should be kept on site image data, the formation of concealed works acceptance records, waterproofing concealed works inspection content should be in line with the provisions of Table 6.0.5.
7 operation and maintenance
7.1 General provisions
7.1.1 building or municipal engineering manuals and quality assurance letters should contain waterproofing warranty responsibilities, warranty coverage and warranty period.
7.1.2 As-built drawings and technical information relating to waterproofing works should be kept for a period not less than the working life of the waterproofing design of the project. When the operation and maintenance unit changes, the relevant information and drawings should be transferred at the same time.
7.1.3 should be required to check the delivery of technical information related to waterproofing works, to ensure that complete and accurate, when problems are found, should be referred to the construction unit to deal with.
7.1.4 After the warranty period has expired, the overall condition of the waterproofing works should be checked. A technical review of the waterproofing function should be carried out when the waterproofing project reaches its design working life.
7.2 Management
7.2.1 A maintenance management system for waterproofing works should be established and regular inspections and maintenance should be carried out.
7.2.2 Leakage contingency plans should be established for underground works and water storage type works.
7.2.3 When leakage occurs in a project, a site survey shall be carried out, the cause of leakage shall be determined, a maintenance plan shall be formulated and a special acceptance shall be carried out after the treatment is completed.
7.2.4 Waterproofing maintenance files should be established to ensure traceability of maintenance quality.
1 General provisions
2 Basic provisions
3 Material engineering requirements
4 Design
5 General provisions
6 acceptance
7 operation and maintenance
