What is the national standard for the concrete industry in 2011.

2011 National Standards and Specifications for Concrete Industry (Part I).

Serial number Standard number Book title Substitution situation.

jd0001

National Technical Measures for Civil Construction Engineering Design (2009 Edition)National Technical Measures for Civil Construction Engineering Design 2009: Planning * Architecture * Landscape.

Replacement of the 2003 edition.

jd0002

National Technical Measures for Civil Construction Engineering Design 2009: Structure.

Replacement of the 2003 edition.

jd0003

National Civil Construction Engineering Design Technical Measures 2009: HVAC * Power.

Replacement of the 2003 edition.

jd0004

National Civil Construction Engineering Design Technical Measures 2009: Electrical Substitution 2003 Edition.

jd0005

National Technical Measures for the Design of Civil Construction Engineering 2009: Air Defense Basement.

Replacement of the 2003 edition.

jd0006

National standards and norms.

Mandatory provisions of engineering construction standards: housing construction part (2009 edition) replaces 2002 edition.

jd0007

GB50011-2010 Code for Seismic Design of Buildings.

Replacement for GB50011-2001

jd0008

GB50015-2003 (2009 Edition) Code for Design of Building Water Supply and Drainage.

Replacement for GB50015-2003

jd0009

GB50021-2001 Geotechnical Investigation Code (2009 Edition) replaces GB50021-2001

jd0010

GB50023-2009 Seismic Appraisal Standard for Buildings.

Replaces GB50023-95

jd0011

GB50052-2009 Code for design of power supply and distribution system.

Replaces GB50052-95

jd0012

GB T50082-2009 Standard for test methods for long-term performance and durability of ordinary concrete.

Replacement for GBJ82-85

jd0013

GB50098-2009 Code for fire protection of civil air defense engineering design.

Replacement for GB50098-98

jd0014

GB T50125-2010 Standard for basic terminology of water supply and drainage engineering.

Replace GBJ125-89

jd0015

GB T50138-2010 water level observation standard.

Replacement for GBJ138-90

jd0016

GB50154-2009 Code for the design of underground and earth-covered gunpowder and explosives warehouses.

Replace GB50154-92

jd0017

GB50209-2010 Code for Acceptance of Construction Quality of Building Ground Engineering.

Replacement GB50209-2002

jd0018

GB50231-2009 General specification for construction and acceptance of mechanical equipment installation engineering.

Replaces GB50231-98

jd0019

GB50278-2010 Lifting equipment installation engineering construction and acceptance specification.

Replacement for GB50278-98

jd0020

GB50494-2009 Technical Specification for Town Gas.

Code for the design of concrete structures.

Legal analysis: electronic measuring equipment should be used for the measurement of raw materials. The accuracy of the metering equipment should meet the relevant provisions of the current national standard "Technical Conditions for Concrete Batching Plants (Buildings)" GB 10172, and should have a valid verification certificate issued by the legal metrology department, and should be calibrated regularly.

Concrete production units should self-inspect once a month; Before the start of each shift, the measuring equipment should be calibrated at zero point.

Legal basis: Standardization Law of the People's Republic of China

Article 20: The State supports the use of self-correcting and innovative technologies in areas such as important industries, strategic emerging industries, and key common technologies to formulate group standards and enterprise standards.

Article 21 The technical requirements of recommended national standards, industry standards, local standards, group standards, and enterprise standards shall not be lower than the relevant technical requirements of mandatory national standards. The State encourages social groups and enterprises to formulate group standards and enterprise standards that are higher than the relevant technical requirements of the recommended standards.

Article 22 The formulation of standards shall be conducive to the scientific and rational use of resources, the promotion of scientific and technological achievements, the enhancement of product safety, versatility and replaceability, the improvement of economic, social and ecological benefits, and the achievement of technological advancement and economic rationality.

Legal analysis: The state issued the "China National Standard for Ready-Mixed Concrete", which came into effect on September 1, 2013.

Legal basis: "Law of the People's Republic of China on the Promotion of Circular Economy" Article 23 Architectural design, construction, construction and other units shall, in accordance with the relevant provisions and standards of the State, adopt energy-saving, water-saving, land-saving, material-saving technologies and small, light and renewable products for their design, construction and construction of buildings and structures. In areas where conditions permit, renewable energy sources such as solar, geothermal, and wind energy should be fully utilized.

The State encourages the use of non-toxic and harmless solid waste to produce building materials, encourages the use of bulk cement, and promotes the use of ready-mixed concrete and ready-mixed mortar.

It is forbidden to destroy cultivated land and burn bricks. It is forbidden to produce, sell and use clay bricks within the time limit and area specified by the people of provinces, autonomous regions and municipalities directly under the Central Government.

Regulations on the Quality Management of Construction Projects》 Article 29 The construction unit shall, in accordance with the engineering design requirements, construction technical standards and contract agreements, inspect the building materials, building accessories, equipment and commercial concrete, and the inspection shall have a written record and a special signature; If it has not been inspected or the inspection is unqualified, it shall not be used.

1. When continuing to pour concrete at the construction joint, if the intermittent time exceeds the provisions, it will be treated according to the construction joint, and the concrete compressive strength is not less than when it is allowed to continue to perfusion.

2. Before continuing to pour concrete on the hardened concrete surface, remove the cement film on the surface and loosen the gravel or weak concrete layer, and fully moisten and rinse it, and remove the water remaining on the concrete surface. Before reinforcing it, it can be chiseled only after temporary support and reinforcement. The specifications and electrode types should conform to the design and construction specifications of the steel bar project, and there are material and product qualification certificates and physical property inspections.

3. Welders must hold the corresponding level of welder certificate before they are allowed to operate.

4. Before welding, two tensile specimens should be made with the same materials, welding conditions and parameters in advance, and the test results are greater than the tensile strength of the type of steel bar, and formal welding is allowed, and the specimens can not be sampled from the finished product at this time.

Legal basis: Regulations of the People's Republic of China on Information Disclosure

Article 7: All levels of the people** shall actively promote information disclosure efforts, gradually increasing the content of information disclosure.

Article 8: The people at all levels shall strengthen the standardization, standardization, and informatization management of information resources, strengthen the establishment of information disclosure platforms on the Internet, promote the integration of information disclosure platforms and government service platforms, and increase the level of information disclosure.

Article 9: Citizens, legal persons, and other organizations have the right to supervise administrative organs' information disclosure efforts, and to make criticisms and suggestions.

The concrete strength grade of plain concrete structure should not be lower than C15; The concrete strength grade of reinforced concrete structures should not be lower than C20; When using steel bars with a strength grade of 400MPa and above, the concrete strength grade should not be lower than C25. The concrete strength grade of the prestressed concrete structure should not be lower than C40 and should not be lower than C30. Reinforced concrete elements subjected to repetitive loads should not have a concrete strength class of less than C30.