What conditions are required for the testing of construction materials?

The materials have entered the site, the material quality certification documents are complete when entering the site, the sampling has been witnessed on site, and there is an inspection order from the laboratory with corresponding qualifications.

To apply for the qualification of construction engineering quality inspection institutions, it is necessary to submit information, application procedures and qualification conditions.

Application materials (in triplicate).

1. Application form for XX Provincial Construction Engineering Quality Inspection Agency;

2. Industrial and commercial business license;

3. Organizational chart of testing institutions;

4. Administrative, technical, quality, and testing personnel qualifications and employment relationship certification materials;

5. Various management systems of testing institutions;

6. Ability and performance certification materials for applying for testing projects;

Declaration Procedure. 1. The applicant fills in the "Application Form for the Qualification of XX Provincial Construction Engineering Quality Inspection Agency", prepares the application materials, and enters the floppy disk as required.

2. The applicant will fill in the application form, information floppy disk and related information to the construction administrative department where the applicant is registered for industry and commerce, and after verifying the materials reported, the construction administrative department shall report to our committee.

3. Our committee will accept it from the 1st to the 10th of each month, and report to the Provincial Department of Construction for approval after the preliminary examination within 20 working days after the information is complete and meets the requirements.

Qualifications. According to the comprehensive technical ability of testing, construction engineering quality inspection institutions are divided into: construction engineering materials, construction engineering special classes and construction engineering appraisal testing institutions.

1. Testing institutions for construction engineering materials.

1) Basic conditions.

1. Independent legal entity;

2. The registered capital shall not be less than RMB 500,000;

3. Have office space, facilities and testing equipment suitable for the business carried out;

4. The legal representative of the testing institution shall be a person who is familiar with the testing technology and management business of the specialty and has an intermediate technical title for more than three years;

5. The proportion of technical personnel in the testing institution should not be less than 70%;

6. The testing institution shall have more than 4 practitioners who have obtained the qualification of construction engineering quality inspection, including at least 1 chief testing engineer and at least 2 project testing engineers.

2) The basic testing items that should be possessed:

1. Building materials:

1) cement, sand, light aggregates, admixtures, wall bricks and blocks;

2) Rebar and rebar joints (welding and connection);

3) Ordinary concrete, impermeable concrete, masonry mortar;

4) Waterproof material.

2. Concrete prefabricated components.

3. Bonding strength of exterior facing bricks.

3) Other testing items that can be carried out:

1. Building doors and windows - air tightness, water tightness, wind pressure deformation performance;

2. Chemical building materials.

**Ask me about the construction network.

1. Investigate the information of housing construction. Including: consulting engineering geological survey reports, design drawings, construction records, and project completion acceptance.

information, and other relevant information that can reflect the construction of the house.

2. Investigate the historical evolution of the house.

Including: usage, inspection and detection, maintenance, reinforcement, transformation, change of use, change of use conditions, and disaster damage and repair.

3. Check and check the consistency of the housing entity and the drawings (text) data.

4. Check the structural layout and structural connection and structural system of the house.

5. Check and measure the inclination and uneven settlement of the house.

6. Investigate the current situation of the house. Including: the actual condition of the building, its use, the internal and external environment, and the current problems.

7. Investigate the requirements for the future use of the house. Including: the target use period of the house, the conditions of use, the internal and external environmental effects, etc.

8. Sampling or full inspection and measurement of cracks, displacement, deformation or corrosion, aging and other damage of load-bearing structures or components, and using text, drawings, ** or video recording methods to record the location, scope and extent of damage to the main structure and load-bearing components of the house and the nature of the damage.

9. According to the needs of the structural bearing capacity calculation, the mechanical properties of the structural materials should be checked by sampling.

10. When it is necessary to hold Huai Zheng, the load or action on the structure can be detected.

11. If necessary, the survey of engineering geology should be supplemented.

12. If necessary, the actual bearing performance of the structure or component can be verified by load test.

13. When there is a large dynamic load, the dynamic reflection and dynamic performance of the structure or component should be tested.

The testing content of building materials includes: mortar: compressive strength, consistency, delamination rate, water retention rate, apparent density, setting time, tensile bonding strength, etc.

Engineering structure reinforcement materials: tensile strength, elastic modulus, ultimate elongation, colloidal compressive strength, bonding strength, shear strength, compressive shear strength, fiber fabric unit area quality and other stones: compressive strength, bending strength, bulk density, water absorption, pollution resistance, etc.

Ceramic bricks: water absorption, pollution resistance, chemical corrosion resistance, fracture modulus, failure strength, etc. Structural Sealants:

Tensile adhesion, tensile modulus, sagging, hardness, surface drying time, extrusion, mass loss rate, elastic recovery rate, etc. Aluminum alloy profiles: tensile strength, elongation after break, coating thickness, paint film hardness, paint film adhesion, etc.

Material test inspection report and certificate required for the project:

A noisy, masonry.

1. Cement factory certificate (including factory test report) retest report.

2. Brick (block) factory certificate, factory inspection report, retest report, 3. Mortar test block pressure test report.

2. Concrete.

1. Concrete admixture product certificate, factory inspection report and retest report.

2. Prestressed channel grouting admixture product certificate and entry re-inspection report.

3. Fly ash certificate and re-inspection report.

4. Sand and stone entry retest report.

5. Prefabricated components and ready-mixed concrete certificates.

6. Concrete opening identification.

7. Ready-mixed concrete transport bill.

8. Concrete soil test block test report (including demolitional strength report) liquid bridging.

9. Impermeability test report of impermeable concrete test block.

10. Concrete pressure test report.

11. Rebar certificate (exit inspection report) and retest report.

12. Certificate of prestressed anchors, fixtures and continuous sales of connectors.

13. Certificate of rebar mechanical connector.

14. Inspection report of mechanical connection type of steel bar.

15. Welding material certificate and retest report.

16. Other steel (rebar) connection certificate and retest report.

Note: The certificate and the copy should be indicated accordingly (original depository, batch number, number of representatives, use part, personnel, date, etc.).

3. Decoration 1, veneer (brick) product certificate, re-inspection report.

2. Ceiling and partition wall keel product certification.

3. Door and window product certificate and re-inspection report.

Note: Special doors and windows should have a production license and appraisal certificate. Building exterior windows should have three sex tests (wind pressure resistance, air permeability.

and rainwater infiltration performance) test report.

4. Partition wall panels, ceilings, partition panels product certificates.

5. Artificial wood board certificate and formaldehyde content re-inspection report.

6. Glass product certificate and performance test report.

Note: Safety glass should have three C certification.

7. Radioactivity test report of indoor marble, granite, wall and floor tiles and other inorganic non-metallic materials, and radioactivity re-inspection of natural granite.

Report. 8. Coating product certificate and performance test report.

9. Wallpaper and wall cloth product certificates and performance test reports for pasting.

10. Certification and performance test report of upholstered fabrics and lining products.

11. On-site pull-out strength test report of the embedded parts of the facing brick.

12. Facing brick bond strength test report.

13. Indoor environment test report.

14. Lightweight wallboard certificate and type.

The materials that need to be retested on site are:

1. The interior finish is made of natural granite stone or porcelain brick, with a usable area of more than 200, and the radioactive indicators are retested for different products and different batches of materials;

2. The indoor wood-based panel area is greater than 500m2, and the free formaldehyde content or release amount of different products and different batches of materials are tested for double key rotting;

3. The report of on-site sampling and testing of VOCs and free formaldehyde content of different batches of products using water-based coatings, water-based adhesives and water-based treatment agents used in interior decoration;

4. Test reports of VOCs, benzene and TDI content of solvent-based coatings and solvent-based adhesives and different batches of products;

5. Pull-out test of expansion bolt;

6. Strength test report of dry-hung stone skeleton steel and stone panel;

7. Test report of external doors, windows and curtain walls for four sex tests;

8. Test report on compatibility and adhesion of structural adhesive;

9. Fire protection acceptance report; If the rectification opinions are put forward in the draft of the acceptance opinion, if the decorative part is involved, there should be a review record;

10. Indoor environmental quality inspection and acceptance report issued by a testing institution recognized by the national authority; These are all must-check items during engineering inspection and acceptance, and they are indispensable without a reputation.

The testing agency for building materials is the National Building Materials Testing Center.

The National Building Materials Testing Center is one of the 13 national comprehensive analysis and testing centers approved by the former State Science and Technology Commission in October 1984. After years of efforts and continuous development and improvement, the center has developed into a building materials industry, engaged in the analysis, testing, research and testing, and arbitration services of building materials and inorganic non-metallic materials.

The center is the only testing institution in China with comprehensive inspection capabilities for building materials products, one of the first 29 testing institutions for hazardous substances in decoration materials approved by the Certification and Accreditation Administration of the People's Republic of China, and a national testing institution for the testing and appraisal of scientific and technological achievements approved by the Ministry of Science and Technology and the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China.

Main Institutions:

The center consists of business department, quality assurance department, radioactivity testing department, building materials product testing department, air quality testing department, aluminum-plastic testing department, coating testing department, refractory testing center, chemical testing department, etc. The center has abundant human resources and high-precision, cutting-edge material research and testing and analysis technology, and has 78 employees, including 59 technicians and 32 professor-level senior engineers and senior engineers.

After years of construction and development, the center has a complete set of perfect and strict quality management assurance system, and all testing personnel have undergone strict training and are certified to work. And regularly participate in training and assessment, the implementation of effective control and strict management of all aspects that affect the quality of inspection work, so as to improve the quality management system of the center.

The above content refers to: Encyclopedia - National Building Materials Testing Center.

What is the technical document used to verify the conformity of building materials? Kiss! Hello, happy to answer your <>

1. Overall surface layer: base layer: base soil, ash cushion, sand cushion and sand and gravel cushion, gravel cushion and broken brick cushion, triple soil cushion and quadruple soil cushion, slag cushion, cement concrete cushion and ceramsite concrete cushion, leveling layer, isolation layer, filling layer, insulation layer layer:

Cement concrete surface layer, cement mortar surface layer, terrazzo surface layer, hardened wear-resistant surface layer, oil-proof surface layer, non-igniting (explosion-proof) surface layer, artesian plane layer, coating surface layer, plastic surface layer, overall surface layer of ground radiant heating. 2. Plate surface layer base: base soil, ash cushion, sand cushion and sand and gravel cushion, gravel cushion and broken brick cushion, triple soil cushion and quadruple soil cushion, slag cushion, cement concrete cushion and ceramsite concrete cushion, leveling layer, isolation layer, filling layer, insulation layer layer

Brick surface layer (ceramic mosaic brick, cylinder brick, ceramic floor tile and cement tile surface layer), marble surface layer and granite surface layer, row shed prefabricated plate surface layer (cement concrete plate, terrazzo plate, artificial stone plate surface layer), material stone surface layer (strip stone, block stone surface layer), plastic plate surface layer, raised floor surface layer, metal plate surface layer, carpet surface layer, floor radiant heating plate surface layer. 3. Wood and bamboo surface layer base: base soil, ash cushion, sand cushion and sand and gravel cushion, gravel cushion and broken brick cushion, triple soil cushion and quadruple soil cushion, slag cushion, cement concrete cushion and ceramsite concrete cushion, leveling layer, isolation layer, filling layer, insulation layer layer

Solid wood flooring, solid wood integrated flooring, bamboo flooring (strips, tile surfaces), parquet flooring surfaces (strips, tile surfaces), impregnated paper laminated wood flooring surfaces (strips, tile surfaces), cork flooring surfaces (strips, tile surfaces), wood panels for radiant floor heating. Extended material: I hope mine can help you <>

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