3) The manufacturer shall submit the following technical documents when the steel structural members leave the factory: a) Product quality certificate; b) For the construction drawing of steel structure fabrication and processing, if there is any design change, there should be a change negotiation document, and the modified part should be indicated in the drawing; c) Quality certificate and test report of steel and other connectors used; d) Test and identification data of new materials and processes; e) Ex-factory certificate of components; f) List of components to be shipped.
5.
3.
2.
Concrete admixtures 1) must have the quality certificate of the manufacturer, including the manufacturer’s name, variety, packaging quality, delivery date, performance and use instructions.
Steel fittings used in steel structures 1) must have quality certificates, Chinese marks and inspection reports, and their performance should meet the requirements of the design documents and the contract.
1.
Generally, the cement can be used only after the three-day strength re-test report is qualified; 4) Cement retest items mainly include compressive strength, flexural strength and soundness.
If there is a problem with the quality of cement, it shall indicate the project part used and the quality requirements that will not affect the part under the degraded use condition after the written confirmation of the engineering technician; 7) The cement type, mark number and test number indicated on the concrete test mix sheet and concrete test block test report shall be consistent with the contents of the cement factory certificate or the re-inspection report.
Sand and stone 1) shall have factory quality certificate and product performance test report; 2) The sand and stone used in the project shall be sampled and tested according to the origin, variety, specification and batch size according to relevant specifications; 3) If the test results of sand and stone do not meet the quality standards, they should not be used in principle.
Performance test shall be conducted for new materials before use; 2) The qualification shall be determined in accordance with Concrete Admixtures GB8076, Technical Code for Application of Concrete Admixtures GB50119 and other relevant environmental protection regulations.
Cement 1) The cement shall have the manufacturer’s factory quality certificate and test report (including factory type, variety, strength grade, production date, factory number and test number; including the manufacturer’s three-day test report and 28-day reinforcement report); 2) After the cement enters the factory, the supervisor shall check the packing and marks of the cement, and check whether the packing and marks are consistent with the factory inspection report of the cement; 3) Re-test must be carried out before use.
If there are provisions in the acceptance specifications or there are doubts about the quality, mechanical property tests and chemical composition and compatibility tests should be carried out according to the specifications; 2) The friction surface of high-strength bolts shall be subject to anti-sliding coefficient test according to the regulations, and the high-strength bolts shall be subject to strength test according to the specifications.
If there is any problem in the first material retest, the sampling shall be doubled, and the two test reports shall be retained at the same time when they are qualified.
4.
If necessary, test the setting time; 5) If the cement is subject to rapid test, the qualification judgment shall be based on the 28-day standard curing strength; 6) The cement test sheet shall have the test conclusion.
4) For the formed steel bars processed in the factory, there shall be a factory certificate and a steel bar factory certificate issued by the processing unit, on which the number and test date of the steel bar retest test sheet shall be indicated; 5) The appearance inspection records of high-strength steel wire and steel strand used for prestressed concrete shall be made batch by batch, and the mechanical property test shall be carried out by sampling according to relevant regulations; 6) The items in the reinforcement test sheet shall be filled in completely, and the test conclusion shall be provided.
The re-test batch shall comply with the provisions of the current construction quality acceptance specifications.
8.
The inspection contents include impermeability, tension, flexibility and heat resistance; 4) Asphalt: there shall be the production place, variety, label and report of asphalt.
Waterproof materials 1) The following 8 types of waterproof materials shall be examined for product license: chlorinated polyethylene waterproof roll, neoprene waterproof material EPDM sheet, elastomer asphalt waterproof roll, plastic asphalt waterproof roll, petroleum asphalt paper-based asphalt felt, polyurethane waterproof coating, water-based asphalt base waterproof coating, water-based PVC tar waterproof coating; 2) There shall be product certificate, performance test report and retest test report (multi-component materials shall be provided with mix proportion description); 3) The linoleum shall be provided with ex-factory quality certificate, including various technical indicators such as variety and mark, and shall be subject to sampling inspection.
Rebar 1) Rebar shall be provided with factory quality certificate and test report, and mechanical property test shall be conducted according to relevant standards; 2) Imported reinforcement shall have mechanical property test, chemical analysis report and weldability test report; 3) For frame structures with seismic fortification requirements, the strength of the longitudinal load-bearing reinforcement shall meet the design requirements; When there are no specific requirements in the design, for the seismic grade I and II, the measured value of strength obtained from the inspection shall meet the following requirements: the ratio of the measured value of tensile strength of reinforcement to the measured value of yield strength shall not be less than 1.25, and the ratio of the measured value of yield strength of reinforcement to the standard value of strength shall not be greater than 1.3.
The supervisor shall conduct accounting when reviewing the reinforcement retest report.
7.
The items that must be tested are penetration, softening point and elongation; 5) The performance of the new waterproof material must meet the design requirements, with product identification certificate, production license, factory certificate, quality standard and construction process requirements, and sampling re-inspection records.
Anti-corrosion, insulation and thermal insulation materials shall be provided with product certificates, performance test reports and necessary performance retest reports (in accordance with the specifications for construction quality acceptance of roof works)..
After technical measures are taken for treatment, there should be a retest report and a written approval procedure.
Bricks, blocks and other masonry materials 1) The masonry materials mobilized shall have factory quality certificates and product performance test reports, and the supervisor shall verify whether the identification of the masonry materials is clear and effective; 2) The wall materials must be retested before mobilization and use, and the retest batch should meet the provisions of the Code for Acceptance of Construction Quality of Masonry Works; 3) When the material of masonry materials is in doubt, samples shall be taken for retest.
6.
Welding rod 1) The welding rod shall have production certificate; 2) Baking records shall be kept for those that need to be baked.
