05 material and stone chips are the same material 5- 10 mm.

12 material10-20mm

13 material10-20 20-30mm two materials are mixed.

24 material 20-30 30-40mm mixture of two materials.

The finished product is five kinds of materials, and it is six kinds of materials in factory production.

Extended data:

Preventive measures for sand and gravel

The ex-factory quality certificate and test report of sand and gravel should be consistent with the physical evidence between objects. The ex-factory quality certificate must be stamped by the quality inspection department of the manufacturer, and the test report must be signed by the relevant personnel of the testing unit and stamped with the official seal of the unit.

Users must carefully check whether the measured values in the product factory certificate and test report meet the standards specified in the specification. The test report should have a test number to verify with the relevant data of the laboratory.

The test report should have a clear conclusion and a complete signature and seal. For the unqualified test report, the qualified test report or the handling report of double specimen reinspection shall be attached, and the unqualified test report shall not be withdrawn or destroyed.

Construction materials related to sand and gravel factory certificate and test report include construction organization design, technical disclosure, negotiation records, construction logs, concrete and mortar mixture ratio application forms and notices, compressive strength reports of concrete and mortar test blocks, hidden inspection records, quality acceptance records, as-built drawings, etc.

Therefore, the certificate and test report should be consistent not only with the actual project and the parts used, but also with the above construction materials.

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