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The quality inspection items for the cement concrete surface layer are as follows: The measured parameters for the cement concrete surface layer include the flexural strength of the cement concrete slabs, their flatness, slab thickness, the depth of the anti-slip features on the cement concrete pavement, the height difference between adjacent slabs, the straightness of the longitudinal and transverse joints, the lateral deviation of the center line of the cement concrete pavement, pavement width, vertical profile elevation, and pavement slope. http://www.bjzii.com/d/file/p/2020/04-11/d14ebaaef76abfb7c610473fff5b5072.jpg Inspection of cement concrete surfaces: 1. The quality of the base layer must meet the specified requirements, and a deflection test should be conducted; the overall modulus of the base layer, as determined through calculations, must satisfy the design specifications. 2. The strength, physical properties, and chemical composition of cement shall comply with the provisions of **standards and relevant specifications. 3. Coarse and fine aggregates, water, admixtures, and joint fillers shall meet the requirements of design and construction specifications. 4. The construction mix ratio shall be calculated based on the actual strength of the cement determined on-site, and the optimal mix ratio shall be selected through testing. 5. The location, specifications, dimensions of the joints, as well as the installation of load-transferring bars and tension bars, shall meet the design requirements. 6. Anti-skid measures such as texturing of the road surface or creating grooves with machinery shall have a structural depth that meets the requirements of the construction specifications. 7. The surface layer should meet smoothly with other structures; the elevation of the top surface of the inspection well cover should be 1–3 mm higher than that of the surrounding road surface. The elevation of the rainwater inlets is set 5~8 mm lower than that of the road surface, ensuring no water accumulation at the edges of the road surface. 8. After the concrete pavement is laid, it must be cured in accordance with the requirements of the construction specifications. Article keywords: What are the quality inspection items for cement concrete pavements? What are the specific steps for using the sand pouring method to measure compaction and density?