New magic cement blanket

Hanji cement blanket quality acceptance methods and standards

General provisions

1.1. When the average day and night temperature on the construction site is below 5 ° C for 5 consecutive days or the minimum temperature is below 0 ° C, construction in winter should be determined.

1.2 When the material strength does not reach 60% of the design strength, it shall not be frozen. When the material immersed in freezing and thawing conditions begins to be frozen, it shall not be less than 80% of the design strength.

Test items

2.1 Before laying the composite cement blanket, the base must be fully tamped. The simple measurement method is: use Φ 12mm steel brazing, use 30kg pressure, insert the soil body less than 5cm.

Number of inspections: random inspection

Inspection method: observe and measure with tools.

2.2. The bottom of the ditch and the side of the ditch are required to be flat; the deviation of the ditch cross section size is not easy to exceed 5cm. The base is leveled. After laying the composite material blanket, the flatness is measured with a 3m string, and the average loss is not more than 20mm.

Number of inspections: random inspection

Inspection method: observe and measure with steel ruler.

2.3. The error of anchor spacing is required to be ± 5cm; the construction error of screw spacing is ± 2cm. There should be no missing or missing nails, and the nails should be firmly fixed.

Number of inspections: all inspections

Inspection method: observe and measure with steel ruler.

2.4 Watering should be even and watered until the blanket becomes darker. Each square meter is not less than 9kg (calculated by 10mm thick blanket), and watering is not necessary. More watering does not affect the quality of the project.

2.5. The slurry must be uniform and the thickness should be uniform. The cement: water mass ratio is 1: 3 ～ 1: 4. There should be no missing brushes or fewer brushes. 8

Number of inspections: random inspection

Inspection method: observation.

2.6. The PVC drain pipe of the drainage hole shall be arranged in a plum shape of 2m × 2m, shall not be omitted, and shall be installed firmly.

Number of inspections: all inspections

Inspection method: observe and measure with steel ruler.

2.7. The reserved size of the end surface shall comply with the regulations: the top surface of the side slope shall have a width of 1-2m, and the bottom surface shall have a length of 50cm.

Number of inspections: all inspections

Inspection method: observe and measure with steel ruler.

2.8、材料铺设及安装应符合施工设计的规定，且稳固牢靠，按缝严密，平整美观。

检查数量：全数检查

检验方法：观察和用钢尺测量。

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