The quality acceptance methods and standards for cement blankets
General provisions
1.1 When the average temperature of the construction site during the day and night remains below 5℃ for five consecutive days or the lowest temperature is below 0℃, it should be clearly stated that winter construction has begun.
When the material strength has not reached 60% of the designed compressive strength, it should not be exposed to cold. When the raw materials are gradually cooled under the freeze-thaw cycle standard, the temperature should not be lower than 80% of the designed compressive strength.
Inspect new items
2.1 Before laying the composite material blanket, it is stipulated that the base material should be fully compacted. A simple measurement method is as follows: Use a 12mm chisel, apply a working pressure of 30kg, and insert it into the sand at least 5cm.
Total number of inspections: sampling inspection
Inspection methods: Observation and measurement with tools.
2.2 Drainage ditches and their sides shall be leveled as prescribed. The dimensional error of the trench section is unlikely to exceed 5cm. After the industrial base is leveled and the composite material blanket is laid, the flatness is measured with a 3-meter string, and the average deviation shall not exceed 20mm.
Total number of inspections: sampling inspection
Inspection method: Observation and measurement with a steel ruler.
2.3. The interval deviation of the specified anchor bolts is ±5cm; The construction deviation of the small screw interval project is ±2cm. No nails should be missing or missed, and the nails should be firmly fixed.
Total number of inspections: All inspected
Inspection method: Observation and measurement with a steel ruler.
2.4. The watering should be even and thorough until the color of the blanket darkens. No less than 9 kilograms per square meter (calculated based on a 10mm thick blanket), and watering is indispensable. Excessive irrigation does not affect the construction quality of the project.
2.5. The coating material should be evenly distributed and of uniform thickness. The mass ratio of concrete to water should be 1:3 to 1:4. There should be no missed or insufficient coating. 8
Total number of inspections: sampling inspection
Inspection method: Observation
2.6 The PVC drainage pipes for the drainage holes should be arranged in a 2m×2m plum blossom pattern, which cannot be ignored and should be assembled firmly.
Total number of inspections: All inspected
Inspection method: Observation and measurement with a steel ruler.
2.7 The specifications for the pre-embedded ports of the new type of cement blanket should meet the requirements: the total width of the pre-embedded slope at the top of the slope protection should be 1-2 meters, and the length of the pre-embedded slope at the bottom edge should be 50cm.
Total number of inspections: All inspected
Inspection method: Observation and measurement with a steel ruler.
2.8 The laying and assembly of raw materials should comply with the requirements of the construction design, be firm and reliable, have tight joints, and be flat and elegant.
Total number of inspections: All inspected
Inspection method: Observation and measurement with a steel ruler.
标题：How much is a square meter of cement blanket 地址：http://http://www.pebaohu.cn//content/?421.html
The address and phone number of the cement blanket manufacturer: West of the north end of Kangbo Avenue, Dezhou City, Shandong Province, 15963390500
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