Concrete insulation cement blanket

Hanji cement blanket laying construction

1 Preparation

First, plan and measure to ensure a certain slope, so that the water can flow smoothly from the upper end to the lower end; second, after the construction site is cleaned and leveled, the construction line is set according to the design drawing, and the drainage slope is remeasured.

2 excavation

Set up the construction line according to the design requirements, the two sides of the ditch need to be leveled, and the slope inside the ditch must be free of empty soil and voids. The water damage parts shall be tamped, except for the debris and gravel in the slope. If necessary, use Sanqi lime soil for tamping, or grouting for reinforcement and then close it. It is required that the treated parts are stable!

3 laying

The new material cement blanket can be laid vertically and horizontally. Please be sure to flatten the substrate, otherwise it will affect the appearance quality!

4 Seam treatment

 1. Dig the pits with a width of 10 cm and a depth of twice the depth of the cement blanket at the overlapping positions of the two adjacent cement blankets. Put the cement blanket joints at the overlapping positions and flatten them.

 2. Press the upper cement blanket on the lower cement blanket in the direction of the water flow, and the overlap should not be less than 10cm.

 3. Evenly apply sealant on the joints.

 4. Fix two cement blankets with Φ 5 * 38mm stainless steel screws.

5 Groove treatment

Use rivets to fix the edge of the material on the edge of the ditch, and also use rivets to fix the overlap. After fixing, cover the edge with soil.

6 Water curing

Before the watering, the entire paving needs to be inspected and accepted, and only after passing the water! Each square needs to be watered 9kg (thickness is calculated by 10mm) to be poured through, and it is necessary to pour it evenly from the edge to the middle

For watering, it is best to use spraying, with a flow rate of 4000ml / min until the cement blanket becomes darker. Do not use water column with high pressure! It is forbidden to step on after watering. When the temperature is ≤5 ℃, heat preservation measures should be taken; when the average day and night temperature is higher than 30 ℃, the surface should be covered with plastic film or geotextile to keep it moist.

Later maintenance and precautions

1. This material is used in the central region of China, with a design life of more than 50 years. In order to extend the life, it is recommended to maintain the material every 5-10 years. Brushing a layer of cement slurry on the surface of the material blanket can effectively extend the life of the material.

2. After the strength of the material reaches 10.0MPa, it can bear the load of personnel and light construction machinery.

3. After the material is poured into water, it must not be knocked or pulled until the final strength is formed; sharp objects must not be used to knock on the material.