Cement mortar waterproof layer practice? How to construct waterproof layer of cement mortar?

Speaking of cement, we are all familiar with it. In the process of cement construction, the common construction technology is the waterproof layer of cement mortar. People will use cement as waterproof layer, so this material is very popular. However, in the process of making cement mortar waterproof layer, it is essential to correctly grasp how to construct it, because it is the key step to ensure the smooth construction quality. Speaking of cement, we are all familiar with it. The common construction technology in the process of cement construction is the waterproof layer of cement mortar. People will use cement as waterproof layer, so this material is very popular. However, in the process of making cement mortar waterproof layer, it is essential to correctly grasp how to construct it, because it is the key step to ensure the smooth construction quality. The specific knowledge is introduced as follows:

Cement mortar waterproof layer practice?

1. Cement mortar waterproof layer cleaning base: cleaning loose concrete, mortar, etc. On the cushion layer, and remove the protruding bumps.

2. Brush the cement slurry: the mixing ratio of cement: waterproof oil = 1: 0.03 (weight ratio), the waterproof layer of cement mortar is mixed with appropriate amount of water to make porridge, spread it on the ground and sweep it evenly with a broom.

3. Coat the bottom mortar: the bottom mortar is 1: 3 cement mortar, and waterproof powder accounting for 3% ~ 5% of the cement weight is added. The mixed mortar shall be leveled with a ruler, the waterproof layer of cement mortar shall be leveled with a wooden trowel and leveled with an iron trowel.

4. Brush the cement slurry: brush the cement slurry once every 1d at room temperature, and add an appropriate amount of water according to the mixture ratio of cement: waterproof oil = 1: 0.03 (weight ratio).

5. Surface mortar: After brushing the cement slurry, brush the surface mortar, and the bottom layer is used for matching and practice.

6. Brush plain cement slurry: brush plain cement slurry for the last time after the initial setting of the surface mortar (not too thin to meet the wear-resistant requirements). The mixing ratio of cement mortar waterproof layer is cement: waterproof oil = 1: 0.0 1 (weight ratio), and appropriate amount of water is added to make it closely combine with surface mortar and calender.

7. Maintenance: After the ground has a certain strength, the surface should be covered with sacks or straw bags and watered frequently. Generally, the curing time is 7d, depending on the temperature conditions, the slag portland cement should not be less than 14d, and it should not bear hydrostatic pressure during curing. The ambient temperature for winter maintenance should not be lower than +5℃.

How to construct waterproof layer of cement mortar?

1. Plain lime layer plays the role of bonding and waterproofing with the base. Because of repeated scraping, the pores on the surface of the base are blocked, the impermeability and waterproof ability are enhanced, and the second layer of cement mortar is closely bonded with the base, thus improving the integrity.

2. The construction technology of cement mortar waterproof layer is to apply a cement mortar layer before the solidification of this layer of plain ash, so that the two layers are firmly combined, which plays the role of the whole waterproof skeleton and is also the protective layer of plain ash, which makes the cement fully hydrated, closely crystallized and enhanced in impermeability.

3. The surface of the rough and wet cement mortar layer is coated with a layer of plain lime, which is mainly waterproof, so that the cement can be hydrated more fully, crystallized more tightly, no cracks are generated, the capillary network of the waterproof layer is cut off, and the impermeability is greatly enhanced.

4. The cement mortar layer plays the role of waterproofing and protecting the plain ash layer, and is also the skeleton of the waterproof layer. Before the third layer of plain ash is solidified, it is plastered and compacted, which is closely combined with the plain ash layer and bonded with the first three layers to increase the density.

5. Brush a layer of cement slurry and polish it with the fourth layer of cement mortar to make the surface smooth, block the pores on the surface and enhance the impermeability of the waterproof layer. The five-layer waterproof layer of cement mortar is a kind of rigid waterproof layer with division of labor and cooperation to resist water plugging and infiltration, so its application scope is still limited to some extent.

Summary: Here is a brief introduction to the construction knowledge of cement mortar waterproof layer. What I want to say is that during the construction of cement mortar waterproof layer, you have mastered a basic technology, so you don't have to worry about the waterproof layer not being finished. The important thing is that you can finish it smoothly within the time limit. I hope the above introduction can help you.