With high bonding strength and good anti-slip performance, what makes the basement wall waterproof?

The composite waterproof system has the advantages of good integrity of the coating waterproof layer, no joints, and no water channeling; the thickness of the membrane waterproof layer is controllable, puncture resistance, and strong resistance to deformation.

The bonding strength and anti-slip performance of the currently used composite waterproofing system is not particularly ideal, so it is rarely used in basement vertical walls, slope roofs and other vertical parts

High-viscosity anti-skid composite waterproof system

The high-viscosity anti-skid composite waterproofing system is composed of a high-viscosity anti-skid waterproof coating compounded with a bituminous waterproofing membrane.

What is a high-viscosity anti-skid waterproof coating?

High-viscosity anti-skid waterproof coating is a one-component water-based waterproof coating prepared by polymer modified emulsified asphalt technology

01 High bonding strength

The excellent bonding performance is mainly manifested in two aspects:

① The bonding strength between the coating layer and the base surface is high; the traditional asphalt coating has a bonding performance with different base layers (concrete, steel, wood), but the bonding strength is not high, generally between 0.

②The coating layer and the composite waterproof membrane have high bonding strength.

02 Good anti-slip performance

The failure of the waterproof layer of the basement vertical wall is mainly manifested by the poor anti-slip performance of the waterproof layer, and the overall slip of the coil occurs when the groove is backfilled in the later stage
.
The good anti-slip performance of high-viscosity anti-skid waterproof coating is mainly reflected in two aspects:

1) The peel strength of the entire system is high.
The peel strength of the high-viscosity and anti-skid composite waterproof system is greater than 3.
0N/mm, which is more than 2 times the standard value of coil and coil strength;

2) The shear strength is high, and the shear strength when combined with SBS coils can reach more than 0.
2MPA
.

03 Lower modulus of elasticity

High-viscosity anti-skid coating is a kind of asphalt waterproof coating.
It has the characteristics of low elastic modulus of asphalt coating, which can effectively absorb the stress of the structural layer and maximize the protection of the entire composite waterproof layer from being damaged
.

04 Good construction performance

The high-viscosity anti-skid coating is a single-component water-based coating, ready to use when opened, without heating, and can be applied at 5-40℃, and can also be applied on wet base surfaces.
It can be applied by spraying or scraping and roller coating.
Among them, spraying The construction thickness can be up to 1.
0mm in one construction.
The introduction of spraying technology has greatly improved the construction efficiency of waterproof coatings, and the uniformity of the coating film has also been improved.
The construction area can reach 3000 square meters during spraying construction, which can greatly save labor costs and speed up the construction progress
.

High-viscosity anti-skid composite waterproof system

01 Waterproof structure method

High-viscosity anti-skid composite waterproofing system generally uses 1.
5mm thick high-viscosity anti-skid water-based rubber asphalt waterproof coating combined with 4mm thick SBS modified asphalt waterproofing membrane/3mm self-adhesive waterproofing membrane, of which the high-viscosity rubber asphalt waterproof coating is sprayed.
After the dry film of the coating film is dried, hot melt composite 4mm thick SBS modified bitumen waterproofing membrane or self-adhesive paving and self-adhesive waterproofing membrane
.

02 Waterproof node method

1) The method of closing the side wall
.
The height of the side wall of the basement should be 500 higher than that of the outdoor floor.
The closing part shall be fixed with a closing layer, and the asphalt-based sealing paste shall be used for sealing treatment
.

2) The method of pouring belt nodes behind the side walls
.
Apply a 1.
5mm thick high-viscosity anti-skid waterproof coating + non-woven fabric to the post-pouring belt as an additional layer.
The width of the additional layer should be greater than the post-pouring belt width +500
.

03 Construction technology

Construction process:

Grassroots cleaning→equipment debugging and test spraying (machine spraying construction)→detailed node treatment→first coating construction→second coating construction→third coating construction (if necessary)→inspection, acceptance→paving waterproof membrane→ Exhaust → lap joint and end treatment → inspection, acceptance → finished product protection

Key construction points:

After the basic cleaning is completed and the waterproof construction conditions are met, additional layer construction shall be carried out according to the standard requirements
.

Use 500mm wide polyester non-woven fabric (60～80g/㎡ is suitable) for reinforcement treatment at the yin and yang corners and construction joints
.
The specific construction measures are as follows:

1) First spray the high-viscosity anti-skid waterproof coating on the additional layer;

2) Pave the polyester non-woven fabric, compact and conform to the base coating to prevent hollowing, wrinkles, etc.
; the non-woven fabric overlap at the disconnection is not less than 100mm;

3) Spray the high-viscosity anti-skid waterproof coating again
.