Waterproofing construction joints

erection of any structure is not without construction joints.Such joints are the "weak point", iecan pass moisture and air currents.To avoid these phenomena and provides waterproofing construction joints.

This is a series of activities aimed at trying to make the construction waterproof.This process is simply indispensable in the construction of swimming pools and other tanks and buried structures.Of great importance is the waterproofing and construction of residential and industrial buildings.

Today waterproofing is done by various methods, depending on the underlying condition.

Factors that should be considered when choosing a method of sealing joints of building structures

1. weld type in the degree of mobility (mobile and fixed).
2. magnitude of the expected load.
3. Frequency of exposure.
4. presence or absence of the influence of aggressive chemical environments.
5. The maximum and minimum temperature and the extent of its extremes.
6. soil moisture, which is located on the building.
7. seam location and its accessibility.
8. structure facilities and the quality of building materials.
9. nature of the work (creating a fresh suture or reconstruction).
10. Desired characteristics (aesthetics, water resistance, increasing service life and so forth.).
11. budget measures and the terms of its implementation.

Waterproofing protection of joints of concrete, brick and stone structures

basic techniques and elements for waterproofing construction joints

1. Using swelling strings.

Such seams are of different origin:

• acrylate;
• bentonite;
• of hydrophilic rubber.

Advantages

• ease of installation;
• suitable for handling communication inputs and concreting joints;
• applicable for reservoirs of the device, and to isolate the buried structures;
• perfectly exploited in conditions of constant humidity.

Disadvantages

• need to respect the minimum time interval between the laying of the cord into the seam and its subsequent concreting;
• only suitable for sealing joints of fresh new buildings;
• not used for the treatment of joints;
• the complete drying cords decrease in volume;
• not like tough and salt water, as well as the temperature below 0 ° C;
• cords of bentonite clay is not designed for high pressures;
• thickness of the walls of structures, in which the data can be used cords is strictly limited (to 20 cm).

2. Using the key (profiles) for concreting.

Advantages

• withstand high pressure;
• applicable in the construction of new buildings, and in the processing of joints with displacement;
• a wide range of different options.

Disadvantages

• difficult seams processing of ready-made structures (but possible!);
• under increased pressure of water may be a little leak.

3. The use of tapes and profiles, which are mounted on the already finished construction (using glue or clips).

Advantages

• well established in terms of the pressing action of the water;
• it possible to obtain perfectly water-tight seal;
• can be used for small thickness of the walls of building structures.

Disadvantages

• for quality installation is necessary to eliminate the flow of water at the time of isolation;
• tape can not be glued to the outside of the tank and on the inner side of the sunk constructions;
• bonding surface should be carefully prepared;
• complicated installation process.

4. Injection into the cavity of the joint hardening of polymer resins, such as:

• acrylic;
• polyurethane;
• epoxy.

Advantages

• opportunity to achieve a high degree of water resistance of joints;
• versatility (suitable for repair work and for new buildings; for tanks and for buried structures);
• does not require stopping the flow of water during installation.

Disadvantages

• method in its pure form is not suitable for the treatment of joints;
• there is a limitation on the thickness of the wall construction.

This process is often carried out by the installation during the construction phase special Inject systems.

5. Crimping hard mixes (non-shrinking or expanding) such as cement.

Advantages

• versatility (suitable for repairing old welds and to handle new construction joints, and tanks, and for buried structures).

Disadvantages

• not suitable for moving joints.

6. Application of elastic polymer sealants.

Advantages

• to seal joints with varying cross-section and irregular contours.

Disadvantages

• not suitable for use at high pressures of water in wide joints;
• sealants do not maintain permanent contact with water.

However, it should be noted that none of the above elements are used for waterproofing, as a standalone tool.Almost always appropriate to use a complex of several such components.The effectiveness of this complex is dependent on the proper selection of equipment and materials for waterproofing, taking into account the objectives and operating conditions.Recommend to a single universal combination is not possible because, as the original data are always different.And, therefore, to solve the problem must be approached individually.You just need to take into account the technical characteristics of each method and waterproofing features equip seams.

Waterproofing own hands

How do waterproofing inter-panel joints

1. Clean the seam of dust, residue or traces of old building materials insulation (in case of repair).
2. carefully crafted interior of the seam waterproof primer to improve the adhesive characteristics of the surface.
3. Wait until completely dry.
4. Treat seam construction foam and insulate them with other PE foam pads.
5. applied over the seam sealant or mastic, using a putty knife or a gun.At the same time, make sure that the seam was concave rather than convex.
6. When working with external seams, glued sealing tape.

How to make waterproof joints

Purpose of welds - lowering effects of temperature extremes and manifestations of seismic activity.For waterproofing of joints traditionally used gravel and bitumen.

1. Spend a waterproofing in the dry season.
2. Before starting work, the most visushite walls in the joints.
3. Fill the seam with a thin layer of dry gravel.
4. top of the rubble fill the bitumen so as to fill all voids.
5. Repeat the last two manipulations to complete the seam filling.

Today it is widely used latest gelling materials.They nalezhno protected from falling water, even at default condition "bend the dry joint".