Elastofalt Spraykote 90 Sprayed bridge waterproofing
Liquid rubber for bridge waterproofing
Install sprayed liquid rubber on bridges
Works on waterproofing of bridge structures in Ukraine
Real Project
Project Data
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Ukraine, Lviv region
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Construction: bridge structures.
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Base: concrete.
- Gene. contractor: Motorway-South.
A task
It is required to perform waterproofing of the horizontal concrete slab of the bridge under the asphalt.
Solution
For waterproofing bridge structures in the Lviv region, it was decided to use an elastic, seamless, sprayed, two-component liquid rubber, Elastofalt Spraykote 90.
Elastofalt Spraykote 90 bridge liquid rubber
Why Elastofalt Spraykote 90?
High elasticity bitumen-latex membrane
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Engineering structures are located in the area of the Carpathian Mountains. Mountains are a seismological zone and bridges in the Carpathians are subjected to high dynamic loads.
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A large number of cycles of temperature changes throughout the year.
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Possibility of earthquakes.
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High intensity of car traffic.
- High impact of mountain rivers during floods on the supporting structure of the bridge.
Highly elastic waterproofing for bridges
Seamless waterproofing bridge system
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Bridge waterproofing Elastofalt Spraycoat 90 creates a monolithic, seamless, protective structure.
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Particularly important is the seamlessness of the waterproofing system, in the context of the impact of dynamic loads on the bridge.
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If there are seams in the waterproofing coating, there is a possibility of their divergence during operation, which leads to the penetration of moisture into the concrete body.
Read more about the types of bridge waterproofing in our blog, the world of technologies " Waterproofing of bridges in Ukraine " or the world of technologies " Elastofalt Spraykote 90 Waterproofing of bridges "
Waterproofing of bridges in Western Ukraine
High adhesion waterproofing system
A two-component bituminous system that "sticks" very strongly to the concrete base, thereby increasing the life of the bridge.
Temperature resistance
A final layer of asphalt is laid on the waterproofing coating of liquid rubber, which is protected by a layer of thermoset geotextile + a protective layer of bituminous emulsion.
Efficient application of bridge waterproofing
Spraying liquid mastic, allows you to apply the material on uneven and rough concrete bases.
Does not require a perfectly even state of the concrete surface.
Spraying bridge waterproofing on uneven ground
Stages of work on the waterproofing of the bridge
Foundation preparation
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Surface cleaning.
- Dedusting.
Padding
Application of a bituminous primer to increase the adhesion of the protective coating to the substrate.
Liquid rubber spraying
With the help of mechanized equipment, in one layer, the main layer of waterproofing is laid at a rate of 5.3 kg/m2.
Laying a protective coating of geotextiles
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On the seamless waterproofing of the bridge, heat-fixed geotextile with a density of 140-150 is laid.
- The protective layer of thermally bonded geotextile allows the main waterproofing layer of Elastofalt Spraykote 90 to withstand the high temperature of the asphalt and its load, as well as the mechanical impact of road equipment when laying the asphalt concrete mixture.
Seamless waterproofing of bridges
Spraying a protective layer of bitumen-emulsion mastic
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On geotextiles, a protective layer of mastic is applied at a rate of 0.75 kg/m2.
- According to the protective coating, it is more convenient to lay asphalt.
Physical and mechanical characteristics of liquid rubber Elastofalt
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Bulk weight of the emulsion |
1020 kg/m 3
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Tensile strength at 0 ºС |
130 kg/ cm2
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Tensile strength after ultraviolet irradiation for 1000 hours |
120 kg/ cm2
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Tensile strength after immersion in water for 720 hours at 50 ºС |
126 kg/ cm2
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Conditional strength at break |
0.9 MPa
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Elongation at t 20 ºС |
1200%
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Flexibility at low temperature |
30 ºС
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Return to original position at 1000% stretch |
over 85%
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Water resistance, 4 mm |
0.35 MPa
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Heat resistance, not less |
100 ºС
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Adhesion strength to the base |
0.86 MPa
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Summary
Such a bridge waterproofing system gives our structures a chance to extend their service life without current repairs.
Thus, we save money for Ukrainian taxpayers, and for our officials, we reduce the physical load.
Liquid rubber in Ukraine
