BTL™ geomembrane projects

Water management infrastructure, Mórahalom, Hungary

Within the framework of the "Elaboration of a sustainable water management infrastructure in the Hungarian-Romanian Cross-border (ESUWATER)" project, a water retention basin had to be built on the outskirts of Mórahalom. The basin provides protection against excessive amount of water in case of waterlogged periods, while it acts as an irrigation pond during droughts to provide water for irrigation and support for habitats in still waters.

The actual task was to line the embankments of a 10 acre big area. The lining material had to be installed vertically in a trench, on the slopes.

In terms of installation, the huge advantages of BTL™ liners compared to HDPE, were flexibility, extremely low weight and high material strength.

The approx. 5000 m²s of BTL™-24A liner proved to be a perfect choice for the purpose, according to the installer "it was very easy to work with the material, it helped a lot that the basin's almost 2 km long circumference could be lined with only 3, continous pieces of liner".

Agricultural fire water pond, Dorolt, Románia

In Dorolt the lining of a plant's fire water pond became necessary. The customer was looking for a solution that can be installed in a short period of time while providing a strong a long-lasting result.

From a number of lining materials, the BTL™-24A was chosen as it's low weight, high material strength made it possible to finish the installation easier and quicker on the friable soil.

The material properties of the BTL™-24A made it possible to line the 810 m² big area with a single, prefabricated panel. The lining material was shipped to the site at low transportation fees and installed safely under a short period of time.

Pond, Dunaharaszti, Hungary

In Dunaharaszti, a pond previously lined with soft PVC, had to be lined again, because the previously installed liner teared apart at several locations due to shrinkage. As the liner had to be anchored to the edge of the pond with screws, the solution had to ensure that it won't replicate the previous problem.

The ouststanding strength of the BTL™-24A geomembrane and it's minimal thermal expansion ratio made it an ideal choice on this occasion as well.

During the installation the BTL™-24A was installed directly on the former liner. The complex shape of the pond was lined with just a few, prefabricated panels welded together onsite.

Agricultural fire water pond, Mesterszállás, Hungary

In Mesterszállás a company involved in agriculture was looking for a solution to line a fire water pond. The pond has three, long suction pipes.

The BTL™-24A liner proved to be an ideal choice because of it's low weight and high strength. The lining was done using a single, prefabricated panel.

The geomembrane was installed on a 200 g/m² geotextile layer, then prefabricated pipe boots were installed to seal the pipes.

Agricultural fire water pond, Tiszaszentimre, Hungary

The lining of a fire water pond became necessary at an agriculture company's premises, in Tiszaszentimre. As the pond occupies the smallest possible area, the needed amount of water is primarily ensured by the pond's depth.

As such, the pond's bed is similar to a ditch, making the BTL™-24A geomembrane an ideal choice.

Only one piece of a 480 m² big panel had to be prefabricated, which could be installed quickly and efficiently after the installation of a 200 g/m² geotextile layer.

The approx. 24 meters long and 4 meters deep pond's lining was done by 3 people only in a period of 2-3 hours.

Lining of a detention pond and biomass processing area, Texas, USA

In Texas a compost facility began to accept and process biomass solids generated from wastewater treatment plants.

According to the regulations the processing area had to be lined with a geomembrane, and a detention pond also had to be built and lined.

After considering a number of materials, BTL™-24A was chosen as it's a light, high-performance material, that can be prefabricated into large panels. The project started with prefabricating approx. 3 600 m² big panels (59 m x 61 m). Thanks to the preparations, the lining of the 12 000 m² big area took only 4 hours!

The installer is used to work with thicker membranes, hence they were initially concerned with the lightweight structure of the BTL™ geomembrane. In the end they were very pleased with the result. The Leister Twinny T used for welding, worked very well with the BTL™-24A geomembrane, the installer described the liner as "tough as nails". The project was completed on time and within budget.

Road construction, Texas, USA

An approx. 11 km long road - near the I-35, a major highway in Texas - is prone to undulations in the pavement owing to expansive clay beneath the road surface. In addition this area experiences temperatures between -18˚C and 43˚C and frequent changes in moisture content depending on weather conditions. As a result the road is subject to continous repairs since its construction.

The local Department of Transportation was looking for a long-term solution instead of carrying on with the continuous repairs, that minimizes the significant moisture changes in the pavement subgrade. The chosen BTL™-24N geomembrane exceeded the original specifications and had several cost advantages over alternative materials. At the end it was selected, because:

• Material strength
• Water impermeability
• Lightweight structure
• Portability
• Puncture resistance
• Soil stabilization on slopes
• Cost savings

To maximize moisture control the geomembrane was laid down on a base of lime stabilized subgrade and would be covered with a layer of crushed stone. The 61 m long and 15-18 m wide, prefabricated panels transported to the site were used to line an area of approx. 58 500 m².

Landfill cover, Virginia, USA

A solution was needed to cover a landfill in Virginia, USA, that would be able to stand up to the harsh conditions over two years of exposure.

The municipality had a very rigid specification that required extensive testing and supporting documentation in order to demonstrate the long term viability of the geomembrane.

The BTL™-20N geomembrane fulfilled the requirements in every aspect and thanks to it's strength, durability, chemical and puncture resistance it was perfectly capable of the job. During the project approx. 31 400 m² of geomembrane was installed.

Coal mine, British Columbia, Canada

In a Canadian coal mine large quantities of coal had to be contained. The main goal of the project was to protect the environment from the infiltration of toxic chemicals from coal and byproducts into the soil over a 42 200 m² big area. In addition two fresh water lagoons were required as well.

The weather conditions (as low as -51°C in the winter and up to 35°C in the summer) and the site conditions required a solution where the BTL™-40A was the perfect answer.

During the construction the subgrade was smooth drum-rolled, then 450 g/m² geotextile was layed down. The installation of BTL™-40A was followed by another layer of 450 g/m² geotextile and finally 46 cm of soil was placed on top.

The geomembranes were installed on smooth drum-rolled subgrade for the fresh water lagoons. The geomembranes were left exposed for this application.

BTL™ geomembranes proved to be an ideal choice because of their exceptional material properties, low cold crack numbers and fast deployment (over 60 cm of snow fell a few days after the installation). Thanks to the prefabricated panels, around 90% of the seaming was completed in advance, which resulted in significant cost savings for the customer by reducing the amount of work that had to be done in the field.