Water Management

Concrete Cloth™ (CC) Geosynthetic Composite Cementitious Mat is ideal for a number of water management applications. It will set under water (including seawater), ideal in situations where water is already present or it would be difficult to dewater the area. Concrete Cloth can be installed in a variety of weather conditions so that you do not have to let the weather set back your project timeline. Concrete Cloth is chemically resistant, has excellent weathering performance and will not degrade in UV. The PVC backing ensures that the material is completely water proof and chemically resistant. 150 mm of poured concrete can be replaced with just 8 mm for many surfacing applications. Material savings of 95% can be achieved for a typical construction project.


lagoon

In December 2013, Concrete Cloth™ (CC) GCCM* was used to line a water lagoon at a mine in Albania, Colombia, that supplies the mine water trucks for the daily road irrigation. The lagoon lining had to accommodate the existing sets of pipework; one at the top that fed water into the lagoon, and the others at the base which allowed the irrigation trucks to extract water when needed. Concrete Canvas GCCM was able to provide an excellent level of impermeability and allow the infrastructure pipework to be integrated easily. The laborers had to install under high temperatures so the speed of install reduced the risk of dehydration and sunburn.
 
 


Ditch Lining

In January 2014, Concrete Cloth™ (CC) GCCM* was specified as an erosion protection liner for a leat at Cynrig Hatchery. The leat was used to direct overflow from the river Cynrig, a tributary of the River Usk. The overflow posed a risk to the hatchery’s stocks of juvenile salmon. The leat had sustained damage and erosion over time; its original wooden lined face and an adjoining rock bed was leaking into a nearby reed run and threatened the hatchery’s infrastructure. CC5 had the flexibility to negotiate existing pipe work as well as accommodate a concrete base that was unearthed at the foot of the ditch. A total of 270sqm of CC5 was used in the project, which was completed by 3 workers in less than five hours.


hatchery

In April 2014 Concrete Cloth™ (CC) GCCM* was used for emergency remediation of a concrete irrigation ditch at a lemon farm located in Pica, 90km east of Iquique, Chile. On the 1st of April 2014, a 8.2 magnitude earthquake struck off the coast of Chile. The force of the earthquake broke apart the farm’s existing poured concrete irrigation ditch, cracking it in several places and making it unusable. This posed an immediate threat to the lemon trees and therefore the livelihood of the farmers. 70sqm of CC5 was installed by a team of 4 in one afternoon. The speed of installation resulted in the lemon trees and the farmer’s business being saved.
 
 


Willow Creek

Walter Energy, specified Concrete Cloth™ (CC) GCCM* as a protective liner for a large carrier ditch, directing mining industrial waste water from Willow Creek mine to a nearby settling pond. The lined ditch had to be as water proof as possible, handle freeze/thaw conditions, and be easy to repair. The carrier ditch was 10.5-12 meters wide, between 3 and 5 meters deep and approximately 650 metres long. The overall size, performance requirements of this particular application, as well as the cost potential meant that Ledcor were reluctant to use Shotcrete. The contractors completed the work on schedule in under six weeks, installing over 10,000sqm of CC in a remote site and in difficult weather conditions.
 


Pogo Mine

In September 2014, Concrete Cloth™ (CC) GCCM* was used to remediate a drainage ditch at Pogo Mine, Alaska, USA. The ditch prevents surface and storm water coming into contact with the mining tailings field. Due to the location and terrain there are challenges with storm and surface water management. 2 miles of shotcrete lined ditches had been installed in the previous two years. Storm water had undermined the ditch which, with freeze-thaw cycles and heavy rain caused extensive cracking of the shotcrete. CC allowed the installation in weather conditions prevent the use of conventional concrete. Additionally CC will negate the costly maintenance associated with other drainage solutions.


Ditch Lining

In February 2012, Concrete Cloth™ (CC) GCCM* was specified to line a ditch that would channel irrigation water away from a mineral transport pipeline owned by the Los Pelambres Mining Company. Site access for plant and machinery was limited and the project had time constraints due to upcoming work on an archeological site adjacent to the proposed location of the ditch. CC was deemed to be the perfect solution to these problems due to its portability, speed of installation and ease of use in difficult to access areas. A 14-man installation team were able to complete the 125sqm ditch in four hours, with little training and readily available hand tools. The nearby archaeological site was undisturbed and the mining company was impressed with the ease and speed of installation.


*Geosynthetic Composite Cementitious Mat


Concrete Cloth Characteristics

 
Concrete Cloth is a flexible cement impregnated fabric that hardens on hydration to form a thin, durable water proof and fire proof concrete layer.

Essentially, it's concrete on a roll Just Add Water.

Easy To Use

Concrete Cloth is available in man portable rolls for applications with limited access or where heavy plant equipment is not available.

There is no need for mixing or measuring, the concrete is premixed and cannot be over hydrated. It will set in fresh and sea water.

Rapid

Once hydrated, Concrete Cloth remains workable for 2 hours and hardens to 80% strength within 24 hours.

Accelerated or retarded formulations can be produced to meet specific customer requirements.

Flexible

Concrete Cloth has good drape characteristics, allowing it to take up the shape of complex surfaces including those with a double curvature. Unset Concrete Cloth can be cut or tailored using basic hand tools.

Hydrocarbon Resistance

CC offers hydrocarbon resistance to BS:14414; based on a 56 day immersion test at 50°C

Strong

The fibre reinforcement prevents cracking, absorbs energy from impacts and provides a stable failure mode.

Durable

Concrete Cloth is chemically resistant, has good weathering performance and will not degrade in UV.

Water Proof

The PVC backing on one surface ensures that the material is completely water proof and chemically resistant.

Fire Proof

Concrete Cloth is a ceramic and will not burn.

CO2 Savings

Concrete Cloth is the only way of laying a thin concrete layer from a prefabricated roll of material.

This enables up to 150 mm of poured concrete to be replaced with just 8 mm for many surfacing applications.

As a result, material savings of 95% can be achieved for a typical construction project.

This directly reduces the CO2 footprint of construction work not only through material savings but also through reduced road transport and time on-site.

Low Wash Out

Concrete Cloth traps dry concrete powder in a 3-dimensional fibre matrix. Testing based on BS8443 to indicate the effect of underwater setting, shows that Concrete Cloth loses only 3% by mass.

By comparison, specialized underwater concretes typically lose between 10-15% while also requiring much larger volumes to be poured.

Alkalinity

Concrete Cloth uses a specialized high early strength concrete with a limited alkaline reserve. Unlike most concretes, it is not classified as an irritant and is less damaging to the environment.

Environment Agency Approval (UK)

Concrete Cloth was approved for use by the Environment Agency (EA) Biodiversity team in 2010 for the Church Village Bypass Project.

Benefits cited included ‘surface roughness to provide diversity in the channel's morphology’ and its ability to introduce ‘sinuosity in the channel line’.

Several projects have since been granted approval on a case-by-case basis and the EA recently purchased Concrete Cloth directly for internal use as a weed inhibitor.

Greening

Untreated Concrete Cloth will naturally ‘green’ over time as the textured top surface allows moss growth, whilst the fibre-reinforced concrete layer will prevent root-growing vegetation, which would otherwise restrict water flow and increase maintenance costs.
 


Nuna Innovations Inc.

Toll Free: 1.855.815.4385
Telephone: 1.604.815.4385
Fax: 1.604.815.0098
Email: sales@nunainnovations.com