TenCate GeoDetect® _ Mega Tec Consolidation Sdn. Bhd-shihab

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Mega Tec Consolidation Sdn. Bhd.

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TenCate GeoDetect

MARCH 20, 2013MARCH 20, 2013 MEGA TEC LEAVE A COMMENT

TenCate GeoDetect Monitoring and warning solution

TenCate GeoDetect is the first sensor enabled geotextile on the market to provide soil reinforcement,

structural health monitoring and an early warning system into one package. Our intelligent

geotextile is the first system designed specifically for geotechnical applications and offers a technical

solution for monitoring geo-structures for changes in strain, temperature or the combination of the

two. TenCate GeoDetect is the only solution available on the market able to measure low strain in asoil structure. The TenCate GeoDetect System incorporates a geocomposite fabric, fiber optics,

instrumentation equipment and software to provide a innovative solution for the multi-functional

requirements of a geotechnical application, e.g. protection of the optical fiber, anchoring interface with

the soil, in-plane drainage capability and reinforcement in addition to data acquisition.

Applications

The TenCate GeoDetect solution is ideal for:

Walls

Geosynthetics are more and more used to reinforce earth-walls, because they are cheaper and easier toinstall than other systems.

When it is crucial to follow deformation level of the earth structure (bridge abutment for example),monitoring gives an additional safety. It is also valuable to measure the displacements at the interface

between rigid and soft structures. Structural Health monitoring is important when the earthwork is

localized close to sensitive areas or when the site materials are of poor quality.



Embankments on piles

Embankments over piles are used more and more. Geotextiles for reinforcement improve the load

repartition on the top of the piles. Structural health monitoring is important to assess the structurebehaviour and its long term performance



Roads/Rails

Existing right-of-ways/easements and environmental concerns often force new rail and highwayconstruction over geotechnically-challenging areas, including karst topography, abandoned mines,

soft ground, and existing landslides.

Slopes

The increasing use of steeper and higher slopes in more adverse topography by property developers

that want to maximize surface area for new building construction is creating an embedded liability forowners and engineers.

Levees



Levees have random and high hydraulic stresses. Early detection and warning during a flood event ofany sign of erosion or instability increases the people security and prevents the failure of these works.

Dams and dikes

Dams must be supported by competent foundations and are routinely stressed by permanent or cyclic

hydraulic forces. Early detection of soil erosion and instability is a challenge for the safety of hydraulic

works.

Embankments on cavities

Embankments over soft soils, or cavities, or built with poor soils have challenging and specific designs.

Early warning systems are essential to monitor the changes of these earthworks and to react when

early suspects signs are detected deeply into the soil.



Canals, Basins and reservoirs

Water resource management et pollution control due to the storage of hazardous products require high

performance mineral and geomembrane lining systems. Leakage and damage detection and

localization systems are essential control, reception and management tools.

Landfills

The TenCate GeoDetect system has the potential to address several challenges specific to landfill

applications: movement detection of top soil layer; landfill expansion for higher containment capacitywith steeper slope reinforcement; assessment of the mechanical properties of waste materials, and

monitoring temperature variations in a leak detection use.

Pipelines



The TenCate GeoDetect geotextile enabled sensor comes in three product configurations:

1. TenCate GeoDetect is a customizable solution that is created to meet the unique requirements ofeach individual project. Fiber Bragg gratings (FBG), Stimulated Brillouin Scattering and Raman

Scattering are all proven fiber optic technologies that can be built into TenCate GeoDetect. These

technologies measure strain, strain & temperature or temperature only changes in soil structures.

Strain as low as 0.02% can be measured with a spatial resolution of 1 m. With the proper software,changes in temperature can be monitored at 0.1C with a spatial resolution of 1 m.o



2. TenCate GeoDetect S uses Fiber Bragg Gratings (FBG) technology to measure strain and/or

temperature in soil structures. Compact and easy to install, TenCate GeoDetect S is 1 meter wide by

10 meters long. Two FBG optical fibers are embedded onto each TenCate GeoDetect S strip with 11

FBG sensors strategically inserted onto the two special optical fibers approximately 1 meters apart. Strain measurements as low as 0.02% can be obtained with a spatial resolution of 0.5m. Changes in

temperature can also be monitored at 0.1C.

3. TenCate GeoDetect S-BR is a solution that uses Stimulated Brillouin and Raman Scattering

technology in single mode and multimode fibers to measure strain as low as 0.02% and/or changes in

temperature of 0.1C with spatial resolutions of 1 m at distances up to 20 km with suitable

instrumentation. The TenCate GeoDetect S-BR systemis designed for projects such as oil pipelines,

levees, roads and rails. The standard version is a strip 0.76 m wide and 600 m long. Customisedversions are possible.

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