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Geoforce Indonesia is a company engaged in the field as a geosynthetic soil reinforcement materials with main product segmental retaining wall, earthwork, geosynthetic and soil improvement

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Various Applications


In the construction of new railway tracks, geosynthetics can function as separators from materials that have different grain distributions, filters, drainage and soil reinforcement. Geosynthetics can be installed in or under the ballast or sub-ballast layers.


Geosynthetics can be used as separator layers of railway track supporting structures made of materials with different properties and grain sizes. The track of rail travel on the rails causes repeated cyclic movements in the supporting structures. And as a result, the fine grains of the subgrade subgrade can be "pumped" upward into the granular soil layer, reducing the strength and drainage capacity of this layer. Moreover, geosynthetics can reduce the entry of aggregate subbase grains into the subgrade, thus this layer will always maintain its thickness and integrity so that its life time will be longer. To be able to provide this function, geosynthetics must be resistant to concentrated forces such as tearing, pitting and penetrating forces and have a pore size in accordance with the grain size of the material that must be resisted.



Geosynthetics (geotextiles, geogrids and geocells) which are installed on unstable sub-grade layers (subgrade) can eliminate the need to replace this soil due to the addition of bearing capacity in this system due to better stress distribution. When installed in ballast or sub-ballast layers, geosynthetics can help to reduce settlement caused by lateral movement of ballast and sub-ballast materials. The characteristics of geosynthetic materials that must be considered for this function are the interaction between geosynthetic-soil/ballast, resistance to damage during construction and operation, modulus of stiffness and tensile strength of geosynthetic reinforcement materials.


The flow of water from the sub-grade subgrade into the granular layer allows carrying the fines from the subgrade. This can occur due to the increase in stress levels in the sub-grade due to the load on the railroad track. In this case, the geotextile can function as a filter, which allows water to flow freely but otherwise the sub-grade soil grains are retained. To be able to fulfill this, geotextiles must have adequate permeability properties and retention properties so as to prevent clogging.


Good drainage is a critical factor to prevent the structure of the railway track from degrading its performance due to water from rainwater or from subgrade that enters the ballast layer. Geo-composite drainage materials installed in appropriate locations within the track structure can provide drainage across the track, preventing water accumulation from occurring. In this application the geo-composite must have sufficient discharge capacity and not be damaged. If the geosynthetic material is properly installed, it can improve rail performance by increasing the design life and extending the maintenance cycle period.