Biaxial GeoGrid s双向土工格栅

The Gadarwara railway station is approx. 20 km from NTPC site. NTPC constructed the Gadarwara railway siding line for transporting coal to their plant. For this railway siding work, the blanket (subballast) material was not available in the Gadrwara area and transportation of blanket material from outside area was not an economical option. This devoid of blanket material was major concern of project. Also, mining has been banned in our country due to environmental issues, so it had become difficult to get quantity for blanket for formation construction. Apart from unavailability of blanketing material, another concern of this project was the inadequacy of good subgrade material. The subgrade material was of SQ1 type which had fines content of more than 50%. Considering these aspects of project, biaxial extruded polypropylene geogrid MacGrid EG and non-woven geotextile solution MacTex N was proposed for strengthening the formation.

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The RN4 is one of the major routes in Burkina Faso that connects the capital and largest city of the country, Ouagadougou, to the eastern cities such as Koupela. Within Ouagadougou, the urban section of this national road passes through Komber-Pandema Avenue at the East interchange and traverses wetlands that border the lakes and ponds of the city. As part of the rehabilitation of this wet stretch, the company COGEB International aimed to strengthen the roadbed foundation layer to cope with potential hydraulic pressures and the wet-dry cycles associated with the rainy and dry seasons.

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1)地质勘察报告显示库房基础为深冲积软土； 2)基于场地标高的原因，原场地需整体填筑1~2m高度，以适应卸货平台要求； 3)库房内设计荷载3吨/㎡，3~5吨叉车动荷载作用； 4)地坪基础处理费用有限，无法桩基或结构地坪加固处理。业主方对库房地坪基础回填及软弱基础所引发的工后沉降非常担心，希望采取合理措施减小工后沉降，避免地坪后期开裂。

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