Overview
Concrete paver are recommended to be placed over sand cushion. Sand placed on existing soil may result in intermixing of dissimilar soils, that can lead to settlement of paver.
Laying Typar between existing soil and sand cushion provides a separation to ensures and preserve the function of sand layer.
Typar stabilization and reinforcement function improves the load carrying capacity of the concrete pavers. With high initial modulus, Typar provides tensile strength and complement the bearing capacity of existing soil.
Issues
Concept
Projects
PAF Pakistan Airforce Museum
Freight Connection Pakistan (Pvt.) Ltd. Terminal
Pochatok Market, Odessa, Ukraine
Odessa National Academic Opera and Ballet Theater, Ukraine
Mall at Ukrain
Separation
In geotextile applications, separation is defined as: “The preventing from intermixing of adjacent dissimilar soils and/or fill materials by the use of a geotextile or a geotextile-related product”5 .
The main application areas of a geotextile used as a separator are in road and railway projects. The use of the geotextile preserves and improves the integrity and function of the different materials. Two mechanisms occur when an aggregate base is laid over a soft subsoil and a vertical load is applied:
Firstly, the geotextile prevents the loss of aggregate into the soft subgrade (Fig. 4). An engineering adage describes this very well:
“10 kilos of stone placed on 10 kilos of mud results in 20 kilos of mud”. The geotextile separates and confines the aggregate base course, so that a higher degree of compaction can be obtained with subsequent higher bearing capacity.
Technical Handbook