What is the Typical Depth of Leca® Lightweight Aggregate for Rail and Road Construction? скачать в хорошем качестве

What is the Typical Depth of Leca® Lightweight Aggregate for Rail and Road Construction?

Leca® LWA is used extensively as a lightweight aggregate for civil engineering and structural applications, such as Rail, Highways and Bridges. Through promotion and specification, our client base is continually finding further solutions and interesting uses for this special lightweight aggregate. Construction of embankments over weak and compressible soil deposits, where the loading of the embankment causes soil consolidation and settlement, is common. Depending on the height of the embankment, the depth of the weak soil deposit and the consolidation properties of the soil strata, total settlements can be very deep and problematic in terms of road evenness, function and durability of the road construction. In the most difficult cases, various combinations of soil strengthening techniques are available, for example, preloading, vertical drainage and deep stabilisation with piles all of which are time consuming and costly to install. By lightening the embankment in highway development with Leca® Lightweight Expanded Clay Aggregate, subsoil strengthening and lengthy settlement can be reduced or even avoided altogether. Using Leca® Lightweight Expanded Clay Aggregate on large scale cut and fill operations and construction on soft soils or bad ground can overcome stability problems, reducing the risk of landslide and deformation. Used in road embankments, Leca® LWA exerts much lower horizontal earth pressures compared with other backfill materials, helps improve stability and reduce the need for counterfill.