Economical and versatile to place Leca® LWA is typically tipped into position, spread with a tracked excavator and compacted by 4 passes of the same vehicle or, it can be pneumatically blown into position, which offers specific benefits for some applications especially where site access is difficult.
Leca® LWA can be installed using machinery already in use on site for the placement of other earthworks applications – unlike other lightweight products that require costly, specialist equipment and installation techniques.
The pellets of Leca® LWA are round and find their position within bulk fill very quickly when pressure is exerted. For this reason the layers to achieve adequate compaction can be as deep as 1 metre, six times the depth of layer for traditional fill material and with compaction more than ten times quicker to install.
Once compacted, the modulus of elasticity is 15-20MN/m2 and the maximum level of effective stress to avoid crushing of grains is 100kN/m2. Increased loading can be achieved by introducing a capping Layer such as subbase material or concrete.
Surplus can easily be disposed of - for example, if an embankment is for temporary use, Leca® LWA can easily be reclaimed and re-used in a number of other locations, unlike other man made materials destined for landfill and expensive landfill charges.
Full guidance please contact our team for more information.