Geotechnical
3
Grading
Thermal Conductivity
Leca® LWA is produced in the form of round ceramic granules with a porous cellular
The practical thermal conductivity may vary from 0.10 to 0.15W/mK depending
inner structure. The grading for most Geotechnical applications is 10-20mm.
on grading, compaction, humidity level and type of technical application.
Density
Durability
Leca® LWA 10-20mm dry density ranges between 220kg/m3 – 325kg/m3.
Leca® LWA is totally inert; it contains no harmful substances or gases and is completely neutral. Leca® LWA’s resistance to chemical attack is comparable to
Resistance
that of glazed tile, glass or other ceramic material.
Unlike other granular loose material Leca® LWA offers a frictional resistance without any cohesion. The 10-20mmR grade has an internal angle of friction of typically 37° (standard shear box tested) and a design strength of 100kN/m² due to the rigidity of the rounded pellet.
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