In regions susceptible to mining subsidence or where ground conditions feature natural voids, culverts, or tunnels with a risk of collapse, reducing the overlying weight with Leca LWA provides an effective solution.
This is especially crucial during tunnel construction, where unexpected voids or small cavities around the concrete may collapse onto the structure. Lightweight filling with loose or cement-bound Leca LWA offers a cost-efficient solution, as it can be easily handled and applied using pumping or blowing techniques.