When lime is mixed with clayey soil, a chemical change in the materials occur. Calcium cations in the lime reduce the plasticity of clay and reduce its ability to hold moisture. The stronger material will retain its solid state as the pozzolanic reaction continues for several decades. The exact physical improvements of using this stabilizer show the soil becoming 10 times stiffer and a 20x shear strength enhancement. The high clay content of North Texas and the Dallas-Fort Worth area makes lime the preferred method for All State Paving
to strengthen the soil before paving. Compared to cement stabilization, lime provides significant cost saving up to 25% for most projects.