Modification of silty clay strength in cold region's pavement using glass residue

In cold regions, freezing and thawing of soil can make some intense changes in mechanical and geotechnical properties of it. This paper, for the first time, focuses on the effect of adding a newly identified fine grained material so called glass residue attained from glass production plant, in modifying the mechanical behavior of fine grained soil after experiencing numerous freeze-thaw cycles. For the purpose, cylindrical samples of silty clay-glass residue mixture were evaluated through uniaxial compression and splitting tensile strength test after 0 cycle and 3, 6, 9 and 11 cycles of freezing-thawing. The results show using glass residue can help the soil treatment in terms of tension and compression strength. In addition, the highest modification obtained at 14 days of curing. Furthermore, glass residue lowers the strength reduction during freeze-thaw cycles. The amount of strength loss (compression, tension) of samples without stabilizer and others with 10%, 15%, 20% of glass residue are (65%, 70%), (48%, 66%), (35%, 57%) and (41%, 54%), respectively.