Influence of zeolite and sawdust replacement on geotechnical properties of sandy soil stabilized with cement

Sandy soils have caused many problems in construction projects. One way to improve mechanical properties of soils is stabilizing them. Soil engineering properties that can be targeted for soil improvement are: strength, cohesion, hardness, compressibility, permeability, ductility, swelling potential and sensitivity. Sawdust can have many applications in geotechnical engineering due to their high tensile strength, low specific gravity and high durability. Also, because of high damping properties, it will greatly reduce the soil settlement and has good results in the earthquake. Since zeolite plays a very positive role in environmental issues, it can be a good substitute for a part of cement in sandy soil stabilization. In this study, the effect of zeolite and sawdust replacement with cement on uniaxial compressive strength of sandy soil was investigated. For this purpose, the replacement values of 0, 10, 30 and 50% zeolite and 0.5, 1 and 1.5% sawdust residue on the sieve No.16 with 4% cement has been used. The results of uniaxial compressive strength tests showed that by increasing the percentage of replacement of zeolite and sawdust instead of cement, the compressive strength of the specimens decreased and their fracture strain increased at the moment of failure.

Keywords:

Sandy soil , Replacement , Zeolite , Sawdust , Cement , UCS test