Stabilization of clayey soil using Gypsum

Abstract

The poor soil properties result in foundation failures of the structure which further causes in cracks of structural elements and walls. To avoid this, it is essential to enhance the soil properties. Soil stabilization is one of the processes to improve the engineering properties of the soil and thus making it more stable. It is required when the soil available for construction is not appropriate for the intended purpose.
 In this research, for stabilizing clayey soil and to achieve higher strength in minimum time period, gypsum (CaSO4.2H2O) is used as one of the soil stabilizing agents. Experiments were planned to evaluate the properties of clayey soil on the addition of different percentages of Gypsum i.e., 2%, 4%, 6% and 8% to the existing soil. Tests conducted on clayey soil mixed with Gypsum included are, Atterberg’s Limits, Specific Gravity and Standard Proctor Test. A comparison between the properties of clayey soil, clayey soil mixed with Gypsum is done to understand the effect of Gypsum addition on soil properties. It was observed that the soil properties were enhanced for 6% of Gypsum addition to the soil.

Compaction Characteristics and Permeability of Expansive Shale Stabilized with Locally Produced Waste Materials

“…Gypsum (CaSO 4 ·2H 2 O) is employed as one of the soil stabilizing agents in a study by Reethu et al [ 23 ] to stabilize clayey soil and attain better strength in a short period of time. Experiments were designed to evaluate the properties of clayey soil after adding different percentages of gypsum to the existing soil; namely, 2 percent, 4 percent, 6 percent, and 8 percent.…”

Does Current Knowledge Give a Variety of Possibilities for the Stabilization/Solidification of Soil Contaminated with Heavy Metals?—A Review

“…In-situ stabilization/solidification of soils contaminated with heavy metals is the subject of worldwide research in the fields of chemistry, geotechnics and environmental engineering. It was originally a process used under the name of stabilization, only as an economical alternative to soil replacement, in case of insufficient strength and deformation properties of the subsoil [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. However, due to its effective binding of contaminants at relatively low cost [ 11 , 12 , 13 ] and competitive time-consumption [ 14 , 15 ], it has become known as a leading method of soil remediation [ 16 , 17 , 18 , 19 ].…”