This paper presents the results of an experimental program to evaluate the potential of limestone dust, a waste material to enhance the engineering properties of some soils in New Jersey and Southeastern Pennsylvania. Limestone dust (LSD) was used as stabilizing agent to improve the unconfined compressive strength (UCS), California bearing ratio (CBR), plasticity and swell potential of the aforementioned soils. The effect of admixture content on soils’ moisture-density relationships was also studied. The results of the investigation show that the incorporation of LSD into the investigated soils led to an increase in UCS, CBR, and to a decrease in maximum dry density, plasticity and swell potential of the soils. In order to examine the importance of this study, a cost comparison was made for the preparation of the sub-base of a highway project with and without the admixture stabilizations. On an average $1.1 million per mile was saved on a typical heavy duty highway in Philadelphia.
Clays, Soil Stabilization, Statistical Analysis
