01046328

Component

This paper describes a recent laboratory experiment that compared four non-traditional stabilizers with two types of poorly graded sands (SP). The two sands, one eolian, one fluvial, were collected from the National Petroleum Reserve – Alaska (NPRA). Three polymer emulsions (Enviroseal M10+50, Soiltac, Soil-Sement Engineered Formula), and a liquid stabilizer (EMC2), were tested using the California Bearing Ratio (CBR) as the method of comparison. The samples were subjected to dry CBR tests as well as CBR tests following freeze-thaw cycles. Results were based on a comparison of the average CBR for each product as compared to the native material. Overall, Soil-Sement showed the greatest improvement over the base material, with a 992% improvement for the dry eolian CBR, and an 872% improvement for the freeze-thaw eolian CBR. Soil-Sement and the fluvial sand showed a 497% improvement for the dry CBR and a 3,751% improvement for the freeze-thaw CBR. For the eolian sand, all products tested improved the dry and freeze-thaw CBR values by at least 200%, except for the liquid stabilizer EMC2, which actually showed a decrease in CBR compared to the base material. For the fluvial sand, all products except EMC2 improved the freeze-thaw CBR over the unmodified soil by at least 500%, but only the Soil-Sement and Soiltac improved the average dry CBR over the unmodified soil, while the Enviroseal and EMC2 showed decreases in CBR.

01042056

07-0316

English

15p

2007

Transportation Research Board 86th Annual Meeting

CD-ROM

Figures (5) ; References (13) ; Tables (3)

Base course (Pavements); California bearing ratio; Emulsions; Freeze thaw durability; Freeze thaw tests; Geotechnical engineering; Sandy soils; Soil stabilization; Subbase materials

Liquid stabilizers

Alaska

Geotechnology; Highways; Pavements; I23: Properties of Road Surfaces; I42: Soil Mechanics

Transportation Research Board Annual Meeting 2007 Paper #07-0316

TRIS, TRB

Feb 8 2007 4:52PM