Elution of Sulfuric Acid, Formaldehyde, and KMnO⁴-consuming Substances from Gelled Soil Stabilizer of Urea-Formaldehyde Resin Type

Abstract

The purpose of this work is to determine the harmful substances described below eluted from the gelled soil stabilizer. The amounts of sulfuric acid, formaldehyde, and KMnO⁴- consuming substances eluted with water were more than 99%, 3-6%, and 6-14% of the respective amounts in the ungelled soil stabilizer solution (Table 2). These values did not decrease even when the soil stabilizer was gelled in the presence of wet or dry sand (Table 2).