Chemical Decomposition of Soil Stabilizer Gel of Urea-formaldehyde Condensate Type

Abstract

The purpose of this study is to determine the extent of the chemical decomposition of the gel, which is formed from the soil stabilizer of urea-formaldhyde condensate type. The immersion of the gel in the various amounts of 0.0125 M H₂SO₄ solution caused the dissolution of the component such as urea, formaldhyde, hydroxymethyl goup, methylene group, and KMnO₄-consuming substances. The chemical analysis of the immersion solution reveale d that the increase in the concentration of the water-soluble substances is due to the acidcatalyzed decomposition of the gel, not to the physical dissolution of the gel.