Soil-Water Retention, Transmission, and Quality of Leachate from Polymer-Treated Soils, Effects of the In Situ Crosslinking

摘要

Clay, silt loam, and fine sandy loam were treated with various two-phase crosslinkable polymer systems and with polyvinyl alcohol (PVA) to study their effects on selected soil characteristics. Surface samples of the three soil types were taken in North Dakota and were analyzed for primary particle size distribution, natural water stable aggregate size distribution, percent organic carbon, and percent calcium carbonate equivalent. Samples were then treated with a variety of types and concentrations of amines and aldehydes of the two-phase crosslinkable polymer system. Some samples were treated with PVA and water to compare treatment effectiveness and to serve as a control. Following treatment four basic tests to determine the quality of soil aggregates on natural soils were performed: (1) plant available water holding capacity; (2) saturated hydraulic conductivity; (3) water stable aggregate size distribution; and (4) water drop penetration tests to measure water repellency.