Laboratory Evaluations of Canal Soil Sealants. An Open and Closed Conduit Systems Investigation of Four Proprietary Materials Proposed as Canal Soil Sealants on Silty Sand in Laboratory Permeameters,

摘要

Four proprietary materials proposed for canal sealants were evaluated in the Bureau of Reclamation laboratory. Tests on silty sand specimens of 12-in. (30.5-cm) length were conducted in 1-in. (2.5-cm)-dia plastic permeameter tubes. Permeability rates of the soil specimens were determined before and at time intervals after treatment. Treatments at rates from 50to 800lb/acre (56to 896kg/ha) were generally accomplished by mixing the sealants with water and ponding them over the soil specimen surfaces. Increments of the soil were removed from a specimen top until the permeability rose to the original pretreatment rate. The total depth of soil removed was considered to be the effective depth of penetration for the sealant. (Author)