Co-Authors:
Keren, R., Institute of Soils and Water, ARO, The Volcani Center, Bet Dagan, Israel
Kreit, J.F., Institute of Soils and Water, ARO, The Volcani Center, Bet Dagan, Israel
Shainberg, I., Institute of Soils and Water, ARO, The Volcani Center, Bet Dagan, Israel
Abstract:
Column studies with two soils showed that hydraulic conductivity decreased with the addition of gypsum of particle size less than 44 micrometers but was unaffected by a particle size of 0.25 to 1.00 millimeter in diameter. The effect of lime powder on the initial hydraulic conductivity of the soils was similar to that of gypsum. During leaching, however, the hydraulic conductivity with gypsum addition increased, whereas the hydraulic conductivity with lime addition remained low. These results suggest that the reduction in hydraulic conductivity of soils that contain gypsum is due mainly to mechanical plugging by the small gypsum particles. © 1980 The Williams & Wilkins Co.