ABSTRACT The ability to monitor soil heat capacity is an important mean in managing the soil temp... more ABSTRACT The ability to monitor soil heat capacity is an important mean in managing the soil temperature regime, which in turn, affects the storage and movement of heat in soils. Thermal properties of soils in agriculture are important since they are directly affect crop growth. The effect of water content and bulk density on the specific heat and volumetric heat capacity of two soils (sand and loam) was investigated through laboratory studies. These laboratory experiments used the calorimetric method to determine specific heat of soils. For the type of soils studied, specific heat increased with increased moisture content. Also, volumetric heat capacity increased with increased moisture content and soil density. Volumetric heat capacity ranged from 1.55 106 to 3.50 106 for loam and from 1.06 106 to 3.00 106 J/m3 ºC for sand at moisture contents from 0 to 0.20 (kg/kg) and densities from 1200 to 1400 kg/m3. Specific heat ranged from 1140 to 2090 for loam and from 800 to 1530 J/kg ºC for sand at moisture contents from 0.01 to 0.20 (kg/kg) and soil density of 1200 kg/m3. The volumetric heat capacity and specific heat of soils observed in this study under varying moisture content and soil density were compared with independent estimates made using derived theoretical relations. The differences between the observed and predicted results were very small. Loam soil generally had higher specific heat and volumetric heat capacity than sandy soil for the same moisture content and soil density.
Embankment dams are important and costly civil engineering structures that provide an essential i... more Embankment dams are important and costly civil engineering structures that provide an essential infrastructure for the management of water. One of the critical aspects of dam design is the analysis of stability and safety of the earth structure under various operating and environmental conditions. Traditionally, a deterministic approach is used for such analysis. However, the determination of variables such as
ABSTRACT The ability to monitor soil heat capacity is an important mean in managing the soil temp... more ABSTRACT The ability to monitor soil heat capacity is an important mean in managing the soil temperature regime, which in turn, affects the storage and movement of heat in soils. Thermal properties of soils in agriculture are important since they are directly affect crop growth. The effect of water content and bulk density on the specific heat and volumetric heat capacity of two soils (sand and loam) was investigated through laboratory studies. These laboratory experiments used the calorimetric method to determine specific heat of soils. For the type of soils studied, specific heat increased with increased moisture content. Also, volumetric heat capacity increased with increased moisture content and soil density. Volumetric heat capacity ranged from 1.55 106 to 3.50 106 for loam and from 1.06 106 to 3.00 106 J/m3 ºC for sand at moisture contents from 0 to 0.20 (kg/kg) and densities from 1200 to 1400 kg/m3. Specific heat ranged from 1140 to 2090 for loam and from 800 to 1530 J/kg ºC for sand at moisture contents from 0.01 to 0.20 (kg/kg) and soil density of 1200 kg/m3. The volumetric heat capacity and specific heat of soils observed in this study under varying moisture content and soil density were compared with independent estimates made using derived theoretical relations. The differences between the observed and predicted results were very small. Loam soil generally had higher specific heat and volumetric heat capacity than sandy soil for the same moisture content and soil density.
Embankment dams are important and costly civil engineering structures that provide an essential i... more Embankment dams are important and costly civil engineering structures that provide an essential infrastructure for the management of water. One of the critical aspects of dam design is the analysis of stability and safety of the earth structure under various operating and environmental conditions. Traditionally, a deterministic approach is used for such analysis. However, the determination of variables such as
Uploads
Papers by O. Nusier