Compression of agricultural soils from Quebec.
Compression of agricultural soils from Quebec.
复制标题
压缩来自魁北克的农业土壤。
DOI：
10.1016/0167-1987(90)90120-3
复制
发表时间：
1990
影响因子：
6.5
通讯作者：
D. Angers
中科院分区：
文献类型：
--
作者：
D. Angers
对魁北克26种农业土壤进行了静力单轴压缩试验。对于预先筛选到6 mm的每种土壤，在不同含水率下获得了压缩线(容重与施加载荷的关系)。对于粘粒含量小于35%的土壤，压缩指数(压缩线斜率)与土壤中矿物质含量的相关性最好(粘粒r=0.75∗∗，砂粒r=−0.78∗∗)。对于粘粒含量丰富的土壤，压缩指数与有机碳含量相关性最好(r=−0.75∗∗)。标准压缩条件下的容重与粘土(r=−0.80∗∗)和有机碳(r=−0.77∗∗)均呈正相关。该参数还与土体塑性下限高度相关(r=−0.95∗∗)，证实了稠度下限可以很好地预测其他更难确定的力学性质的观察结果。结果表明，土壤矿质组分和有机质组分对魁北克农业土壤的压缩特性均有较大影响。
Static uniaxial compression tests were performed on 26 agricultural soils from Quebec. Compression lines (bulk density vs. applied load) were obtained at different water contents for each soil previously sieved to 6 mm. For soils with clay contents less than 35%, the compression index (slope of the compression line) was best correlated with the mineral fraction of the soil (r= 0.75∗∗ with clay and r=− 0.78∗∗ with sand). For clay-rich soils, the compression index was best correlated with organic carbon content (r=− 0.75∗∗). The bulk density under standard compression conditions (100 kPa load and 50% water saturation) was related to both clay (r=− 0.80∗∗) and organic carbon (r=− 0.77∗∗). This parameter was also highly correlated with the soil lower plastic limit (r=− 0.95∗∗) which corroborates the observation that the consistency limits can be good predictors of other mechanical properties which are more difficult to determine. Results suggested that both the mineral and the organic fractions have much influence on the compressive behaviour of Quebec agricultural soils.
DOI：
--
发表时间：
2005
期刊：
Proc.2^<nd> China-Japanese Symposium on Geotechnical Engineering
影响因子：
--
作者：
K.ARAKI;R.KITAMURA
通讯作者：
R.KITAMURA