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卡萨格兰德(A.Casagrande)在提出塑性图时曾强调指出,同一地区、同一成因的土,在塑性图上具有沿A线呈条带状分布的明显规律,各典型土在塑性图上大体占据着与A线相平行的位置。1978年我们整理了许多单位提供的7000余组试验数据,证实了上述规律性。此
When A. Casagrande proposed the plasticity map, he emphasized that the same region and the same cause of the soil have obvious rules along the A-line distribution on plastic maps. The upper part generally occupies a position parallel to the A line. In 1978, we collated more than 7,000 test data provided by many units, confirming the above-mentioned regularity. this