1.In these tests, the clay content of silt increases as 3%, 6%, 9%, 12%, 15% while the sand content remains unchanged and the siltcontent increases as 50%, 60%, 70%, 80% while clay content remains unchanged.
2.The test result indicates this measurement system is suitable for the siltcontent scope of0~250kg/m3, not needing to adjust the correction coefficient in this scope, themeasurement system thus has the good compatibility.
4.The results showed that PAM within 30～120kg/hm2 accelerated the reduction of sandy particle (2～0.02mm ) content and the increasing of clay-silt particle(<0.02mm) content , improved the coarsening of soil.
6.The loess in Henan Province is composed of fine silt, silt and clay particles, among which, the content of silt particles is greater than 60% and clay particles usually is between 17.3%～32.6%.
7.(2) Quantitively studied the solidification effect of different organic matter contentsilt, make clear the relationship of organic matter content and solidification effect.
8.Secondly , the component particles of the red clay are predominantly less than 250μm，with the content of silt(5-50μm) average 52.17%．And the content of 10-50μm is higher than that of 5-10μm．Few particles over 250μm can be observed. .
10.The results showed that the content of coarse silt (0.05～0.02 mm), fine silt (0.02～?0.005? mm), and clay (<0.01 mm ) were 47.9%, 24.9% and 28.0%, respectively.
