Numerical analysis of the soil compaction degree under multi-location tamping

2017 ◽  
Vol 22 (4) ◽  
pp. 417-433 ◽  
Author(s):  
Wei Wang ◽  
Jinzhong Dou ◽  
Jinjian Chen ◽  
Jianhua Wang
Keyword(s):  
Numerical Analysis ◽  
Soil Compaction ◽  
Compaction Degree

Multiple Compaction Tests on Laterite

2013 ◽  
Vol 405-408 ◽  
pp. 138-141
Author(s):  
Rui Ying Wang ◽  
Qing Wang ◽  
Ying Gao ◽  
Shuo Chao Bao ◽  
Zheng Wei Li ◽  
...  
Keyword(s):  
Moisture Content ◽  
Soil Compaction ◽  
Physical Nature ◽  
High Strength ◽  
Optimum Moisture Content ◽  
Dry Density ◽  
High Plasticity ◽  
Maximum Dry Density ◽  
Engineering Projects ◽  
Compaction Degree

Laterite has high void ratio, low density, high moisture content, high plasticity, but it does not match with their physical nature, which has the relatively high strength and low compressibility. In order to improve the strength of laterite and increase its compactness, we usually use the method of dynamic compaction in some large engineering projects. Its easy to find that soil compaction degree increased with the moisture content When the content of moisture is low, but soil compaction decreased after reaching the highest. Multiple compaction can effectively improve the maximum dry density and reduce optimum moisture content, but after compaction number is too much that optimum moisture content dont increase obviously.

Testing Study on Soil’s Moisture Content of Geogrid-Reinforced Clay under Freezing-Thawing Cycles

2012 ◽  
Vol 256-259 ◽  
pp. 139-144
Author(s):  
Rong Fei Zhao ◽  
Yong Ning Mi ◽  
Wei Gao
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Soil Compaction ◽  
Soil Moisture Content ◽  
Initial Moisture Content ◽  
Reinforced Clay ◽  
Compaction Degree

A series of moisture content tests were carried out to study the changes in geogrid-reinforced clay moisture content under freezing-thawing cycles, the influences of compaction degree, reinforcement layers and initial moisture content of the soil on the soil moisture content under freezing-thawing cycles were discussed. We can see that the soil compaction degree is the first important factor to the moisture content, the change of upper lay clay moisture content is positive for the low compaction degree and negative for a high one; the reinforcement layers is the second important factor to moisture content, the upper lay moisture content reduces with the increasing of reinforcement layers, it is significant in the high compaction soil; the initial moisture content is the weakest factor, a big change of upper lay moisture content only appears when the initial moisture content is large and the soil compaction is low.

scholarly journals Effect of Thickness and Compaction Degree of Overburden Soil on Radon Reduction for Uranium Tailings Reservoir

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Xingwang Dai ◽  
Yifan Chen ◽  
Yan Chen ◽  
Hong Wang ◽  
Xiangyang Li ◽  
...  
Keyword(s):  
Soil Compaction ◽  
Reduction Rate ◽  
Soil Thickness ◽  
Reduction Efficiency ◽  
Increasing Trend ◽  
Increase Rate ◽  
Overburden Soil ◽  
Tailings Reservoir ◽  
Uranium Tailings ◽  
Compaction Degree

The thickness and compaction degree of the overburden soil on the beach of the uranium tailings reservoir has an important influence on the radon reduction rate. A theoretical model of radon exhalation is established and an experimental device is designed. The main results are as follows. (1) The radon reduction rate increases with the increase of thickness. When the soil compaction degree is 85.5%, 90.2%, and 94.8%, the radon reduction efficiency increases significantly when the thickness increases from 5 cm to 10 cm, and when the soil thickness is over 10 cm, the increase of radon reduction efficiency tends to be stable. When the compaction degree is 80.9%, the radon reduction rate always increases obviously with the increase of the thickness of the overburden soil, but the increase rate shows a downward trend. (2) The radon reduction rate increases gradually with the increase of compaction degree, and the increasing trend becomes less obvious when the compaction degree is more than 85.5%. Besides, the effect of the change of soil compaction on radon reduction rate decreases with the increase of soil thickness. The calculation formulas about the effect of thickness and compaction degree on radon reduction rate can guide the design and construction of radiation protection of uranium tailings reservoir.

Sign in / Sign up

Export Citation Format

Share Document