This paper takes a municipal road in a coastal area as an example to explore the application of silt solidification and subgrade filling construction technology.In this project,a curing agent composed of cement,lime and V powder was selected in a mass ratio of 5∶2∶2,and the mixing amount was 14%of the mass of the sludge.On the basis of drainage,precipitation and site leveling,spread the silt and sprinkle it with a curing agent.After fully mixing the two materials with a mixer,they are leveled again and rolled multiple times using a double steel wheel roller and a rubber-wheel roller respectively.Then indicators such as compaction and flatness were tested,and the results showed that all indicators met relevant standards.Finally,lime soil is used to seal the top surface of the subgrade to prevent the formation of a"weak layer"between the subgrade structural layer and the silt cured and filled subgrade,and further improve the bearing capacity of the silt cured and filled subgrade.
关键词
固化剂/分层碾压/压实度/固化淤泥/路基施工
Key words
curing agent/layered rolling/compaction/solidified silt/subgrade construction
维普
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