Study On Road Performance Of Marine Stabilized Soil

There is a wide range of tidal mud of coastal marine sediments.As a building foundation or embankment,it's often required for soil treatment,which results in a large amount of spoil.If we can solidify and reasonably utilize them,for example,taking them as road base?,sub-base or roadbed filler,we can achieve the goal of protecting the environment and salvage.Currently,As a new engineering material,Soft soil stabilizer is widespread concerned and applied at home and abroad.Soil stabilizer generally have the characteristics of simple ingredients?reasonable compatibility?less incorporation and good consolidation effect;And there are advantages of short construction period?low construction cost?high consolidation bearing capacity?high compression modulus and strong resistance to permeability.But common soil stabilizers are highly targeted,When applied to marine soft soil,they often can't meet the engineering requirements.Therefore,it has very important engineering value to choose appropriate soil stabilizers which are suitable for marine soft soil and test the engineering properties of stabilized soil.In this paper,combining with the marine soft soil from a place of Ningbo City,the road performance of the stabilized soil is researched.Through laboratory experiments this paper study the relationship between the strength of stabilized soil?the deformation index and dosage of soil stabilizer?degree of compaction?curing period,And for different road structure layer this paper gives a reasonable recommended dose of soil stabilizers,which aims to provide reference for the popularization and application of soil stabilizer to marine soft soil.The main conclusions are as follows:(1)Through experiments conclusion is drew that unconfined compressive strength?splitting strength?compression rebound modulus increases with dose of soil stabilizers?degree of compaction?curing period increases.Among them,inchoate growth rate of the unconfined compressive strength and splitting strength is slightly smaller than the compression rebound modulus',and after 90 days the three are basically stable.(2)If for laying sub-base,it can meet the requirements of road at all levels that dose of soil stabilizers is 10%,degree of compaction is 94%;If for base,Only when the degree of compaction is not smaller than 98%,dose of soil stabilizers is not smaller than 10%,it can meet the requirements of secondary and below secondary roads,when the degree of compaction is smaller than 98%,only if dose of soil stabilizers reach 14%that it can meet the requirements of secondary and below secondary roads.If for first-class and senior roads,the degree of compaction must reach 98%,and the design cumulative standard axle loads should be smaller than 12×106.(3)There is a clear linear relationship between splitting strength and unconfined compressive strength,compression rebound modulus and unconfined compressive strength.In limited testing conditions,the splitting strength and compression rebound modulus can be calculated indirectly by the unconfined compressive strength which is relatively easy to be measured according to this linear relationship.