Technical Study For Filling Sand Subgrade Construction

Sand is that fairly good filling in of one kind builds road base material. The grit making use of a river is filled building road base, now that may dredge a runway , can stop taking up cultivated land , draw on local resources , reduce cost of construction. Sand fills but instrument zhu material as the roadbed, existence exchanges the smooth compaction no easy to collapse, does the bad defect of stability after dehydration.The basis in the general situation introducing a project has been listed in the main body of a book, has summed up the home and abroad roadbed filling excellent grit shortcoming and has pointed out this project construction technology difficult point. For working out the scheme being under construction rationally,first on inquiry, have analysed grit physical property such as source distribution , grit source trunk density , moisture content, have pointed out the effect that the person stabilizes to the roadbed compaction and the side slope.On basis analysing in the grit physical mechanics character, have suggested that testing the scheme and content, building-up experiment Duan has carried out an experiment on roadbed roller compaction handicraft, roller compaction number of times , the best moisture content etc., has got the firsthand data.On the basis working as said or narrated above, the compaction and side slope having worked out the rational construction scheme , the handicraft being under construction , having resolved a roadbed stabilize a problem.According to this actual project effect, scheme adopted by the main body of a book has reduced construction costs , has decreased by the land occupancy , has shortened a time limit for a project, have considerable economic returns and social benefits, to have provided experience for the roadbed is under construction in the days; to come with the type.