Research On The Impact Of Electrolyte And Nano-materials For Electroosmosis For Consolidating Weak Soils

Mucky clay widely distributed in vast areas of our country,because the mucky clay with low permeability,conventional soft soil reinforcement methods(such as dynamic compaction,by preloading method,vacuum preloading method,etc.)on soil reinforcement the effect is not ideal.In recent years,a new kind of soft soil treatment method,electro-osmosis drainage consolidation method,gradually been applied in the project,the advantage of this method is rapid drainage and have a good reinforcement effect on the soil with fine particles and low permeability.Based on the theory of conventional electro-osmosis method,this article attempts to study on soil infiltration power drainage consolidation impact by incorporating the electrolyte solution and nanomaterials,the main research is as follows:1.Choose two different particle size of nano-materials,nano-materials for each of three different levels of incorporation,comprehensive comparison from drainage,power consumption and and strength of the soil after electro-osmosis.Experimental results show that the large particle size of nanomaterials can promote electroosmotic drainage,small size of nanomaterials electro-osmotic drainage promoting ineffective,and two kinds of particle size of nanomaterials can improve the strength of the soil.Since the charge of nanomaterials have no effect on electro-osmotic drainage,it can reveal the particle size of nanomaterials can affect the electro-osmotic drainage,large particle size nanomaterials draining effect of electro-osmosis better.The large particle size effect of nano-materials at low incorporation of better,and a small particle size in the high amount of better.2.To study the effect of three electrolyte(CaCl2,Al2(SO4)3 and MgSO4)solution on the soft soil electroosmotic,with different concentrations of the electrolyte solution electroosmosis experiment were conducted.Experimental results show that the electrolytic solution has a certain role in promoting the draining effect of electro-osmotic drainage,CaCl2 solution is the best,the worst drainage effect of Al2(SO4)3.Adding electrolyte solution can increase the coefficient of energy consumption of electro-osmotic.Three kinds of electro-osmotic electrolyte solution on the strength of the soil reinforcing effect is very large.Electrolyte solution for soil reinforcement in two aspects: one hand,to promote the electro-osmotic drainage,on the other hand,electrochemical reaction occurs in the soil.3.Researching electroosmosis experiment using simultaneous addition of nano-materials and the electrolyte solution,it can be found It has a synergistic effect when the electrolyte solution and nano-materials simultaneously used in electro-osmosis experiment,Presents conclusions that combined action enhances the effect of soil strength significantly higher than the electrolyte solution or added separately nanomaterials electro-osmotic.It reveals the basic mechanism of synergistic effect,not only has advantages of both of the two materials,but also can promote mutual reinforcement between the two materials.