Study On Numerical Analysis Performance Of Lithium Slag Concrete Components Under Simulated Acid Rain Environment

Lithium slag is a good material for artificial volcano ash,concrete can improve and improve the mechanical properties of concrete,and can economize the material in practical engineering,reduce the dosage of cement,reduce the construction cost,and can realize the recycling of resources,make contribution for green building.Nowadays,a lot of research on lithium slag concrete is being carried out,which is preliminarily used in practical engineering and has achieved good economic benefits.In this paper,the stress-strain curves of lithium doped slag concrete under simulated acid rain environment were studied by axial compression test.The curve parameters were analyzed,and the fitting curves and corresponding equation expressions of each specimen were obtained through regression analysis.The mechanical properties of the beams and columns of lithium slag concrete mixed with lithium slag in simulated acid rain environment are analyzed by finite element numerical simulation.Comparing the test value with the simulated value,the feasibility of the model is verified,and the parameters of the model are analyzed and the influence of the different parameters on its parameters is analyzed.The main achievements were presented as follows:(1)with the influence of lithium slag content and corrosion cycle as the influencing factors,76 prism specimens were prepared,and 24 small blocks were used to determine the acidification depth under different corrosion cycles.To be concrete specimens to corrosion cycle,the apparent analysis,two kinds of surface corrosion of concrete under different corrosion cycle,after the axial compression test,stress-strain curves and elastic modulus of concrete and the determination of relevant parameters,record and analyze the failure pattern.Fitting or regressive analysis of the obtained data,the relationship between the ultimate bearing capacity,peak strain,the parameters of the ascending section of the constitutive equation and the depth of acidification is studied.Finally,the fitting curves and corresponding fitting equations of stress-strain for each specimen are obtained.(2)the ANSYS finite element simulation software based on doped lithium slag concrete beams reinforced,columns and columns of the mechanical properties of finite element simulation,using a separate model of material model definition,modeling,meshing,loading solving and postprocessing from key technology research the successful implementation of the model,the finite element software of doped lithium slag reinforced concrete beams and columns of the building.(3)Based on the successful establishment of the finite element model,by analyzing and analyzing the failure modes,crack development,von Mises stress cloud diagram and load deflection curve of concrete beams and columns with lithium slag,on the one hand,we further verify the accuracy of the simulation.On the other hand,the influence of the related parameters,such as the amount of lithium slag,on the mechanical properties of reinforced concrete members under different environments.