The Affect Of Environment And Loads On Complex Lithium Slag And Slag Concretc Chloride Ion Penetration

Experimental research of volume stability concrete within the single-doped lithium slag, the singledoped slag and lithium slag slag mixed.Explore of lithium slag and steel slag composite high-performanceconcrete in the standard conservation, water conservation, after7d water conservation pouring NaCl (5%)solution of conservation, after14d water conservation pouring NaCl (5%) solution of conservation, after7dwater conservation pouring NaCl (5%) solution of conservation, after14d water conservation pouring NaCl(5%) solution of conservation,50°C and105℃insulated12h,30%of the stress level, the stress level of50%, and80%stress levels of chloride ion permeability coefficient. The test results show that:(1) Ordinary cement-paste normal consistency of lithium slag With Lithium slag content increasedgradually increasing. When lithium slag dosage of not less than75%, the slurry exhibits the phenomenon of"false condensate". lithium slag dosage is no more than85%that volume stability of concrete is good.(2) Ordinary cement-steel slag paste normal consistency with increasing steel slag decreases, themaximum dosage, the minimum normal consistency. the trial cake Act and Reye folder method test resultsfound: as long as the steel slag is not more than70%, its volume stability is good.(3) Ordinary cement-lithium slag-steel slag paste of normal consistency with the of lithium slag andsteel slag change varies,when steel slag dominant, having smaller standard consistency. With increasinglithium slag dosage, Reye folder to the expansion of small value that lithium slag has inhibit to volumestability of cement-lithium slag-steel slag.(4) Water-cement ratio is to determine the importance of high-performance concrete permeabilityindex. With the lower water-cement ratio,28d and84d of the chloride ion diffusion coefficient decreases.When the water cement ratio constant, chloride diffusion coefficient with the increase in the total amount ofadmixtures first increases and then decreases the potential admixture total of275-350kg/m~3appropriate.Contrast to water conservation7d watering pouring NaCl solution conservation14d watering pouring NaClsolution conservation NaCl solution conservation7d water after pouring,14d in water after pouring NaClsolution conservation results can be drawn: a variety of conservation methods chloride diffusion coefficientis approximately standard maintenance1.5,3.1,2.5,2.8,2.3times.(5) Under high temperatures,28d and84d of the chloride ion diffusion coefficient increases with theincrease of water-cement ratio, water-cement ratio is0.27, lithium slag content is15%,40%steel slagconcrete chloride ion diffusion coefficient is minimum. After Concrete suffers the temperature of50℃and105℃, concrete resistance to chloride ion penetration ability can also reach the level of RCM-Ⅲ andRCM-Ⅱ.When the water cement ratio concrete is same, the28d and84d of the chloride ion permeabilitycoefficient with increasing temperature increases, and105℃for28d and84d of the chloride ion diffusioncoefficient is about50℃corresponding age1.5times. The concrete’s Chloride ion diffusion coefficient forheating preservation12h at50℃and105℃that is approximately1.6times and2.4times than the standardmaintenance.(6) In various stress levels, concrete chloride ion permeability coefficient decreased gradually withdecreasing water-cement ratio, its chloride ion penetration level respectively reach to RCM-Ⅲ,RCM-Ⅳand RCM-Ⅳgrade. With the extension of the curing period,the chloride ion permeabilitycoefficient of concrete stress level of30%of28d and84d Is smaller than the standard curing. When thestress levels is50%and80%, the chloride ion permeability coefficient of28d were1.4to1.6and3.0to3.4times than standard curing.