Experimental Study On Chloride-penetration Resistance And Early Shrinkage In Lithium Slag Composite Fly Ash Of High Performance Concrete

Based on the project of local practical of Xinjiang, with lithium slag an fly ash as mineral admixture makes concrete, finds major factors on the basis of analyses that influence on water-binder ratio, lithium slag, fly ash; then base on its, finds the optimal have combination that do experiment of Chloride-penetration Resistance and Self-shrinkage, get the following conclusion:Water-blinder ratio and lithium slag are major factors that it impact on compressive strength within28days age, lithium slag-saturation in mortar ranges from10%to15%, when mixing content is50%, it have a good performance that compressive strength, chloride diffusion coefficient, self-shrinkage; lithium slag composite fly ash of HPC chloride diffusion coefficient is much better than common concrete; lithium contributions to decrease of self-shrinkage for lithium slag composite fly ash of HPC; the durability lithium slag composite fly ash of HPC has so excellent performance because that lithium slag and fly ash improve structure of interfacial transition zone, also optimize chemical composition of hydration products in interfacial transition.