Experimental Study On The Correlation Between Mechanical And Durability Indexs Of Concrete

The safety and reliability of structure are greatly endangered by durability performance of concrete structure decline,is facing very serious problems in the engineering construction field.Continue along with large-scale infrastructure construction in our country,the durability of concrete is becoming more and more attention by scholars at home and abroad.In recent years,a number of experimental research on durability performance of concrete structure,was carried out by scholars at home and abroad.But the study is relatively small,aim at the correlation problem among mechanics and durability indicators of concrete,as well as macroscopic durability and microscopic pore structure.Therefore,experimental study on the correlation among mechanics and durability indexs of concrete is carried out,has an important significance.In this article,main research content is included in the following aspects:(1)Research background and significance are elaborated in the topic,the research status of durability is summaried at home and abroad,and the existing problems are discussed in the present study.(2)Experimental research on resistivity measurement,compressive strength,resistance to chloride ion penetration,scanning electron microscope,energy spectrum analysis,microscopic pore structure in gas adsorption method of mineral admixtures concrete are carried out.(3)Analysis and research on raw materials influence mechanics and durability,as well as microscopic pore structure of mineral admixture concrete,as well as correlation.Test results show:it shows a certain linear correlation or nonlinear regression relationship among water cement ratio,single dosage of cement,unilateral gelled material consumptionand and mechanics,durability,microscopic pore structure.(4)Analysis and research on the correlation among mechanics and durability indexs of mineral admixture concrete,test results show:it shows a certain linear correlation or nonlinear regression relationship among cube compressive strength,resistivity and chloride diffusion coefficient.(5)Analysis and research on the correlation between mechanics,durability indexs and microscopic pore structure of mineral admixture concrete,test results show:it shows a certain linear correlation or nonlinear regression relationship between cube compressive strength,resistivity,chloride diffusion coefficient and microscopic pore structure.