Orthogonal experimental study on influencing factors of prevention of concrete corrosion and efflorescence
LIU Jinyan
WU Min
Abstract：The effects of water-binder ratio(W/B),the content of silica fume,fly ash and slag on the corrosion resistant coef-ficient for concrete compressive strength "Kf" and the quality of concrete efflorescence "m" were discussed based on the orthogonal experiment,and the interaction between W/B and three kinds of mineral admixture was taken into account. The results show that the influence degree order for the two test indexes is basically same:the most important influential factor is W/B,followed by the content of silica fume,and the interaction between W/B and content of silica fume has significant effects;fly ash replacement has significant effects on the problems of efflorescence;while other factors and interactions have not obvious affection. Under separate addition of silica fume conditions,the change of "Kf" was used for the investigation of the interaction between W/B and the quali-ty of silica fume. It is shown that the optimum content of silica fume fluctuates with the change of water binder ratio. When the water binder ratio was below 0.33,the best silica fume content was below 5%,while when the water binder ratio was 0.33~0.43, the best content of silica fume was 10%.
Keywords：orthogonal experimentinteractionoptimum content of silica fumewater-binder ratiocorrosion resistant coefficient for concrete compressive strength
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 12-15,65 )