Research on durability of mineral admixtures-based concrete prepared with sulfate-resistant and corrosion-inhibiting admixtures
ZHANG Xiaoping
MA Lin
YAN Han
WU Wenxuan
JI Xiankun
Abstract：Concrete with different strength grades was designed by changing the type and content of mineral admixtures,and the effect of the addition of sulfate-resistant and corrosion-inhibiting admixtures on the durability of concrete was studied.The results show that the durability of concrete is closely related to the design of mix proportion,mineral admixtures and sulfate-resistant and corrosion-inhibiting admixtures,with the order of effectiveness from strong to weak is:adding anti-corrosion and corrosion-inhibiting admixtures>adding admixture>improving strength grade.The incorporation of 5%sulfate-resistant and corrosion-inhibiting admixtures in C35 concrete can achieve the 28 d electric flux and 28 d chloride ion migration coefficient at 810 C and 3.9×10-12 m2/s respective-ly.The corrosion resistance coefficient after 150 sulfate dry-wet cycling is 0.86,and the carbonation depth at 28 days is 4 mm,which meets the excellent durability evaluation standard of concrete specified in JGJ/T 193-2009.
Keywords：concrete durabilitystrength grademineral admixturessulfate-resistant and corrosion-inhibiting admixtures
Publication Date：2025-11-25
Online Publishing Date：2025-12-15(First online date of this platform, not the publication date of the document)
Pages：4( 60-63 )