Study on the Relationship between Chloride Ion Penetration and Resistivity of NAC-Cement Concrete

To explore the effect of nano-attapulgite clay (NAC) on durability concrete, two kinds NAC (calcined raw ore and calcined high viscosity ore: calcination at 650 °C for 2 h) were used to study their effects mainly discussing changes chloride ion permeability resistivity concrete with NAC. The strength was analyzed by testing compressive concrete. two-electrode method, four-electrode tester analyze relationship between method resistivity, analyzed. influence corrosion resistance measuring diffusion coefficient, coefficient established. process ions in theoretical derivation numerical simulation. results show that: calcining can improve while high-viscosity reduces At age 28 days, mixed is about 7.10% higher than that ordinary 4.32% lower common increases fastest, 56 days 15.8% 29.6% ore. There a good negative correlation coefficient. incorporation decreased 19.9% 49.4% compared ore, respectively. After 10 years decline, content 11.1% 23.2%