Abstract The use of by-products and recyclable materials in the production concrete has become an interesting alternative to mitigate environmental impacts, especially those generated by construction industry, as long their mechanical durability properties do not early compromise service life structures. resistance penetration harmful agents, such chloride ions, is important property since it d...

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 analy...

In this study, surface resistivity of the non-proprietary ultra-high-performance concretes (UHPCs) using traditional aggregates were evaluated. Four plain UHPCs batched various cementitious materials at a constant water-to-cementitious ratio 0.21 with an aggregate-to-cementitious 1.20. The 28-day surface-resistivity was measured for duration 60 minutes (10 intervals). influence testing time on ...