The Effect of Bayer Red Mud Blending on the Mechanical Properties of Alkali-Activated Slag-Red Mud and the Mechanism

In this paper, Bayer red mud and ground granulated blast furnace slag were formed into three different ratios (7:3, 5:5 3:7) of alkali-activated cementitious materials (AASR) using a water glass solution as the alkali activator. By studying compressive strength content, effect content on mechanical properties AASR was analyzed. The influence mechanism revealed by variation micro-porosity, connected porosity, Isothermal calorimetry, XRD, FTIR, BSE/EDS testing techniques. results show that specimens at same age decreases with increase content. On one hand, addition makes porosity in system increase, densification slurry structure decreases; other inert minerals participate hydration reaction to lesser extent, overall process becomes lower, generation products providing decreases.