Performance of New Non-Clinker Aluminum Dross Cement Curing Agent

Abstract

The growth of China's aluminum industry makes more and more waste aluminum dross, although there are some ways for recycling aluminum dross, but still cannot absorb its output. This paper attempts to develop an effective concrete curing agent with high content of aluminum ash so as to effectively solve the problems of waste residue accumulation. The properties of a new aluminum dross cement-curing agent based on industrial solid wastes combined with an activator are evaluated through orthogonal testing using standard testing methods for compressive strength, bending strength, setting time, soundness, and the water requirement of standard consistency. The influence of the curing conditions and the water to cement ratio on the strength obtained with the aluminum dross curing agent was also studied along with the durability to water erosion, resistance to sulfate attack and stability when subjected to dry/wet cycles or high temperature. The results obtained demonstrate that this new clinker-free aluminum ash curing agent provides good mechanical properties and a high resistance to water and sulfate attack. This material was also found to be suitable for use as a curing agent in soil solidification.