Properties of dry hydraulic road binder mixture with additional component of cement bypass dust

This paper is aimed at properties characterization of a designed binder mixture containing cement, fine natural limestone, cement bypass dust (BPD), and ground granulated blast furnace slag (GGBS) with an emphasis on a potential utilization of BPD into a normal hardening hydraulic road binder in accordance with the standard EN 13282-2. 10 wt.% addition of this potentially hazardous waste formed during the clinker production by burning alternative fuels was used into cement mixture. Physical and chemical properties of binder mixture of composition designed according to the recommended sheet of Slovak commercial product (DoroCem) were tested. Effect of additional component of BPD on behaviour of fresh mixture and properties of mortar specimen after 56 days of hardening was studied. The results prove that designed experimental mixture met the standard requirements for fineness and chemical composition of the powdered mixture, consistency of the fresh mixture and compressive strength of hardened mortar, and it could be used as hydraulic road binder. However, there is a need to investigate its durability as a potentially limiting factor of commercial use.