Abstract
Pavement maintenance is an essential activity for maintaining the quality of the pavements. It is common for the ageing pavement to present problems of friction, so a proper solution must be provided. In this work, electric arc furnace slags are incorporated in slurry surfacing to provide adequate friction with this technique. The electric arc furnace slag was studied with physical, chemical, and mechanical tests to evaluate its suitability in the formation of the bituminous mixture. At the same time, different groups of samples were made with increasing percentages of bitumen emulsion and slag as coarse aggregate, determining the wear of the different families and the cohesion. The results reflected the excellent characteristics of the electric arc furnace slags, and an optimal combination of materials (slag, aggregate, water, and bitumen emulsion) could be obtained to develop slurry surfacing applicable to important traffic roads. This provided a use for the electric arc furnace slag in which its mechanical properties were used and a sustainable bituminous mixture with excellent characteristics and respectful of the environment was developed.
Highlights
IntroductionIt is common to design and build pavements with high performance and large investments that are not subsequently cared for in their useful life
Pavement maintenance is one of the primary activities within road infrastructures
The materials analyzed are electric arc furnace slags and silica sands
Summary
It is common to design and build pavements with high performance and large investments that are not subsequently cared for in their useful life. The pavement is an element that suffers throughout its service life, whether due to the loads of heavy traffic, vehicles, or exposure to the elements [1,2]. The characteristics that it had at the beginning of its construction have not been maintained unchanged during time. These maintenance tasks are not always carried out properly. The low availability of investment, the non-technical considerations in the investment, and the passage of time mean these tasks are not developed [3]. The lack of adequate maintenance in the pavement encourages the deterioration produced to grow exponentially, so the cost of these tasks in subsequent years will increase rapidly
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