Evaluation of the Effect of Temperature on the Properties of Microsurfacing with RAP

This diploma thesis focuses on the assessment of the influence of R-material and the temperature of input materials on selected properties of microsurfacing mixtures. The theoretical part presents an overview of currently used emulsion-based maintenance technologies and a literature review concerning the use of R-material in microsurfacing. Special attention is paid to the influence of temperature on the behavior of emulsion mixtures and to the specific characteristics of mixtures containing R-material. The practical part of the thesis is focused on the laboratory preparation of microsurfacing mixtures with different R-material contents and on the evaluation of their properties at various temperatures of input materials. The investigated properties include breaking time, development of cohesion, and resistance to wheel tracking. Based on the obtained results, the suitability of partial and full replacement of virgin aggregate by R-material in microsurfacing mixtures was assessed. The results indicate that the behavior of microsurfacing mixtures containing R-material is significantly influenced by the temperature of the input materials and the R-material content, which should be taken into account when designing mixture compositions and their application.