Published: 2025-05-27

Fatigue durability of recycled mixtures with added cement dusty by-products (UCPP) in base layers

Łukasz Skotnicki , Jarosław Kuźniewski

Abstract

This paper describes the analyses of an innovative road binder based on cement dusty by-products (UCPP) used in mineral-cement-emulsion (MCE) mixtures and mineral-cement mixtures with foamed asphalt (MCAS). Innovative UCPP binders have been used as a replacement for traditional cement. Novel hydraulic binders reduce the rigidity of MCE and MCAS mixtures, which limits thermal and fatigue cracking of the base layers. In laboratory testing, seven different binders were tested – based on UCPP, lime, and traditional cement. The effect of these binders on mechanical properties of recycled MCE and MCAS mixes was analysed. Significant changes in the stiffness modulus and fatigue durability of the conglomerates have been demonstrated. The testing found that these innovative binders can be applied in the mixtures used for base layers. Optimum binders for application in both MCE and MCAS have been identified. The identified correlations will allow to speed-up the design process and selection of road pavement constructions used in the cold deep recycling process.

Keywords:

fatigue durability, innovative road binder, mineral-cement-emulsion mixture, mineral-cement mixture with foamed asphalt, recycling

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Skotnicki, Łukasz, & Kuźniewski, J. (2025). Fatigue durability of recycled mixtures with added cement dusty by-products (UCPP) in base layers. Roads and Bridges – Drogi I Mosty, 24(2), 145–166. https://doi.org/10.7409/rabdim.025.007

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