doi:10.3850/978-981-08-7920-4_S3-M004-cd

ABSTRACT

The cold asphalt mixes considered in this study are a combination of reinforced rubber highviscosity asphalt emulsion, ultra-rapid hardening cement and the aggregate. The quality of cold asphalt mixes evaluated on the basis of the Marshall stability test and the density test shows the same performance as conventional asphalt mixes. However, the cracks appear one month after repairing the surface around a manhole with cold asphalt mixes. The Marshall stability test dose not consider the time-dependent behavior of cold asphalt mixes. The present study evaluates the viscoelastic properties of cold asphalt repair material using a four element model that arranges the Maxwell model and the Voigt model in series. The material constants in the four element model are obtained by an indirect tensile test. It is confirmed that the material constants of cold asphalt mixes containing cement change gradually with time. The cracks are generated by factors that include the shrinkage of cold asphalt mixeswith temperature changes.

Keywords: Cold asphalt mixes, Viscoelasticity, Pavement, Repair material, Indirect tensile test, Time-dependent behavior.

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