Performance of foamed bitumen bound asphalt mixtures under various mixing and compaction temperatures
- Author Ali Saleh
- Co-Author László Gáspár
- DOI 10.17605/O
- Country : Hungary
- Subject : Civil Engineering
Keywords : bitumen, asphalt mixture, binder modification, industrial by-product, asphalt duration
Abstract
Foamed bitumen is an environmentally friendly technology for asphalt pavements needing reduced mixing and laying energy. However, its performance varies as a function of actual mixing and laying temperatures since foamed bitumen can be used at ambient temperatures. When these asphalt mixtures are produced at freezing degrees, their stability is considerably decreased. The optimum foaming parameters (water content and temperature) were identified based on the expansion ratio and the half-life of resulting foamed bitumen.
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