Experimental investigation on the effect of sasobit additive on the elastic modulus of Stone mastic asphalt

Abstract

This paper shows the results of an experimental study on the elastic modulus of Stone mastic asphalt 12.5 using sasobit additives with content of 1%, 2% and 3%. When using sasobit with increasing content, the G*/sin(δ) value increases correspondingly when compared at the same frequency and temperature; The mixing and compaction temperature of SMA using sasobit decreases compared to the mixing and compaction temperature of SMA without using sasobit. Attemperatures of 15°С, 30°С and 60°С, the elastic modulus of the SMA mixture using sasobit with different contents is higher than the elastic modulus of the control SMA mixture (without sasobit). The elastic modulus of the SMA mixture using sasobit with a content of 3% when tested at 15°C reached the highest value. The SMA mixture without sasobit when tested at 60°C had the smallest elastic modulus.