Evaluating the cracking resistance of Hot Mix Asphalt modified with calcium lignosulfonate at low and intermediate temperatures

Ziaee, Seyed Ali; Fatemi, Seyed Saeed; Bolouri Bazaz, Jafar; Shad, Rouzbeh; Saadatjoo, Seyed Amir

doi:10.24200/sci.2024.63259.8327

Evaluating the cracking resistance of Hot Mix Asphalt modified with calcium lignosulfonate at low and intermediate temperatures

Articles in Press

Document Type : Research Article

Authors

Seyed Ali Ziaee ¹

Seyed Saeed Fatemi ¹

Jafar Bolouri Bazaz ¹

Rouzbeh Shad ¹

Seyed Amir Saadatjoo ²

¹ Department of Civil Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

² Department of Civil Engineering, Iran University of Science and Technology, Tehran, Iran

10.24200/sci.2024.63259.8327

Abstract

One of the common types of failures in asphalt pavements is cracking. Considering the environmental importance of material recycling, in this research, calcium lignosulfonate (CLS) as a waste product of cellulose production, was used as a bitumen additive, and the cracking resistance of semi-circular bending (SCB) samples of asphalt mixtures containing bitumen modified with 5% to 20% CLS was investigated at low and medium temperatures. To measure the performance of asphalt mixtures, the parameters of fracture energy (Gf), fracture toughness (K1c), flexibility index (FI) and cracking resistance index (CRI) were used. Also, rotational viscosity (RV) test was performed to determine the pumpability of bitumens. The results showed that CLS particles can increase the stiffness and viscosity of bitumen in high-temperature conditions. However, it was lower than the maximum allowed amount. At low temperature, with the addition of CLS, K1c and Gf indices were increased, and their highest values were related to bitumen with a 15% additive. At intermediate temperature, Gf index was increased until before the critical load, and FI and CRI were increased up to 15% and then decreased slightly. But Gf index was increased with a decreasing trend after the critical load until the end.

Keywords

Asphalt mixture

recycled bituminous additive

fracture toughness

fracture energy

flexibility index

cracking resistance index

Subjects