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Comparison of physical and rheological properties of calcium carbonate-polypropylene composite and SBS modified bitumen
Graphical abstract Display Omitted
Highlights Physical and rheological properties of PPC modified binder were investigated and compared with the SBS modified binder. The temperature sensitivity of 21% PPC modification was 3 times better than the SBS modification. PPC modification gave better results than SBS modification in terms of rutting resistance. The low temperature performance of the 21% PPC and SBS modifications was similar. PPC modification gave better results than SBS modification when cost and performance were evaluated together.
Abstract In this study, applicability of calcium carbonate and polypropylene composite (PPC), which is widely used in plastics industry, in bitumen modification was investigated. The binders were tested with physical experiments (softening point, penetration, rotational viscosity, storage stability) and rheological experiments (bending beam rheometer, dynamic shear rheometer, multiple stress creep recovery). To demonstrate the advantage of PPC modification, the PPC and styrene–butadienestyrene (SBS) additived bitumen were compared considering performance and cost. Consequently, penetration decreased whereas softening point and viscosity increased when PPC was used in bitumen. The binder modified with 21% PPC showed twice rutting resistance of bitumen containing 3% SBS. 21% PPC, 3% SBS and 4% SBS showed similar influences on low temperature features of binder. PPC had produced bituminous binders that were resistant to deformation at medium and high temperatures, making them appropriate for heavy traffic conditions. According to black and Cole-Cole diagrams, the 21% PPC modification was the most dominant modification of the polymeric phase and flexibility. As a result, it was found that the 21% PPC modified binder can generally be considered as an alternative to the 4% SBS modified binder in terms of performance and cost.
Comparison of physical and rheological properties of calcium carbonate-polypropylene composite and SBS modified bitumen
Graphical abstract Display Omitted
Highlights Physical and rheological properties of PPC modified binder were investigated and compared with the SBS modified binder. The temperature sensitivity of 21% PPC modification was 3 times better than the SBS modification. PPC modification gave better results than SBS modification in terms of rutting resistance. The low temperature performance of the 21% PPC and SBS modifications was similar. PPC modification gave better results than SBS modification when cost and performance were evaluated together.
Abstract In this study, applicability of calcium carbonate and polypropylene composite (PPC), which is widely used in plastics industry, in bitumen modification was investigated. The binders were tested with physical experiments (softening point, penetration, rotational viscosity, storage stability) and rheological experiments (bending beam rheometer, dynamic shear rheometer, multiple stress creep recovery). To demonstrate the advantage of PPC modification, the PPC and styrene–butadienestyrene (SBS) additived bitumen were compared considering performance and cost. Consequently, penetration decreased whereas softening point and viscosity increased when PPC was used in bitumen. The binder modified with 21% PPC showed twice rutting resistance of bitumen containing 3% SBS. 21% PPC, 3% SBS and 4% SBS showed similar influences on low temperature features of binder. PPC had produced bituminous binders that were resistant to deformation at medium and high temperatures, making them appropriate for heavy traffic conditions. According to black and Cole-Cole diagrams, the 21% PPC modification was the most dominant modification of the polymeric phase and flexibility. As a result, it was found that the 21% PPC modified binder can generally be considered as an alternative to the 4% SBS modified binder in terms of performance and cost.
Comparison of physical and rheological properties of calcium carbonate-polypropylene composite and SBS modified bitumen
Erkuş, Yunus (author) / Vural Kök, Baha (author)
2022-12-20
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2011
Physical and Rheological Properties of Cup Lump Rubber Modified Bitumen
| Springer Verlag | 2022