The Statistical Analysis on Physical and Rheological Properties of the Bitumen Modified with CR+SBS+Sasobit

Abstract

In this study, crumb rubber (CR), styrene-butadiene-styrene (SBS) and warm mix additive (Sasobit) modified bitumen binders were statistically investigated. The data set consisting of 32 binders modified by pure, CR, SBS, Sasobit and CR+SBS+Sasobit was studied. While additive ratios were defined as independent variables, results obtained from softening point, viscosity, dynamic shear rheometer and bending beam rheometer experiments were defined as dependent variables. Experiment results were analyzed individually and collectively using response surface methodology and pearson correlation methods. When the experiments were evaluated individually, very important relationships were found between additives rates and all experimental results. Actual values and estimated values obtained as a result of statistical analysis overlapped. It was determined that there were strong relationships between all experimental results when the pearson correlation between the experimental results was examined. Optimization was made according to the test results where the viscosity of 3000 cP (suitable workability), softening point and dynamic shear rheometer test results were maximum (superior high temperature performance) and the test result of bending beam rheometer was minimum (superior low temperature performance). According to this, CR, SBS and Sasobit rates were determined as 5.6%, 4% and 1%, respectively.

Keywords

• Bitumen
• crumb rubber
• styrene-butadiene-styrene
• Sasobit
• statistics.

References

1. [1] Aksoy A, Şamlioglu K, Tayfur S, Özen H. Effects of various additives on the moisture damage sensitivity of asphalt mixtures. Construction and Building Materials. 2005; 19: 11-18.
2. [2] Kaya D, Topal A, Gupta J, McNally T. Aging effects on the composition and thermal properties of styrene-butadiene-styrene (SBS) modified bitumen. Construction and Building Materials. 2020; 235: 117450.
3. [3] Kim TW, Baek J, Lee HJ, Choi JY. Fatigue performance evaluation of SBS modified mastic asphalt mixtures. Construction and Building Materials. 2013; 48: 908-916.
4. [4] Lu X, Isacsson U, Ekblad J. Influence of polymer modification on low temperature behaviour of bituminous binders and mixtures. Materials and Structures. 2003; 36: 652-656.
5. [5] Polacco G, Biondi D, Stastna J, Vlachovicova Z, Zanzotto L. Effect of SBS on rheological properties of different base asphalts. Macromolecular Symposia. 2004; 333-342.
6. [6] Yilmaz M, Çeloğlu ME. Effects of SBS and different natural asphalts on the properties of bituminous binders and mixtures. Construction and Building Materials. 2013; 44: 533-540.
7. [7] Yılmaz M, Kök BV. Determining the high temperature performance grade and workability of styrene-butadiene-styrene modified bituminous binders according to superpave system. Journal of the Faculty of Engineering and Architecture of Gazi University. 2008; 23: 811-819.
8. [8] Del Barco-Carrión AJ, García-Travé G, Moreno-Navarro F, Martínez-Montes G, Rubio-Gámez MC. Comparison of the effect of recycled crumb rubber and polymer concentration on the performance of binders for asphalt mixtures. Materiales de Construcción. 2016; 66.

9. [9] Picado-Santos LG, Capitão SD, Neves JM. Crumb rubber asphalt mixtures: A literature review. Construction and Building Materials. 2020; 247: 118577.
10. [10] Jamal M, Giustozzi F. Low-content crumb rubber modified bitumen for improving Australian local roads condition. Journal of Cleaner Production. 2020; 271: 122484.
11. [11] Attia M, Abdelrahman M. Enhancing the performance of crumb rubber-modified binders through varying the interaction conditions. International Journal of Pavement Engineering. 2009; 10: 423-434.
12. [12] Navarro FJ, Partal P, Martínez‐Boza FJ, Gallegos C. Influence of processing conditions on the rheological behavior of crumb tire rubber‐modified bitumen. Journal of applied polymer science. 2007; 104: 1683-1691.
13. [13] Akisetty CK, Lee SJ, Amirkhanian SN. High temperature properties of rubberized binders containing warm asphalt additives. Construction and Building Materials. 2009; 23: 565-573.
14. [14] Edwards Y, Isacsson U. Wax in bitumen: Part II—characterization and effects. Road materials and pavement design. 2005; 6: 439-468.
15. [15] Syroezhko AM, Baranov MA, Ivanov SN, Maidanova NV. Influence of natural additives and those synthesized by the Fischer-Tropsch method on the properties of petroleum bitumen and quality of floated asphalt. Coke and Chemistry. 2011; 54: 26-31.
16. [16] Wasiuddin NM, Saha R, King W. Effects of a wax-based warm mix additive on lower Compaction Temperatures. In Geo-Frontiers 2011: Advances in Geotechnical Engineering, 2011; 4614-4623.
17. [17] Kök BV, Yılmaz M, Akpolat M. Evaluation of the conventional and rheological properties of SBS+ Sasobit modified binder. Construction and Building Materials. 2014; 63: 174-179.
18. [18] Fazaeli H, Amini AA, Nejad FM, Behbahani H. Rheological properties of bitumen modified with a combination of FT paraffin wax (sasobit®) and other additives. Journal of civil Engineering and management. 2016; 22: 135-145.
19. [19] Del Barco Carrion AJ, Subhy A, Rodriguez MAI, Presti DL. Optimisation of liquid rubber modified bitumen for road pavements and roofing applications. Construction and Building Materials. 2020; 249: 118630.
20. [20] Aydemir EB, Ozkul MH. Investigation of effect of bitumen chemical composition, elastomeric polymer and paraffin wax additives on the properties of bitumen by using response surface method. Construction and Building Materials. 2020; 234: 117414.
21. [21] Memon AM, Sutanto MH, Napiah M, Khan MI, Rafiq W. Modeling and optimization of mixing conditions for petroleum sludge modified bitumen using response surface methodology. Construction and Building Materials. 2020; 264: 120701.
22. [22] Khairuddin FH, Yusoff NM, Badri K, Koting S, Choy PN, Misnon NA, Osmi SC. Design and optimization of polyurethane modified bitumen (PUMB) using response surface method. In IOP Conference Series: Earth and Environmental Science. 2020.
23. [23] Erkuş Y, Kök BV, Yilmaz M. Evaluation of performance and productivity of bitumen modified by three different additives. Construction and Building Materials. 2020; 261: 120553.