Effect of Active Filler Ratio on Indirect Tensile Strenght of Foam Bituminous Mixtures

Abstract

Highway pavement consruction has been one of the most important raw material comsuming area in the construction industry, which has been cousing huge amount of environmental demages and rapid diminish of raw material resources. In order to increase the usage rates of cold recycled pavement materials in road construction works, mixing with bitumen and hydraulic binders have often been used for some time in the pavement construction. These additional materials are; with the contribution they make to the performance of the mixes, they increase the usage rates of the recycled materials, thereby enabling the increase of environmental and economic advantages. In this study conducted to investigate the effects of foam bitumen and three different types of active filler material (cement, hydrated lime, fly ash) from these additives on cold recycled mixtures, different bitumen percentages with 70 / 100-100 / 150-160 / 220 grade penetration bitumen productions were used for. Different percentages of active filler materials were used in the productions. Thus, the roles of variables such as bitumen grade, bitumen percentage, active filler type and percentage were evaluated in the mixture. As evaluation criteria, ITSDRY (dry indirect tensile strenght), ITSWET (wet indirect tensile strenght), TSR (tensile strenght retain) and flow parameters were used. Data obtained as a result of the experimental study; the use of cement from active filler products and increasing the percentage of cement in the mixture, using bitumen with high penetration as a bitumen and reducing the percentage in the mixture showed that the mixtures had a positive effect on ITS values. However, the decrease in the bitumen percentage and the increase in the cement percentage have reduced the flow values of the material.

Keywords

• Active filler
• indirect tensile strenght
• foam bitumen

Effect of Active Filler Ratio on Indirect Tensile Strenght of Foam Bituminous Mixtures

Abstract

Highway pavement consruction has been one of the most important raw material comsuming area in the construction industry, which has been cousing huge amount of environmental demages and rapid diminish of raw material resources. In order to increase the usage rates of cold recycled pavement materials in road construction works, mixing with bitumen and hydraulic binders have often been used for some time in the pavement construction. These additional materials are; with the contribution they make to the performance of the mixes, they increase the usage rates of the recycled materials, thereby enabling the increase of environmental and economic advantages. In this study conducted to investigate the effects of foam bitumen and three different types of active filler material (cement, hydrated lime, fly ash) from these additives on cold recycled mixtures, different bitumen percentages with 70 / 100-100 / 150-160 / 220 grade penetration bitumen productions were used for. Different percentages of active filler materials were used in the productions. Thus, the roles of variables such as bitumen grade, bitumen percentage, active filler type and percentage were evaluated in the mixture. As evaluation criteria, ITSDRY (dry indirect tensile strenght), ITSWET (wet indirect tensile strenght), TSR (tensile strenght retain) and flow parameters were used. Data obtained as a result of the experimental study; the use of cement from active filler products and increasing the percentage of cement in the mixture, using bitumen with high penetration as a bitumen and reducing the percentage in the mixture showed that the mixtures had a positive effect on ITS values. However, the decrease in the bitumen percentage and the increase in the cement percentage have reduced the flow values of the material.

Keywords

• Active filler
• indirect tensile strenght
• foam bitumen

References

1. [1] F. Xiao, S. Yao, J. Wang, X. Li and S. Amirkhanian, “A Literature Review on Cold Recycling Technology of Asphalt Pavement” Construction and Building Materials, vol. 180, pp. 579–604, 2018
2. [2] M. Bocci, A. Grilli, F. Cardone and A. Graziani, “A Study on the Mechanical Behaviour of Cement–Bitumen Treated Materials” Construction and Building Materials, vol. 25, no. 2, pp. 773–778, 2011
3. [3] C. Godenzoni, A. Graziani, E. Bocci and M. Bocci, “The evolution of the mechanical behaviour of cold recycled mixtures stabilised with cement and bitumen: field and laboratory study” Road Materials and Pavement Design, vol. 19, no. 4, pp. 856-877, 2017
4. [4] S.F. Brown and D. Needham, “A study of cement modified bitumen emulsion mixtures”. Proceedings of the Association of Asphalt Paving Technologists, 2000, pp. 92–121.
5. [5] B. Dolzycki, M. Jaczewski and C. Szydlowski, “The long-term properties of mineral cement-emulsion mixtures” Construction and Building Materials, vol. 156, pp. 799–808. 2017
6. [6] A. Graziani, C. Iafelice, S. Raschia, D. Perraton and A. Carter, “A procedure for characterizing the curing process of cold recycled bitumen emulsion mixtures” Construction and Building Materials, vol. 173, 754–762, 2018
7. [7] Wirtgen (2012)– Wirtgen Cold Recycling Technology, Wirtgen Cold Recycling Manual, Germany.
8. [8] A. Graziani, C. Godenzoni, F. Cardone and M. Bocci, “Effect of curing on the physical and mechanical properties of cold-recycled bituminous mixtures” Materials & Design, vol. 95, pp. 358–369, 2016

9. [9] F. Cardone, A. Grilli, M. Bocci and A. Graziani, “Curing and temperature sensitivity of cement–bitumen treated materials” International Journal of Pavement Engineering, vol. 16, no. 10, pp. 868-880, 2014
10. [10] K.M. Muthen, “Foamed Asphalt Mixes Mix Design Procedure” Report. CR-98/077, Dec. 1998.
11. [11] G.M. Arguelles, F. Giustozzi, M. Crispino and G.W. Flintsch, “Investigating physical and rheological properties of foamed bitumen” Construction and Building Materials, vol. 72, pp. 423-433, 2014
12. [12] A. Diab and M. Enieb, “Investigating influence of mineral filler at asphalt mixture and mastic scales” International Journal of Pavement Research and Technology, vol. 11, 213–224, 2018
13. [13] S. Khosravifar, “Design and mechanical properties of foamed asphalt stabilized base material” M. S. thesis, University of Maryland, Maryland, 2012.
14. [14] R. Taha, A.A. Harthy, K.A. Shamsi and M.A. Zubeidi, “Cement stabilization of reclaimed asphalt pavement aggregate for road bases and subbases” Journal of Materials in Civil Engineering, vol. 14, no. 3, pp. 239-245, 2002
15. [15] H.A.A. Wahhab, M.G. Baig, I.A. Mahmoud and H.M. Kattan, “Study of road bases construction in Saudi Arabia using foam asphalt” Construction and Building Materials, vol. 26, pp. 113–121, 2012
16. [16] P. Fu, D. Jones and J.T. Harvey, “The effects of asphalt binder and granular material characteristics on foamed asphalt mix strength” Construction and Building Materials, vol. 25, pp. 1093-1101, 2011
17. [17] S.S. KAR, A.K. SWAMY, D. TIWARI and P.K. JAIN, “Impact of recycled asphalt pavement on properties of foamed bituminous mixtures” The Baltic Journal of Road and Bridge Engineering, vol. 13, no. 1, pp.14–22, 2018
18. [18] M. Iwanski and A.C. Kowalska, “Laboratory study on mechanical parameters of foamed bitumen mixtures in the cold recycling technology” Procedia Engineering, vol. 57, pp. 433 – 442, 2013
19. [19] E. Romeo, G. Betti, A. Marradi and G. Tebaldi, “Effect of active fillers on cracking performance of bitumen-stabilised materials” Road Materials and Pavement Design, vol. 19, no. 7, pp. 1563-1574, 2018