Influences of Surface Characteristics and Modified Asphalt Binders on Interface Shear Strength


Faculty of Civil Engineering, Semnan University, Semnan, Iran


Weak bonding between layers of pavement leads to damages on the composite pavement. Bonding plays an important role in the durability and maintenance of composite pavement layers. The present study evaluates the factors effective in bond strength of the interface between concrete and asphalt pavements. The factors considered for this purpose include steel slag percentage in the concrete pavement, different types of modified bitumen, and rates of tack-coat. To measure the bond properties, direct shear and shear fatigue tests were carried out. In addition, texture depth and abrasion resistance were used in accordance with EN 1338 standard to measure the roughness properties of concrete pavement. The test results showed that 50% replacement of  steel slag with aggregate resulted in an increase in physical properties and texture depth of concrete pavement. Moreover, the results of the shear strength test of composite pavement revealed that the optimal rate of using tack-coat varies between 0.6 and 0.9 l/m2 and depends on the type of tack-coat. Finally, a higher shear strength was obtained for crumb rubber bitumen containing hydrated lime compared to crumb rubber modified bitumen and control bitumen.


1. Boulangé L, Sterczynskia F., "Study of interfacial interactions between bitumen and various aggregates used in roadconstruction", Journal of Adhesion Science and Technology, Vol. 26, No. 1, (2012), 163–173.
2.Khweir K, Fordyce D., "Influence of layer bonding on the prediction of pavement life", Proc. ICE-Transport, Vol. (156), (2003), 73–83.
3.Muench, S.T. and Moomaw, T., "De-bonding of hot mix asphalt pavements in Washington state: an initial investigation", WA-RD 712.1 and TNW 2008-10. Washington State Department of Transportation (WSDOT) and Transportation NorthwestRegional Center X , (2009).
4.Cho, S. H. "Evaluation of interfacial stress distribution and bond strength between asphalt pavement layers", A dissertation submitted to the Graduate Faculty of North Carolina State University in partial fulfillment of the requirements for the Degree of Doctor of Philosophy, North Carolina State University, (2016).
5.Huang W., Lv Q., and Tian, J., "Effects of Tack Coat Type and Surface Characteristics on Interface Bond Strength", International symposium on Frontiers in Road and Airport Engineering, (2015).
6.Hou D., Han M., Muhammad Y., Liu Y., Zhang F., Yin Y., Duan SH., Li J., "Performance evaluation of modified asphalt based trackless tack coat materials", Construction and Building Materials, Vol. 165, (2018), 385–394.
7. Cross, S.A., and P.P. Shrestha., "Guidelines for using prime and tack coats", Report FHWA-CFL/TD-02-002, Central Federal Lands Highway Division, Federal Highway Administration, Lakewood, Colorado, (2005).
8.Mrawira, D, Damude D.J., "Revisiting the effectiveness of tack coats in HMA overlays: The shear strength of tack coats in young overlays", Proceedings 14th Annual Conference, Canadian Technical Asphalt Association, (1999), 116-129.
9.Song, W., Shu, X., Huang, B., Woods, M., "Factors affecting shear strength between open-graded friction course and underlying layer", Construction and Building Materials, Vol. 101, (2015), 527–535.
10.Shahba, S., Ghasemi, M. and Marandi, S., "Effects of partial substitution of styrene-butadiene-styrene with granulated blast-furnace slag on the strength properties of porous asphalt", International Journal of Engineering-Transactions A: Basics, Vol. 30, No. 1, (2017), 40-47.
11.Shafabakhsh, G. and Ahmadi, S., "Evaluation of coal waste ash and rice husk ash on properties of pervious concrete pavement"
12.Kavussi, A., Jalili Qazizadeh, M., "Fatigue characterization of asphalt mixes containing electric arc furnace (EAF) steel slag subjected to long term aging", Construction and Building Materials, Vol. 72, (2014), 158-166.
13.Saxena S., Tembhurkar A.R., "Impact of use of steel slag as coarse aggregate and wastewater on fresh and hardened properties Number of loading cycles to failureTack coat application rate (l/m2)Control Bitumen concrete", Construction and Building Materials, Vol. 165, (2018), 126–137.
14.Amelian, S., Manian M., Abtahi S.M., Goli A., "Moisture sensitivity and mechanical performance assessment of warm mix asphalt containing by-product steel slag", Journal of Cleaner Production, Vol. 176, (2018), 329-337.
15.Fakhri M., Ahmadi A., "Recycling of RAP and steel slag aggregates into the warm mix asphalt: A performanceevaluation", Construction and Building Materials, Vol, 147, (2017), 630–638.
16.Groenniger J., Falchetto A.C., Isailovic I., Wang D., Wistuba M.P., "Experimental investigation of asphalt mixture containing Linz-Donawitz steel slag", Journal of Traffic and Transportation Engineering, (2017), 1-8.
17.Shafabakhsh G.H., Jafari Ani O., "Experimental investigation of effect of Nano TiO2/SiO2 modified bitumen on the rutting and fatigue performance of asphalt mixtures containing steel slag aggregates", Construction and Building Materials, Vol, 98, (2015), 692–702.
18.Iran highway asphalt paving code, Vice Presidency for Strategic Planning and Supervision. The Ministry of Road and Urban Development, Publication Number 234, Iran, (2011).
19.Othman, AM., "Evaluation of hydrated lime effect on the performance of rubber modified HMA mixtures", Journal of Elastomers & Plastics., Vol. 43, No.3, (2011) 221-237.
20.California Department of Transportation, Materials Engineering and Testing Services. Asphalt Rubber Usage Guide. 5900 Folsom Blvd, Sacramento, USA, (2003).
21.Tozzo, C. Fiore, N. and D’andrea, A., "Dynamic shear tests for the evaluation of the effect of the normal load on the interface fatigue resistance", Construction and Building Materials, Vol. 61, (2014), 200-205.
22.Song W.M, Shu X, Huang B.S., "Laboratory investigation of interlayer shear fatigue performance between open-graded friction course and underlying layer", Construction and Building Materials, Vol. 115, (2016), 381–389.
23.Metwally, Kh.A., Faried, A.S., Tawfik, T.A., "Significance of Blast Furnace Slag as Coarse Aggregate in Concrete", Life Science Journal, Vol.14, (2017), 1-6.
24.Sheng Li, Huang You, Liu Zhao-hui, "Experimental evaluation of asphalt material for interlayer in rigid–flexible composite pavement", Construction and Building Materials, Vol. 102, (2016), 699–705