The Influence of Mesoscopic Characteristics of Mineral Powders Fillers on the Rutting Factor (G*/sinδ) of Asphalt Mortar

Abstract

This study aims to investigate the effect of the mesoscopic characteristics of mineral powder fillers on the rutting resistance of asphalt mortar. Extraction and sieving tests were used to obtain the buton rock asphalt (BRA) ash with particle size smaller than 0.075 mm, which is consistent with that of the conventional mineral powder. The mesoscopic characteristics of BRA ash and conventional mineral powder were measured by SEM image analysis and the osmotic free pressure water method. Mesoscopic structure models of structural and free asphalts in mortar were obtained. The 70# matrix asphalt was used to prepare two kinds of asphalt mortar with BRA ash and conventional mineral powders fillers. The rutting factor of the two asphalt mortars was tested by dynamic shear test (DSR). Test results show that the ash extracted from BRA has a similar mesoscopic classification with the conventional mineral powder. Still, its fractal dimensions are larger, indicating the particles in BRA ash have more complex shapes and rougher surfaces, which is beneficial for forming structural asphalt and subsequently increasing the rutting factor (G*/sinδ), i e, improving the rutting resistance of the asphalt mortar.

Keywords

asphalt mortar / mineral powder fillers / mesoscopic characteristic / rutting factor(G*/sinδ)

References

[1] Zhang Z Q, Wang Y C. Influence of Asphalt Mortar on Hot Mix Asphalt Performance at High and Low Temperature[J]. Journal of Chang’an University(Natural Science Edition), 2006, 26(02): 1-5.

[2] Sherre T K, Liao M C. Characteristics of Recycled Mineral Fillers and Their Effects on the Mechanical Properties of Hot-Mix Asphalt When Used as Limestone Filler Replacements[J]. Journal of Materials in Civil Engineering, 2022, 34(01): 1-13.

[3] Xu X Q, Tang S G, Yang J, et al. Influence of Filler-Asphalt Ratio on High-and-Low-Temperature Performance of Asphalt Mortar[J]. Journal of Chang’an University(Natural Science Edition), 2020, 40(04): 14-26.

[4] Lin M, Li P, Nian T F, et al. Effect of Mineral Powder on Rheological Properties of Asphalt Mastic and Microscopic Analysis[J]. Journal of Functional Materials, 2020, 51(06): 6150-6157.

[5] Lv D, Zheng C F, Qin Y, et al. Analyzing the Effects of the Mesoscopic Characteristics of Mineral Powder Fillers on the Cohesive Strength of Asphalt Mortars at Low Temperatures[J]. Construction and Building Materials, 2014, 65: 330-337.

[6] Zheng C F, Ma Z, Guo X D, et al. Coupling Effect of the Macro and Micro Characteristics of Mineral Powder on the Low-Temperature Performance of Asphalt Mortar[J]. Journal of Jilin University(Engineering and Technology Edition), 2017, 47(05): 1465-1471.

[7] Zhang B L, Wu P, Yan X Y, et al. Effect of Surface-Modified Fly Ash on Engineering Performance of Asphalt[J]. Journal of Chang’an University(Natural Science Edition), 2018, 38(03): 43-51.

[8] Zhang H, Liu X, Qiao Z. Research on Viscosity and Rheological Properties of Asphalt Mortar[J]. Materials Reports, 2019, 33(14): 2381-2385.

[9] Yang X K, Xiong R, Fan T Q, et al. Laboratory Investigation upon the Rheological Property of Activated Coal Gangue-Modified Asphalt Binder[J]. Materials Reports, 2015, 29(12): 135-139.

[10] Xu W, Wei J T, Chen Z X, et al. Evaluation of the Effects of Filler Fineness on the Properties of an Epoxy Asphalt Mixture[J]. Materials, 2021, 14(8): 2 003

[11] Tan T, Fan Z P, Xing C, et al. Evaluation of Geometric Characteristics of Fine Aggregate and Its Impact on Viscoelastic Property of Asphalt Mortar[J]. Applied Sciences, 2019, 10(1): 130

[12] Feng X J, Zhao M L, Chen W, et al. Research of Road Performances and Microcosmic Mechanisms of Coal Waste Powder Asphalt Mortar[J]. Journal of Building Materials, 2019, 22(01): 113-119.

[13] Li X M, Dou Y Y, Xu H N, et al. Interaction Ability and Rheological Properties of Asphalt Mastic under Freeze-Thaw Cycles[J]. Journal of Building Materials, 2019, 22(05): 831-838.

[14] Yan K Z, Zheng K G, Hu Y B. Application of Municipal Solid Waste Incinerator Ash in Asphalt Mortar[J]. Journal of Railway Science and Engineering, 2018, 15(10): 2509-2517.

[15] Fan Y G, Fan H. Introduction to the Design and Main Test Methods of American SHRP Asphalt Mixtures[J]. Communications Science and Technology Heilongjiang, 2003(10): 25–26

[16] Wu Y F, Liao J, Huang W Q, et al. Analysis of High-temperature Performance of Buton Rock Asphalt Modified Asphalt[J]. Journal of Chengdu University(Natural Science Edition), 2019, 38(01): 106-110.

[17] Lv T H, Zhang Y. A Research on Dynamic Rheology Properties of Buton Rock Asphalt Modified Asphalt Binder at High Temperature[J]. Journal of East China Jiaotong University, 2010, 27(04): 13-17. 21

[18] Zha X D, Tong L. Research on Modified Asphalt Performances of Indonesian Buton Rock Asphalt[J]. Journal of Changsha University of Science and Technology (Natural Science), 2007(04): 28–32

[19] Yin Y M, Zhang X N. Research on High Temperature Rheological Characteristics of Asphalt Mastics with Indonesian Buton Rock Asphalt(BRA)[J]. Journal of Wuhan University of Technology, 2010, 32(07): 85-89.

[20] Wu Y F, Liao J, Huang W Q, et al. Analysis on High-Temperature Performance of Buton Rock Asphalt Modified Asphalt Based on Multiple Stress Creep Recovery Test[J]. Journal of China & Foreign Highway, 2021, 41(05): 238-243.

[21] Liu S T, Cao W D, Li X J, et al. Principle Analysis of Mix Design and Performance Evaluation on Superpave Mixture Modified with Buton Rock Asphalt[J]. Construction and Building Materials, 2018, 176: 549-555.

[22] Zhang Z. Research on Performance of BRA Modified Asphalt[J]. IOP Conference Series: Earth and Environmental Science, 2021, 719(2): 022 086

[23] Zha X D, Hu J X, Liu A H, et al. Experimental Analysis on Material Properties for Buton Rock Asphalt[J]. Journal of Changsha University of Science & Technology(Natural Science), 2017, 14(04): 10-17.

[24] Liu L P, Qin J Z, Hong Y S. Effect of Production Processes on High Temperature Performance of Buton Rock Asphalt Mixture[J]. Journal of Wuhan University of Technology(Transportation Science & Engineering), 2018, 42(01): 44-47.

[25] Wu H R, Ye F, Xu X L. Microstructural Characteristics and Modification Mechanism of Inorganic Fine Particles in Buton Rock Asphalt[J]. Journal of Southwest Jiaotong University, 2019, 54(03): 556-564.

[26] Wang M, Lin F J, Liu L P. Dynamic Rheological Properties and Microscopic Characteristics of Ash Mastics[J]. Journal of Tongji University(-Natural Science), 2016, 44(04): 567-571.

[27] Brown C A, Savary G. Describing Ground Surface Texture Using Contact Profilometry and Fractal Analysis[J]. Elsevier, 1991, 141(2): 211-226.

[28] Ganti S, Bhushan B. Generalized Fractal Analysis and Its Applications to Engineering Surfaces[J]. Wear, 1995, 180(1): 17-34.

[29] Mandelbrot B B, Passoja D E, Paullay A J. Fractal Character of Fracture Surfaces of Metals[J]. Nature, 1984, 308(5961): 721-722.

[30] Wang Y L, Li L Y, Deng S Y, et al. Computation of the Surface Fractal Dimension(Ds) from Micro-Images of Sediment Particles[J]. Environmental Chemistry, 2006(04): 400–404

[31] Jiang S W, Jiang B, Li Y, et al. Calculation of Fractal Dimension of Worn Surface[J]. Tribology, 2003(06): 533–536

[32] Ge S R, Suo S F. The Computation Methods for the Fractal Dimension of Surface Profiles[J]. Tribology, 1997(04): 66–74

[33] Salehi R, Little D N, Masad E. Material Factors that Influence Anisotropic Behavior of Aggregate Bases[J]. Transportation Research Record, 2008, 2059(1): 20-30.

[34] Faheem A F, Hintz C, Bahia H U, et al. Influence of Filler Fractional Voids on Mastic and Mixture Performance[J]. Transportation Research Record, 2012, 2294(1): 74-80.

[35] Sharma V A, Chandra S B, Choudhary R C. Characterization of Fly Ash Bituminous Concrete Mixes[J]. Journal of Materials in Civil Engineering, 2010, 22(12): 1209-1216.