Phase Structure Analysis of Nano Carbon Powder-Rubber Powder-SBS Modified Asphalt Based on Dynamic Mechanics

Abstract

Abstract: In order to analyze the phase structure of nano carbon powder, rubber powder and SBS in asphalt, the physical performance test and dynamic shear rheology test (DSR) of matrix asphalt and modified asphalt were first carried out, and secondly, use Han curve theory and vGP diagram analysis the compatibility and phase structure of three modifiers and matrix asphalt. The results show that under the same test conditions, 2% nano carbon powder-18% rubber powder-1.0% SBS (all above are mass fraction) modified asphalt has the best physical properties and better high-temperature stability. Compared with matrix asphalt, the asphalt with modifier the material exhibits microscopic phase separation. Under high temperature conditions, the phase structure of nano carbon powder-rubber powder-SBS modified asphalt is better. Combining the SEM images to explain the modification mechanism, it is concluded that the SBS modifier can effectively improve the skeleton structure system of nano carbon powder and rubber powder in asphalt.

Key words: modified asphalt, rheological test, phase structure, modification mechanism

CLC Number:

U414

WANG Mingwei, XIE Xiangbing, LI Guanghui, LAN Xiang. Phase Structure Analysis of Nano Carbon Powder-Rubber Powder-SBS Modified Asphalt Based on Dynamic Mechanics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(7): 2444-2453.

References

[1] ALONSO S, MEDINA-TORRES L, ZITZUMBO R, et al. Rheology of asphalt and styrene-butadiene blends[J]. Journal of Materials Science, 2010, 45(10): 2591-2597.
[2] ORTEGA F J, ROMAN C, NAVARRO F J, et al. Physico-chemistry control of the linear viscoelastic behaviour of bitumen/montmorillonite/MDI ternary composites: effect of the modification sequence[J]. Fuel Processing Technology, 2016, 143: 195-203.
[3] NAVARRO F J, PARTAL P, MARTÍNEZ-BOZA F J, et al. Novel recycled polyethylene/ground tire rubber/bitumen blends for use in roofing applications: thermo-mechanical properties[J]. Polymer Testing, 2010, 29(5): 588-595.
[4] ROOHOLAMINI H, IMANINASAB R, VAMEGH M. Experimental analysis of the influence of SBS/nanoclay addition on asphalt fatigue and thermal performance[J]. International Journal of Pavement Engineering, 2019, 20(6): 628-637.
[5] 杨志峰,李美江,王旭东.废旧橡胶粉在道路工程中应用的历史和现状[J].公路交通科技,2005,22(7):19-22.
YANG Z F, LI M J, WANG X D. The history and status quo of rubber powder used in roadbuilding[J]. Journal of Highway and Transportation Research and Development, 2005, 22(7): 19-22 (in Chinese).
[6] 孟旭,谢祥兵,李广慧,等.基于正交灰关联分析的纳米碳粉/橡胶粉复合改性沥青制备工艺试验研究[J].硅酸盐通报,2019,38(8):2642-2649.
MENG X, XIE X B, LI G H, et al. Experimental study on preparation technology of nano-carbon powder/rubber powder composite modified asphalt based on orthogonal grey relation analysis[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(8): 2642-2649 (in Chinese).
[7] 刘锋,王宏.抗车辙剂与橡胶粉复合改性沥青及混合料性能研究[J].公路,2017,62(1):209-214.
LIU F, WANG H. Research on technical performance of high modulus additive and SBR composite modified asphalt and its mixture[J]. Highway, 2017, 62(1): 209-214 (in Chinese).
[8] 姚辉,李亮,杨小礼,等.纳米材料改性沥青的微观和力学性能研究[J].建筑材料学报,2011,14(5):712-717.
YAO H, LI L, YANG X L, et al. Mechanics performance research and microstructure analysis of nanomaterials modified asphalt[J]. Journal of Building Materials, 2011, 14(5): 712-717 (in Chinese).
[9] ZHANG L, XING C, GAO F, et al. Using DSR and MSCR tests to characterize high temperature performance of different rubber modified asphalt[J]. Construction and Building Materials, 2016, 127: 466-474.
[10] 谭华,胡松山,刘斌清,等.基于流变学的复合改性橡胶沥青黏弹特性研究[J].土木工程学报,2017,50(1):115-122.
TAN H, HU S S, LIU B Q, et al. Study on viscoelastic properties of rubber modified asphalt based on rheology[J]. China Civil Engineering Journal, 2017, 50(1): 115-122 (in Chinese).
[11] 崔亚楠,邢永明,王岚,等.复合胶粉改性沥青的微观结构与流变特性[J].高分子材料科学与工程,2012,28(2):41-44.
CUI Y N, XING Y M, WANG L, et al. Micro-structure and rheological behavior of composite crumb rubber modified asphalt[J]. Polymer Materials Science & Engineering, 2012, 28(2): 41-44 (in Chinese).
[12] 何立平,魏建国,刘乐平,等.基于Han曲线的橡胶沥青结合料相态结构研究[J].公路交通科技,2017,34(5):10-18+94.
HE L P, WEI J G, LIU L P, et al. Study on phase structure of rubber asphalt binder based on Han curve[J]. Journal of Highway and Transportation Research and Development, 2017, 34(5): 10-18+94 (in Chinese).
[13] 郭猛.沥青胶浆的界面行为与机理分析[D].哈尔滨:哈尔滨工业大学,2012.
GUO M. Interfacial behavior of asphalt mastics and its mechanism[D]. Harbin: Harbin Institute of Technology, 2012 (in Chinese).
[14] HAN C D, BAEK D M, KIM J K, et al. Effect of volume fraction on the order-disorder transition in low molecular weight polystyrene-block-polyisoprene copolymers. 1. Order-disorder transition temperature determined by rheological measurements[J]. Macromolecules, 1995, 28(14): 5043-5062.
[15] HAN C D, KIM J, KIM J K. Determination of the order-disorder transition temperature of block copolymers[J]. Macromolecules, 1989, 22(1): 383-394.
[16] 梁明.聚合物改性沥青多相体系的流变学和形态学研究[D].东营:中国石油大学(华东),2017.
LIANG M. Rheology and morphology for the heterogeneous system of polymer modified asphalt[D]. Dongying: China University of Petroleum (Huadong), 2017 (in Chinese).
[17] GURP M V, PALMEN J. Time-temperature superposition for polymeric blends[J]. Clinical Cancer Research an Official Journal of the American Association for Cancer Research, 1998, 16(1): 141-153.
[18] PATHAK J A, COLBY R H, KAMATH S Y, et al. Rheology of miscible blends: SAN and PMMA[J]. Macromolecules, 1998, 31(25): 8988-8997.