|
|
|
| Influence of Air Void on the Performance of Paved Rubber Asphalt Stress Absorbing Layer |
| ZHANG Hong-bo1,2,3, PENG Wen-ju1, LIU Jun-bin1,4, LI Ping1, LI Yu-xuan1 |
1. School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha Hunan 410114, China;
2. Guangxi Key Laboratory of Road Structure and Materials, Nanning Guangxi 530007, China;
3. Guangxi Transportation Science and Technology Group Co. Ltd., Nanning Guangxi 530007, China;
4. Gezhouba Group Transportation Investment Co., Ltd, Wuhan Hubei 430000, China |
|
|
|
|
Abstract In order to study the influence of air void on the performance of paved rubber asphalt stress absorption layer, two typical air voids, 2.5% and 4.0% are selected. High temperature rutting test, water immersion Marshall test and freeze-thaw splitting were used, to evaluate high temperature performance and water stability of asphalt mixture respectively. Trabecular bending test and SCB crack propagation test were used to evaluate the stress absorption performance. After reducing the air air void from 4.0% to 2.5%, tests show that:the dynamic stability of mixtures decreases, but the decrease range is less than 10%; The residual stability and freeze-thaw splitting strength ratio were improved; the increase range of flexural tensile strain and strain energy density at -10℃ is 19.0%-46.6%, and the increase range is 2.1%-6.7% at 15℃; The growth range of fracture energy of three gradation mixtures is 11.0%-17.8%, and the growth range of flexibility index is 4.4%-40.0%. The results show that, the evaluation results of different test methods are not consistent. The flexural tensile strain and strain energy density of trabecular bending test, fracture energy and flexibility index of SCB crack propagation test should be used to evaluate the stress absorption performance of asphalt mixture comprehensively. The small air air void may reduce the high-temperature stability, but improve the water stability, low-temperature tensile performance and stress absorption performance. Therefore, the design of paved stress absorption layer with rubber asphalt has good application potential. when the designed air air void controlled at 2.0%-3.0%, it has better performance for the stress absorption layer.
|
|
Received: 02 March 2022
|
| Fund:Supported by the National Natural Science Foundation of China (51878075), the Guangxi Natural Science Foundation (No. 2018GXNSFAA294146), the Guangxi Science and Technology Major Special Project (No. AA18242032), the Guangxi Key R&D Program (Nos. AB19245019, AB17292035), the Xiaogan Natural Science Foundation (No. XGKJ2020010041) |
|
|
|
[1] WNAG Wei-na, ZHOU Sheng-xiong, QIN Yu. Research Progress of Indoor Reflective Crack Test Method[J]. Materials Reports, 2022, 36(5):79-88. (in Chinese)
[2] MA Pei-jian. Research on Multiple Application Technology of High Performance Paving Stress Absorbing Layer[D]:Xi'an:Chang'an University, 2012. (in Chinese)
[3] SUN Jie. Study on Properties of Stress Absorbing Layer Based on TPS Modified Asphalt[J]. Journal of China & Foreign Highway, 2017, 37(3):257-260. (in Chinese)
[4] YU Zheng, PENG De-qing, XIE Xin-hua. Design of Rubber Asphalt Stress Absorbing Layer[J]. Journal of China & Foreign Highway, 2015, 35(2):213-217. (in Chinese)
[5] JTG F40-2017. Technical Specification for Highway Asphalt Pavement Construction[S]. (in Chinese)
[6] DB45/T 1098-2014. Technical Specification for Construction of Asphalt Rubber Pavement[S]. (in Chinese)
[7] DBJ/T13-147-2012. Specification for Construction Technology of Stabilized Rubber Modified Asphalt Pavement[S]. (in Chinese)
[8] DB 36/T 744-2013. Technical Specification for Waste Tire Rubber Asphalt Pavement Construction[S]. (in Chinese)
[9] DG/TJ08-2109-2012. Technical Code for Asphalt Rubber Pavement[S]. (in Chinese)
[10] DB14/T 160-2015. Technical Code for Construction of Highway Modified Asphalt Pavement[S]. (in Chinese)
[11] DB11/T 916-2012. Technical Specification for Asphalt Rubber[S]. (in Chinese)
[12] DB13/T 1013-2009. Technical Standard for Tire Crumb Asphalt Rubber and Asphalt Rubber Hot Mixture[S]. (in Chinese)
[13] SUN Ya-zhen, FAN Dong, WANG Jin-cang, et al. Study on Mechanical Properties of AR-SAMI[J]. Journal of Guangxi University:Natural Science Edition, 2018, 43(1):314-324. (in Chinese)
[14] LI C M, ZHOU H M, WU Z Y et al, Alleviating Crack Properties of Crack Alleviating Mixture[C]//Second International Conference on Transportation Engineering. Chengdu:[s. n.], 2009.
[15] ZHOU Yan. Research on Properties and Key Evaluation Index of Stress Absorbing Layer Asphalt[D]:Xi'an:Chang'an University, 2010. (in Chinese)
[16] GERMANN F P, LYTTON R L. Methodology for Predicting the Reflection Cracking Life of Asphalt Concrete Overlays[R].College Station:Texas A&M University, 1979.
[17] HYUN N B, BEHNAM G, MEHDIET N, et al. Investigation of Reflective Cracking Mitigation Techniques[R]. Orlando:University of Central Florida, 2014.
[18] TOM S. Technical Bulletin on Design and Construction of Crack Attenuating Mixes (CAM)[R]. Austin:Texas Transportation Institute, 2010.
[19] JTG F40-2004. Technical Specification for Construction Highway Asphalt Pavement[S]. (in Chinese)
[20] EN 12697-44. Bituminous Mixtures-Test Methods for Hot Mix Asphalt-Part 44[S].
[21] AASHTO TP 124-2016. Standard Method of Test for Determining the Fracture Potential of Asphalt Mixtures Using Semicircular Bend Geometry (SCB) at Intermediate Temperature[S].
[22] WU Ling-ling, REN Qi-liang, LUO Li. High Temperature Stability Test for Asphalt Concrete of Pavement Materials in Highway[J]. Materials Review, 2020, 34(22):22083-22086. (in Chinese)
[23] GE Zhe-Sheng, HUANG Xiao-Ming, XU Guo-Guang. Evaluation of Asphalt-Mixture's Low-temperature Anti-cracking Performance by Curvature Strain Energy Method[J]. Journal of Southeast University:Natural Science Edition, 2002, 32(4):653-655. (in Chinese)
[24] FENG De-Cheng, CUI Shi-Tong, YI Jun-Yan et al. Evaluation Index of Low-temperature Asphalt Mixture Performance Based on Semi-circular Bending Test[J]. China Journal of Highway and Transport, 2020, 33(7):50-57. (in Chinese) |
|
|
|
2022, Vol. 16 
