Development and Full-Scale Tests of Modified Polyurethane-Based Seamless Expansion Joints for Bridge

Abstract

Abstract: The service performance of seamless expansion joints made of polyurethane (PU) material for bridge structures was studied using full-scale tests and finite element models. First, three modified PU materials with different mix ratios were prepared. The initial setting time, tensile strength, tear strength, hardness, road adhesion, water absorption rate, resistance to rutting, and aging performance were tested and compared to determine the optimal PU mix ratio for seamless expansion joints for bridges. Then, four full-scale seamless expansion joint specimens were designed and fabricated using the selected PU material, and a corresponding finite element model was also developed. Finally, by comparing the experimental measurements and the finite element calculations, it is shown that the designed seamless expansion joint exhibits excellent service performance under uniaxial tension/compression, vertical deformation, and low-cycle fatigue loading conditions. Additionally, the research results indicate that setting a 45° inclination angle between the modified PU seamless expansion joint and the road surface could significantly improve the stress state and prevent early cracking at the joint.

Key words: polyurethane, seamless expansion joint, full-scale test, fatigue property, deformation, finite element analysis

CLC Number:

U444

LI Yan, LI Wen, ZHANG Huajian, HAN Lebing, TONG Teng, LI Xiaobo, YUAN Siqi. Development and Full-Scale Tests of Modified Polyurethane-Based Seamless Expansion Joints for Bridge[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(11): 3853-3865.

References

[1] 杨钦隆, 阳恩慧, 马博男, 等. 沥青填充式桥梁无缝伸缩缝材料黏弹性试验研究[J]. 市政技术, 2021, 39(11): 139-145.
YANG Q L, YANG E H, MA B N, et al. Experimental research on viscoelasticity of seamless expansion joints material of asphalt filled bridge[J]. Municipal Engineering Technology, 2021, 39(11): 139-145 (in Chinese).
[2] 任东亚, 梅煜康, 张家康, 等. 无缝伸缩缝沥青胶结料高温性能指标区分评价[J]. 建筑材料学报, 2021, 24(2): 440-446.
REN D Y, MEI Y K, ZHANG J K, et al. Distinguishing evaluation of high temperature performance index of seamless expansion joint asphalt binder[J]. Journal of Building Materials, 2021, 24(2): 440-446 (in Chinese).
[3] MOGAWER W S, AUSTERMAN A J. Evaluation of asphaltic expansion joints[R]. Department of Civil and Environmental Engineering, University of Massachusetts Dartmouth, 2004.
[4] 苗成涛. 合成聚氨酯胶结料在道路工程中的应用研究[J]. 合成纤维, 2023, 52(4): 74-77+81.
MIAO C T. Study on the application of synthetic polyurethane binder in road engineering[J]. Synthetic Fiber in China, 2023, 52(4): 74-77+81 (in Chinese).
[5] CHEN Q, WANG C H, LI Y W, et al. Performance development of polyurethane elastomer composites in different construction and curing environments[J]. Construction and Building Materials, 2023, 365: 130047.
[6] HUSSAIN H K, ZHANG L Z, LIU G W. An experimental study on strengthening reinforced concrete T-beams using new material poly-urethane-cement (PUC)[J]. Construction and Building Materials, 2013, 40: 104-117.
[7] WANG Y Q, SUN Q S, DING H J, et al. Investigation of interfacial bonding properties of polyurethane concrete and cement concrete/steel reinforcement[J]. Advances in Materials Science and Engineering, 2022, 2022: 1-28.
[8] 刘稼琛. 聚氨酯粉煤灰砂浆复合材料在钢拱桥抗震加固工程中的应用研究[D]. 哈尔滨: 哈尔滨工业大学, 2012.
LIU J C. Study on the application of polyurethane fly ash mortar composite material in seismic reinforcement of steel arch bridge[D]. Harbin: Harbin Institute of Technology, 2012 (in Chinese).
[9] ZHANG K X, SUN Q S. The use of wire mesh-polyurethane cement (WM-PUC) composite to strengthen RC T-beams under flexure[J]. Journal of Building Engineering, 2018, 15: 122-136.
[10] 张勇, 刘志, 赵微微, 等. 浅谈铁路混凝土桥梁用聚氨酯弹性体梁端防水装置[J]. 聚氨酯工业, 2020, 35(6): 32-34+47.
ZHANG Y, LIU Z, ZHAO W W, et al. The introduction of polyurethane elastomer waterproof device for beam end of railway concrete bridge[J]. Polyurethane Industry, 2020, 35(6): 32-34+47 (in Chinese).
[11] 陈会凡, 邓苗义. 聚氨酯弹性混凝土在连霍高速桥面伸缩缝病害维修中的应用[J]. 混凝土与水泥制品, 2011(6): 61-64.
CHEN H F, DENG M Y. Application of polyurethane elastic concrete in the repairing disease of expansion joint for bridge of Lianhuo expressway[J]. China Concrete and Cement Products, 2011(6): 61-64 (in Chinese).
[12] 张梅, 庞金录, 杨光付, 等. 高速铁路桥梁用低模量聚氨酯伸缩缝[J]. 化学推进剂与高分子材料, 2011, 9(3): 69-72.
ZHANG M, PANG J L, YANG G F, et al. Expansion joint of low modulus polyurethane in high-speed railway bridge[J]. Chemical Propellants & Polymeric Materials, 2011, 9(3): 69-72 (in Chinese).
[13] OLSZEWSKI A, KOSMELA P, PIASECKI A, et al. The impact of isocyanate index and filler functionalities on the performance of flexible foamed polyurethane/ground tire rubber composites[J]. Polymers, 2022, 14(24): 5558.
[14] SCHUTT N L, CAMPBELL L G, RUDOLPH J J, et al. Effect of storage time and temperature on the setting times of two composite resins[J]. The Journal of Prosthetic Dentistry, 1982, 47(4): 407-410.
[15] American Society for Testing and Materials. Standard test method for tensile properties of plastics: ASTM D638[S]. West Conshohocken: ASTM International, 2014.
[16] American Society for Testing and Materials. Test method for rubber property—durometer hardness: ASTM D2240—91[S]. West Conshohocken: ASTM International, 1995.
[17] American Society for Testing and Materials. Standard test method for water absorption of plastics: ASTM D570—98[S]. West Conshohocken: ASTM International, 2018.
[18] BOUBAKRI A, HADDAR N, ELLEUCH K, et al. Influence of thermal aging on tensile and creep behavior of thermoplastic polyurethane[J]. Comptes Rendus Mécanique, 2011, 339(10): 666-673.
[19] American Society for Testing and Materials. Standard test method for rubber property—tear resistance: ASTM D624[S]. West Conshohocken: ASTM International, 1981.
[20] 中华人民共和国交通运输部. 公路桥梁伸缩装置通用技术条件: JT/T 327—2016[S]. 北京: 人民交通出版社, 2017.
Ministry of Transport of the People's Republic of China. General technical requirements of expansion and contraction installation for highway bridge: JT/T 327—2016[S]. Beijing: China Communications Press, 2017 (in Chinese).
[21] 李杰, 马子蔚, 杨大雨, 等. 行车速度对异型拱桥冲击系数的影响分析[J]. 公路, 2022, 67(12): 203-210.
LI J, MA Z W, YANG D Y, et al. Analysis of influence of driving speed on impact coefficient of special-shaped arch bridge[J]. Highway, 2022, 67(12): 203-210 (in Chinese).
[22] European Organization for Technical Approvals. Guideline for European technical approval of expansion joints for road bridges: ETAG 032[S]. Brussels: European standards technical committee, 2013.