[1]孙 敏,黄照亮,孙延超,等.温度对聚氨酯混合料力学特性的影响及本构关系[J].长安大学学报(自然科学版),2025,45(4):13-28.[doi:10.19721/j.cnki.1671-8879.2025.04.002]
　SUN Min,HUANG Zhao-liang,SUN Yan-chao,et al.Influence of temperature on mechanical properties and constitutive relationship for polyurethane mixtures[J].Journal of Chang’an University (Natural Science Edition),2025,45(4):13-28.[doi:10.19721/j.cnki.1671-8879.2025.04.002]
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温度对聚氨酯混合料力学特性的影响及本构关系()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第45卷
期数:
2025年4期
页码:
13-28
栏目:
道路工程
出版日期:
2025-07-30

文章信息/Info

Title:
Influence of temperature on mechanical properties and constitutive relationship for polyurethane mixtures
文章编号:
1671-8879(2025)04-0013-16
作者:
孙 敏1; 2; 黄照亮1; 孙延超3; 任帅宇1; 古路遥1; 毕玉峰4
(1. 山东建筑大学 交通工程学院,山东 济南 250101; 2. 山东高速集团 博士后科研工作站,山东 济南 250099; 3. 山东恒建工程监理咨询有限公司,山东 潍坊 261061; 4. 山东高速集团 创新研究院,山东 济南 250099)
Author(s):
SUN Min1; 2;  HUANG Zhao-liang1;  SUN Yan-chao3;  REN Shuai-yu1;  GU Lu-yao1;  BI Yu-feng4
(1. School of Transportation Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, China; 2. Postdoctoral Research Workstation, Shandong Hi-Speed Group, Jinan 250099, Shandong, China; 3. Shandong Hengjian Engineering Supervision Consulting Co., Ltd., Weifang 261061, Shandong, China; 4. Innovation Research Institute, Shandong Hi-Speed Group, Jinan 250099, Shandong, China)
关键词:
路面工程;  聚氨酯混合料;  单轴抗压试验;  单轴抗拉试验;  力学特性;  本构模型
Keywords:
pavement engineering;  polyurethane mixture;  uniaxial compression test;  uniaxial tensile test;  mechanical property;  constitutive model
分类号:
U414
DOI:
10.19721/j.cnki.1671-8879.2025.04.002
文献标志码:
A
摘要:
为探究聚氨酯混合料的力学特性,以多碎石聚氨酯混凝土(SPC-16和SPC-25)和悬浮密实型聚氨酯混凝土(PC-20)为试验对象,分别开展了20 ℃和60 ℃下单轴抗拉、单轴抗压、单轴贯入和动态模量等力学试验,监测了试件破坏过程,分析了温度和材料类型对应力应变曲线特征、强度、模量等指标的影响,并分别拟合了20 ℃和60 ℃下SPC-16、SPC-25和PC-20混合料单轴抗拉和单轴抗压本构模型。研究结果表明:聚氨酯混合料抗压强度为C40混凝土的50%～62%,抗压弹性模量仅为C40混凝土的3%～5%,具备较好的抗压力学特性; 当试验温度由20 ℃升到60 ℃时,聚氨酯混合料的单轴抗压峰值应变明显增加,单轴抗拉峰值应变减小,单轴抗拉强度下降40%～50%,抗拉弹性模量下降4%～30%,单轴抗压强度下降约40%,抗压弹性模量下降30%～70%,单轴贯入强度下降15%～35%,聚氨酯混合料力学特性稳定; 60 ℃下聚氨酯混合料的单轴贯入量上升了30%～80%,动态模量仍大于3 GPa,而2种沥青混合料单轴贯入量增加了1倍以上,聚氨酯混合料具备较好高温抗剪性能,满足高温工况使用需求; 3种聚氨酯混合料在不同加载频率下的相位角小于改性沥青混合料,弹性特征明显; 基于水泥混凝土本构模型拟合后的判定系数大于0.999,拟合精度高。综上所述,研究成果可为聚氨酯混合料的推广和实际工程应用提供理论依据。
Abstract:
To investigate the mechanical properties of polyurethane mixtures, using the stone-rich polyurethane concrete(SPC-16 and SPC-25)and suspended dense polyurethane concrete(PC-20)as test subjects, mechanical tests on the uniaxial tensile, uniaxial compression, uniaxial penetration, and dynamic modulus were performed at 20 ℃ and 60 ℃, respectively. The failure processes of specimens were monitored, and the effects of temperature and material type on stress-strain curve characteristics, strength, modulus, and other indicators were analyzed. Furthermore, the uniaxial tensile and compression constitutive models for SPC-16, SPC-25, and PC-20 mixtures at 20 ℃ and 60 ℃ were fitted, respectively. The research results indicate that the compressive strength of polyurethane mixture is 50%-62% that of C40 concrete, while the compressive elastic modulus is only 3%-5%, demonstrating favorable compressive mechanical properties. When the test temperature increases from 20 ℃ to 60 ℃, the peak compressive strain of polyurethane mixture significantly increases, while the peak tensile strain decreases. The uniaxial tensile strength decreases by 40%-50%, the tensile elastic modulus decreases by 4%-30%, the uniaxial compressive strength decreases by approximately 40%, the compressive elastic modulus decreases by 30%-70%, and the uniaxial penetration strength decreases by 15%-35%. The mechanical properties of polyurethane mixture remain stable. At 60 ℃, the uniaxial penetration of polyurethane mixture increases by 30%-80%, the dynamic modulus remains above 3 GPa, while the uniaxial penetrations of two asphalt mixtures are more than doubled in contrast, indicating that polyurethane mixtures exhibit superior high-temperature shear resistance and meet the requirements for high-temperature applications. The phase angles of the three polyurethane mixtures under different loading frequencies are smaller than those of modified asphalt mixtures, highlighting the pronounced elastic characteristics. The fitted constitutive model based on the cement concrete achieves an determination coefficient greater than 0.999, demonstrating a high fitting precision. In conclusion, the research findings provide a theoretical foundation for the promotion and practical engineering application of polyurethane mixtures.2 tabs, 23 figs, 31 refs.

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相似文献/References:

[1]唐娴,戴经梁,贾倩,等.参数自适应跟踪法预测高速公路路面使用性能[J].长安大学学报(自然科学版),2007,27(03):31.
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备注/Memo

备注/Memo:
收稿日期:2025-01-22
基金项目:国家自然科学基金项目(5240080702); 山东省自然科学基金项目(ZR2024ME093,ZR2022QE054); 山东高速集团有限公司创新科技项目(HSB 2021-72)
作者简介:孙 敏(1985-),女,山东台儿庄人,副教授,工学博士,E-mail:15253170143@163.com。
通信作者:毕玉峰(1971-),男,山东日照人,研究员,工学博士,E-mail:18866130036@163.com。
更新日期/Last Update: 2025-07-25