老化条件下聚丙烯纤维改性乳化沥青及其微表处混合料性能分析
U414; 为探究老化条件下聚丙烯(polypropylene,PP)纤维改性乳化沥青及其微表处混合料的性能,以丁苯橡胶(SBR)改性乳化沥青为黏结剂,PP 纤维为改性剂,对不同老化条件下改性乳化沥青结合料蒸发残留物的流变性能展开研究,通过湿轮磨耗试验、车辙变形试验和低温劈裂试验探究 5d和 12d老化条件对微表处混合料路用性能的影响.研究结果表明:老化条件下改性乳化沥青结合料蒸发残留物的车辙因子和应力敏感性均随老化时间延长而增大,其高温抗车辙能力提升,而承受荷载变化下的弹性恢复能力下降.在 2.5%应变幅值时,相较于未改性的乳化沥青,老化后PP 纤维改性乳化沥青结合料蒸发残留物的疲劳寿命提高...
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| Published in | 大连理工大学学报 Vol. 64; no. 2; pp. 204 - 212 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
浙江省交通运输科学研究院,浙江 杭州 311305%长安大学 材料科学与工程学院,陕西 西安 710061%浙江顺畅高等级公路养护有限公司,浙江 杭州 310051
01.03.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-8608 |
| DOI | 10.7511/dllgxb202402011 |
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| Abstract | U414; 为探究老化条件下聚丙烯(polypropylene,PP)纤维改性乳化沥青及其微表处混合料的性能,以丁苯橡胶(SBR)改性乳化沥青为黏结剂,PP 纤维为改性剂,对不同老化条件下改性乳化沥青结合料蒸发残留物的流变性能展开研究,通过湿轮磨耗试验、车辙变形试验和低温劈裂试验探究 5d和 12d老化条件对微表处混合料路用性能的影响.研究结果表明:老化条件下改性乳化沥青结合料蒸发残留物的车辙因子和应力敏感性均随老化时间延长而增大,其高温抗车辙能力提升,而承受荷载变化下的弹性恢复能力下降.在 2.5%应变幅值时,相较于未改性的乳化沥青,老化后PP 纤维改性乳化沥青结合料蒸发残留物的疲劳寿命提高,抵抗疲劳损伤的能力提升明显.在 0.2%PP 纤维掺量下老化后微表处混合料的黏聚力提升11%,1h及 6d湿轮磨耗值分别降低 32%及 25%,轮辙变形率降低 46%,低温劈裂抗拉强度提升 16%,微表处混合料路用性能得到提升. |
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| AbstractList | U414; 为探究老化条件下聚丙烯(polypropylene,PP)纤维改性乳化沥青及其微表处混合料的性能,以丁苯橡胶(SBR)改性乳化沥青为黏结剂,PP 纤维为改性剂,对不同老化条件下改性乳化沥青结合料蒸发残留物的流变性能展开研究,通过湿轮磨耗试验、车辙变形试验和低温劈裂试验探究 5d和 12d老化条件对微表处混合料路用性能的影响.研究结果表明:老化条件下改性乳化沥青结合料蒸发残留物的车辙因子和应力敏感性均随老化时间延长而增大,其高温抗车辙能力提升,而承受荷载变化下的弹性恢复能力下降.在 2.5%应变幅值时,相较于未改性的乳化沥青,老化后PP 纤维改性乳化沥青结合料蒸发残留物的疲劳寿命提高,抵抗疲劳损伤的能力提升明显.在 0.2%PP 纤维掺量下老化后微表处混合料的黏聚力提升11%,1h及 6d湿轮磨耗值分别降低 32%及 25%,轮辙变形率降低 46%,低温劈裂抗拉强度提升 16%,微表处混合料路用性能得到提升. |
| Abstract_FL | To explore the performance of polypropylene(PP)fiber modified emulsified asphalt and its micro-surfacing mixture under aging conditions,choosing styrene butadiene rubber(SBR)modified emulsified asphalt as the binder and PP fiber as the modifier,the rheological properties of the evaporated residue of modified emulsified asphalt binder are studied under different aging conditions.The road performance of the micro-surfacing mixture is evaluated by wet-track abrasion test,wheel rutting deformation test and low-temperature splitting test under 5 d and 12 d aging conditions.The study results show that the rutting factor and the stress sensitivity of the evaporated residue of modified emulsified asphalt binder increase with the aging time.Its high temperature rutting resistance is improved,while its elastic recovery ability is reduced under the different loads.At 2.5%of strain amplitude,compared with unmodified emulsified asphalt,the fatigue life of the evaporated residue of PP fiber modified emulsified asphalt binder is increased after aging.And the ability of resisting fatigue damage is significantly improved.The adhesion of micro-surfacing mixture with 0.2%of PP fiber increases by 11%,the wet-track abrasion values at 1 h and 6 d decrease by 32%and 25%respectively,and the rutting deformation rate decreases by 46%,low temperature splitting tensile strength increases by 16%after aging.The road performance of the micro-surfacing mixture is improved. |
| Author | 金肃静 牛冬瑜 汪严 丁敏 裘秋波 |
| AuthorAffiliation | 浙江省交通运输科学研究院,浙江 杭州 311305%长安大学 材料科学与工程学院,陕西 西安 710061%浙江顺畅高等级公路养护有限公司,浙江 杭州 310051 |
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| Author_FL | DING Min WANG Yan JIN Sujing NIU Dongyu QIU Qiubo |
| Author_FL_xml | – sequence: 1 fullname: DING Min – sequence: 2 fullname: WANG Yan – sequence: 3 fullname: QIU Qiubo – sequence: 4 fullname: JIN Sujing – sequence: 5 fullname: NIU Dongyu |
| Author_xml | – sequence: 1 fullname: 丁敏 – sequence: 2 fullname: 汪严 – sequence: 3 fullname: 裘秋波 – sequence: 4 fullname: 金肃静 – sequence: 5 fullname: 牛冬瑜 |
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| DocumentTitle_FL | Performance analysis of polypropylene fiber modified emulsified asphalt and its micro-surfacing mixture under aging condition |
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| Keywords | 改性乳化沥青 polypropylene(PP)fibers modified emulsified asphalt 路用性能 road performance 老化 micro-surfacing mixture aging 微表处混合料 聚丙烯纤维 |
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| Publisher | 浙江省交通运输科学研究院,浙江 杭州 311305%长安大学 材料科学与工程学院,陕西 西安 710061%浙江顺畅高等级公路养护有限公司,浙江 杭州 310051 |
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| Title | 老化条件下聚丙烯纤维改性乳化沥青及其微表处混合料性能分析 |
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