抗冻型微表处沥青混合料的路用性能及抗冻性能

吴平; 王选仓

doi:10.11936/bjutxb2016080014

抗冻型微表处沥青混合料的路用性能及抗冻性能

doi: 10.11936/bjutxb2016080014

吴平^1,,
王选仓¹

1.
长安大学公路学院, 西安 710064
2.
内蒙古路桥有限责任公司,呼和浩特 010010

基金项目: 交通运输部建设科技资助项目(2013318J08220)；湖南省交通科技资助项目(201302)

详细信息

中图分类号: TU445
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出版历程
- 收稿日期: 2016-08-03
- 网络出版日期: 2022-09-09
- 刊出日期: 2017-01-01

Road Performance and Antifreeze Property of Antifreeze Micro-surfacing Asphalt Mixture

WU Ping^1
,,
WANG Xuancang¹

1.
School of Highway, Chang’an University, Xi’an 710064, China
2.
Inner Mongolia Road & Bridge Co., Ltd., Hohhot 010010, China

摘要

摘要: 为延迟路表积雪结冰、消除路面冻结,基于等体积置换法,设计了抗冻型微表处沥青混合料. 采用肯塔堡飞散试验、负荷轮黏砂试验、湿轮磨耗试验、表面构造深度测试和电导率试验等方法,研究了集料置换和填料置换2种类型微表处沥青混合料的路用性能与抗冻能力. 研究结果表明:盐化物的加入导致微表处沥青混合料湿轮磨耗值升高,轮辙变形率增加,表面构造深度降低. 填料置换型的抗冻微表处沥青混合料综合路用性能优于集料置换型微表处沥青混合料. 在实际使用过程中,混合料类型、盐化物质量分数、环境温度、使用时间等因素均会对抗冻型微表处沥青混合料的抗冻性能造成影响.
- 抗冻性能 /
- 微表处 /
- 路用性能 /
- 盐化物 /
- 抗冻沥青混合料
Abstract: To delay the snow or ice forming on road pavement, as well as to prevent the pavement-ice bonded layer, antifreeze micro-surfacing asphalt mixtures were designed based on the volume displacement method. Two types of asphalt mixture replaced with aggregate-salt and filler-salt were investigated by Cantabro test, loading wheel test, abrasion test, texture depth test, and conductivity test respectively. Results indicate that the abrasion test value increase by the addition of salt, meanwhile, the rutting ratio increases and the texture depth of the surface is reduced. It is suggested that the engineering performance of micro-surfacing containing filler-salt is better than that of containing aggregate-salt. In actual application, the mixture’s type, salt content, environmental temperature and service time have great impacts on the antifreeze performance of antifreeze micro-surfacing asphalt mixtures.
- antifreeze property /
- micro-surfacing /
- road performance /
- salt /
- antifreeze asphalt mixture
The authors have declared that no competing interests exist.

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图 1 级配组成

Figure 1. Gradation of asphalt mixture

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图 2 油石比与水泥质量分数对飞散损失率与黏砂值的影响

Figure 2. Effects of asphalt and cement contents on the mass loss and adhering sand value

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图 3 融雪剂质量分数对湿轮磨耗值的影响

Figure 3. Snow melt agent effects on WTAT

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图 4 融雪剂质量分数对轮辙宽度变形率的影响

Figure 4. Snow melt agent effects ontrack width

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图 5 融雪剂质量分数对混合料表面构造深度的影响

Figure 5. Snow melt agent effects ontexture depth

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图 6 融雪填料与融雪集料对微表处沥青混合料融雪性能的影响

Figure 6. Antifreeze performances of micro-surface asphalt mixtures affected by antifreeze filler and aggregate

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图 7 盐化物质量分数对混合料融雪性能的影响

Figure 7. Antifreeze performance affected by antifreeze agent content

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图 8 环境温度对融雪性能的影响

Figure 8. Antifreeze performance affected by environmental temperatures

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图 9 自融雪微表处沥青混合料的抗冻性能的耐久性评价

Figure 9. Sustainability of antifreeze performance of micro-surface asphalt mixture

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表 1 SBS改性乳化沥青技术指标

Table 1. Technical indexes of SBS modified emulsified asphalt

试验项目	试验结果	技术要求	试验方法
软化点(蒸发残留物)/℃	58.5	≥57	T 0606
针入度(100g, 25℃,5s)(蒸发残留物)/0.1mm	62.5	40~ 100	T 0604
延度(5℃ )(蒸发残留物)/cm	38.4	≥20	T 0605
1d储存稳定性/%	0.8	≤1	T 0655

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表 2 粗集料主要技术性质

Table 2. Technical index of coarse aggregates%

试验项目	试验结果	标准要求
压碎值	15.5	≤26
洛杉矶磨耗值	16.9	≤28
坚固性	1.5	≤12

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表 3 细集料主要技术性质

Table 3. Technical index of fine aggregates

试验项目	试验结果	标准要求
细集料砂当量/%	92.8	≥65
矿粉的表观密度/(g·cm^-3)	2.765	≥2.45
矿粉含水量/%	0.15	≤1

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参考文献(15)

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