深圳大学学报理工版

为了研究水泥路面环氧树脂磨耗层的抗滑衰变规律,制作环氧磨耗层试验板,进行加速磨耗试验,分析骨料用量、改性环氧树脂用量、骨料粒径和施工工艺等因素对抗滑衰变规律的影响,建立不同油石比和荷载作用次数下构造深度(tectonic depth,TD)和摆式摩擦仪表面摩擦系数(british pendulum number,BPN)的抗滑衰变模型,并利用工程实例通车半年后的检测数据对预估模型进行修正.结果表明,随着加载次数增加,不同用量骨料的TD和BPN值均减小,衰变速率随着骨料用量增多而加快,但TD和BPN终值仍然很高; 改性环氧树脂用量越大,TD和BPN初值越小,抗滑衰变速率越快,抗滑性能越差,推荐最佳油石比为0.25; 骨料粒径越大,TD和BPN初值越大,衰变速率越快,终值反而越小; 双层磨耗层施工工艺的抗滑耐久性最佳,单层次之,三层最差; 利用修正模型,计算比较1年后磨耗层的抗滑数据与实测值,表明抗滑衰变修正模型适用性良好.

In order to study the skid resistance of modified epoxy wear layer on cement pavement, we construct the test slab of modified epoxy wear and conduct the accelerated wear test. By analysing the effects of factors such as the amount of aggregate, the modified epoxy resin, the size of aggregate and the construction technology, we establish the skid resistance performance model of the tectonic depth(TD)and friction coefficient of british pendulum number(BPN)under different oil-stone ratios and load times and modify the model according to the test data after six months of traffic. The results show that TD and BPN of different aggregates decrease with the loading times. The decay rate increases with the aggregate dosage, while the final TD and BPN values are still high. The larger the amount of modified epoxy resin is and the smaller the initial values of TD and BPN are, the faster the decay rate of skid resistance is and the worse the skid resistance is. The best pitch ratio of 0.25 is recommended. It is also found that the larger the aggregate size is, the greater the initial values of TD and BPN are, the smaller the final values of TD and BPN are. The double-layer epoxy wear course is the best in skid resistance durability, followed by one layer, and epoxy wear course with three layers is the worst. The modified model is used to calculate the skid data of epoxy wear layer after a year, and the results are compared with the measured values, which shows that the modified model of skid resistance is applicable.

引言
1 试验
2 环氧磨耗层抗滑衰变影响因素
3 环氧磨耗层抗滑衰变模型预估
4 结论

表1 环氧树脂技术参数<br/>Table 1 Technical parameters of epoxy resin

表1 环氧树脂技术参数
Table 1 Technical parameters of epoxy resin

表2 玄武岩性能指标<br/>Table 2 Basalt performance index

表2 玄武岩性能指标
Table 2 Basalt performance index

表3 环氧磨耗层黏结材料的配合比<br/>Table 3 Material mixing ratio of epoxy wear layer

表3 环氧磨耗层黏结材料的配合比
Table 3 Material mixing ratio of epoxy wear layer

表4 混凝土配合比<br/>Table 4 Mix ratio of concrete

表4 混凝土配合比
Table 4 Mix ratio of concrete

图1 轮胎轨迹分布<br/>Fig.1 Tire track distribution

图1 轮胎轨迹分布
Fig.1 Tire track distribution

图2 不同骨料用量时构造深度的衰变规律<br/>Fig.2 TD law of different aggregates

图2 不同骨料用量时构造深度的衰变规律
Fig.2 TD law of different aggregates

图3 不同骨料用量时摩擦系数的衰变规律<br/>Fig.3 BPN law of different aggregates

图3 不同骨料用量时摩擦系数的衰变规律
Fig.3 BPN law of different aggregates

图4 不同环氧树脂用量时构造深度的衰变规律<br/>Fig.4 TD law of different amount of epoxy resin

图4 不同环氧树脂用量时构造深度的衰变规律
Fig.4 TD law of different amount of epoxy resin

图5 不同环氧树脂用量时摩擦系数的衰变规律<br/>Fig.5 BPN law of different amount of epoxy resin

图5 不同环氧树脂用量时摩擦系数的衰变规律
Fig.5 BPN law of different amount of epoxy resin

图6 骨料粒径不同时构造深度的衰变规律<br/>Fig.6 TD law of different aggregate size

图6 骨料粒径不同时构造深度的衰变规律
Fig.6 TD law of different aggregate size

图7 骨料粒径不同时摩擦系数的衰变规律<br/>Fig.7 BPN law of different aggregate size

图7 骨料粒径不同时摩擦系数的衰变规律
Fig.7 BPN law of different aggregate size

图8 施工工艺不同时构造深度的衰变规律<br/>Fig.8 TD law of different construction technics

图8 施工工艺不同时构造深度的衰变规律
Fig.8 TD law of different construction technics

图9 施工工艺不同时摩擦系数的衰变规律<br/>Fig.9 BPN law of different construction technics

图9 施工工艺不同时摩擦系数的衰变规律
Fig.9 BPN law of different construction technics

图10 预估模型的对比验证<br/>Fig.10 Comparison of estimated models

图10 预估模型的对比验证
Fig.10 Comparison of estimated models

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备注

引言

1 试验

2 环氧磨耗层抗滑衰变影响因素

3 环氧磨耗层抗滑衰变模型预估

4 结论

期刊信息

备注

引言

1 试 验

2 环氧磨耗层抗滑衰变影响因素

3 环氧磨耗层抗滑衰变模型预估

4 结 论

期刊信息

1 试验

4 结论