摘 要

沥青路面在我国高级公路得到广泛的应用，但是由于沥青混合料性能差、施工工艺差、自然条件等因素的影响，沥青路面容易产生坑槽、松散、沉陷、网裂等损害，影响路面路面行驶质量，缩短沥青路面使用寿命。通过在网裂沥青路面涂刷表面处治材料可修复损害的路面，增加其使用寿命。本论文对两种不同的表面处治材料(RT-1000网裂处治乳液和RT-10000表处乳液)的基本性能进行研究，并在试验段施工和跟踪检测与记录经过这两种材料处治后的路面的使用性能。

本论文首先通过乳液基本性能试验获得两种材料的固含量和固体残留物的针入度、软化点以及延度，并且利用乳液贮存稳定性试验与破乳速度试验研究材料长期贮存的可行性和路面施工所需要的破乳时间。其次，我们在试验段进行施工并通过跟踪的渗水系数实验、摩擦系数试验和铺砂法构造深度试验评价路面渗水性能和抗滑性能，同时通过现场观察与拍照评估路面抗开裂性能与耐磨耗性能。最后在通过在试验段进行钻芯取样来了解两种表面处治材料的渗透效果。

实验结果显示RT-1000的固含量为50.27%，低于RT-10000表处乳液的54.52%，针入度大于160dmm，远高于RT-10000的62.6dmm，而软化点小于25℃，远低于RT-10000的57.2℃，延度大于100mm，高于RT-10000的73mm，这表明RT-1000材质较软，稠度较小，变形性较好，但高温性能较差；此外RT-1000乳液更适合于长期贮存并且施工所需破乳时间更短。两种乳液都可以使路面渗水系数降为0，而RT-1000处治后的路面粗糙度更低但抗滑性能较差。除此之外，RT-1000处治后的路面能保持比RT-10000更好的抗开裂性能与耐磨耗性能，而渗透效果也证明RT-1000修复效果要好于RT-10000。

关键词：沥青路面；网裂；表面处治；试验段施工；跟踪检测

Abstract

Asphalt pavements are widely applied in China's senior highways. However, due to the factors such as poor performance of asphalt mixture, poor construction process and natural conditions, asphalt pavements prone to generate damages such as potholes, loose, subsidence and alligator crack, which affect the driving quality and shorten the service life. By the application of surface treatment materials, the alligator cracked pavement can be repaired and thus increase the service life. This paper investigates the basic properties of two different surface treatment materials including RT-1000 crack treatment emulsion and RT-10000 surface treatment emulsion. Test sections of these two treatment emulsions were carried out and the service performance was tracked and recorded at different periods of time.

The basic experiments were carried out to obtain test data on solid content, penetration, softening point and ductility of these two materials. The storage stability and emulsion breaking test was done to study the feasibility of long-term storage and the breaking time that needs for construction. After the construction of test section, the permeability, skid resistance and roughness of the pavements was tracked through the permeability coefficient test, friction coefficient test and sand patch test. The cracking resistance and abrasion resistance of pavement was evaluated by taking pictures in situ. Finally, some cores were drilled at the test sections to understand the penetration effect of two surface treatment materials.

Experimental results showed that the RT-1000’s solid content is 50.27%, lower than 54.52% of RT-10000. The penetration of RT-1000 was greater than 160dmm, which is far higher than 62.6dmm of RT-10000. With respect to softening point, RT-1000 was less than 25 ℃, which is much lower than 57.2 of the RT-10000. The ductility of RT-1000 was more than 100mm, which is higher than the 73mm of RT-10000. The above test results indicated that RT-1000 material is relatively soft with small consistency, large deformability but poor high temperature properties; in addition RT-1000 emulsion was more suitable for long-term storage and required shorter time for breaking. Two emulsions can both make the permeability coefficient decreased to 0, while the RT-1000 treated pavement had a lower roughness of but worse skidding resistance. Furthermore, the RT-1000 treated section showed better crack resistance and abrasion resistance than RT-10000 treated section. The penetration depth indication from the drilled cores also proved that RT-1000 had a better repair effect.

Keywords: Asphalt pavement; alligator cracks; surface treatment; test section construction; track test

目 录

摘 要 I

Abstract II

目 录 III

第一章 前 言 - 1 -

1.1 沥青路面的网裂 - 1 -

1.2 沥青路面的网裂的形成原因 - 2 -

1.3 沥青路面的网裂的处治方法 - 2 -

1.3.1 国外常用处治方法 - 3 -

1.3.2 国内常用处治方法 - 5 -

1.4 主要研究内容、目的及意义 - 6 -

1.4.1 研究的目的及意义 - 6 -

1.4.2 主要研究内容 - 7 -

1.5 技术路线 - 8 -

第二章 原材料及试验方法 - 9 -

2.1 原材料 - 9 -

2.1.1 乳液 - 9 -

2.1.2 耐磨骨料 - 9 -

2.2 试验方法 - 9 -

2.2.1 乳液基本性能试验 - 10 -

2.2.2 破乳后性能试验 - 16 -

第三章 乳液性能分析 - 20 -

3.1 乳液常规性能检测 - 20 -

3.2 乳液破乳速度试验 - 21 -

3.3 乳液与矿料粘附性实验 - 23 -

3.4 乳液贮存稳定性试验 - 24 -

第四章 试验段施工工艺与跟踪监测 - 25 -

4.1 试验段施工工艺 - 25 -

4.2 跟踪检测 - 26 -

4.2.1 表面构造深度 - 27 -

4.2.2 表面摩擦系数 - 28 -

4.2.3 渗水性能 - 30 -

4.2.4 抗开裂与耐磨耗性能 - 30 -

4.3 钻孔取芯 - 35 -

第五章 结 论 - 37 -

参考文献 - 38 -

致 谢 - 40 -

1. 前 言

1.1 沥青路面的网裂

21世纪以来，我国每年都以超过2000亿元的投资用于公路建设，截至2015年底，我国高速公路总里程达到12.43万公里，规模居世界第一。目前半刚性基层的沥青路面是我国高等级公路普遍采用的主要结构形式之一。由于沥青路面具有无接缝、表面平整、行车舒适、耐磨、抗滑性好、噪音低、养护维修简便、施工期短、安全性好及扬尘少等优点，所以是一种较理想的面层结构。但是当沥青路面长期暴露在大气环境下时，温度的变化、雨雪水的冲刷以及车辆反复荷载的作用会导致沥青路面产生网裂、松散、沉陷、唧浆、坑槽等病害，这些病害容易引起行车的颠簸，降低行车的舒适性，并可能造成道路安全事故。因此如何对出现病害的沥青路面进行处治成为现在道路交通领域一个重要的课题。