论文总字数：15865字

摘 要

随着我国经济的发展，高速公路的需求量也在快速的增长。这不仅仅体现在高速公路的里程上，也体现在对高速公路的质量要求上。在过去的20多年里，我国修建了超过4万公里的高速公路，而开始修建的大部分高速公路是按照4车道设计的，如今很多高速公路已不能满足交通量的需求。

为适应区域经济发展，未来几年对原有道路进行改扩建是必要的。本文在借鉴国内外已有高速公路扩建方式研究成果的基础上，对高速公路已建道路的探伤及评价进行分析研究，并将详细介绍无损探伤的相关技术与作用；同时对拼接路面进行有限元分析，研究面层与基础新旧路面接缝的处置技术，着重强调路面拼接技术的重要性，对与路面拼接相关的技术进行探讨研究，为以后高速公路的扩建提供参考与经验。

关键词： 改扩建；旧路评价；厂拌热再生；路面拼接；沥青离析

Abstract

With the development of our country"s economy, the demand of the highway is in rapid growth. This not only embodies in the highway mileage, also reflect on the requirements about the quality of the highway. In the past 20 years, our country has built more than 40000 kilometers of the highway, and started to build most of the highway is designed according to four lanes, now a lot of highway cannot meet the needs of traffic flow.
In order to adapt to regional economic development, the next few years for reconstruction of old road is necessary. Based on the existing highway expansion mode at home and abroad for reference, on the basis of research achievements, the highway has been built road detection and evaluation analysis, and detailed introduced the related technologies and functions of nondestructive flaw detection; Finite element analysis was carried out on the Mosaic pavement at the same time, the surface and base of new and old pavement joint disposal technology, emphasis on the importance of pavement splicing technology, discusses related to pavement splicing technology research, experience and provide reference for future highway expansion.

Keywords: reorganization and expansion； Evaluation of old road； Hot in-Plant Reclaimed ； Pavement splicing；Asphalt segregation

目 录

摘要-----------------------------------------------------------------------------------------------------------------------------Ⅰ

Abstract-------------------------------------------------------------------------------------------------------------------Ⅱ

第一章 绪论---------------------------------------------------------------------------------------------------------------1

1.1选题背景及意义----------------------------------------------------------------------------------------------------1

1.2研究现状---------------------------------------------------------------------------------------------------------------1

1.2.1高速公路扩建工程中横向分布的选择研-----------------------------------------------------------2

1.2.2高速公路扩建工程中的拼接方法和拼接材料研---------------------------------------------2

1.3本文主要的研究内容----------------------------------------------------------------------------------------------2

第二章 对扩建旧路的评价-------------------------------------------------------------------------------------------3

2.1扩建方式的选择----------------------------------------------------------------------------------------------------3

2.2原有旧路的病害分析----------------------------------------------------------------------------------------------3

2.2.1美国沥青协会推荐的旧混合料检测和分析方法的----------------------------4

2.2.2青含量试验 ----------------------------------------------------------------------------------------------5

2.2.3针入度试验------------------------------------------------------------------------------------------------5

2.2.4级配试验---------------------------------------------------------------------------------------------------6

2.2.5旧路面集料试验-----------------------------------------------------------------------------------------6

2.2.6厂拌热再生的适用性-----------------------------------------------------------------------------------6

2.2.7旧路评价存在的问题-----------------------------------------------------------------------------------6

2.3针对测结果拟定的针对性措施 ---------------------------------------------------------------------6

第三章 路面拼接技术研究-------------------------------------------------------------------------------------------7

3.1面层混合料离析研究------------------------------------------------------7

3.2离析原因分析------------------------------------------------------------7

3.3离析解决方案------------------------------------------------------------7

3.3.1人工填料------------------------------------------------------------7

3.3.2对混合料的生产和运输加强控制----------------------------------------7

3.3.3摊铺工艺优化--------------------------------------------------------8

第四章 离析的检测方法------------------------------------------------------9

4.1肉眼法--------------------------------------------------------------------------------------------------------9

4.2钻芯法--------------------------------------------------------------------------------------------------------9

4.3核子密度仪法----------------------------------------------------------------------------------------------9

4.4红外法--------------------------------------------------------------------------------------------------------9

第五章 结论与展望 10

5.1本文主要结论-------------------------------------------------------------------------------------------10

5.2有待进一步解决的问----------------------------------------------------------------------------------10

致 谢-------------------------------------------------------------------------------------------------------------------11

参考文献(References)----------------------------------------------------------------------------------------------------12

第一章 绪论

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