论文总字数：25225字

摘 要

我国的公路总里程随着公路以及高速公路的快速修建发展而越来越大。在施工、自然荷载以及行车荷载的作用下，道路的使用性能会下降，甚至出现损害，公路的养护维修逐渐被人们重视起来。传统的维修方式代价高，时间长，对交通的影响太大，而作为一种新兴的道路维修技术—高聚物注浆技术，异军突起，成为一种良好的维修方式。

高聚物注浆技术的近年来发展非常快速，并在全球范围内已经有大范围的使用经历，效果喜人。本文介绍了高聚物注浆技术以及相关的各类材料，材料应用的范围以及材料的量的选择就是对材料性能的掌握，然而发泡型高聚物混凝土的资料并不够具体，很多性能并没有相关的研究，所以要对高聚物混凝土的相关物理、力学性能进行研究，为其实际应用提供相关依据，确定它的路用性能的强弱。基于以上目的，进行了相关的研究，得出结论如下：

（1）通过吸水特性试验，确定吸水率与密度之间的拟合关系。表明虽然高聚物材料内部形成了高密封性的气泡，且材料防水性能好，但材料仍然具有一定的吸水性，吸水率随着密度的增大而变小。

（2）通过抗折强度试验，得到抗折强度与密度之间呈抛物线关系，随着密度的不断增大，抗折强度和最大弯曲力也不断变大，并且变大的速度越来越快。

（3）通过无侧限抗压试验，在高聚物密度比较小时，混凝土内部空隙大，含气量特别多，这就导致在承受荷载时，高聚物混凝土的变形比较大，说明此时的延性比较好。随着密度的增加，混凝土的脆性也不断变强，内部空隙小，含气量也少，所以破坏时的变形就比较小。而且，高聚物混凝土的平均模量及平均抗压强度随着密度的增大而增大，且完全满足道路的使用要求。

（4）通过劈裂抗拉试验，得到抗拉强度与密度之间为线性关系，在石子差不多的情况下，劈裂强度随着密度的增大而变大。高聚物混凝土的劈裂抗压强度主要取决于材料之间的粘合力，所以，石子与浆液的相对密度均会对结果产生很大的影响。在石子质量不变时，材料相互之间的粘合力随着浆液的增加而越来越强，最后形成的混凝土的劈裂强度越大。

关键词：发泡型；高聚物；注浆；混凝土；吸水率；抗折强度；抗压强度；抗拉强度

Abstract

With the rapid development of highway and expressway, the total mileage of highway is increasing. Highways' service performance will gradually decline to become damaged after highways are completed. It is caused by vehicles and natural factors, especially by increasing traffic and axle load, together with the design and construction defects left. Highway manage department is now concerning highways' maintenance and repair very much. Traditional repair methods have much deficiency. It costs high, long, and the impact on the traffic is too large. In this case, Polymer grouting technology, as a new road repair technology, has become a good repair method.

In recent years, Polymer injection technology has been developing very fast, and has already had a widely adopted in the world. The effect of Polymer injection technology is gratifying. The Polymer grouting technology and materials are introduced in this article. The foundation of material application is the mastery of material properties. The data of foamed polymer concrete is not specific, and much performance has not studied very detailed. Therefore the physical and mechanical properties of foamed polymer concrete are studied. The results of the experiments provide the basis for its practical application, and determine its road performance. Based on the above purposes, the relevant research is carried out. See the conclusion blew.

(1) Through the experiment of water absorption, the fitting relationship between water absorption and density is determined. Though the high sealing bubble is formed in the polymer material, the material still has certain water absorption. The water absorption rate decreases with the increase of the density.

(2) Through the flexural strength test, the relationship between the flexural strength and the density is parabola relation. As the density increases, the bending strength and the maximum bending strength are also becoming larger and larger and the speed of the change is increasing.

(3) Through the unconfined compression test, when the density of polymer is small, the Internal voids of foamed polymer concrete is big and the gas content of foamed polymer concrete is large. It leads to deformation of concrete is large. The ductility of foamed polymer concrete is better. With the increase of density, the brittleness of the concrete is also becoming stronger, the internal voids are small, and the gas content is also less, so the deformation of concrete is small. Moreover, the average compressive strength and average modulus of polymer concrete increase with the increase of density, and meet the requirements of the road.

(4) Through the splitting tensile test, the relationship between tensile strength and density is linear dependence. The splitting strength increases with the increase of density in case the stones are invariable. The splitting compressive strength of polymer concrete mainly depends on the adhesion between the materials, so that the relative density of the gravel and the slurry will have a great impact on the results. When the stones are invariable, the more adhesive force is, the greater the splitting strength is.

Keywords: foaming； polymer； grouting； concrete； water absorption； flexural strength； compressive strength； tensile strength

目录

摘要 I

Abstract III

第一章 绪论 1

1.1 引言 1

1.2 研究的必要性 2

1.3 研究路线 4

第二章 高聚物注浆技术及注浆材料的介绍 5

2.1 注浆技术及材料简介 5

2.1.1 注浆技术简介 5

2.1.2 注浆材料简介 6

2.2 高聚物材料简介 7

2.2.1 膨胀性 8

2.2.2 化学性能 8

2.2.3 技术特点 9

2.3 高聚物注浆技术简介 10

2.3.1 高聚物注浆技术的方法 10

2.3.2 高聚物注浆技术加固地基机理分析 11

2.3.3 高聚物浆与碎石的粘贴机理 12

2.4 高聚物注浆技术解决的问题 12

第三章 发泡型高聚物混凝土的路用性能试验研究 14

3.1 高聚物材料的吸水特性研究 14

3.1.1 模具与试件的制作 14

3.1.2 试验方法 15

3.1.3 试验结果及分析 15

3.2 高聚物材料的抗折强度试验 17

3.2.1 模具与试件的制作 17

3.2.2 试验方法 18

3.2.3 试验结果及分析 18

3.3 发泡型高聚物混凝土的无侧限抗压强度试验 20

3.3.1 模具与试件的制作 20

3.3.2 试验方法 21

3.3.3 石子试样的性质 22

3.3.4 试验结果及分析 23

3.4 发泡型高聚物混凝土的劈裂抗拉试验 28

3.4.1 模具与试件的制作 28

3.4.2 试验方法 28

3.4.3 试验结果及分析 29

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