水性环氧乳化沥青的制备及其混合料性能研究

发布时间：2018-03-10 10:27

本文选题：水性环氧树脂乳液　切入点：改性乳化沥青　出处：《重庆交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着我国道路网络的不断延伸,道路交通量急剧增加,公路路面的养护工作日趋严峻,路面养护急需不受气候条件限制的高性能修补材料,而水性环氧乳化沥青混合料作为一种优良的修补材料,能在常温下对路面进行快速修补。为此,本文开展环氧乳化沥青及混合料的研究。依据水性环氧乳化沥青及其混合料的研究现状和存在的问题,本文主要进行如下研究： ①选用赋予环氧树脂柔韧性的脂肪族丙烯酸树脂PF5233作为环氧树脂增韧改性剂,多元胺类固化剂T450作为柔性树脂体系固化剂,乳化剂PF108作为制备水性环氧树脂乳液的乳化剂。根据本实验的目的,考虑固化时间,综合考虑选用E-51/PF5233=1:1的组分作为拌制混合料的胶结料中环氧体系的配方。采用相反转法制备水性环氧树脂乳液,选用PF108乳化剂,其用量为10%。采用电子显微镜观察水性环氧树脂乳液的微观形貌,结果显示环氧树脂较均匀地分布在介质水中。 ②通过对乳化沥青的乳化机理和乳化条件的分析,选用阴离子型乳化剂U-58作为沥青乳化剂,其用量为1.1%。采用电子显微镜观察乳化沥青的微观形貌,结果显示乳化效果较好。 ③通过对改性乳化沥青的改性机理的分析及其制备方法的对比,水性环氧树脂乳液、固化剂和乳化沥青对环氧乳化沥青性能的影响分析,对胶结料进行界面拉拔试验和界面拉伸试验,结果显示：当水性环氧乳液与乳化沥青的比列为1：1时,固化时间满足实验要求,抗拉强度较强,断裂伸长率符合规范要求。 ④在配制好水性环氧乳化沥青的基础上,对环氧乳化沥青混合料配合比进行优化设计,并对其路用性能进行了系统的研究。路用性能表明,环氧乳化沥青混合料具有良好的高温稳定性、水稳定性及低温性能,且开放交通时间满足施工要求。 ⑤探讨了在工程应用中乳化剂用量、用水量、填料及拌合条件等因素对施工性能的影响,并提出了相应地注意事项。
[Abstract]:With the continuous extension of the road network in our country, the traffic volume of the road increases rapidly, and the maintenance work of the road surface becomes more and more serious. The maintenance of the road surface is in urgent need of high performance repair materials which are not restricted by the climatic conditions. As an excellent repair material, waterborne epoxy emulsified asphalt mixture can quickly repair the pavement at room temperature. Therefore, the study of epoxy emulsified asphalt and its mixture is carried out in this paper. According to the current research situation and existing problems of waterborne epoxy emulsified asphalt and its mixture, the main research in this paper is as follows:. (1) the fatty acrylic resin (PF5233), which gives flexibility to epoxy resin, was selected as toughening modifier for epoxy resin, and the polyamine curing agent T450 was used as curing agent for flexible resin system. The emulsifier PF108 is used as emulsifier to prepare waterborne epoxy emulsion. According to the purpose of this experiment, the curing time is considered. The composition of E-51 / PF5233C-1 / 1 is considered as the formulation of epoxy system in the binder of mixed mixture, the waterborne epoxy emulsion is prepared by reverse conversion method, and the PF108 emulsifier is used. The microcosmic morphology of waterborne epoxy resin emulsion was observed by electron microscope. The results showed that the epoxy resin distributed uniformly in the medium water. 2 through the analysis of emulsification mechanism and emulsification conditions of emulsified asphalt, anionic emulsifier U-58 was selected as asphalt emulsifier, and its dosage was 1.1. The microscopic morphology of emulsified asphalt was observed by electron microscope. The results showed that the emulsifying effect was better. (3) by analyzing the modification mechanism of modified emulsified asphalt and comparing its preparation methods, the effects of waterborne epoxy resin emulsion, curing agent and emulsified asphalt on the performance of epoxy emulsified asphalt were analyzed. The results show that when the ratio of waterborne epoxy emulsion to emulsified asphalt is 1: 1, the curing time meets the experimental requirements, the tensile strength is strong, and the elongation at break meets the standard requirement. On the basis of preparing waterborne epoxy emulsified asphalt, the mixture ratio of epoxy emulsified asphalt mixture is optimized and its road performance is studied systematically. Epoxy emulsified asphalt mixture has good high temperature stability, water stability and low temperature performance, and open traffic time to meet the construction requirements. 5. The influence of emulsifier dosage, water consumption, filler and mixing condition on the construction performance is discussed, and the corresponding points for attention are put forward.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414

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