彩色乳化沥青制备技术及其路用性能研究

发布时间：2018-06-19 13:01

本文选题：彩色乳化沥青 + 制备工艺　；参考：《重庆交通大学》2015年硕士论文

【摘要】：对彩色路面的广泛应用标志着城市正快速步入现代化,它能有效改善道路空间环境,使路面与周围建筑更加协调。目前,彩色沥青路面普遍存在着造价高、推广难等问题。我国大批己经完工通车使用的道路进入到修整养护阶段,钻研推行经济、效果明显、便于掌握的预防性养护方法是一种趋势。乳化沥青和以乳化沥青为基础的微表处工艺是重要的预防性养护方法,是对路面进行快速修整的有效措施。不过,伴随着人们生活水平的不断提高,对丰富多彩的生活环境充满渴望。更重要的是,能源的严重匮乏以及传统的沥青路面施工技术的弊端给环境带来了沉重的负担,所以对彩色乳化沥青的研究成为必然趋势。本文的主要研究内容如下:首先初步确定制备彩色沥青的原材料(芳烃油、萜烯树脂、SBS、增塑剂DBP,氧化铁红),其中SBS选择两种备用,分别命名为1#SBS和2#SBS。其次,在确定彩色沥青各原料的配比基础上,通过对常规彩色沥青制备工艺进行分析,确定本课题制备彩色沥青的工艺,制备出1#SBS彩色沥青和2#SBS彩色沥青。对两种彩色沥青的性质进行检测。选取1#SBS彩色沥青进行后续研究。再次,通过对彩色乳化沥青的制备工艺和参数进行分析,初步确定彩色乳化沥青的制备工艺、乳化剂水溶液的PH值、乳化温度等参数。乳化剂、改性剂和稳定剂的用量通过如下步骤确定:①初步给出彩色乳化沥青的预选配比:油水比62:38、乳化剂1.8%、改性剂3.5%、稳定剂0.15%,改变乳化剂的用量,使其在0.6%~1.8%范围内变化,得出乳化剂量改变时,沥青材料性能的变化规律。最终确定沥青乳液乳化剂用量为1.4%。②在油水比62:38、乳化剂1.4%、稳定剂0.15%,通过改变改性剂SBS胶乳的用量使其分别为1%、2%、3%、4%、5%、6%,观察蒸发残留物的针入度、软化点、5℃延度变化情况。趋势图表明,SBS胶乳改性剂的加入能够使针入度降低,软化点和5℃延度升高。当SBS胶乳含量从1%增加到5%时,针入度和软化点两大指标变化明显,胶乳含量在5%~6%时,针入度和软化点变化较缓慢。而随着胶乳的量增加,延度是始终呈现出较快的增长趋势,SBS胶乳可以有效改善沥青材料的低温性能。将SBS胶乳的用量最终确定在5%。③在油水比62:38、乳化剂1.4%、改性剂5%配方下,稳定剂的量分别取0.05%、0.1%、0.15%、0.2%、0.25%,当稳定剂的用量为0.2%时,沥青乳液5d储存稳定性值最小。④综上,在油水比62:38、乳化剂1.4%、改性剂5%,稳定剂0.2%的配方下制备彩色乳化沥青,并对其性能指标进行检测。该彩色乳化沥青材料性能指标能够满足JTGF40-2004的要求,但是蒸发残留物的软化点为55℃,低于57℃,不可作为微表处的原料用于南方较炎热地区、重载交通路面和填补车辙,结合重庆地区常年温度较高的实际情况,应采取相应措施对该彩色乳化沥青的性能进行改进,再应用到工程中。另外,通过对制作混合料试件的加料拌和顺序、击实成型方法及养生条件进行试验研究,提出了一种彩色乳化沥青混合料的试验方法,从而确定混合料配合比设计方法。通过车辙试验、低温弯曲试验、黏附性试验、冻融劈裂试验,对不同环氧树脂掺量下彩色乳化沥青混合料的高温稳定性、低温稳定性和水稳定性进行研究,得出混合料性能的变化规律。
[Abstract]:The extensive application of the color pavement marks the city's rapid modernization. It can effectively improve the road space environment and make the pavement more coordinated with the surrounding buildings. At present, the color asphalt pavement has a high cost and difficult promotion. The economical, effective and easy to master preventive maintenance is a trend. The emulsified bitumen and the micro surface technology based on the emulsified asphalt are the important preventive maintenance methods. It is an effective measure for the rapid repair of the pavement. However, with the continuous improvement of people's living standards, the rich and colorful living environment is full of thirst. More importantly, the serious shortage of energy and the disadvantages of traditional asphalt pavement construction technology have brought a heavy burden to the environment, so the study of color emulsified asphalt becomes an inevitable trend. The main contents of this paper are as follows: first of all, the raw materials (aromatic oil, terpene resin, SBS, plasticizer DB) are preliminarily determined. P, iron oxide red), in which SBS selected two kinds of reserve, named 1#SBS and 2#SBS., respectively. On the basis of determining the ratio of each raw material of color bitumen, by analyzing the preparation process of conventional color bitumen, the technology of preparing color bitumen in this subject was determined, and 1#SBS color asphalt and 2#SBS color bitumen were prepared. The properties of two kinds of color bitumen were made. The quality is tested. 1#SBS color asphalt is selected for follow-up research. Thirdly, through the analysis of the preparation technology and parameters of the color emulsified asphalt, the preparation process of the color emulsified asphalt, the pH value of the emulsifier water solution, the emulsification temperature and other parameters are preliminarily determined. The dosage of emulsifier, modifier and stabilizer is determined by the following steps: 1. The pre selected ratio of color emulsified asphalt: oil and water ratio 62:38, emulsifier 1.8%, modifier 3.5%, stabilizer 0.15%, change the dosage of emulsifier, change the emulsifier in the range of 0.6%~1.8%, and get the change law of asphalt material properties when the emulsifying dose changes. Finally, the dosage of emulsifier of asphalt emulsion is 1.4%., 62:38, emulsifier 1.4, and emulsifier 1.4. %, stabilizer 0.15%, by changing the dosage of modifier SBS latex to make it 1%, 2%, 3%, 4%, 5%, 6%, observe the needle penetration, softening point and 5 deduction of the evaporating residue. The trend diagram shows that the addition of SBS latex modifier can reduce the penetration of the needle and increase the ductility and the ductility of the softening point and 5 temperature. When the content of SBS latex is increased from 1% to 5%, the needle entry The change of two major indexes of degree and softening point is obvious. When the latex content is 5%~6%, the change of needle penetration and softening point is slow. With the increase of the amount of latex, the ductility is always showing a fast growth trend, and the SBS latex can effectively improve the low temperature performance of the asphalt material. The dosage of SBS latex is finally determined in the 62:38, emulsifier of oil and water in 5%. 1.4%, under the formula of modifier 5%, the amount of stabilizer is 0.05%, 0.1%, 0.15%, 0.2%, 0.25%. When the dosage of stabilizer is 0.2%, the storage stability value of the asphalt emulsion 5D is the smallest. 4. In a comprehensive way, color emulsified asphalt is prepared under the formula of oil and water ratio 62:38, emulsifier 1.4%, modifier 5% and stabilizer 0.2%, and the color emulsion is tested. The performance index of the asphalt material can meet the requirements of JTGF40-2004, but the softening point of the evaporated residue is 55 degrees C, lower than 57 degrees C, and it can not be used as the raw material for the micro surface to be used in the hot areas in the south. It should be reloaded on the Road and fill the rut. The corresponding measures should be taken to make the color emulsification combined with the actual conditions of high perennial temperature in Chongqing. The performance of the asphalt was improved and applied to the engineering. In addition, a test method of color emulsified asphalt mixture was put forward by testing the mixing order of the adding material of the mixture, the method of compaction and the condition of health, and the design method of the mixture ratio was determined. The test of the mixture and the low temperature bending test by the rutting test. The adhesive test and freezing thawing splitting test were carried out to study the high temperature stability, low temperature stability and water stability of the color emulsified asphalt mixture with different epoxy resin content, and the change law of the performance of the mixture was obtained.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U414

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