【摘要】：隨著我國(guó)交通事業(yè)的發(fā)展，我國(guó)的公路網(wǎng)建設(shè)逐漸趨于完善。對(duì)已建成的瀝青路面高速公路的養(yǎng)護(hù)與病害防治工作也引起了廣泛的關(guān)注。作為一種良好的預(yù)防性養(yǎng)護(hù)措施，微表處技術(shù)在國(guó)內(nèi)外的應(yīng)用也日益廣泛。 首先，本文分析了改性乳化瀝青的乳化機(jī)理、儲(chǔ)存穩(wěn)定性機(jī)理以及破乳機(jī)理。然后通過室內(nèi)試驗(yàn)，總結(jié)了在制備陽離子改性乳化瀝青的過程中，基質(zhì)瀝青、乳化劑劑量、改性劑劑量、剪切時(shí)間以及穩(wěn)定劑等因素對(duì)改性乳化瀝青的制備過程、技術(shù)參數(shù)以及儲(chǔ)存穩(wěn)定性等的影響。 其次，通過X-熒光光譜分析及電滲儀分別分析了石灰?guī)r、玄武巖及花崗巖三種集料的主要化學(xué)成分及表面ζ電位。結(jié)果表明石灰?guī)r的主要化學(xué)成分是碳酸鈣，而玄武巖和花崗巖中的二氧化硅含量分別為55.851%及86.74%；在水環(huán)境條件下，石灰?guī)r集料表面帶有一定的正電荷，而玄武巖和花崗巖集料表面帶有一定的負(fù)電荷，三種集料的表面ζ電位分別為+11.32mV、-9.87mV以及-29.75mV。然后結(jié)合電荷理論及化學(xué)反應(yīng)理論，分析了三種集料的細(xì)集料分別與陽離子改性乳化瀝青拌和后，集料膠漿粘度變化趨勢(shì)受集料巖性、表面電荷特性及比表面積等因素的影響而存在的差異。 再次，利用龔帕斯模型公式研究了集料膠漿的粘度變化規(guī)律，比較了龔帕斯模型公式的計(jì)算值與實(shí)測(cè)值之間的差異，結(jié)果表明龔帕斯模型公式計(jì)算值誤差率的極大值均未超過20%，從而驗(yàn)證了龔帕斯模型公式在擬合集料膠漿粘度變化規(guī)律方面的可行性。然后根據(jù)龔帕斯模型公式提出了判定膠漿中改性乳化瀝青完全破乳的評(píng)價(jià)指標(biāo)（t），，并討論了（t）的取值范圍以及集料特性對(duì)（t）取值的影響。 最后，分別測(cè)定了石灰?guī)r、玄武巖以及花崗巖等三種微表處混合料的各種技術(shù)性能指標(biāo)。分析了三種微表處混合料的可拌和時(shí)間、粘聚力值、濕輪磨耗值以及負(fù)荷車輪粘砂量等指標(biāo)之間存在的差異。為以后的微表處路面施工提供了一定的參考及指導(dǎo)作用。
[Abstract]:With the development of transportation in our country, the construction of highway network in our country tends to be perfect gradually. The maintenance and disease prevention of asphalt pavement expressway have also attracted extensive attention. As a good preventive maintenance measure, micro-surface technology is widely used at home and abroad. Firstly, the emulsification mechanism, storage stability mechanism and demulsification mechanism of modified emulsified asphalt are analyzed in this paper. Then, through laboratory tests, the preparation process of modified emulsified asphalt was summarized by matrix asphalt, emulsifier dose, modifier dose, shear time and stabilizer in the process of preparing cationic modified emulsified asphalt. The influence of technical parameters and storage stability. Secondly, the main chemical components and surface Zeta potential of limestone, basalt and granite were analyzed by X-fluorescence spectroscopy and electroosmosis instrument, respectively. The results show that the main chemical composition of limestone is calcium carbonate, while the content of silicon dioxide in basalt and granite is 55851% and 86.74%, respectively. Under the condition of water environment, the limestone aggregate surface has a certain positive charge, while the basalt and granite aggregate surface has a certain negative charge. The surface Zeta potentials of the three aggregates are 11.32 MV, 9.87 MV and-29.75 MV, respectively. Then, combined with charge theory and chemical reaction theory, it is analyzed that after the fine aggregate of three kinds of aggregate is mixed with cationic modified emulsified asphalt, the viscosity change trend of aggregate slurry is affected by aggregate lithology. There are differences in surface charge characteristics and specific surface area. Thirdly, the viscosity variation law of aggregate mortar is studied by using Gompas model formula, and the difference between the calculated value and the measured value of Gompas model formula is compared. The results show that the maximum error rate of the calculated value error rate of Gompas model formula is not more than 20%, which verifies the feasibility of Gompas model formula in fitting the viscosity change law of aggregate slurry. Then, according to the Gompas model formula, the evaluation index (t), for judging the complete demulsification of modified emulsified asphalt in mortar is put forward, and the range of (t) and the influence of aggregate characteristics on the value of (t) are discussed. Finally, the technical performance indexes of limestone, basalt and granite were measured respectively. The differences among the mixing time, cohesion value, wet wheel wear value and load wheel sand adhesion of the three kinds of micro-surface mixtures are analyzed. It provides a certain reference and guidance for the construction of micro-surface pavement in the future.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U414

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