本文關(guān)鍵詞： 濕熱地區(qū) 多孔排水瀝青混合料 高粘瀝青 瀝青膠漿 路用性能　出處：《福州大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：濕熱地區(qū)氣候高溫多雨,多孔排水改性瀝青技術(shù)的應(yīng)用具有廣泛的應(yīng)用前景。本文重點(diǎn)針對(duì)多孔透水瀝青路面的改性瀝青混合料的路用性能與材料設(shè)計(jì)開(kāi)展了研究。具體包括多孔排水瀝青混合料配合比設(shè)計(jì),多孔排水瀝青混合料路用性能,高粘改性瀝青膠漿特性,高粘改性瀝青性能特性,多孔排水瀝青混合料施工與技術(shù)指標(biāo)研究等,研究結(jié)論如下：空隙率與2.36mm篩孔通過(guò)率呈現(xiàn)良好的正相關(guān),隨著2.36mm篩孔通過(guò)率增加,空隙率逐漸減小。在孔隙率確定的情況下,影響多孔排水瀝青混合料配合比設(shè)計(jì)最敏感的兩個(gè)因素是瀝青類(lèi)型(瀝青技術(shù)指標(biāo))和油石比。連續(xù)空隙率隨混合料的總空隙率增大而增大,兩者基本呈線(xiàn)性關(guān)系。瀝青的品種和含量對(duì)混合料的空隙率影響不大。空隙率越大,石石結(jié)構(gòu)特征越顯著,混合料結(jié)構(gòu)強(qiáng)度下降,剛性增強(qiáng)。不同空隙率多孔瀝青混合料的滲水系數(shù)均超過(guò)900ml/15s要求,滲水系數(shù)與空隙率有明顯的相關(guān)性,空隙率(%)與滲水系數(shù)(ml/15s)近似呈線(xiàn)性關(guān)系�？障堵试龃�,多孔排水瀝青混合料構(gòu)造深度越大,高粘瀝青的使用一定程度降低構(gòu)造深度。多孔狀態(tài)下,構(gòu)造深度可達(dá)130～240(0.01mm),2%的混合料孔隙率改變將導(dǎo)致40(0.01mm)個(gè)構(gòu)造深度的改變。排水瀝青混合料功能的實(shí)現(xiàn)主要取決于級(jí)配的設(shè)計(jì),但空隙率越大混合料骨架的力學(xué)性能越差,排水多孔混合料性能的實(shí)現(xiàn)、耐久性保障和進(jìn)一步提升主要取決于瀝青。瀝青的高粘度是保證骨架結(jié)構(gòu)、防飛散、高溫穩(wěn)定性、水穩(wěn)定性的關(guān)鍵指標(biāo)。高粘改性瀝青的制備,往往導(dǎo)致低溫指標(biāo)、韌度和柔度指標(biāo)的下降,以及135℃施工粘度過(guò)粘,如何確保高粘改性瀝青具有較好的低溫指標(biāo)、韌度和135℃施工和易性,以及較好的抗老化性能,是研發(fā)和挑選高性能高粘改性瀝青的關(guān)鍵。瀝青膠漿的性質(zhì)主要有瀝青性質(zhì)決定,礦粉一方面使瀝青變稠,但膠漿相比瀝青的高溫性能變化不大,但低溫性能下降顯著,這對(duì)于瀝青的研發(fā)和選擇來(lái)看,重視瀝青的低溫指標(biāo)控制十分重要。綜合以上,以及參照國(guó)內(nèi)外的相關(guān)規(guī)范要求,本文給出了濕熱地區(qū)多孔排水瀝青及瀝青混合料的技術(shù)指標(biāo)。建議進(jìn)一步加強(qiáng)高性能改性瀝青的研究,高粘瀝青性能的發(fā)展是未來(lái)多孔排水瀝青混合料性能提升的重要?jiǎng)恿Α?br/>[Abstract]:In humid and hot areas, the climate is hot and rainy. The application of porous drainage modified asphalt technology has a wide application prospect. This paper focuses on the road performance and material design of the modified asphalt mixture of porous permeable asphalt pavement, including porous drainage leachate. Mix ratio design of green mixture. The road performance of porous drainage asphalt mixture, high viscosity modified asphalt slurry, high viscosity modified asphalt performance, porous drainage asphalt mixture construction and technical index research. The results are as follows: there is a good positive correlation between the porosity and the pass rate of 2.36mm sieve hole. With the increase of the pass rate of 2.36mm sieve hole, the porosity decreases gradually. The two most sensitive factors affecting the mix design of porous and drained asphalt mixture are asphalt type (asphalt technical index) and asphalt stone ratio. The continuous void ratio increases with the increase of the total porosity of the mixture. The variety and content of asphalt have little effect on the porosity of mixture. The larger the void ratio, the more obvious the structural characteristics of stone and the decrease of structural strength of mixture. The permeability coefficient of porous asphalt mixture with different porosity is more than 900ml / 15s, and there is obvious correlation between permeability coefficient and porosity. The porosity is approximately linearly related to the permeability coefficient (ml / 15s). The greater the porosity, the greater the structural depth of porous drainage asphalt mixture. The use of high viscosity asphalt reduces the depth of structure to a certain extent. In porous state, the depth of structure can reach 130 ~ 240 ~ 0.01mm). The change of porosity of 2% mixture will lead to the change of 40 ~ 0. 01 mm) structural depth. The realization of function of drainage asphalt mixture mainly depends on the design of gradation. However, the greater the void ratio, the worse the mechanical properties of the mixture, the performance of the porous mixture, durability protection and further improvement mainly depend on the asphalt. The high viscosity of asphalt is to ensure the skeleton structure, anti-flying. The key indexes of high temperature stability and water stability. The preparation of high viscosity modified asphalt often leads to the decrease of low temperature index, toughness and flexibility index, as well as the viscosity overviscosity at 135 鈩，

本文編號(hào)：1475063