本文選題：道路工程　切入點：環(huán)氧樹脂復(fù)合調(diào)溫劑　出處：《長安大學(xué)》2017年碩士論文

【摘要】：瀝青混合料的路用性能受環(huán)境溫度影響較為顯著,高、低溫環(huán)境下的車轍、開裂等與溫度相關(guān)的路面病害嚴(yán)重影響了瀝青路面的使用性能和服務(wù)壽命。項目組前期研究研制的公路用微膠囊型相變調(diào)溫劑可以利用其相變潛熱特性降低瀝青混合料的溫度敏感性,但微膠囊相變調(diào)溫劑在瀝青混合料的高溫拌和階段滲漏揮發(fā)嚴(yán)重,明顯降低了其調(diào)溫效果,因而采用環(huán)氧樹脂對微膠囊相變調(diào)溫劑進行封裝,并利用自行研發(fā)的小試設(shè)備提高了環(huán)氧樹脂復(fù)合調(diào)溫劑的生產(chǎn)效率與成品質(zhì)量,較好地解決了滲漏損失問題。本研究在此基礎(chǔ)上對環(huán)氧樹脂復(fù)合調(diào)溫劑摻入瀝青混合料的實際調(diào)溫效果和摻復(fù)合調(diào)溫劑瀝青混合料的比熱容開展試驗研究,以期為進一步路面溫度場研究和工程應(yīng)用奠定基礎(chǔ)。本研究在環(huán)氧樹脂復(fù)合調(diào)溫劑小試設(shè)備制備工藝的基礎(chǔ)上,利用小試設(shè)備生產(chǎn)的復(fù)合調(diào)溫劑制作了不同摻量的瀝青混合料試件,通過降溫模擬試驗,觀測與分析不同摻量調(diào)溫劑瀝青混合料在降溫過程中的溫度變化情況,采用降溫過程中摻與未摻復(fù)合調(diào)溫劑瀝青混合料之間的最大溫差以及復(fù)合調(diào)溫劑的潛熱積溫值和潛熱調(diào)溫指數(shù)分析環(huán)氧樹脂復(fù)合調(diào)溫劑的實際調(diào)溫效果,發(fā)現(xiàn)在相同的低溫環(huán)境下,摻與未摻復(fù)合調(diào)溫劑瀝青混合料的溫度變化出現(xiàn)了明顯差異,復(fù)合調(diào)溫劑的摻量越大,瀝青混合料的降溫速率越小,與未摻瀝青混合料的溫差越大;調(diào)溫劑的潛熱積溫值和潛熱調(diào)溫指數(shù)越大,發(fā)揮調(diào)溫作用的速率越快,調(diào)溫能力越強。在傳統(tǒng)小容量比熱容測試方法的基礎(chǔ)上,從控制換熱系統(tǒng)熱量散失和保溫效果的角度出發(fā),通過比熱容試驗對不同摻量復(fù)合調(diào)溫劑瀝青混合料的比熱容進行了測試分析,研究發(fā)現(xiàn)摻復(fù)合調(diào)溫劑瀝青混合料的比熱容在復(fù)合調(diào)溫劑的相變溫度范圍內(nèi)會出現(xiàn)明顯的峰值,峰值的大小與復(fù)合調(diào)溫劑的摻量有關(guān);最后通過統(tǒng)計回歸分析,得出了復(fù)合調(diào)溫劑瀝青混合料的比熱容—溫度關(guān)系式。
[Abstract]:The pavement performance of asphalt mixture is significantly affected by ambient temperature. Cracking and other temperature-related pavement diseases have seriously affected the performance and service life of asphalt pavement. The microencapsulated phase change thermostats developed by the project team in the early stage of the project can be used to reduce the asphalt by using the latent heat characteristics of the phase change. The temperature sensitivity of the mixture, However, the microencapsulated phase change thermostats are seeping and volatilizing seriously in the high temperature mixing stage of asphalt mixture, which obviously reduces the effect of temperature regulation. Therefore, epoxy resin is used to encapsulate the microencapsulated phase change thermostats. The production efficiency and the finished product quality of the epoxy resin compound thermostat were improved by using the small scale test equipment developed by ourselves. The problem of leakage loss is well solved. On the basis of this, the actual temperature regulating effect of epoxy resin compound thermostat mixed with asphalt mixture and the specific heat capacity of asphalt mixture mixed with compound temperature-regulating agent are studied experimentally. In order to lay a foundation for further research and engineering application of pavement temperature field. The bituminous mixture samples with different contents were made by using the compound temperature-adjusting agent produced by the small scale test equipment. The temperature change of the asphalt mixture with different contents was observed and analyzed in the process of cooling through the simulation test of cooling down. Using the maximum temperature difference between the asphalt mixture and the mixture, the latent heat accumulated temperature value and the latent heat regulating index of the compound thermostat, the actual temperature control effect of the epoxy resin compound thermostat was analyzed. It is found that under the same low temperature environment, the temperature variation of asphalt mixture mixed with and without compound temperature adjuster appears obvious difference. The bigger the content of compound temperature regulator is, the smaller the cooling rate of asphalt mixture is, and the greater the temperature difference between asphalt mixture and unmixed asphalt mixture is. The larger the latent heat accumulated temperature value and the latent heat regulating index of the thermostat, the faster the temperature regulation rate is and the stronger the temperature regulation ability is. On the basis of the traditional measurement method of specific heat capacity of small capacity, From the point of view of controlling heat loss and heat preservation effect of heat transfer system, the specific heat capacity of asphalt mixture with different contents of compound temperature adjuster was tested and analyzed by specific heat capacity test. It is found that the specific heat capacity of asphalt mixture mixed with compound temperature-regulating agent will appear obvious peak value in the range of phase change temperature of compound temperature-regulating agent, and the magnitude of peak value is related to the content of compound thermostat. Finally, through statistical regression analysis, The relationship between specific heat capacity and temperature of asphalt mixture with compound thermostat is obtained.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U414

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