本文選題：瀝青混合料　切入點：抗壓回彈模量　出處：《長安大學(xué)》2014年碩士論文

【摘要】：瀝青混合料的高、低溫性能與其靜態(tài)模量聯(lián)系密切，目前出現(xiàn)了許多外加劑對瀝青混合料的高溫、低溫性能進行改善，但在外加劑與瀝青混合料模量相關(guān)關(guān)系方面還缺乏系統(tǒng)的研究。另外，瀝青路面在實際工作中經(jīng)受車輛荷載、氣候、水文等條件的反復(fù)作用，而現(xiàn)行的靜態(tài)設(shè)計方法并不能準確體現(xiàn)瀝青混合料真實的受力狀況，在力學(xué)模型以及材料參數(shù)方面都與實際狀況有所差別，在一定程度上限制了路面結(jié)構(gòu)設(shè)計的發(fā)展。而從目前來看，采用動態(tài)參數(shù)能對這一狀況有所改善，所以路面結(jié)構(gòu)設(shè)計向動態(tài)方法的發(fā)展將是合理的趨勢，從這一方面來說對瀝青混合料的動態(tài)模量進行系統(tǒng)的試驗研究是很有必要和有意義的。 本文首先對添加抗車轍劑、新型橡維聯(lián)、PR.M三種不同外加劑的瀝青混合料進行了不同溫度區(qū)段的抗壓回彈模量試驗，分析了靜態(tài)模量及回彈變形隨溫度的變化規(guī)律，以及三種外加劑在不同溫度區(qū)段對靜態(tài)模量的改善效果，以確定不同瀝青混合料在不同溫度地區(qū)的適用性。 其次，對幾種瀝青混合料進行了不同試驗溫度、加載頻率下的動態(tài)模量試驗，，分析了溫度、頻率、外加劑等因素對動態(tài)模量及相位角的影響規(guī)律，并結(jié)合靜態(tài)模量試驗結(jié)果利用SPSS軟件進行了不同試驗溫度、加載頻率時的動、靜態(tài)模量相關(guān)性回歸分析，得到不同瀝青混合料的動態(tài)模量回歸公式，可根據(jù)靜態(tài)模量近似計算不同試驗條件下的動態(tài)模量。 再次，對幾種瀝青混合料進行了路用性能試驗，并結(jié)合動、靜態(tài)模量的試驗結(jié)果，驗證瀝青混合料路用性能與模量之間的相關(guān)性。 最后，進行了不同溫度下的單軸靜載蠕變試驗，分析幾種外加劑對瀝青混合料粘彈性以及蠕變勁度模量的影響。
[Abstract]:Asphalt mixture of high, low temperature performance and static modulus of close contact, there are many additives on the asphalt mixture at high temperature, low temperature performance is improved, but also the lack of systematic research in admixture with asphalt mixture modulus relationship. In addition, the asphalt pavement under vehicle load, in the actual work climate, repeated action the hydrological conditions, while the static design method can not accurately reflect the current and actual stress condition of asphalt mixture, the mechanical model and the material parameters and the actual situation is different, to a certain extent, restrict the development of pavement structure design. From the current point of view, the dynamic parameters can be improved on this a condition, so the pavement structure design to the development of the dynamic method is reasonable, systematic test of the dynamic modulus of asphalt mixture in this respect It is necessary and meaningful to study the study.
Firstly, adding anti rutting agent, new oak dimension, the compressive modulus test of different temperature zones PR.M three different admixtures of asphalt mixture, the static modulus and rebound deformation with temperature variation were analyzed, and three kinds of additives in different temperature section of the static modulus effect, to determine the application in the different temperature regions of different asphalt mixture.
Secondly, on several kinds of asphalt mixture under different test temperature, loading frequency under dynamic modulus test, analysis of temperature, frequency, influence of additives and other factors on the dynamic modulus and phase angle, and combining the static modulus test results by using SPSS software for different test temperature, loading frequency of dynamic and static modulus correlation and regression analysis, the dynamic modulus of asphalt mixture can be obtained according to the regression equation, the static modulus of approximate calculation of dynamic modulus under different test conditions.
Thirdly, road performance tests of several asphalt mixtures were carried out, and the correlation between road performance and modulus of asphalt mixture was verified by combining test results of dynamic and static modulus.
Finally, the static uniaxial creep test under different temperature, analysis of several additives on asphalt mixture viscoelastic and creep stiffness modulus.

【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】：2014
【分類號】：U414

【參考文獻】

相關(guān)期刊論文 前2條

1 曾勝,吳

本文編號：1656372