本文關鍵詞：基于切-拉拔試驗的瀝青路面層間黏結性能研究　出處：《長安大學學報(自然科學版)》2017年03期 　論文類型：期刊論文

  更多相關文章： 道路工程 瀝青路面 拉拔試驗 層間界面 黏結強度 水平推力

【摘要】：為研究瀝青路面在車輛荷載作用下的層間黏結特性,采用自主研發(fā)的能施加水平推力的切-拉拔裝置進行層間黏結試驗。通過正交試驗,測試了不同溫度、水平推力和黏層油用量等條件下瀝青混合料復合試件的層間黏結強度,分析了各因素對黏結強度的影響規(guī)律,并通過敏感性分析確定了各因素的影響程度;采用多元非線性回歸方法和SPSS統(tǒng)計軟件,分析了層間黏結強度與溫度、水平推力和黏層油用量的關系,構建了低溫、常溫、高溫3種溫度下瀝青路面在切-拉拔力綜合作用下的層間黏結模型,并驗證了該模型的可行性。研究結果表明:水平推力削弱了層間黏結整體性能,層間黏結強度降低,當黏層油用量為0.8kg/m2時,水平推力由0 MPa增至0.2 MPa,其黏結強度降至原有的1/3;隨著水平推力的增加,層間黏結強度隨黏層油用量的增加呈先增后減趨勢,但影響程度逐漸減弱,最大黏結強度所對應的合理黏層油用量為0.8~1.0kg/m2;隨著溫度的升高,層間黏結強度迅速降低,溫度越高,水平推力對層間黏結強度的影響幅度越大,當溫度為50℃、水平推力為0.2MPa時,層間黏結強度降為0MPa;不同溫度區(qū)間層間黏結強度下降趨勢不同,低溫最快、常溫變緩、高溫最慢;各因素對層間黏結強度影響大小的順序為溫度、水平推力、黏層油用量。
[Abstract]:For the loads in the vehicle interlaminar bond characteristic of asphalt pavement, interlayer bonding test using self-developed applied horizontal thrust cutting drawing device. Through orthogonal test, the temperature, the bonding strength of composite specimens between layers of asphalt mixture thrust and the sticky layer under the condition of oil consumption analysis, the effect of each factor on the bond strength, and to determine the degree of influence of various factors through sensitivity analysis; using multiple nonlinear regression method and SPSS statistical software, analyzed the interlayer bonding strength and temperature, horizontal thrust force and the relationship between the sticky layer of the oil consumption, construction of low temperature, high temperature at room temperature, 3 temperature under the asphalt pavement in cutting - drawing force under the effect of interlayer bonding model, and verify the feasibility of the model. The results show that: the horizontal thrust weakened the overall bond performance between layers, interlayer bonding strength reduction Low viscosity oil layer when the dosage of 0.8kg/m2, the level of thrust from 0 MPa to 0.2 MPa, the bond strength to the original 1/3; with the increase of horizontal thrust, bond strength between layers was increased at first and then decreased with the increase of the amount of oil viscosity, but the influence is weakened gradually, corresponding to the maximum bond strength a reasonable amount of 0.8~1.0kg/m2 viscous oil layer; with the increase of temperature, the bonding strength between layers decreased rapidly, the higher the temperature, the horizontal thrust effect on the bond strength between layers of the amplitude is larger, when the temperature is 50 DEG C, the horizontal thrust is 0.2MPa, the interlayer bonding strength is reduced to 0MPa; the bond strength between layers in different temperature range the drop trend of low temperature, the fastest, most slow slow at room temperature, high temperature; the factors of interlayer bonding strength affects the size of the order of temperature, horizontal thrust, sticky layer of oil consumption.

【作者單位】： 西南交通大學土木工程學院;西南交通大學道路工程四川省重點實驗室;沙希德.錢倫大學土木工程系;
【基金】：國家自然科學基金項目(51378438) 中央高�；究蒲袠I(yè)務費專項資金項目(SWJTU12ZT05)
【分類號】：U416.217
【正文快照】： 0引言瀝青路面是一種由不同結構層組成的多層體系結構,其力學性能不僅與材料性能有關,還與層間的黏結性能有關。層間黏結不足會導致路面層的滑動或完全分離,會進一步使路面產生裂縫、剝離與坑洞等病害[1]。針對瀝青路面層間黏結問題,大量學者采用不同試驗方法進行了系列研究。，

本文編號：1408985