二苯酮-4改性LDHs对沥青混合料抗老化性能影响研究
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摘要
采用二苯酮-4对LDHs进行有机插层改性,研究二苯酮-4有机插层改性LDHs(BI-LDHs)对沥青混合料抗老化性能的影响.拟定质量分数为3%和5%两个BI-LDHs掺量,分别采用沥青混合料加速老化试验和室内紫外老化模拟试验对AC-13和AC-20两种沥青混合料进行短期热氧老化和紫外老化,采用控制应变的疲劳试验,对老化前后沥青混合料的疲劳寿命和疲劳极限进行研究.结果表明,老化前,BI-LDHs使得沥青混合料疲劳寿命有所降低;老化后沥青混合料的疲劳寿命均减小,但老化后BI-LDHs改性沥青混合料的疲劳寿命反而大于未添加改性剂沥青混合料,表明BILDHs能够延缓老化过程,显著提高沥青混合料的抗老化性能.
The benzophenone-4 was adopted to the organic-intercalated modification of LDHs to investigate the effect of the BI-LDHs on the anti-aging properties of the asphalt mixture.Two dosages of BILDHs(3% and 5%)were set up,and the accelerated aging test and indoor ultraviolet aging tests were conducted to simulate the short-term thermo-oxiditive aging and ultraviolet aging of two kinds of asphalt mixtures(AC-13 and AC-20)respectively.Then the control strain fatigue test was used to test the fatigue life and fatigue limit of asphalt mixture before and after aging.The results show that,before aging,the fatigue life of asphalt mixtures decrease with the addition of BI-LDHs;after aging,the fatigue life of all asphalt mixtures dereases,but the fatigue life of BI-LDHs modified asphalt mixtures is higher than that of asphalt mixtures without BI-LDHs,which indicates that BI-LDHs can delay the aging process and enhances the anti-aging performance of asphalt mixtures obviously.
The benzophenone-4 was adopted to the organic-intercalated modification of LDHs to investigate the effect of the BI-LDHs on the anti-aging properties of the asphalt mixture.Two dosages of BILDHs(3% and 5%)were set up,and the accelerated aging test and indoor ultraviolet aging tests were conducted to simulate the short-term thermo-oxiditive aging and ultraviolet aging of two kinds of asphalt mixtures(AC-13 and AC-20)respectively.Then the control strain fatigue test was used to test the fatigue life and fatigue limit of asphalt mixture before and after aging.The results show that,before aging,the fatigue life of asphalt mixtures decrease with the addition of BI-LDHs;after aging,the fatigue life of all asphalt mixtures dereases,but the fatigue life of BI-LDHs modified asphalt mixtures is higher than that of asphalt mixtures without BI-LDHs,which indicates that BI-LDHs can delay the aging process and enhances the anti-aging performance of asphalt mixtures obviously.
引文
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[13]孔婷婷,董羿蘩,张颖萍,等.类水滑石Ti/Li/AlLDHs的制备及其CO2吸附性能[J].燃料化学学报,2016,44(8):1017-1024.
[14]王卫伟,许英伟,杜健,等.Fe3O4/LDHs复合结构的制备及吸附性能研究[J].人工晶体学报,2015,44(1):204-209.
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[16]刘红瑛,张铭铭,黄凌辉等.多聚磷酸复合SBS改性沥青流变性能及抗老化特性[J].东南大学学报(自然科学版),2016,46(6):1290-1295.
[2]PAN T.Coniferyl-alcohol lignin as a bio-antioxidant for petroleum asphalt:aquantum chemistry based atomistic study[J].Fuel,2013(3):454-466.
[3]WANG Z J,WANG R,WANG Q,et al.Study of mastic-aggregate interfacial adhesion in cement emulsified asphalt mixture based on the Discrete Element Method(DEM)[J].Advanced Materials Research,2012(2):367-370.
[4]AN Q,LI L,LU D,et al.A functional polysiloxane with benzophenone derivative ultraviolet absorbing side groups:Synthesis,morphology,and its performance on fabrics[J].Journal of Applied Polymer Science,2007,104(1):680-687.
[5]刘东亮,王龙,范璐璐.废旧橡胶颗粒界面处理及对水泥混凝土路用性能的影响[J].公路,2008(10):176-181.
[6]叶乾路.乳化沥青混合料冷态修补技术研究[D].南京:东南大学,2004.
[7]李元元,李闯民,刘安.耦联剂-水泥乳化沥青混合料的成型方法及抗压强度研究[J].武汉理工大学学报(交通科学与工程版),2015,39(6):1215-1220.
[8]交通部公路科学研究所.公路沥青路面施工技术规范:JTG F40-2004[S].北京:人民交通出版社,2004.
[9]MANDAPAKA V,BASHEER I,SAHASI K,et al.Application of four-point bending beam fatigue test for the design and construction of a long-life asphalt concrete rehabilitation project in Northern California[J].Semiconductor Laser Theory,2015(1):51-56.
[10]LUNDSTROM R,DI BENEDETTO H,ISACSSON U.Influence of asphalt mixture stiffness on fatigue failure[J].Journal of Materials in Civil Engineering,2004,16(6):516-525.
[11]朱洪洲,高爽,唐伯明.沥青混合料常应变小梁弯曲疲劳试验[J].华中科技大学学报(城市科学版),2009(1):5-9.
[12]PROWELL B D,BROWN E,ANDERSON R M,et al.Validating the fatigue endurance limit for hot mix asphalt[M].Washington D.C:Transportation Research Board,2010.
[13]孔婷婷,董羿蘩,张颖萍,等.类水滑石Ti/Li/AlLDHs的制备及其CO2吸附性能[J].燃料化学学报,2016,44(8):1017-1024.
[14]王卫伟,许英伟,杜健,等.Fe3O4/LDHs复合结构的制备及吸附性能研究[J].人工晶体学报,2015,44(1):204-209.
[15]周吓星,陈礼辉.抗老化剂改善竹粉/聚丙烯发泡复合材料的自然老化性能[J].农业工程学报,2015(12):301-307.
[16]刘红瑛,张铭铭,黄凌辉等.多聚磷酸复合SBS改性沥青流变性能及抗老化特性[J].东南大学学报(自然科学版),2016,46(6):1290-1295.
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