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ID:52406176
大小:1.22 MB
页数:5页
时间:2020-03-27
《受阻胺类抗老化剂对沥青混凝土路面性能影响的实验研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第41卷,第6期公路工程Vol.41,No.62016年12月HighwayEngineeringDec.,2016受阻胺类抗老化剂对沥青混凝土路面性能影响的实验研究陈雨(黄冈师范学院,湖北黄冈438000)[摘要]将不同含量受阻胺类抗老化剂GW—944添加到沥青中,研究了GW—944对沥青混凝土路面性能影响。结果表明,随GW—944含量的增加,老化后沥青相位角出现整体下降趋势;老化前沥青相位角则先减小后增大;老化前沥青车辙因子的增加幅度是先增大后减小;GW—944含量为06%时,对老化前后的复合剪切模量影响最大;老化前后沥青抗疲劳
2、性能在一定程度上得到降低。随温度的增加,老化前沥青相位角先增加后减小;老化后沥青相位角在含量为06%时,相位角最大;在沥青含量为06%时,老化前后的沥青抗车辙因子最大;老化前原样沥青提高疲劳性能的作用逐渐减小;老化后沥青对疲劳性能的影响逐渐加大。抗老化剂GW—944添加量对老化前的原样沥青低温性能影响较小,GW—944对老化后10℃下的的沥青延度改善明显,随着GW—944添加量,延度变化幅度先增大后减小,在06%时最大,延度提高了367%。[关键词]混凝土路面;沥青;受阻胺类;抗老化剂[中图分类号]U4141[文献标识码]A
3、[文章编号]1674—0610(2016)06—0245—05ExperimentalStudyonEffectofBlockedAgentonPavementPerformanceofAsphaltConcreteAntiAgingAmineCHENYu(HuangGangNormalUniversity,Huanggang,Hubei438000,China)[Abstract]ThedifferentcontentofhinderedamineantiagingagentGW—944isaddedtotheasphalt,t
4、heeffectsofGW—944ontheperformanceofasphaltconcretepavementTheresultsshowthatwiththeincreaseofGW—944content,asphaltafteragingphaseangleofanoveralltrendofdecline;agingasphaltbeforethephaseangleisdecreasedfirstandthenincreased;agingbeforetherutfactorincreasedfirstincrea
5、sesandthendecreases;whenthecontentofGW—944is06%,thecompositeshearmodulusmaximumeffectbeforeandafteraging;agingasphalttheantifatigueperformanceisdecreasedtosomeextentWiththeincreaseoftemperaturebeforeagingasphaltphaseangleincreasedfirstandthendecreased;asphaltafteragin
6、gphaseanglewhenthecontentis06%,themaximumphaseangle;theasphaltcontentis06%,beforeandafteragingofasphaltantiruttingfactor;agingbeforetheoriginalasphaltimprovedfatigueperformanceeffectwasgraduallydecreased;influenceonfatigueperformanceofasphaltthegraduallyincreaseafte
7、ragingAntiagingagentGW—944contenthaslittleeffectonthelowtemperatureperformanceoforiginalasphaltagingbeforeandafteragingat10GW—944ontheasphaltductilityimprovedsignificantly,withtheadditionofGW—944,theductilityamplitudeincreasesfirstandthendecreases,themaximuminthe06%,t
8、heductilityincreasedby367%[Keywords]concretepavement;asphalt;hinderedamine;antiagingagent[1-3]存在的问题也日益引起关注。由
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