、TLA對(duì)SBS改性瀝青及其混合料性能的影響，確定最優(yōu)組合方案，通過(guò)針入度、軟化點(diǎn)、延度、黏度、剪切流變及彎曲流變等試驗(yàn)，研究復(fù)合改性瀝青的常規(guī)性能及高低溫流變性能，并對(duì)復(fù)合改性瀝青混合料的路用性能進(jìn)行評(píng)價(jià)分析。結(jié)果表明：TLA或納米 <img src="/qkimages/b348/b348202405/b34820240522-3-l.jpg" with="30px" style="vertical-align: middle;"> 摻入后會(huì)降低SBS改性瀝青針入度和延度，提高軟化點(diǎn)和黏度，其中TLA影響較大，且TLA摻量不宜大于 25% ；納米 <img src="/qkimages/b348/b348202405/b34820240522-3-l.jpg" with="30px" style="vertical-align: middle;"> 可提高瀝青膠結(jié)料的高溫抗剪切變形能力，但同時(shí)降低瀝青膠結(jié)料低溫流變性能，其摻量不宜超過(guò) 2% ；TLA和納米 <img src="/qkimages/b348/b348202405/b34820240522-3-l.jpg" with="30px" style="vertical-align: middle;"> 在提高瀝青混合料抗高溫車轍能力和抗水損害性能方面效果顯著，但同時(shí)TLA會(huì)明顯降低其低溫性能，納米 <img src="/qkimages/b348/b348202405/b34820240522-3-l.jpg" with="30px" style="vertical-align: middle;"> 影響很小?？紤]綜合性能推薦 2% 納米 <img src="/qkimages/b348/b348202405/b34820240522-3-l.jpg" with="30px" style="vertical-align: middle;"> 、 25% 的TLA的組合為最優(yōu)方案。-龍?jiān)雌诳W(wǎng)" />

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納米TiO2/TLA復(fù)合改性瀝青及混合料性能研究

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LIU Hai

（Henan Jiaotou Zhengping Highway Co.，Ltd.， Zhengzhou 45OOOO，China）

Abstract： In order to study the effect of nano and TLA on the performance of SBS modified asphalt and its mixture，and determinetheoptimalcombinationscheme，theconventionalperformanceandhighandlowtemperaturerheologicalpropertiesof composite modifiedasphalt were studiedbyusing penetration，softening point，ductility，viscosity，shearheologyandbending rheology tests，andtheroad performanceofcompositemodifiedasphalt mixture was evaluatedandanalyzed.Theresults show that the incorporation of TLA or nano - will reduce the penetration and ductility of SBS modified asphalt，and increase the softeningpoint and viscosity．Among them，TLA has agreatinfluence，andthe contentof TLA should not be more than 25% ： Nano-TiOcanimprovethe high temperature shear deformationresistance of asphaltbinder，but atthe same timereduce the low temperature rheological properties of asphalt binder，and its content should not exceed 2% ．TLA andnano - TiO2 have significantefectsonimproving thehightemperaturerutingresistanceandwaterdamageresistanceofaspalt mixture，butatthe same time，TLA will significantly reduce its low temperature performance，and nano - TiO has little effect. Considering the comprehensive performance，the combination of 2% nano -TiO and 25% TLA is recommended as the optimal solution.

Keywords ： nano ；lake asphalt（TLA）；SBS modified asphalt；asphalt mixture；road performance

0 引言

目前，高等級(jí)道路大多采用瀝青路面，主要在于瀝青路面具有行車舒適度高、噪音小、通車時(shí)間快和維修簡(jiǎn)單等優(yōu)點(diǎn)，但隨著道路上車流量不斷增長(zhǎng)和重載超載車輛的增加，很多瀝青路面在經(jīng)歷第一個(gè)夏季和冬季后便出現(xiàn)了不同程度的車轍、裂縫等病害。（剩余4916字）

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