简介：EvaluationofhightemperatureperformanceofSBS-modifiedasphaltmixturewaspresented.Bothwheelloadedmethodandcreepmethodwereadoptedfortwodifferentmixturesandtwokindsofspecimenswithdifferentheight,andcorrespondingindicatorsweremeasured.Meanwhile,thecorrelationbetweentheseindicatorswasthoroughlyanalyzedandtwokindsofmixtureswerecompared.TheexperimentalresultsshowthatthereisagoodlinearrelationshipbetweenLWTindicatorsandCTindicatorsforM-13,whilearelativelypoorrelationshipforM-25,especiallythatbetweendynamicstiffnessandstaticstiffnessandthatbetweendynamicstabilityandstaticcreepstiffness.Besides,logarithmicrelationshipbetweenDSandRDhasahigherdeterminationcoefficientthanthatforlinearrelationship.Thus,multi-indexevaluationshouldbetakenforsyntheticallyassessinghightemperatureperformanceofasphaltmixture.

简介：TheagingmechanismofSBSmodifiedasphaltduringitsagingprocesswasstudied.Thecharacterizationsofbaseasphalt,SBSpolymeranditsmodifiedasphaltweredeterminedindifferentagingtimebyFouriertransforminfraredspectrum(FTIR).FTIRshowsthatoxidativedehydrogenationreactionoccursinasphalt,andunsaturatedcarbonbondisgeneratedundershort-termthermalagingcondition.Additionally,SBSpolymerwasagedsignificantlyunderthatcondition,thespeedofwhichwasfasterthanthatofbaseasphalt.TheaginglawsofbothasphaltandSBSpolymerduringtheagingprocessofSBSmodifiedasphaltweresimilartotheiraginglawsrespectively.DuetotheprotectiveeffectbetweenasphaltandSBSpolymer,theagingdegreesofasphaltandSBSpolymerwerelowerthanthoseagedindependently.

简介：凶悍疯狂的T3编辑又出现了。在目光扫过桌子上堆满的各种数码产品之后，一台不幸的奥林巴斯μ720SW数码相机落入了编辑们的魔爪之中。

简介：奥林巴斯μDIGITAL600是一款600万像素的时尚数字相机，它带有2.5英寸液晶屏，采用具备全天侯防护能力的机身，可以有效避免风沙雨滴对相机造成的损害。

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简介：法国Geonaute公司宣布推出360°全向运动摄影机。摄影机顶部设置有3个独立的镜头，每个镜头对应一块800万像素传感器．可提供一个几乎完整的球形视野（水品360°，垂直150°）。为满足户外运动需求。摄影机经过了一定的抗震处理，防水等级达到1PX7（1米水深下可坚持30分钟）。

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