车辙检测与欧盟标准演示课件

,Asphalt verbindet!,ZuB,!,ZuB,Dr.-Ing.Viktor Root,*,The effects of european standards on asphalttesting in Germany,using the example of,wheel tracking testing,以车辙检测为例,说明德国根据欧盟标准进行沥青混合料测试的效果,2,European standards for asphalt,欧盟沥青混合料标准,since 2009 in Germany,TL Asphalt-StB 07,Implementation,DIN EN 13108,(part 1,5,6,7,20),TP Asphalt-StB 07,Partly implementation DIN,EN 12697(part1-46),ZTV Asphalt-StB 07,Contractual rule for building,warranty claim,billing,德国自,2009,年以来,实施德国欧盟标准,07,道路沥青测试技术,DIN EN 13108(,第,1,5,6,7,20,部分,),部分实施德国欧盟标准,07,道路沥青测试,技术,DIN EN 12697(,第,1 46,部分,),以及,07,道路沥青附加技术条件关于建造、,保修要求以及合约规定,DIN EN Standards for construction materials,欧盟德国建筑材料标准,Initial testing,初始测试,Internal quality control,内部质量控制,External quality control,外部质量控制,Certification,认证,Production,生产,3,European standards for asphalt,欧盟沥青混合料标准,Implementation in,Germany 2009,as,Technische Prfvorschrift fr Asphalt im Straenbau,TP Asphalt-StB,Parts:,1-6,8,11-14,17-20,22-25,27-30,33-36,42,altogether:26 parts.,2009,年德国开始实施道路沥青测试,技术第,1-6,8,11-14,17-20,22-25,27-30,33-36,42,部分,共,26,部分,DIN EN 12697,欧盟德国标准,12697,part 1 to 46,第,1,至第,46,部分,Testing method,测试方法,Hot asphalt mix,热沥青混合料,4,Testing methods for deformation behaviour of asphalt in Germany,德国沥青混合料变形性能试验方法,compression tests,压缩试验,uniaxial cyclic compression,test,单轴循环压缩试验,triaxial testing,三轴压缩试验,wheel tracking,车辙,large scale testing,大尺度试验,wheel tracking tests,车辙试验,6,Implementation EN 12697,parts:35,33 and 22 in Germany,德国实施欧盟标准,EN,12697,第,35,、,33,和,22,部分,EN 12697,part 35 laboratory mixing“,TP Asphalt,part 35,沥青测试技术第,35,部分,“试验室混合料拌和机”,EN 12697,Teil 33 roller sector compactor“,TP Asphalt,part 33,沥青测试技术第,33,部分,“扇形碾压成型机”,EN 12697,Teil 22 wheel tracking“,TP Asphalt,part 22,沥青测试技术第,22,部分,“车辙试验机”,7,TP Asphalt,沥青测试技术,35/2007(EN 12697 35),Making of asphalt mix in the laboratory,试验室制作混合料,Universal laboratory mixer with following,requirements:,通用试验室拌和机需要满足下述要求,homogeneous rearangement,均匀搅拌,heating with temperature control,温控加热,adjustable mixing time,可调搅拌时间,homogeneous allocation of used materials,使用材料均匀配置,non destructive mixing of used materials,非破坏性地搅拌所使用材料,complete coating of used gravel fractions,所使用砾石完全被沥青裹覆,8,TP Asphalt,沥青测试技术,35/2007(EN 12697 35),Making of asphalt mix in the laboratory,试验室制作沥青混合料,Test procedure:,试验步骤,Mixing temperature:,拌和温度,Depending on character and sort of binder,由沥青性质和种类决定,Aggregates and additives:,集料和添加物,Pre-heating in heating chamber(8 h),在加热仓预热（,8,小时）,Binder:,沥青,Pre-heating in heating chamber(3 h),在加热仓预热（,3,小时）,Pre-mixing time aggregates:,集料预拌和时间,Dry-mixing time aggregates/additives 1 min,集料,/,添加物干拌和,1,分钟,Total mixing time:,全部拌和时间,max.3 min.,最多,3,分钟,10,TP Asphalt,沥青测试技术,33/2007(EN 12697 33),Producing of asphalt plates with the sector compactor,使用扇形碾压成型机制作混合料试件,Roller sector compactor:,扇形碾压成型机,heated sector and mould,扇形轧轮和模具能够加热,displacement/force controlled compaction,位移,/,力控碾压,PC-controlled,计算机控制,free programmable compaction,自由编程碾压,heating chamber,balance(,1 g),release paper,thermometer,measuring slide,加热仓、天平（,1,克）、隔离纸、温度计、滑动检测,11,TP Asphalt,沥青测试技术,33/2007(EN 12697 33),Producing of asphalt plates with the sector compactor,使用扇形碾压成型机制作混合料试件,Test procedure,试验步骤,Amount of necessary asphalt mix:,所需混合料数量,Preparation of test:,试验准备,Preheating of asphalt mix in heating chamber(max.3 h),在加热仓预热混合料（最多,3,小时）,Compaction temperature:,碾压温度,Bitumen for roadworks EN 12591,135 C,筑路沥青,EN,12591,135 C,Polymer modified bitumen EN 14023,145 C,聚合改性沥青,EN,14023,145 C,13,TP Asphalt,沥青测试技术,33/2007(EN 12697 33),Producing of asphalt plates with the sector compactor,使用扇形碾压成型机制作沥青混合料试件,Test procedure,试验步骤,:,Course of compaction,碾压过程,:,Precompaction(controlled by displacement),预碾压（通过位移进行控制）,Increase of displacement per crossing up to maxiumum load of,2,6 kN,每次碾压增加置换力最大达,2.6,千牛顿。,Additional crossings when maximum load is reached,当最大荷载达到之后，再增加碾压数,Degree of compaction after precompaction should be between,89 and 91%.,预碾之后，碾压程度应该介于,89%,和,91%,之间,Complete load relieve,荷载完全解除,15,Verification of results,结果检验,:,Determination of sample thickness,确定试件厚度,:,Six measuring points equally distributed on the surface of sample,6,个测量点均匀分布在试件的表面,Average variance within 7,5%,平均差异在,7.5%,以内,Determination of density by volume and calculation of degree of compaction,通过体积以及计算碾压程度确定密度,:,TP Asphalt 06/2007(EN 12697-6),Degree of compaction in relation to bulk density of marshall test specimen,碾压程度与马歇尔试验试件计算密度相关,99101%,Not reaching these demands means that a new sample with modified compaction parameters has to be produced,达不到这些要求说明新的试件必须在修改碾压参数的条件下制作,16,TP Asphalt,沥青测试技术,22/2007(EN 12697 22),Wheel tracking test,车辙试验,Testing method,试验方法,This method is used for the determination of rut,deepness as a characteristic indicator for the,deformation resistance through cyclic action effects.,通过周期运动效果来确定车辙深度作为抗变形性能表现。,During the test two specimen are in contact with a rolling test gear.The specimen are undisplaceable fixed in a steel mould by using gypsum.The rut deepness is plotted against the number of crossings.,检测过程中，,2,个试件与滚轮接触。试件用石膏固定在钢制模具中，不可移动。车辙深