CAJ | 학술논문

对铺筑于钢桥的浇注式沥青混凝土（Guss）进行钻芯试验，将会造成钢桥桥面损坏及留下侵害的弱面，须以无损检测方法，进行路面质量控制。以电磁波原理应用于无损检测过程中，介电常数为影响电磁波行为的重要参数，研究使用网络分析仪搭配终端开路同轴探棒，量测 Guss 胶浆，粒料，和 Guss 试件的介电常数，以2.55 GHz 频率的介电常数数值探讨孔隙率，密度，以及温度变化对于介电常数的影响。另发展 Guss 沥青混凝土介电混合模型与介电常数预测密度模型，并且使用无核密度仪 PaveTracker 量测 Guss 沥青混凝土密度，并以校正后的PaveTracker 数值与实验室密度加以比较。试验结果显示孔隙率和密度与介电常数呈线性关系，R2约为0.6。在温度量测范围90℃至60℃的降温过程当中，Guss 试件介电常数随温度下降而减少。另由本研究所发展的 Guss 试件介电混合模型，以胶浆，粒料，石粉和空气的介电常数及所占的体积百分比，可推测 Guss 试件的介电常数。并且由所建立的密度预测模型，以 Guss 试件介电常数预测密度，密度预测值与实验室密度的相关性 R2为0.78。最后以校正无核密度仪 PaveTracker 读数，校正后 PaveTracker 读数与实验室密度的相关系数 R2为0.89。
대포축우강교적요주식력청혼응토（Guss）진행찬심시험，장회조성강교교면손배급류하침해적약면，수이무손검측방법，진행로면질량공제。이전자파원리응용우무손검측과정중，개전상수위영향전자파행위적중요삼수，연구사용망락분석의탑배종단개로동축탐봉，량측 Guss 효장，립료，화 Guss 시건적개전상수，이2.55 GHz 빈솔적개전상수수치탐토공극솔，밀도，이급온도변화대우개전상수적영향。령발전 Guss 력청혼응토개전혼합모형여개전상수예측밀도모형，병차사용무핵밀도의 PaveTracker 량측 Guss 력청혼응토밀도，병이교정후적PaveTracker 수치여실험실밀도가이비교。시험결과현시공극솔화밀도여개전상수정선성관계，R2약위0.6。재온도량측범위90℃지60℃적강온과정당중，Guss 시건개전상수수온도하강이감소。령유본연구소발전적 Guss 시건개전혼합모형，이효장，립료，석분화공기적개전상수급소점적체적백분비，가추측 Guss 시건적개전상수。병차유소건립적밀도예측모형，이 Guss 시건개전상수예측밀도，밀도예측치여실험실밀도적상관성 R2위0.78。최후이교정무핵밀도의 PaveTracker 독수，교정후 PaveTracker 독수여실험실밀도적상관계수 R2위0.89。
Pouring type of paving Gangqiao(Guss)asphalt concrete core experiment was carried out,will cause damage of steel bridge deck and left of the weak side,NDT methods,should be related to quality control in pavement.To the electromagnetic principle applied to nondestructive testing process,di-electric constant as the important parameters influencing the electromagnetic wave behavior,this study u-sing network analyzer with terminal open coaxial rod,measuring Guss mucilage,aggregate,and Guss spec-imen of dielectric constant,dielectric constant of 2.55 GHz numerical study porosity,density,and the effects of temperature on dielectric constant.Another development of Guss asphalt concrete density of die-lectric constant and dielectric mixture model prediction model,and using the magnetic density meter PaveTracker density measurement of Guss asphalt concrete,and adjusted the PaveTracker numerical den-sity compared with laboratory.Experimental results show that the porosity and density and dielectric con-stant linear relationship,R2 is about 0.6.In the temperature measurement range of 90 ℃ and 60 ℃ and cooling process of Guss specimen dielectric constants decrease with temperature drop.The other by our in-stitute's development of Guss specimen dielectric hybrid model,mucilage,aggregate,powder and percent-age of dielectric constant and the volume of the air,can be speculated that Guss dielectric constant of the specimens.And established by the density of the forecasting model,to predict the density Guss specimen dielectric constant and density of the correlation of predicted values and the density of laboratory R2 of 0.78.Finally by magnetic density correction instrument PaveTracker readings,adjusted PaveTracker read-ings with lab density correlation coefficient R2 is 0.89.