湿度与温度对无核密度仪测值的影响性分析  

Effect of Humidity and Temperature on Nonnuclear Density Gauge Readings

作　　者：倪宏革[1] 于清[1] 高艳龙[2] 徐静 

机构地区：[1]鲁东大学土木工程学院岩土工程重点实验室,山东烟台264025 [2]四川省交通运输厅公路水运质监站,四川成都610041 [3]重庆岩土工程检测中心,重庆401147

出　　处：《交通标准化》2011年第17期105-108,共4页Communications Standardization

基　　金：山东省高等学校科技计划项目(J06F51)

摘　　要：无核密度仪(PQI301)是一种高效、实时、无损、无辐射地测定沥青路面压实度(密度)的新型检测手段,其测定结果的精准度与沥青路面的湿度、温度有关。通过分析无核密度仪(PQI301)检测方法的基本原理,依据三项现场试验得到不同路面温度、湿度下的密度测值,经过数据对比、回归分析,得到湿度、温度对无核密度仪(PQI301)测定结果的影响关系:路面湿度对测定结果的影响较为显著,路面湿度较大时,压实度(密度)测值偏大;在正常压实温度范围内,路面温度对测定结果的影响不明显。在此基础上,进一步提出应用无核密度仪(PQI301)进行现场检测的操作建议及注意事项。Nonnuclear density gauge（PQI301） is a new instrument for effective,real-time,nondestructive,and nonradioactive test of asphalt pavement compaction degree（density）.The accuracy and precision of the gauge is affected by humidity and temperature of asphalt pavement.Based on the operation principle of PQI301,three field tests are conducted to obtain density values under different surface humidity and temperature conditions.By data comparison and regression analysis,the results indicate that density values are significantly sensitive to surface humidity and higher humidity level means higher PQI readings.For normal rolling temperature range,the correlation between PQI301 output and temperature changes is poor.In light of the above studies,several specific procedures and points deserving attention are recommended when using nonnuclear density gauge（PQI301） to me-asure density in the field.

关 键 词：无核密度仪 温度 湿度 沥青路面 压实度 密度 

分 类 号：U416.03[交通运输工程—道路与铁道工程]