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在山西省北部某二级公路埋设ZDR-11型智能温度记录仪,对路面结构温度场进行了为期1年的长期观测。现场监测结果表明:沥青面层具有较好的温度衰减作用,路面结构层中温度随时间的变化主要发生在基层或底基层中部以上;变温速率、温度梯度在路表达到最大值,随着深度的增加,其波幅越来越小;若原有路面结构强度低、裂缝不进行填塞与修补、沥青罩面过薄,则玻纤格栅加筋罩面旧沥青路面起不到防治路面温缩反射裂缝的效果。
ZDR-11 intelligent temperature recorder was embedded in a grade 2 highway in the northern part of Shanxi Province, and a one-year long-term observation of pavement structure temperature field was conducted. The results of on-site monitoring showed that the asphalt surface layer has a good temperature attenuation effect, and the change of temperature in the pavement structure layer over time mainly occurs above the middle layer of the base layer or basement layer. The temperature change rate and the temperature gradient reach the maximum on the road surface, Of the increase, the amplitude is getting smaller and smaller; if the original pavement structure strength is low, the cracks are not filled and repaired, the asphalt cover is too thin, the glass fiber reinforced plastic overlay old asphalt pavement can not prevent the road surface temperature Shrinkage reflection Crack effect.