High temperature deformation investigation of asphalt mixture with nanosized volcanic ash fillers using optical fiber sensor
作者： Wanqiu Liu , Xu Liu , Zheren Wang , Zhi Zhou
DOI: 10.1016/J.MEASUREMENT.2019.03.075
关键词: Composite material 、 Deformation (engineering) 、 Asphalt concrete 、 Fiber Bragg grating 、 Optical fiber 、 Aggregate (composite) 、 Asphalt 、 Fiber optic sensor 、 Rut 、 Materials science
摘要: Abstract Due to the complexity of asphalt concrete materials and lack reliable test methods, high temperature rutting resistance is difficult be quantitatively expressed. The increasing use modified nontraditional makes it even more complicated. This paper introduces an optical fiber Bragg grating (FBG) based equipment for synchronous 3D strain measurement specimen with resolution. FBG has data sampling frequency (up 300 Hz) large range (10,000 μe). accuracy can reach 1 μe. For repeatability tests in this paper, maximum variances proposed were 1.66% 2%, respectively. Four types nanosized volcanic ash fine fillers have been evaluated through repeated-load plastic deformation using equipment. Through analysis whole process data, proved that shape curve steady cycle independent load magnitude aggregate skeleton. Therefore, used study mechanism generation develop indicators material evaluation quantitatively.
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