|Table of Contents|

Real-time temperature field measurement of asphalt pavement based on fiber bragg grating measuring technology(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2014年02期
Page:
1-6,13
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Real-time temperature field measurement of asphalt pavement based on fiber bragg grating measuring technology
Author(s):
DONG Ze-jiao1; 2;  LI Sheng-long1;  WEN Jia-yu1;  LENG Zhen3
1. School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China; 2. Key Laboratory for Road Structure and Material of Ministry of Transport, Chang’an University, Xi’an 710064, Shaanxi, China; 3. Faculty of Construction and Environment, The Hong Kong Polytechnic University, Hong Kong, China
Keywords:
asphalt pavement;  temperature field;  temperature modification;  fiber bragg grating temperature sensor;  temperature sensitivity
PACS:
U416.217
DOI:
-
Abstract:
Based on fiber bragg grating(FBG)measuring technology, the long-term and real-time temperature monitoring system of temperature information for asphalt pavement was established to continuously monitor asphalt pavement temperature. The temperatures of asphalt pavement layers were measured by using high-precision thermocouples to amend the FBG temperature sensors in-site. The FBG temperature sensor was used to monitor the real-time temperature of asphalt pavement. Analysis result shows that the internal pavement temperature reaches the highest value at 2:00-4:00 PM and drops to the lowest value at 4:00-6:00 AM. At 9:00-12:00 AM, the temperature grows fast and at 4:00-6:00 PM it drops fast. With the increase of asphalt pavement depth, the variation extent and rate of internal temperature decrease gradually and correspondingly, the time to reach peaks or troughs has some delays. The internal temperature of asphalt pavement varies with air temperature and keeps the same change trend with season change. The lowest temperature of asphalt pavement in the whole year appears at the beginning of January and grows gradually afterwards. 3 tabs, 13 figs, 14 refs.

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Last Update: 2014-04-30