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The Influence of Water Absorption Increment on Infrared Radiation Characteristics of Rammed Earth

  • Zhang Fang
  • Liu Wenfang
  • Wang Zhuo
  • Fu Yingyu
  • Wang Shiyu
  • Liu Runqi
  • He Manchao
Conference paper

Abstract

Targeting for the description of water occurrence status in the rammed earth of Mogao Grottoes, the infrared thermography was applied to study the relationship between water absorption increment and infrared radiation temperature at various water absorption stages. The result showed that (1) before the infiltrating of all rock samples, and due to the impact of the increasing volume of water passing, the overall relationship between the water absorption increment of unit mass of dry rocks and the infrared radiation temperature was positive, but no obvious regular difference existed in various water absorption stages; (2) by making use of the characteristic that NMI of adjacent thermal images was 0, the moment when water in rammed earth turned from partial infiltration to complete infiltration could be judged; (3) by making use of the characteristic that NMI of adjacent thermal images was 0, the moment when rammed earth turned from unsaturation to complete saturation could be judged. A non-destructive, convenient and real-time method was expected to be provided for the judgment of water occurrence conditions in rammed earth of Mogao Grottoes.

Keywords

Water occurrence conditions Water absorption increment Infrared radiation characteristics Mutual information 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation for Young Scientists of China [Grant Nos. 51604276 and 41502323].

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Zhang Fang
    • 1
    • 2
  • Liu Wenfang
    • 1
    • 2
  • Wang Zhuo
    • 3
    • 4
  • Fu Yingyu
    • 2
  • Wang Shiyu
    • 2
  • Liu Runqi
    • 2
  • He Manchao
    • 1
  1. 1.State Key Laboratory for GeoMechanics and Deep Underground EngineeringBeijingChina
  2. 2.School of Mechanics and Civil EngineeringChina University of Mining and Technology (Beijing)XuzhouChina
  3. 3.Chinese Society for Rock Mechanics and EngineeringBeijingChina
  4. 4.Beijing Zhongke Force Blasting Technology Co., LTD.BeijingChina

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