Evaluating damage potential of cryogenic concrete using acoustic emission sensors and permeability testing

Reginald B. Kogbara, Boback Parsaei, Srinath R. Iyengar, Zachary C. Grasley, Eyad A. Masad, Dan G. Zollinger

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This study evaluates the damage potential of concrete of different mix designs subjected to cryogenic temperatures, using acoustic emission (AE) and permeability testing. The aim is to investigate design methodologies that might be employed to produce concrete that resists damage when cooled to cryogenic temperatures. Such concrete would be suitable for primary containment of liquefied natural gas (LNG) and could replace currently used 9% Ni steel, thereby leading to huge cost savings. In the experiments described, concrete cubes, 150 mm x 150 mm x 150 mm, were cast using four different mix designs. The four mixes employed siliceous river sand as fine aggregate. Moreover, limestone, sandstone, trap rock and lightweight aggregate were individually used as coarse aggregates in the mixes. The concrete samples were then cooled from room temperature (20°C) to cryogenic temperature (-165°C) in a temperature chamber. AE sensors were placed on the concrete cubes during the cryogenic freezing process. The damage potential was evaluated in terms of the growth of damage as determined from AE, as a function of temperature and concrete mixture design. The damage potential observed was validated with water permeability testing. Initial results demonstrate the effects of the coefficient of thermal expansion (CTE) of the aggregates on damage growth. Concrete damage (cracking) resistance generally decreased with increasing coarse aggregate CTE, and was in the order, limestone ≥ trap rock << lightweight aggregate ≥ sandstone. Work is in progress to fully understand thermal dilation and damage growth in concrete due to differential CTE of its components.

Original languageEnglish
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014
PublisherSPIE
ISBN (Print)9780819499875
DOIs
Publication statusPublished - 1 Jan 2014
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014 - San Diego, CA, United States
Duration: 10 Mar 201413 Mar 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9061
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014
CountryUnited States
CitySan Diego, CA
Period10/3/1413/3/14

Keywords

  • Acoustic emission
  • Coefficient of thermal expansion
  • Cracking
  • Cryogenic temperatures
  • LNG storage
  • Water permeability

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Kogbara, R. B., Parsaei, B., Iyengar, S. R., Grasley, Z. C., Masad, E. A., & Zollinger, D. G. (2014). Evaluating damage potential of cryogenic concrete using acoustic emission sensors and permeability testing. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014 [90613B] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9061). SPIE. https://doi.org/10.1117/12.2045708