Monitoring early age properties of cementitious material using ultrasonic guided waves in embedded rebar

Hobgbin Sun, Jinying Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The evaluation of early age properties of concrete is critical for ensuring construction quality. Using ultrasonic guided waves in a rebar for monitoring the early age properties of cementitious material is presented. The longitudinal L(0,1) mode guided wave in rebar is excited by an EMAT sensor and received by a Pwave ultrasonic transducer. Continuous measurements during cement hydration were used to monitor the longitudinal wave attenuation resulted from the leakage from the rebar to the surrounding concrete. The evolution of the shear wave velocity was also measured at the same time. Experiments were performed on four cement paste samples and three mortar samples. The results indicated that mechanical properties can be monitored by ultrasonic guided waves in the rebar.

Original languageEnglish
Title of host publicationStructural Health Monitoring 2015
Subtitle of host publicationSystem Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015
EditorsFu-Kuo Chang, Fotis Kopsaftopoulos
PublisherDEStech Publications
Pages391-398
Number of pages8
ISBN (Electronic)9781605951119
DOIs
StatePublished - 2015
Externally publishedYes
Event10th International Workshop on Structural Health Monitoring: System Reliability for Verification and Implementation, IWSHM 2015 - Stanford, United States
Duration: Sep 1 2015Sep 3 2015

Publication series

NameStructural Health Monitoring 2015: System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015
Volume2

Conference

Conference10th International Workshop on Structural Health Monitoring: System Reliability for Verification and Implementation, IWSHM 2015
Country/TerritoryUnited States
CityStanford
Period09/1/1509/3/15

Keywords

  • Concrete properties
  • Early age
  • Guided wave
  • Longitudinal mode
  • Rebar

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