Simulating acoustic nonlinearity change in accelerated mortar bar tests: A discrete meso-scale approach

M. Alnaggar, G. Cusatis, J. Qu, M. Liu

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

3 Scopus citations

Abstract

Alkali silica reaction (ASR) in concrete is a complex, multi-scale chemo-mechanical problem characterized by expansion and cracking of concrete meso-structure resulting in mechanical properties degradation. Currently available standardized tests to investigate concrete vulnerability to ASR (accelerated mortar bar test and concrete prism test) can give some insight for new structures, however, the assessment of residual load carrying capacity of existing ASR affected structures mostly rely on destructive evaluations. Promising alternatives are ultrasonic nondestructive evaluation techniques, but, they don’t provide a direct measurement of the damage characteristics and mechanical properties deterioration. This paper integrates nondestructive measurements with accurate computational modeling of ASR induced damage using the Lattice Discrete Particle Model (LDPM), a mesoscale model for concrete with superior modeling capability of fracturing behavior that was recently extended to account for ASR damage. The numerical simulations demonstrate the ability to replicate ultrasonic nonlinear phenomena and show its strong correlation with cracking evolution.

Original languageEnglish (US)
Title of host publicationLife-Cycle of Structural Systems
Subtitle of host publicationDesign, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
EditorsHitoshi Furuta, Dan M. Frangopol, Mitsuyoshi Akiyama
PublisherCRC Press/Balkema
Pages451-458
Number of pages8
ISBN (Print)9781138001206
DOIs
StatePublished - 2015
Event4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014 - Tokyo, Japan
Duration: Nov 16 2014Nov 19 2014

Publication series

NameLife-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014

Other

Other4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
CountryJapan
CityTokyo
Period11/16/1411/19/14

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

Fingerprint Dive into the research topics of 'Simulating acoustic nonlinearity change in accelerated mortar bar tests: A discrete meso-scale approach'. Together they form a unique fingerprint.

Cite this