Detection of ASR in PCC using ultrasonic waves

N. M. Al-Akhras, I. L. Al-Qadi, M. R. Hajj

Research output: Contribution to conferencePaperpeer-review


An experimental study was conducted to detect alkali-silica reaction (ASR) in Portland cement concrete (PCC) using ultrasonic waves (indirect method) at a frequency of 54 kHz. Portland cement concrete prisms, 7.5×10×40 cm, were prepared at two w/c ratios, 0.35 and 0.45. High alkali cement and active silica aggregate were used to produce ASR. Composite strain gages were embedded in the PCC specimens to monitor the ASR deleterious deterioration. Apparent ultrasonic wave velocity and signal energy were used to evaluate PCC specimens. Least significant difference (LSD) statistical test was used to compare the effect of different strain levels resulted from ASR on apparent ultrasonic wave velocity and signal energy. The results show that apparent ultrasonic wave velocity was not sensitive to variations in strain levels up to 0.12%. However, significant reduction in signal energy and variations in the power spectrum were noticed at low strain levels. These results allow to detect ASR at early stages.

Original languageEnglish (US)
Number of pages8
StatePublished - 1996
Externally publishedYes
EventProceedings of the 1996 4th Materials Engineering Conference. Part 2 (of 2) - Washington, DC, USA
Duration: Nov 10 1996Nov 14 1996


OtherProceedings of the 1996 4th Materials Engineering Conference. Part 2 (of 2)
CityWashington, DC, USA

ASJC Scopus subject areas

  • Building and Construction


Dive into the research topics of 'Detection of ASR in PCC using ultrasonic waves'. Together they form a unique fingerprint.

Cite this