Serge Apedovi Kodjo

TL;DR: In this paper, the authors deal with the application of various test methods for monitoring the progression of alkali-silica reaction (ASR) in laboratory concrete mixtures and report the effectiveness of each method.

TL;DR: In this paper, the applicability of the time-shift technique at different levels of concrete damage and define its advantages, limitations and limitations in order to optimize its use. But this technique is more sensitive when used in an indirect configuration of transmission rather than in a semi-direct configuration.

TL;DR: In this paper, the feasibility and sensitivity of ultrasonic probe waves for characterizing the mechanical damage of reinforced concrete slabs during bending tests either in sound concrete or in concrete affected by alkali-silica reaction (ASR).

TL;DR: In this paper, a nonlinear acoustic technique called Time Shift (TS) was developed for field experiences, which is based on the wave interaction between highfrequency/ low-amplitude probe waves and low-frequency/highamplitudes pump waves generated by an impact, and tested in a laboratory test setup involving three large reinforced concrete slabs in which the damage associated with ASR was monitored over time.

TL;DR: In this article, the effects of temperature changes on the nonlinear acoustic behavior of reinforced concrete using Time Shift method was evaluated. But, the results showed that the non-linear parameter seems to get minimized in low temperatures and the state of medium (i.e. intact or damaged) can alter the sensitivity level of concrete structures to temperature variations.