Concrete is a multicomposite material with heterogeneities ranging in size from micrometers
to centimeters. At low frequency (below 50 kHz), ultrasound propagates through concrete …

Recently, self-healing technologies have emerged as a promising approach to extend the
service life of social infrastructure in the field of concrete construction. However, current …

In this paper the compressive strength of a wide range of structural lightweight aggregate
concrete mixes is evaluated by the non-destructive ultrasonic pulse velocity method. This …

Ultrasonic waves propagating in solids have stress-dependent velocities. The relation
between stress (or strain) and velocity forms the basis of non-linear acoustics. In …

This article presents an imaging technique to locate a weak perturbation in a multiple
scattering environment. We derive a formula to predict the spatiotemporal decorrelation of …

Coda wave interferometry is a recent analysis method now widely used in seismology. It
uses the increased sensitivity of multiply scattered elastic waves with long travel-times for …

This paper describes the use of an ultrasonic imaging technique (Locadiff) for the Non-
Destructive Testing & Evaluation of a concrete structure. By combining coda wave …

In civil engineering structures, the first layer of concrete plays a role in terms of water-
tightness, and contributes to the protection of metal frames from corrosion by external …

Real-time damage evaluation is a critical step to warrant the integrity of turnout systems in
railway industry. Nevertheless, existing structural health monitoring (SHM) approaches …

The damage in reinforced concrete (RC) structures can be induced either by the dynamic or
static load. The inspection technologies available today have difficulty in detecting slowly …