Seismic Evaluation of Compressed Earth Blocks Using Acoustic Waves: Case of Chichaoua Taroudant
Abstract:
Compressed earth blocks (CEB), also referred to as BTC, are a widely used traditional construction material known for their durability and energy efficiency. However, on September 8, Morocco experienced a devastating earthquake that claimed nearly 3,000 lives, severely impacting provinces such as Al-Haouz, Chichaoua, and Tar oudant. In response to this event, educational activities were suspended in approximately 40 municipalities.As part of an effort to better understand the seismic behavior of local materials, raw soil samples were collected from the village of Amskrdad, situated within the affected Chichaoua-Taroudant region. These samples were then used to produce an unstabilized compressed earth brick. To analyze the mechanical response of the material, waves were induced along the x and y axes, allowing for the measurement of pulse velocity and time of flight. The obtained data enabled the calculation of the signal-to-noise ratio (SNR) for each signal.Test results revealed an elasticity modulus of 2819.92 MPa, while Poisson’s ratio, determined using a Pundit PL200 Proceq device through a com pletely non-destructive testing method, was found to be 0.27. These findings contribute to a deeper understanding of the mechanical properties of compressed earth blocks in seismic conditions, offering valuable insights into the structural reliability of traditional construction methods in earthquake-prone regions.
