Effect Of Steel Bars, Aggregates, And Multilayer In Reinforce Concrete Structure On Acoustic Wave Propagation

Jenal, Ruztamreen and Muhammad, Nor Salim and Mohamed Nor, Mohd Khairi and Abdullah, Zulkeflee (2017) Effect Of Steel Bars, Aggregates, And Multilayer In Reinforce Concrete Structure On Acoustic Wave Propagation. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text Effect Of Steel Bars, Aggregates, And Multilayer In Reinforce Concrete Structure On Acoustic Wave Propagation.pdf - Submitted Version Restricted to Registered users only Download (425kB)

Abstract

Guided wave technique has good track record in nondestructive inspections of petrochemical pipelines. However, guided wave is complicated and propagates in many modes. At the same time, the acoustic technique for inspection of civil infrastructures including walls, floors, pillars, bridges, and underground pile foundations still not been investigated widely by many researchers and the structures suffer of aging spalls, cracks, concrete deformations, rebar corrosions, seismic activities, and increase of pressure or temperature due to accidents of pipeline leakage. This study investigates fundamental behavior of low frequency guided wave propagation in reinforce concrete plate to understand the wave behaviors for inspection of concrete structures. The modeling of the acoustic wave propagation in reinforce concrete plate with steel bars at different diameters aims to achieve objectives on studying the behavior of different wave mode propagations in concrete structures due to the effect of steel bar, aggregate, and multilayer in civil infrastructures and pile foundations. Wave modes are studied using three different mortar aggregates in concrete plates (types M, N, and S) with steel bars to verify the effect of steel bar, aggregate, and multilayer on the acoustic wave propagation. Findings from this study demonstrate potential of low frequency guided wave modes for inspection of concrete walls, floors .bridges, and embedded pile foundations (including pile length, corrosion, deformation, crack, spall, and abrasion) during and after the construction of large structures. Results from the study also will explain effect of aggregates on the wave propagation and establish relationship between number of wave cycles and distance of wave propagation in concrete structures with aggregate and steel bars. It provides a guideline in future study to develop an onsite inspection system for civil infrastructures and underground pile foundation to avoid failures on the structures.

Actions (login required)

View Item