Abstract:
Honeycombs are formed due to trapped air voids
around the coarse aggregates during concreting. These can
form inside the concrete structures and on the surface as well.
Detecting honeycomb concrete structures is essential to
ensure the structural integrity and durability of the structure.
However, detecting internal honeycombs are much
cumbersome as it is not visible to naked eyes. Ground
Penetrating Radar (GPR) is a system that emits and receives
Electromagnetic waves which can penetrate through different
materials and could detect any disturbances on its travel path.
Using the GPR output data, we can identify the defects,
honeycombs. Further, Laser imaging Detection and Ranging
(LiDAR) emits and receives Laser waves to acquire surface
details and reconstruct 2.5D models as Point Clouds. Each of
these systems has individual drawbacks. By combining both
the systems we can produce data sets that can be used to
reconstruct a full 3D understanding of the structure and to
conduct further analysis. This paper reviews the pros and
cons of GPR and LiDAR and proposes a method on how a full
3D understanding can be obtained using both of these systems
and the limitations in the real-world applications of this
synergy.
