2. OUTLINE
 Historical
 INTRODUCTION
• Non Destructive Test
• Rebar Detector
• More information
 SIGNIFICANCE
 MECHANISM
 APPARATUS
 PROCEDURE

3. • These advanced inspection techniques can
be expensive due to the need of having
professionally trained technicians to perform
the testing and to acquire and analyze the
inspection results. Examples of NDT
techniques that can be used for rebar
location are ground-penetrating radar (GPR)
and magnetic devices such as cover meters
Historical

4. • The researchers performed a literature review
of the primary techniques for use to detect
steel rebar embedded in concrete structures.
Three methods were identified: nuclear,
magnetic and ground penetrating radar
method. For each method, principles and
advantages and disadvantages were is
cussed.
• After performing a detailed literature review
and understanding both advantages and
limitations of each rebar locator method, the
researchers decided to focus on detecting
cover meters devices available on the market.

5. • Non Destructive Testing (NDT) methods are
popular for routine inspection of bridge
members. With the ability of new highly
technical systems, some of these NDT
techniques can be used for reinforcing steel
rebar location in concrete bridge decks
without destruction of the members being
tested. Use of these techniques has the
ability to minimize traffic restrictions related
to field data collection and to improve design
and asset management..
Non Destructive Test

6. Rebar Detector
• Rebar detector is one of the NDT, which are
used to locate the steel bar embedded in
concrete before drilling and before taking core
test.
• It is the easiest and fastest ways for detecting
reinforcing bar in concrete. It is widely used
before coring or drilling holes to find “safe
spots” .
• It will indicate rebar location, direction and
also will give an indication of the depth of
concrete cover.

7. More information
• The rebar detection instrument Profoscope
has a unique real-time visualization
mechanism, allowing the contractor to actually
see the location of rebars beneath the
concrete surface. The Profoscope+ features
data storage for automatic collection of data to
make rebar detection more efficient. The
Profometer 5+ combines rebar detection and
measurement of concrete cover and bar
diameters in one instrument.

8. Profometer 5+
The Profometer 5+ is an
advanced device for the
non destructive
detection of rebars and
for the measurement of
concrete cover and bar
diameters.

9. Profoscope
The fully integrated
Profoscope for quick
and easy rebar
detection.

10. Profoscope +
The Profoscope+ has
the same features as
the Profoscope, but
additionally offers the
innovative memory
function for data
acquisition.

11. Profometer PM-600 / 630
The Profometer PM-
600 / 630 are
advanced cover
meters which come
with the new
generation Profometer
Touch screen unit.

14. SIGNIFICANCE
• Hitting a rebar however boring into the
reinforced concrete moreover taking core may
be destroy the drilling instrument and can
severely weaken the concrete structure.
• An instrument for rebar detection that quickly
and accurately determines the location of the
reinforcing bars in the concrete.

15. MECHANISM
• A rebar detector works on the principle that
the steel within the concrete will be affected
by a magnetic field that is applied by the
detector.
• By assuming a set magnetic property for all
steel reinforcing bars and using a given bar
size, the detector can predict the depth and
location of the reinforcing bars.

17. • The signal received will increase with
increasing bar size and decrease with
increasing cover.
• To locate the bar position, the distance to
the bar is minimized, indicating that the
rebar detector is directly over a piece of the
reinforcing steel.

18. Apparatus
• Rebar detector (Micro Cover Meter)
• Ruler
• Marker

19. Procedure
• The instrument is laid at the surface of the
column or slab.
• An Instrument is moving from the left to right
and then from the bottom to up to get the
position of the reinforcement.
• Once the location of rebar are found, a
masonry drill is used to locate the total cover
to the rebar.