AdirPro N Manuale utente
Concrete
USER GUIDE
ADI709-01
Impact
Hammer
PRO QUALITY FOR THE
PROFESSIONAL.
AdirPro is known for its quality products in the construction industry, all
manufactured to the highest standards. We strive to help you complete
your project in the most reliable, safe, and cost-effective manner. We
deliver everything with accuracy you can count on so your team can
count on you.
Thank you
for your
purchase.
Table of Contents
1 Important Safety information
3 Measuring
18 Maintenance
24 Data
25 Limited Warranty
27 Disclaimer
28 Notes
1
Important Safety Information
GENERAL INFORMATION
Basic information
The concrete test hammer is designed according to state-of-
the-art technology and recognized safety regulations. Please
read through these operating instructions carefully upon initial
startup. They contain important information about safety, use
and maintenance of the concrete test hammer.
Designated Use
The concrete test hammer is a mechanical device used for
performing rapid, nondestructive quality testing on materials in
accordance with the customer’s specications; in most cases,
however, the material involved is concrete. The device is to be
used exclusively on the surfaces to be
tested and on the testing anvil.
Liability
Our “General Terms and Conditions of Sale and Delivery” apply
in all cases. Warranty and liability claims arising from personal
injury and damage to property cannot be upheld if they are due
to one or more of the following causes:
• Failure to use the concrete test hammer in accordance
with its designated use
• Incorrect performance check, operation and maintenance
of the concrete test hammer
• Failure to adhere to the sections of the operating
instructions dealing with the performance check,
operation and maintenance of the concrete test hammer
• Unauthorized structural modications to the concrete test
hammer
• Serious damage resulting form the effects of foreign
bodies, accidents, vandalism and acts of God.
2
Important Safety Information
SAFETY REGULATIONS
General Information
• Perform the prescribed maintenance work on schedule.
• Carry out a performance check once the maintenance
work has been completed.
• Handle and dispose of lubricants and cleaning agents
responsibly.
Unauthorized Operators
The concrete test hammer is not allowed to be operated by
children and anyone under the inuence of alcohol, drugs or
pharmaceutical prescriptions. Anyone who is not familiar with
the operating instructions must be supervised when using
the concrete test hammer.
Safety Icons
The following icons are used in conjunction with all important
safety notes in these operating instructions.
Standards and Regulations Applied
DANGER WARNING
This note indicates a risk of
serious or fatal injury should
certain rules of behavior be
disregarded.
This note warns you about the
risk of material damage, nancial
lossand legal penalties (e.g. loss of
warranty rights, liability cases, etc.)
• ISO/DIS 8045 International
• EN 12 504-2 Europe
• ENV 206 Europe
• BS 1881, part 202 Great Britain
• DIN 1048, part 2 Germany
• ASTM C 805 USA
• NFP 18-417 France
• B 15-225 Belgium
• JGJ/ T 23-2001 China
• JJG 817-1993 China
3
Measuring
MEASURING PRINCIPLE
The device measures the rebound value R. There is a Specic
relationship between this value and the hardness and strength
of the concrete.
The following factors must be taken into account when
ascertaining rebound values R:
• Impacting direction: horizontal, vertically upwards or
downwards
• Age of the concrete
• Size and shape of the comparison sample (cube, cylinder)
Models N and NR can be used for testing:
• Concrete items 100 mm or more in thickness
• Concrete with a maximum particle size ≤ 32mm
Models L and LR can be used for testing:
• Items with small dimensions (e.g. thin- walled items with a
thickness from 50 to 100mm)
IMPORTANT: If necessary, clamp the items to be tested prior
to measurement in order to prevent the material deecting.
• Items made from articial stone which are sensitive to
impacts.
IMPORTANT: Preferably perform measurements at
temperatures between 50ºF and 122ºF only.
MEASURING PROCEDURE
The items in (brackets) are illustrated in Figure4, on page 5.
Perform a few test impacts with the concrete test hammer on a
smooth, hard surface before taking any measurements which
you are going to evaluate.
4
• Use a grindstone to
smoothen the test surface.
(Figure 1)
Preparing the test surface
• Position the concrete test
hammer perpendicular to
the test surface.
• Deploy the impact plunger
(1) by pushing the concrete
test hammer towards the
test surface until the
push button springs out.
(Figure 2) Deploying the impact plunger (1) (model NR)
IMPORTANT: Each test surface should be tested with at least
10 impacts. The individual impact points must be spaced at
least 20mm apart.
Measuring
The device measures the rebound value R. There is a Specific relationship between this
value and the hardness and strength of the concrete.
The following factors must be taken into account when ascertaining rebound values R:
- Impacting direction: horizontal, vertically upwards or downwards
- Age of the concrete
- Size and shape of the comparison sample (cube, cylinder)
Models N and NR can be used for testing:
- Concrete items 100 mm or more in thickness
- Concrete with a maximum particle size
Models L and LR can be used for testing:
- Items with small dimensions (e.g. thin- walle
If necessary, clamp the items to be tested prior to measurement in order to
prevent the material deflecting.
- Items made from artificial stone which are sensitive to impacts.
!gninraW
The impact plunger (1) generates a recoil when it deploys. Always hold the
concrete test hammer in both hands!
The device measures the rebound value R. There is a Specific relationship between this
value and the hardness and strength of the concrete.
The following factors must be taken into account when ascertaining rebound values R:
- Impacting direction: horizontal, vertically upwards or downwards
- Age of the concrete
- Size and shape of the comparison sample (cube, cylinder)
Models N and NR can be used for testing:
- Concrete items 100 mm or more in thickness
- Concrete with a maximum particle size
Models L and LR can be used for testing:
- Items with small dimensions (e.g. thin- walle
If necessary, clamp the items to be tested prior to measurement in order to
prevent the material deflecting.
- Items made from artificial stone which are sensitive to impacts.
Danger!
Always hold the concrete test hammer in
to the test surface, before u trigger the impact!
Each test surface should be tested with at least 10 impacts. The individual
impact points must be spaced at least 20 mm apart.
WARNING
The impact plunger (1) generates a recoil when it deploys. Always
hold the concrete test hammer in both hands!
DANGER
Always hold the concrete test hammer in both hands, perpendicular
to the test surface, before you trigger the impact!
5
• Position the concrete test
hammer perpendicular to
and against the test surface.
Push the concrete test
hammer against the test
surface at moderate speed
until the impact is triggered
(a high beep acknowledges
registration).
• Repeat this procedure for the whole measurement series.
(Figure 3) Performing the test (illustration shows model NR)
• If you are using models N and L, press the pushbutton (6) to
lock the impact plunger (1) after every impact. Then read off
and note down the rebound value R indicated by the pointer
(4) on the scale (19).
• If you are using models NR and LR, the rebound value R
is automatically printed on the recording paper. It is only
necessary to lock the impact plunger (1) using the push
button (6) after the last impact.
(Figure 4) Reading the test result from the scale (19) on models
N and L
Measuring
The device measures the rebound value R. There is a Specific relationship between this
value and the hardness and strength of the concrete.
The following factors must be taken into account when ascertaining rebound values R:
- Impacting direction: horizontal, vertically upwards or downwards
- Age of the concrete
- Size and shape of the comparison sample (cube, cylinder)
Models N and NR can be used for testing:
- Concrete items 100 mm or more in thickness
- Concrete with a maximum particle size
Models L and LR can be used for testing:
- Items with small dimensions (e.g. thin- walle
If necessary, clamp the items to be tested prior to measurement in order to
prevent the material deflecting.
- Items made from artificial stone which are sensitive to impacts.
If you are using models N and L, press the pushbutton (6) to lock the impact plunger (1)
after every impact. Then read off and note down the rebound value R indicated by the
pointer (4) on the scale (19).
If you are using models NR and LR, the rebound value R is automatically printed on the
recording paper. It is only necessary to lock the impact plunger (1) using the push button
(6) after the last impact.
Impact Plunger
Rider with
Guide Rod
Plexiglass
Window
Push Button
(Complete)
6
OUTPUTTING AND EVALUATING DATA
Output
Models N and L:
After every impact, the rebound value R is displayed by the
pointer (4) on the scale of the device.
Models NR and LR:
The rebound value R is automatically registered on the
recording paper.
It is possible to record about 4000 test impacts on each roll.
Evaluation
Take the average of the 8 – 10 rebound values R which you
have measured.
IMPORTANT: Do not include values which are too high or too
low (the lowest and highest values) in your calculation of the
average value.
• Determine which conversion curve is appropriate for the
selected body shape (see Figure 5 to Figure 10, on pages
8-13)Then, using the average rebound value Rm and the
selected conversion curve, read off the average compressive
strength.
IMPORTANT: Note the impact direction!
The average compressive strength is subject to a dispersion (±
4.5 N/mm² to ±8 N/mm²).
Measuring
7
CONVERSION CURVES
Derivation of the conversion Curves
The conversion curves (Figure 5, to Figure 10) for the concrete
test hammer are based on measurements taken on very many
sample cubes. The rebound values R of the sample cubes
were measured using the concrete test hammer. Then the
compressive strength was ascertained on a pressure testing
machine. In each test, at least 10 test hammer impacts were
performed on one side of the test cube which was lightly
clamped on the press.
Validity of the Conversion Curves
• Standard concrete made from Portland or bleat furnace slag
cement with sand gravel (maximum particle size dia. ≤ 32 mm)
• Smooth, dry surface
• Age: 14 – 56 days
Empirical values:
The conversion curve is practically independent of the:
• Cement content of the concrete
• Particle graduation,
• Diameter of the largest particle in the ne gravel mixture,
providing the diameter of the maximum
• Water/cement ratio
Measuring
Questo manuale è adatto per i seguenti modelli
7
Indice
