Civil Engineering Reference
In-Depth Information
Requirement
Structural
Performance
characteristic
Item
Test method
Non-structural
Class R4
Class R3
Class R2
Class R1
6
Elastic modulus
EN 13412
≥
20 GPa
≥
15 GPa
No requirement
Bond strength after 50 cycles
7
EN 13687-1
t2.0 MPa
t1.5 MPa
t0.8 MPa
Visual
inspection
after 50
cycles
Bond strength after 50 cycles
8
EN 13687-2
t2.0 MPa t1.5 MPa t0.8 MPa
Bond strength after 50 cycles
9
EN 13687-4
t2.0 MPa
t1.5 MPa
t0.8 MPa
Class I: >40 units wet tested
Class II: >40 units dry tested
Class III: >55
units wet tested
10
Skid resistanc
e*
EN 13036-4
Coefficient of
thermal expansion
Not required if tests 7, 8 or 9 are carried out,
otherwise dec
lared value
11
EN 1770
Capillary
absorption
No
requirement
12
EN 13057
d 0.5 kg m
-2
hour
-0.5
*
product or system applied to a reference concrete substrate to EN 1766
standards (i.e. for all intended uses and certain intended uses, as listed in
Tables 11.6
and
11.7)
.
It is a requirement of the CE-marking process that the label only carries the
fact that the product passes the test; the specifier would have to refer to the
manufacturer's data sheet to find the actual test results for the individual test
method.
11.6 Summary
Repair and rehabilitation plays an important part in the effective management
of concrete assets, but opinions have differed as to the best way to tackle
a deteriorating concrete structure. Repair practice is rapidly changing,
with a constant stream of new products and systems available, bringing a
bewildering range of claims before the architect, designer and specifier.
The new European Standard EN 1504 'Products and systems for the
protection and repair of concrete structures', has been developed to help the
specifier choose the correct repair products and systems for the job and the
requirements of the Construction Products Directive, as realised through the
