European standards for concrete repair - Concrete Repair - page 191

method) , EN 1062-6, Paints and varnishes - Coating materials and coating
systems for exterior masonry - Part 6: Determination of carbon dioxide
permeability , and EN 13395-3, Determination of workability - Part 3: Test
for flow of repair concrete , which is based on the UK's Highways Agency
specification. A selection of the test standards is given in the references, with a
full list contained in each Part of EN 1504 and in the paper by Davies (Davies
and Robery, 2006).
Revision to Part 9 began in 2006, with the final version issued for CEN
approval in October 2008, so completing the revision task. EN 1504 came
into force on 31 December 2008, on which date all conflicting national
performance standards and test methods across Europe were withdrawn.
The package of performance and test standards covers the whole repair
enterprise, enabling specifiers, engineers, contractors and others to make
genuine comparisons of performance based on common data, linked to a
series of performance specifications for the products.

11.3 EN 1504-9 - General Principles for Protection and Repair
From the outset, TC104/SC8 agreed that EN 1504 should not be a code
of practice but a methodology for the repair process; anything more could
put the standard in conflict with various national regulations of the CEN
member countries. The end result is designed to give guidance on the causes
of deterioration and the need for repair and deliver a repair package using
products and systems tested to European standard methods and approved by
the 'CE-mark', demonstrating that the product or system meets a particular
set of performance requirements. The standard cannot identify the role
of the structure within the client's own strategy or business, or external
constraints such as planning rules, environmental limits on construction
works or conflicts between the client's business processes and certain
repair options. Nor can the standard identify the value of the building to
the client. These are within the remit of the engineer and asset manager
and will vary nationally. Also, the standard is not intended to be a repair
manual and for example, does not give details on how a structure should be
inspected, tested, diagnosed and structurally appraised. Other documents
give appropriate levels of guidance (e.g. Broomfield, 2007, Bungey et al.,
2006, Concrete Society TR54, 2000).
Regarding methodology, EN 1504 has two parts reflecting design and
execution: EN 1504-9 General principles for the use of products and systems ;
and EN 1504-10 Site application of products and systems and quality control
of works .
EN 1504-9 was conceived to provide:

• a logical repair methodology

• a technical standard structured so as to allow the client to exercise

economic choices based upon whole-life costing