Engineering structure decks are made of carefully formulated concrete but nevertheless require surface waterproofing to protect their reinforcing or prestressing steel from corrosion. Polymer bitumen membranes can be used to ensure durable waterproofing, even when the concrete is cracked. Eurovia’s Hydroplast® sheet is a high-performance solution.

1. HYDROPLAST
PREFABRICATED SHEET WATERPROOFING
Flawless waterproofing

2. key
Benefits
Excellent crack resistance
Low thermal sensitivity
Flexible process with high adhesion
Production NF EN ISO 9001 : 2008
certified
Key
figures
Nearly 2 millions m2
of waterproofing laid
Applied for
over 30 years
HYDROPLAST
PREFABRICATED SHEET WATERPROOFING
Engineering structure decks are made of carefully formulated concrete but nevertheless
require surface waterproofing to protect their reinforcing or prestressing steel from corrosion.
Polymer bitumen membranes can be used to ensure durable waterproofing, even when the
concrete is cracked. Eurovia’s Hydroplast sheet is a high-performance solution.

3. A multipurpose
SOLUTION
Hydroplast is a prefabricated waterproofing sheet
for concrete structures. It is thermally bonded over
its entire surface to a substrate where a priming has
previously been laid.
Hydroplast is a single-layer waterproofing
sheet defined in the French General Technical
Specifications, Publication 67 Title 1. It is overlaid
directly with one or several asphalt mix layers to
support traffic.
Hydroplast is used as adhesive waterproofing
on bridge decks and civil engineering structures:
bridges, viaducts, overpasses, car parks, shafts,
chutes, cut-and-cover trenches, canals, technical
ducts, etc. The process can be used to waterproof
structures of all dimensions.
for bridges And more
Hydroplast sheet is also used in Simplast®
, Simplex®
and Orthoplast H waterproofing complexes.
Simplast®
is made up of a Hydroplast sheet
overlaid with a protective layer of asphaltic
concrete in a minimum thickness of 30 mm.
Simplex®
is made up of a Hydroplast sheet
covered by a thick 1,800 g/m2
felt. The felt
protects against shear failure and ensures
drainage at the sheet surface.
Orthoplast H is a waterproofing process for metal
decks.
It is made of a Hydroplast sheet and an asphaltic
concrete specially formulated with a polymer
modified binder.
The Simplast®
and Simplex®
processes have been
approved by the French Railways, Simplast®
as waterproofing for road and rail bridges and
Simplex®
for rail bridges only.
All processes using Hydroplast are laid by
experienced Eurovia teams.

4. proven PERFORMANCES
Hydroplast is made of a highly modified increased-
filler bituminous binder and a non-woven polyester
reinforcement. The SBS elastomer modified bitumen
provides flexibility, elasticity, adhesion and low
thermal sensitivity. The reinforcement provides
tensile strength and resistance to shear failure and
perforation.
Hydroplast is produced in a factory using an
ISO 9001 certified process. The surface of the sheet
is protected by light grey aggregates and a meltable
plastic film protects its underside. It is supplied in
standard 8 metre x 1 metre rolls with a unit weight of
48 kg.
Hydroplast has excellent resistance to substrate
cracking. In the Aix en Provence LRPC cracking test
at -10°C and 30 mm/hr, no cracking or delamination
was observed at 9 mm opening in either the standard
test or the fatigue test (200 cycles of 1 mm opening
at 20°C and 30 mm/hr).The requirement given by
Publication 67 for this test is 2 mm.
expertise
ACKNOWLEDGED
The sheet is laid over a substrate that has been
cleaned by high-pressure water and/or mechanical
means. The substrate macro-texture must have an
average texture depth of less than 1.5 mm.
If need be, the substrate can be locally or completely
reprofiled before the sheet is laid; asphalt mix
reprofiling over the sheet is also possible. The
equipment used to lay Hydroplastdoes not require
road access.
The concrete is cold primed with a solvented polymer
bitumen dressing (250 to 300 g/m2
) applied by roller
or gun. A precise laying plan is then drawn up and the
sheet is unrolled lengthwise along the structure and
welded to the dry substrate over its entire surface by
melting the bitumen of the underside with a hand-
held blowtorch or pipe burner. Laying machinery may
also be used.
Adjacent edges and roll ends are lapped by at
least 5 cm. Ends are staggered to avoid excessive
thickness. Welding is followed by careful taping to
ensure that no air remains between the substrate
and the sheet.
TECHNICAL DEPARTMENT
18, place de l’Europe - 92565 Rueil-Malmaison Cedex
Tel. : 33 (0)1 47 16 38 00 - Fax : 33 (0)1 47 16 38 01
www.eurovia.com
technique@eurovia.com
-February2014-photoscredit:photolibraryEurovia
A Technical Opinion was issued for Hydroplast and renewed
in March 2011.
Simplex®
is a patented process.
Simplast®
and Simplex®
are registered trademarks.
Pot life (NF P 18-810)
Mass per unit area of reinforcement 180 g/m2
Total mass per unit area 6,250 g/m2
Nominal single-layer surface thickness 4.5 mm