CEM I 42.5 R
Composition:
TAPP Portland Cement CEM I 42,5 R is a hydraulic binder according DIN EN 197-1.
Its main ingredient is Portland cement clinker, which together with calcium sulphate as congealment
stabiliser is milled to TAPP CEM I 42,5 R.
By stringent production monitoring during the complete production procedure a uniform quality on
a high level is maintained.
Properties:
TAPP Portland Cement CEMI 42,5 R is low on chromate. By addition of a chromate reducer
the contents of water soluble chromium VI < 2 ppm.
Application:
TAPP Portland Cement CEM I 42,5 R can be used for the production of all concretes according
DIN EN 206-1/DIN 1045-2. Mainly it is applied for concretes of higher strength classes. For
TAPP CEM I 42,5 R the following preferred fields of application unfold:
Concrete goods industry
Because of its strength development the TAPP CEMI 42,5 R is preferentially used for the
production of paving stones, tubes, duct rings, plates as well as civil engineering and gardening
components. The concrete strength needed for clearing the products can be reached fast and thus
an economic production process can be achieved.
Concrete precast industry with TAPP CEM I 42,5 R the concrete strength as requested in the concrete
precast industry can be reached economically.
The speedy strength development of this cement allows for a rational
work process in the concrete precast industry.
Ready-mix concrete industry
By the greater heat development during the setting of the cement TAPP CEM I 42,5 R offers
advantages during the colder season for the production of ready-mix concrete, as at use of this
cement economical stripping and after treatment times can be achieved.
Concrete additives:
The addition of concrete additives is permitted according DIN EN 206-1/DIN 1045-2, if they conform
to the relevant regulations or a general technical approval is available. Concrete additives with
approval may only be used under the conditions as stated in the approval document.
For the production of pre-tensioned concrete with direct bond according DIN 1045-1 as concrete
additives only fly-ash and silica fume or inert powdered minerals according DIN EN 12620 and
pigments with proven harmlessness for pre-tensioning steel, may be used.
An initial test according DIN EN 206-1/DIN 1045-2 is necessary for the addition of concrete
additives.
Concrete admixtures:
The addition of concrete admixtures is permitted according DIN EN 206-1/DIN 1045-2, if they conform
to the relevant regulations or a general technical approval is available and when used under the
conditions as stated in the approval document.
An initial test according DIN EN 206-1/DIN 1045-2 is necessary for the addition of concrete
admixtures.
Quality control:
TAPP Portland Cement CEM I 42,5 R is subject to a self monitoring by our in-house laboratories
Delivery:
As bulk in silo trucks and bagged good in bags with 25 kg contents.
Storing: TAPP Portland Cement CEM I 42,5 R must be dry stored and protected against humidity.
Cited standards:
DIN EN 197-1 Cement.
Part1:
Composition, specifications and conformity criteria for common cements
DIN EN 206-1 Concrete.
Part1:
Specification, performance, production and conformity
DIN 1045-1, 2 Concrete, reinforced and pre-stressed concrete structures.
Part1:
Design and construction.
Part2:
Concrete – Specification, properties, production and conformity –
Application rules for DIN EN 206-1
DIN EN 12620 Aggregates for concrete.
