Powercrete Plus Datasheet - Lafarge in South Africa

Special Characteristics
Flexibility:
Powercrete Plus can be extended further with DuraPozz®, slag
(GGBS) or silica fume, to produce a wide range of customised site
blends.
Scope for extension:
Extensive trials have demonstrated the potential for further cement
replacement with an additional 15% up to 30% DuraPozz® or 30%
up to 50% slag (GGBS).
Reduced water demand:
Typically, the water demand of a concrete mix made with Powercrete
Plus is reduced by between 2% and 5% compared with a CEM I
class cement. The reduction depends on a number of factors in
addition to the amount of fly ash in the cement.
Lower heat of hydration:
Powercrete Plus contributes to lower temperatures in mass concrete.
Peak temperatures are also at a later age, resulting in more mature concrete.
A typical value for Heat of Hydration determined in accordance with
EN 196-9 is 227J/g at 41h, making Powercrete Plus a low heat common
cement (< 270J/g).
strengtH development
Powercrete Plus is formulated to meet the high, good early strength
requirements of specialist technical applications. This is of particular
benefit in applications such as post-tensioning of prestressed beams.
strengTH performance
Powercrete Plus
Quality
Powercrete Plus complies with the chemical and physical
requirements of SANS 50197 (EN197) for a Class II 42,5R cement.
Physical properties
Property
*Average test results
Powercrete
Plus*
EN Spec.
requirement
2 day Compressive strength 22,5 MPa ≥ 10,0 MPa
28 day Compressive strength 56,5 MPa ≥ 42,5 MPa ≤ 62,5 MPa
Initial set 200 minutes ≥ 60 m
Soundness 1,0 mm ≤ 10,0 mm
Relative Density 3,04 N/A
chemical properties
EN Spec.
Property
Powercrete Plus
requirement
SO 3 2,10% ≤ 3,5% m/m
CI - 0,051% ≤ 0,10% m/m
Reliability
Our Lichtenburg Cement Works and Richards Bay Grinding Station are
SABS/ISO 9001-2000 listed. The strength development and performance
of Powercrete Plus is continually monitored for compliance with Lafarge’s
stringent in-house standards (referred to as “Usage Quality Testing”).
Compressive Strength (MPa)
Safety: No 1 priority
Before starting any job, make safety the first step in your planning.
Safety Data sheets are available from:
• Your local building materials supplier
• Lafarge Customer Care on 011 657 1010
• Lafarge website: www.lafarge.co.za
For ease of ordering
Customers who have registered to access the Lafarge Customer Portal, can
order Powercrete Plus at their convenience, 24 hours a day, 365 days a year.
W/C Ratio 3 days 7 days 28 days
Technical services
Powercrete Plus is fully supported by Lafarge Cement’s Quality
Department Southern Africa, which is a SANAS accredited Civil
Engineering testing facility. Complying with ISO/IEC 17025,
the facility has a proud sixteen year track record of continuous
accreditation.
For further information or to register to use the Portal, please contact:
• Your local Lafarge Sales Representative
• Customer Care: 011 657 1010
• Download an Application form from our website: www.lafarge.co.za
Contact us
For further information on Powercrete Plus, please contact us on:
Toll-free: 0860 109 275 or Call Centre: 011 657 1111
or Customer Care: 011 657 1010
Lafarge South Africa
35 Westfield Road
Longmeadow Business Estate Ext 11, Edenvale, 1609
Tel: 0860 LAFARG / 0860 523 274
or 0861 LAFARG / 0861 523 274
Main fax: 086 631 0006
www.lafarge.co.za
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