Sulfate Resisting Cement
Ideal in dockland or wharf surroundings
Minimises the risk of sulfuric acid attacks in
sewerage works
Minimises the risk of corrosion of reinforced
steel in saltwater environments
Sulfate Resisting Cement
Sulfate Resisting Cement is a blended cement designed to improve the
performance of concrete where the risk of sulfate attack may be present. It also
provides improved durability for concrete in most aggressive environments,
reducing the risk of deterioration of the structure and structural failure.
A properly designed concrete for use in aggressive environments needs to have an appropriate
cementitious content, a low water:cement ratio, and be well compacted and cured. It is recommended
that specialist advice be obtained during the project design stage to ensure that the concrete is
adequate for the expected service.
A concrete designed to provide improved sulfate resistance should have greatly reduced permeability
which should also provide increased resistance to the penetration of chloride ions, reducing the risk of
corrosion in reinforcing steel.
Sulfate Resisting Cement complies with the requirements specified in Australian Standard 3972 for
Type SR cement. It also complies with AS 3972 requirements for Type SL (Shrikage Limited) cement.
Unique product benefits
Provides maximum resistance to chloride ions - minimising the risk of corrosion of reinforced steel
Provides high level of concrete performance and structural integrity in highly aggressive sulfate and
acidic environments
Increased workability and pumpability
Significantly improved later-age concrete strengths
Product applications
To minimise the risk of chemical attack resulting in concrete deterioration and structural failure,
Sulfate Resisting Cement should be specified in the following applications:
Abattoirs, piggeries, feedlots and food processing plants
Geothermal areas
Sewerage treatment plants
Mines and other acidic soil environments
Dairying, forestry, fishing and other environments with structures susceptible to chemical attack
To minimise the risk of chloride induced corrosion in reinforcing steel and to ensure long-term durability,
Sulfate Resisting Cement should be specified in the following applications:
Wharfs and marinas
Sea walls, dams and reservoirs
Water and sewage pipelines and treatment plants
Off-shore platforms
Bridges and any other submerged structures in tidal and splash zones
Sulfate Resisting Cement is a specially blended cement
designed to improve the performance of concrete in sulfate
environments and help improve durability.
Where specific properties such as high early strength or
rapid setting are of primary importance an alternative
cement should be considered.
Sulfate Resisting Cement
Properties
Ground granulated blast furnace slags complying with
AS3582.2 - Supplementary cementitious materials for
use with Portland cement: Slag - ground granulated
Iron blast-furnace.
Amorphous Silica complying with AS3582.3 Supplementary cementitious materials for use with
Portland cement: Amorphous silica.
The following table details the relevant specified
Other cements complying with AS3972 - Portland and
blended cements.
requirements of AS3972 and the indicative values
achieved by Sulfate Resisting Cement.
Property
AS3972
Type SR
Indicative
Sulfate Resisting
Caution: Sulfate Resisting Cement must not be mixed with
high alumina cement as this may result in uncontrollable
expansion and setting times.
Min
45min
125-200 min
Max
10 hrs
3-5 hrs
Soundness
Max
5 mm
< 1mm
SO3
Max
3.50%
< 2.0%
3 Day (min)
15-30 MPa
7 Day (min)
20 MPa
25-35 MPa
specific classes of concrete. For further guidance on this
28 Day (min)
35 MPa
50-55 MPa
issue please refer to AS1379 The specification and
max
750S
100-350S
manufacture of concrete and AS3600 Concrete structures.
Setting Time
ISO Mortar
Compressive
Strength
Expansion
(in Sulfate solution)
Mix Design
All testing is conducted in accordance with the relevant Australian Standard test
methods, at a NATA registered laboratory.
Sulfate Resisting Cement meets the requirements of AS3972
for classification as both Shrinkage Limited (Type SL) and a
Sulfate Resisting (Type SR) cement. However use of this
product does not guarantee sulfate resisting or low
shrinkage concrete as there are other factors which may
influence concrete performance including cementitious
content, water to cement ratio, compaction and curing as
The proportioning of constituent materials in a concrete mix
is a complicated matter which can be influenced by many
factors. We recommend that trials be conducted with the
available materials to ascertain optimum cement contents for
Concrete Properties
Compressive Strength Development
Strength development in Portland cement concrete is
affected by a number of factors such as the physical and
chemical properties of the cement, water to cement ratio,
admixtures, curing and environmental conditions. The
following graph depicts indicative compressive strength
development for Sulfate Resisting Cement.
well as aggregate type. Further advice should be sought on
the use of this product where high performance
120
Compatibilities
Sulfate Resisting Cement is compatible with:
Admixtures that comply with AS 1478 Chemical
Admixtures for Concrete.
Fly ashes complying with AS 3582.1 Supplementary
Cementitious Materials for Use with Portland cement:
Fly ash.
% of 28 day compressive strength
requirements exist.
100
80
60
40
20
3 Days
7 Days
28 Days
Maturity
56 Days
Effect of Excess Water Addition on Concrete
Compressive Strength
Curing
24 MPa
for all exposure classifications. Concrete should be
A minimum curing period of seven days is recommended
maintained in a continually moist condition wherever
20 MPa
practicable. Water sprays, wet sand or moisture retaining
Lo
ss
16 MPa
of
techniques, such as clear polyethylene sheets or curing
Str
en
compounds are recommended. Curing should begin upon
gt
the completion of surface finishing or in accordance with
12 MPa
manufacturers instructions where proprietary curing
compounds are used.
8 MPa
For normal class concrete, curing can produce a compressive
4MPa
strength up to 100% greater than concrete not subjected to
curing. Water application or moisture retaining curing is more
Design
+10 L/m3
+20 L/m3
+30 L/m3
Water
Curing will also beneficially affect other concrete properties
16 Week Mortar Bar Expansion in Sulfate Solution
(As per AS2350.14)
including:
Reduction in the potential for plastic cracking.
Improvements in surface quality, durability and
900
impermeability.
800
Microstrain
effective for lower grades of concrete.
700
Improvement in abrasion resistance.
600
Reduction in the carbonation rate.
500
400
300
200
100
0
Slag Blend
Fly Ash Blend
AS2350.14 Limit
Workability / Setting Times
Concrete produced with a Sulfate Resisting cement may
require less water to achieve a specified level of workability
when compared to concrete produced with a Type GP
For further information
Please contact Cement Australias Customer
Support Services:
Tel: 1300 236 368
Fax: 1800 236 329
Email: 1300cement@cemaust.com.au
cement. Setting times may also be significantly extended
when using Sulfate Resisting Cement.
Storage, Handling and Safety
The 'shelf life' of Portland cement products is dependent on the storage conditions. It is recommended that Portland cement products be re-tested
prior to use if the age of the cement exceeds three months.
Portland cement products are highly alkaline materials and are significantly affected by exposure to water. Full Safety, Storage, Handling and Disposal
information is available in the specific product Material Safety Data Sheet available on www.cemaust.com.au
Product Disclaimer
The information contained in this sheet is for general guidance only and should not be relied upon in specific instances. Cement performance
results quoted are indicative as cement performance can be heavily influenced be a wide range of factors beyond our control. Users should
rely on professional advice according to their particular circumstances. To the extent permissible by law Cement Australia will not be liable for any
losses due to reliance on the information in this sheet or for losses due to the misuse of its products.
Cement Australia Pty Limited
ABN 99 001 085 561
12 Station Avenue
Darra Queensland 4076
Tel: 1300 CEMENT (1300 236 368)
www.cementaustralia.com.au
CA0624 SRC Revision 2 18/03/2011
