Roadcem brochure - Lafarge in South Africa
Roadcem brochure - Lafarge in South Africa
Roadcem brochure - Lafarge in South Africa
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CEMENT<br />
Meet<strong>in</strong>g the needs of the<br />
road construction <strong>in</strong>dustry<br />
Soil<br />
stabilisation
LAFARGE<br />
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CONTENTS<br />
Soil stabilisation – an overview<br />
Mechanism of cement stabilisation<br />
Recommended cements<br />
Optimum solutions for soil stabilisation<br />
Innovative <strong>Lafarge</strong> design<br />
Composition and benefits<br />
Strength<br />
Performance characteristics<br />
Support services for road contractors<br />
Load <strong>in</strong>tegrity of bulk deliveries<br />
Bagged product deliveries<br />
Car<strong>in</strong>g for the environment<br />
- Cementitious extenders and the environment<br />
- Green Build<strong>in</strong>g Council<br />
10<br />
About <strong>Lafarge</strong> <strong>in</strong> <strong>South</strong> <strong>Africa</strong><br />
- Technical resources<br />
11<br />
11<br />
12<br />
Safety when handl<strong>in</strong>g cement<br />
International <strong>Lafarge</strong> Group<br />
Order<strong>in</strong>g made easy<br />
PAGE 1 | LAFARGE | 2012
LAFARGE<br />
Soil stabilisation – an overview<br />
Soil stabilisation is used to overcome deficiencies <strong>in</strong> available road construction material<br />
by enhanc<strong>in</strong>g the material properties for pavement design purposes.<br />
Stabilisation products are designed to control the plasticity and enhance the strength of various road<br />
mak<strong>in</strong>g materials. The pr<strong>in</strong>cipal products used are lime, Portland cement, fly ash, slag or mixtures<br />
of these to address the specific site conditions and conform to the applicable standards.<br />
Cementitious stabilisation products<br />
Cementitious products are suitable for granular soils where the soils are not reactive to lime but are<br />
not recommended <strong>in</strong> heavy clay soils with a high Plasticity Index (PI).<br />
Cementitious extenders<br />
Fly ash and slag extended cements provide longer work<strong>in</strong>g time (open time) and slower strength ga<strong>in</strong><br />
Benefits of cementitious products<br />
Cementitious products make a positive contribution to economic and resource susta<strong>in</strong>ability by<br />
enhanc<strong>in</strong>g the properties of standard and substandard <strong>in</strong> situ soils to the standards required for road<br />
mak<strong>in</strong>g.<br />
Recommended<br />
cements for soil stabilisation<br />
RoadCem is a specialised cementitious b<strong>in</strong>der designed to meet the<br />
needs of a wide range of road stabilisation applications. Depend<strong>in</strong>g on the<br />
specific site conditions, the product is formulated from Portland cement,<br />
siliceous fly ash and GGBS (slag).<br />
RoadCem is suitable for:<br />
• Stabilisation of road base, sub-base and sub-grade materials<br />
• Soils with either low or moderate plasticity - it is especially suited<br />
to granular type materials with a lower PI<br />
• In situ (<strong>in</strong>clud<strong>in</strong>g deep lift) stabilisation or pugmill blend<strong>in</strong>g<br />
• M<strong>in</strong>or general concrete work<br />
Buildcrete is a versatile general purpose cement that has been used<br />
successfully on a wide range of stabilisation projects. Extended with<br />
siliceous fly ash, it provides:<br />
• Slower strength ga<strong>in</strong> <strong>in</strong> this application, giv<strong>in</strong>g considerably more<br />
time than CEM I cement for construction purposes<br />
• Improved ultimate Unconf<strong>in</strong>ed Compresssive Strength (UCS) and<br />
Indirect Tensile Strength (ITS) of stabilised soils<br />
Mechanism of<br />
cement stabilisation<br />
Cement is effective <strong>in</strong> stabilis<strong>in</strong>g a wide range soils <strong>in</strong>clud<strong>in</strong>g granular<br />
materials, silts and light clays. A particular advantage of cement is its<br />
capability of be<strong>in</strong>g used <strong>in</strong> conjunction with by-products such as fly ash<br />
and slag.<br />
Cement is composed of calcium silicates and calcium alum<strong>in</strong>ates that<br />
hydrate when comb<strong>in</strong>ed with water to form the cement<strong>in</strong>g compounds of<br />
calcium silicate hydrate and calcium alum<strong>in</strong>ate hydrate. The reaction also<br />
releases calcium hydroxide (Portlandite). The formation of the cementitious<br />
products and calcium hydroxide make Portland cement successful <strong>in</strong><br />
stabilis<strong>in</strong>g both granular and f<strong>in</strong>e-gra<strong>in</strong>ed soils, as well as aggregates and<br />
miscellaneous materials.<br />
In f<strong>in</strong>e-gra<strong>in</strong>ed clay soils, a pozzolanic reaction between the calcium<br />
hydroxide released dur<strong>in</strong>g hydration and the alum<strong>in</strong>a and silica <strong>in</strong> the soils,<br />
is an important factor <strong>in</strong> the stabilisation of these clay soils.<br />
The permeability of cement stabilised soil is greatly reduced. The result<br />
is a moisture-resistant material that is highly durable and resistant to<br />
leach<strong>in</strong>g over the long term.<br />
PAGE 2 | LAFARGE | 2012<br />
PAGE 3 | LAFARGE | 2012
LAFARGE<br />
Optimum solutions for soil stabilisation<br />
The <strong>Lafarge</strong> range of roadb<strong>in</strong>d<strong>in</strong>g cements offers road project contractors a choice of reliable, quality<br />
performance products, which provide the optimum solution to their soil stabilisation requirements.<br />
The products stabilise soils by reduc<strong>in</strong>g the Plasticity Index (PI), while also improv<strong>in</strong>g the Unconf<strong>in</strong>ed<br />
Compressive Strength (UCS) and Initial Tensile Strength (ITS).<br />
Innovative <strong>Lafarge</strong> design<br />
The unequalled technical resources of <strong>Lafarge</strong> provide road contractors<br />
with formulations that offer superior all-round performance and better<br />
value:<br />
• Slow-sett<strong>in</strong>g cementitious b<strong>in</strong>ders with extended work<strong>in</strong>g time <strong>in</strong><br />
road stabilisation<br />
• Effective <strong>in</strong> reduc<strong>in</strong>g the Plasticity Index of a wide range of pav<strong>in</strong>g<br />
materials<br />
• Formulation options to match the challenges of different soil<br />
conditions<br />
• Superior long-term strength<br />
• Excellent workability for uniform f<strong>in</strong>ished surface<br />
• Quality and reliability of a <strong>Lafarge</strong> brand<br />
• Lower carbon footpr<strong>in</strong>t formulations that aid compliance with<br />
environmental specifications<br />
Composition and benefits<br />
<strong>Lafarge</strong> roadb<strong>in</strong>d<strong>in</strong>g products are formulated<br />
to conform to the SANS 50197 (EN 197)<br />
specifications <strong>in</strong> accordance with SANS 50196<br />
(EN 196) test requirements and are designed to<br />
meet commonly encountered road stabilisation<br />
requirements.<br />
RoadCem CEM II/B-M (V-S) 32,5N is a slowsett<strong>in</strong>g<br />
cementitious b<strong>in</strong>der produced at the<br />
<strong>Lafarge</strong> Randfonte<strong>in</strong> Gr<strong>in</strong>d<strong>in</strong>g Station (on the<br />
west side of Johannesburg) from Portland<br />
cement, siliceous fly ash and slag. The product<br />
provides:<br />
• Slower early rate of strength development,<br />
allow<strong>in</strong>g considerably more time for<br />
construction operations<br />
• Extra ability to self-heal, <strong>in</strong> the event of<br />
early-life damage caused by overload<strong>in</strong>g<br />
• In the long term, an <strong>in</strong>creased strength<br />
that improves the structural performance<br />
Buildcrete CEM IV/B-V 32,5R<br />
The well-known <strong>Lafarge</strong> Buildcrete general<br />
purpose cement is produced at the <strong>Lafarge</strong><br />
Lichtenburg Cement Works <strong>in</strong> the North West<br />
Prov<strong>in</strong>ce and at the Randfonte<strong>in</strong> Gr<strong>in</strong>d<strong>in</strong>g<br />
Station, from Portland cement and fly ash. This<br />
versatile ‘R’ class cement has a relatively slower<br />
strength ga<strong>in</strong> compared with CEM I cements for<br />
soil stabilisation purposes. Buildcrete offers:<br />
• Slower strength ga<strong>in</strong> than nonextended<br />
products, giv<strong>in</strong>g more time for<br />
construction operations<br />
• Higher ultimate strength and improved<br />
durability of the stabilised soil layer<br />
• Good self-heal<strong>in</strong>g ability, <strong>in</strong> the event of<br />
early-life damage caused by overload<strong>in</strong>g<br />
Innovative extended formulations<br />
<strong>Lafarge</strong> Cement’s <strong>in</strong>novative formulations us<strong>in</strong>g quality cementitious extenders provide customers<br />
with all-round benefits:<br />
• Assist contractors <strong>in</strong> meet<strong>in</strong>g the <strong>in</strong>creas<strong>in</strong>gly common and str<strong>in</strong>gent environmental<br />
specifications <strong>in</strong> construction tenders<br />
• The extenders react chemically with traditional materials enhanc<strong>in</strong>g the strength and<br />
durability of the f<strong>in</strong>ished product<br />
Strength<br />
• RoadCem achieves strengths at 7 days >16,0MPa (megapascals) and at 28 days >32,5MPa,<br />
as required for this class of general purpose cement <strong>in</strong> accordance with the regulated<br />
standard SANS EN 50197-1<br />
• Buildcrete complies with the requirement <strong>in</strong> the SANS specifications for a m<strong>in</strong>imum<br />
compressive strength >32,5MPa (EN prism test us<strong>in</strong>g a water/cement ratio of 0,5) with<strong>in</strong> 28<br />
days of cast<strong>in</strong>g. The ‘R’ classification <strong>in</strong>dicates that Buildcrete will achieve an early strength<br />
at 2 days >10,0MPa <strong>in</strong> accordance with the SANS specifications<br />
(An ‘N’ designation refers to a class with ord<strong>in</strong>ary early strength development.)<br />
Performance characteristics<br />
<strong>Lafarge</strong> roadb<strong>in</strong>d<strong>in</strong>g cements are designed to provide optimal solutions for improv<strong>in</strong>g the eng<strong>in</strong>eer<strong>in</strong>g<br />
properties of soil, giv<strong>in</strong>g the follow<strong>in</strong>g advantages:<br />
• Strength - soil strength and bear<strong>in</strong>g capacity are <strong>in</strong>creased<br />
• Volume stability - controls the swell and shr<strong>in</strong>kage characteristics caused by moisture<br />
changes<br />
• Durability - <strong>in</strong>creases resistance to erosion, weather<strong>in</strong>g or traffic load<strong>in</strong>g<br />
• Modification of clay m<strong>in</strong>erals – enhances the soil strength and bear<strong>in</strong>g capacity<br />
PAGE 4 | LAFARGE | 2012<br />
PAGE 5 | LAFARGE | 2012
LAFARGE<br />
Support services for<br />
road contractors<br />
Mix design<br />
It is essential that soil conditions are evaluated<br />
and all materials are tested <strong>in</strong> order to determ<strong>in</strong>e<br />
the appropriate stabilisation agent to achieve<br />
the specified properties of the stabilised road<br />
e.g. ITS and UCS.<br />
Evaluation of soil<br />
Our Quality Department <strong>South</strong>ern <strong>Africa</strong> (QDSA)<br />
has a fully-fledged soil laboratory where customer<br />
soil evaluations are conducted.<br />
Site <strong>in</strong>spection<br />
Before any order is executed, whether of bulk<br />
or bagged product, <strong>Lafarge</strong> will carry out a site<br />
<strong>in</strong>spection to ensure the delivery and offload<strong>in</strong>g<br />
can be done safely.<br />
Delivery options<br />
Our delivery service aims to meet the needs of<br />
any road project:<br />
• RoadCem is delivered by bulk tanker with<br />
the option of a spread<strong>in</strong>g service, or <strong>in</strong><br />
palletised loads of 50kg bags<br />
• Buildcrete is delivered <strong>in</strong> palletised loads<br />
of 50kg bags<br />
• Under our brand name Civilcrete,<br />
Buildcrete is also delivered by bulk tanker<br />
with the option of a spread<strong>in</strong>g service<br />
Load <strong>in</strong>tegrity of BULK deliveries<br />
A vitally important aspect of bulk deliveries is ensur<strong>in</strong>g the <strong>in</strong>tegrity of the<br />
load when it is handed over at the delivery po<strong>in</strong>t. We address this <strong>in</strong> two<br />
ways that re<strong>in</strong>force each other:<br />
• Bulk Tanker Seal<br />
Each load is sealed with a white seal bear<strong>in</strong>g a unique trac<strong>in</strong>g<br />
number that appears on the delivery note. The delivery note<br />
states comprehensive details of the order and product identity.<br />
• Bulk Product Identification Tag<br />
For easy identification of your <strong>Lafarge</strong> bulk cement delivery we have a<br />
system that requires all discharge valves on our road tankers to carry<br />
a colour coded and descriptive Product Identification Tag.<br />
Our Tags will allow the road construction<br />
contractor’s personnel to quickly and<br />
easily reassure themselves that they have<br />
the correct product for that section of<br />
road.<br />
CEM IV/B-V 32,5R<br />
General Purpose Cement<br />
Please note:<br />
The <strong>Lafarge</strong> Product Identification Tags are <strong>in</strong>tended to help customers<br />
conveniently and efficiently handle bulk tankers on site. The tags do not<br />
represent a product guarantee. A secure, unbroken white Bulk Tanker Seal<br />
is the guarantee of the <strong>in</strong>tegrity of the load.<br />
PAGE 6 | LAFARGE | 2012<br />
PAGE 7 | LAFARGE | 2012
LAFARGE<br />
Bagged product<br />
deliveries<br />
What the bag marks tell you:<br />
RoadCem and Buildcrete - <strong>Lafarge</strong> brands<br />
of roadb<strong>in</strong>d<strong>in</strong>g cements, with a low carbon<br />
footpr<strong>in</strong>ts:<br />
• 32,5N<br />
achieves a strength of at least 32,5MPa<br />
at 28 days under standard test<br />
conditions<br />
• LOA number<br />
<strong>Lafarge</strong> is authorised to sell RoadCem<br />
and Buildcrete <strong>in</strong> the <strong>South</strong> <strong>Africa</strong>n<br />
market as it more than meet the<br />
necessary regulatory requirements.<br />
It is mandatory to display a Letter of<br />
Authority (LOA) number on a bag of<br />
cement and on the sale transaction<br />
documentation<br />
• SABS mark<br />
Indicates that RoadCem and Buildcrete<br />
comply with the compulsory standard<br />
<strong>in</strong> the SANS 50197 (EN 197)<br />
specifications. Although display<strong>in</strong>g the<br />
SABS mark is no longer mandatory,<br />
<strong>Lafarge</strong> Cement voluntarily displays it<br />
• e-mark<br />
Indicates that the packag<strong>in</strong>g equipment<br />
and systems at our Lichtenburg Cement<br />
Works have been audited and approved<br />
by the NRCS and comply with the<br />
SANS 1841 standard. Our customers<br />
are assured of receiv<strong>in</strong>g the quantity for<br />
which they have paid<br />
Car<strong>in</strong>g for the<br />
environment<br />
<strong>Lafarge</strong> Cement believes that it has a responsibility<br />
to use raw material resources wisely and <strong>in</strong> the<br />
most environmentally-friendly way possible.<br />
Every ton of cement replaced by cementitious<br />
extenders such as fly ash and slag reduces energy<br />
consumption <strong>in</strong> cement manufacture and preserves<br />
non-renewable m<strong>in</strong>eral resources.<br />
<strong>Lafarge</strong> Cement was the first company <strong>in</strong><br />
<strong>South</strong> <strong>Africa</strong> to offer customers a full range of<br />
extended environmentally-friendly cements, with<br />
lower carbon footpr<strong>in</strong>ts.<br />
Cementitious extenders<br />
and the environment:<br />
Fly ash and slag are environmentally-friendly<br />
products. <strong>Lafarge</strong> Cement’s <strong>in</strong>novative use of<br />
cementitious extenders as a component of build<strong>in</strong>g<br />
materials is mak<strong>in</strong>g a significant contribution to<br />
susta<strong>in</strong>able development by:<br />
• Reduc<strong>in</strong>g the use of non-renewable<br />
resources<br />
• Reduc<strong>in</strong>g carbon dioxide emissions from<br />
cement plants<br />
• Recycl<strong>in</strong>g by-products of coal burn<strong>in</strong>g<br />
power stations and blast furnaces, which<br />
cuts back on the landfill sites<br />
Green Build<strong>in</strong>g Council<br />
<strong>Lafarge</strong> Cement was the first member of the build<strong>in</strong>g<br />
materials <strong>in</strong>dustry to jo<strong>in</strong> the Green Build<strong>in</strong>g Council<br />
of <strong>South</strong> <strong>Africa</strong> (GBCSA). It is a commitment to<br />
assist the Council <strong>in</strong> lead<strong>in</strong>g the transformation of<br />
the <strong>South</strong> <strong>Africa</strong>n property <strong>in</strong>dustry to ensure that<br />
all build<strong>in</strong>gs are designed, built and operated <strong>in</strong><br />
an environmentally susta<strong>in</strong>able way. The aim is to<br />
allow all people <strong>in</strong> our country to work and live <strong>in</strong><br />
healthy, efficient and productive environments.<br />
PAGE 8 | LAFARGE | 2012 PAGE 9 | LAFARGE | 2009
LAFARGE<br />
About <strong>Lafarge</strong> <strong>in</strong><br />
<strong>South</strong> <strong>Africa</strong><br />
<strong>Lafarge</strong> is a lead<strong>in</strong>g supplier of build<strong>in</strong>g materials<br />
to the <strong>South</strong> <strong>Africa</strong>n construction <strong>in</strong>dustry through<br />
its two ma<strong>in</strong> operat<strong>in</strong>g companies:<br />
• <strong>Lafarge</strong> Industries <strong>South</strong> <strong>Africa</strong> (Pty) Ltd,<br />
(which <strong>in</strong>cludes the cement, readymix<br />
concrete and the gypsum-plasterboard<br />
operations)<br />
• <strong>Lafarge</strong> M<strong>in</strong><strong>in</strong>g <strong>South</strong> <strong>Africa</strong> (Pty)<br />
Ltd (which covers the aggregate and<br />
limestone quarry<strong>in</strong>g <strong>in</strong>terests).<br />
SAFETY WHEN HANDLING CEMENT<br />
Before start<strong>in</strong>g any job, make safety the<br />
first step <strong>in</strong> your plann<strong>in</strong>g.<br />
Cement is such a commonly available product that many people use<br />
it without giv<strong>in</strong>g any thought to personal protection. It is important<br />
to take sensible handl<strong>in</strong>g precautions:<br />
• Always wear protective cloth<strong>in</strong>g, boots, gloves and safety glasses<br />
• Wash cement off sk<strong>in</strong> immediately with water and mild soap<br />
• Thoroughly r<strong>in</strong>se any cement <strong>in</strong> eyes with water and seek<br />
medical attention if irritation persists<br />
• Keep a straight back and bend at the knees when lift<strong>in</strong>g bags of<br />
cement<br />
The companies trade as <strong>Lafarge</strong> Cement, <strong>Lafarge</strong><br />
Aggregates, <strong>Lafarge</strong> Readymix and <strong>Lafarge</strong> Gypsum.<br />
Right Way<br />
WRONG Way<br />
Technical resources<br />
<strong>Lafarge</strong> roadb<strong>in</strong>d<strong>in</strong>g cements are fully supported<br />
by the unique technical and laboratory resources<br />
of Quality Department <strong>South</strong>ern <strong>Africa</strong> (QDSA)<br />
at Industria, Gauteng. QDSA operates one of the<br />
largest and most respected SANAS (<strong>South</strong> <strong>Africa</strong>n<br />
National Accreditation System) Accredited Civil<br />
Eng<strong>in</strong>eer<strong>in</strong>g test<strong>in</strong>g facilities <strong>in</strong> <strong>South</strong> <strong>Africa</strong>.<br />
Comply<strong>in</strong>g with ISO/IEC 17025, the facility has<br />
a proud sixteen-year track record of cont<strong>in</strong>uous<br />
accreditation.<br />
Scope of QDSA’s Accreditation<br />
The SANAS accreditation covers thirty-five<br />
test methods, <strong>in</strong>clud<strong>in</strong>g all the SANS EN<br />
tests for Common and Masonry cements,<br />
other relevant SANS, EN and DIN test<br />
methods for aggregates and concrete, as well<br />
as an <strong>in</strong>-house method for Dense Medium<br />
Separation. With<strong>in</strong> the framework of this<br />
accreditation, QDSA can add another 200<br />
tests to the above methods.<br />
For further <strong>in</strong>formation, Safety Data sheets are available from:<br />
• Your local build<strong>in</strong>g materials supplier<br />
• <strong>Lafarge</strong> Cement Customer Care: 011 657 1010<br />
• <strong>Lafarge</strong> website: www.lafarge.co.za<br />
THE INTERNATIONAL<br />
LAFARGE GROUP<br />
<strong>Lafarge</strong> is the world-leader <strong>in</strong> build<strong>in</strong>g materials, with top-rank<strong>in</strong>g<br />
positions <strong>in</strong> its Cement, Aggregates & Concrete bus<strong>in</strong>esses. The Group<br />
has 68 000 employees <strong>in</strong> 64 countries and, <strong>in</strong> 2011, posted sales of<br />
15,3 billion Euros.<br />
For the second year <strong>in</strong> a row, <strong>Lafarge</strong> ranked amongst the Top 10 of 500<br />
companies evaluated by the “Carbon Disclosure Project” <strong>in</strong> recognition<br />
of their strategy and actions aga<strong>in</strong>st global warm<strong>in</strong>g. With the world’s<br />
lead<strong>in</strong>g build<strong>in</strong>g materials research facility, <strong>Lafarge</strong> places <strong>in</strong>novation<br />
at the heart of its priorities, work<strong>in</strong>g for susta<strong>in</strong>able construction and<br />
architectual creativity.<br />
PAGE 10 | LAFARGE | 2012<br />
PAGE 11 | LAFARGE | 2012
LAFARGE<br />
Lead<strong>in</strong>g through <strong>in</strong>novation<br />
<strong>Lafarge</strong> has cont<strong>in</strong>ually <strong>in</strong>vested <strong>in</strong> the better<br />
understand<strong>in</strong>g of cement and <strong>in</strong> advanc<strong>in</strong>g<br />
the development of build<strong>in</strong>g materials. It<br />
offers the construction <strong>in</strong>dustry and the<br />
general public <strong>in</strong>novative solutions br<strong>in</strong>g<strong>in</strong>g<br />
greater safety, comfort and quality to their<br />
everyday surround<strong>in</strong>gs.<br />
Additional <strong>in</strong>formation is available on the<br />
website at: www.lafarge.co.za<br />
Order<strong>in</strong>g<br />
made easy<br />
If you have registered to use the <strong>Lafarge</strong><br />
Customer Portal, order<strong>in</strong>g cement can be<br />
done at your convenience, 24 hours a day,<br />
365 days a year.<br />
For further <strong>in</strong>formation or to register to use<br />
our Customer Portal, please contact:<br />
• Your local <strong>Lafarge</strong> Sales Representative<br />
• Customer Care: 011 657 1010 or<br />
• Download an Application form from our<br />
website: www.lafarge.co.za<br />
FOR ALL YOUR ROADBINDING CEMENT<br />
QUERIES PHONE:<br />
Toll Free: 0860 109 275<br />
Call Centre: 011 657 1111<br />
Customer Care: 011 657 1010<br />
PAGE 12 | LAFARGE | 2012<br />
PAGE 13 | LAFARGE | 2012
<strong>Lafarge</strong> Industries <strong>South</strong> <strong>Africa</strong> (Pty) Ltd<br />
35 Westfield Road<br />
Longmeadow Bus<strong>in</strong>ess Estate Ext 11, Edenvale, 1609<br />
Tel no.: 0860 LAFARG / 0860 523 274<br />
or 0861 LAFARG / 0861 523 274<br />
Ma<strong>in</strong> fax no.: 086 631 0006<br />
www.lafarge.co.za