Concrete Blended Cement Concrete

7/29/2019 Concrete Blended Cement Concrete

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Y ft cc tty, pc tty





Making cement is energy

intensive, generating up to

176kg CO2

or each tonne

o concrete manuactured.

Because blended cement

concrete contains

signifcantly less CEM I

than traditional concrete,

it’s considerably more

environmentally riendly. The

reduction in greenhouse gas

emissions can be as high as

40 per cent, depending on

the mix and application.

This is reected in improved

Ecopoints scores (see

table), which are helping

contractors around the UK

to meet the tough conditions

o tender documents and

win new business. Indeed,

sustainability is one o the

actors driving the spread o

blended cement concrete

across Europe.

A urther environmental

beneft is that it re-uses

by-products rom other

industries. Fly ash is

captured rom coal power

stations, while GGBS is a

by-product o the iron and

steel industry. (Blended

cement concrete with GGBS

has a greater environmental

beneft because a larger

proportion o cement tendsto be replaced – typically

50% vs 30%.)

4/05

ended cement concrete is a lower carbon building material, with up40 per cent less embodied carbon. Its Ecopoints score and Green

ide rating is also better than standard concrete, allowing you to meet

reasingly tough sustainability requirements and win new business.the concrete you need to improve the built environment whilst

sening your impact on the natural one.

irsT orsusTainabiliTY

Readymix concrete

specication

Ecopoint benets vs

CEM I

GEN 1 (S2) & GEN 1 (S3) 30% y-ash mix + 9%

50% GGBS mix + 19%

RC30 30% y-ash mix + 10%

50% GGBS mix + 22%

RC35 30% y-ash mix + 10%

50% GGBS mix + 22%

RC40 30% y-ash mix + 11%

50% GGBS mix + 23%

Blended cement concrete helps

contractors meet increasingly

toUgh sUstainaBility criteria.



6/07

Blended cement concretes are great to work with. You’ll fnd them

easier to handle, pump and place with precision – even in adverse weather conditions. And their chemical composition reduces the risk

o problems and unwanted chemical reactions.

irsT orworkabiliTY

he working properties of

lended cement concrete

elp to make amBitioUs

rojects like canary wharf

ndergroUnd station viaBle.

yoUr Best protection

against aggressive chemical

conditions in the groUnd.

Improvedhandling• Less water required or a

given workability

• Better pumping properties

due to increased cohesiono the mix

• Easier to compact

Enhancedworking window• Longer setting time means more

time or getting the right fnish

• Helps you avoid cold joints,

a major beneft or large or massconcrete pours

Chemicaleatures• Less ree lime content reduces

permeability and promotes long-

term strength

• Reduced alkalinity o concrete

minimises risk o alkali-silica

reaction

• Lower heat o hydration reduces

risk o early-age thermal

cracking



8/09

Blended cement concretes give exceptional results. They’re more resistant

to sulates, chlorides and acids, so your structures will perorm even in the

chemically aggressive conditions becoming prevalent around the UK. Andthey continue developing strength over the weeks and months ater setting,

resulting in a superior ultimate strength.

irsT orsTrengTh

lended cement concrete’s

Uperior strength creates

conic strUctUres that will

ast decades.

yoUr Best protection

against aggressive chemical

conditions in the groUnd.

Enhancedchemicalprotection• Reduced threat o sulate

attack, an increasingproblem around the UK

as more brownfeld sites

are developed

• Improved resistance to

chlorides, a particular

problem or marine

construction or buildings near

to the sea or vehicle routes

where de-icing salt is used

• Better protection or steel

reinorcement

Age (days)

S t r e n g t h g a i n ( % )

CEM I

Fly-ash

GGBS

Superior fnalstrengthBlended cement concrete

develops strength more slowly

than traditional concrete due to

slower early hydration, but carrieson developing strength over the

weeks and months ater setting.

This results in a superior fnal

strength compared to traditional

concretes.

Improvedaesthetics• Superior surace fnish

• Lighter or darker colour

depending on whether GGBS

or y ash is used

Reducedpermeability• Increased durability

• More protection rom wetting,

drying, reezing and thawing



0/11

ere’s a blended cement concrete solution that will help meet theallenges o any large-scale construction project. By varying the

ments in the mix and their proportions, we can help you speciy ancrete that perectly matches the requirements o your next project.

irsT orversaTiliTY

Blended cement concretes

are a diverse amily o

building materials, and it’s

important to determine the

right specifcations or your

project. Our experts will

work closely with you to help

you harness their versatility.

We oer a exible solution-

based service, designing,

manuacturing and delivering

a huge range o blended

cement concretes to our

customers including our

agship high-perormance

concrete brand, Evolution.

www.cemex.co.uk/evolution

Our experts will help you to nd the mix and grade o concrete

right or you – or instance, fy-ash or GGBS?

f ggBs

Where it comes rom

By-product rom coalfred power station thatwould otherwise goto landfll

By-product o iron-making process thatwould otherwise goto landfll

Final appearance

o concreteGen er al ly da rker Ge ne ra ll y l ig ht er

Compatible with

admixtures? Yes Yes

Need to cure? Yes Yes

Sulate protection? a aa

More cohesive?* a ahere’s a Blended cement

oncrete for virtUally any

pplication and finish.

a more advanced cementitioUs

offering from cemeX is the key

to more profitaBle concrete

solUtions.

* Due to the materials slower reactivity, power oating timesmay be marginally extended, particularly in cold weather



2/13

From our international R&D acility in Switzerland, to our links with universities

and centres o excellence worldwide, CEMEX continually invests in innovation. At our National Technical Centre in Warwickshire, we don’t only develop

cutting-edge services and solutions, we also have a dedicated team in

place, ready to share its unrivalled expertise in blended cement concretesand other CEMEX products. The National Technical Centre also holds UKAS

accreditation in 53 British and European Standard test procedures, ensuringour lead in the race or excellence in the heavy building materials market today.

beneiT romThe CemeX

neTwork

TotalinormationKnowledge is success

– that’s why we strive

to keep you inormed at

all times, with delivery

inormation and telephone

support. We also deliver

streamlined electronic back-

ofce support to minimise

queries and maximise

transparency, and complete

technical inormation and

case studies to help you

plan with confdence.

ConsistentqualityCEMEX guarantees

consistent quality, meaning

you can be 100% confdent

our concretes will perorm

as needed. We also

manuacture our own

cement, admixtures, y-ash

and GGBS, and can draw

on an unparalleled network

to source more. That means

we have unique control over

our concrete supply chain

and can help you maintain

continuity o supply, even

when materials are in

short supply.

WatertightogisticsEMEX has the nationwide

ale, presence and

sources to get the right

mounts o the right

ecifcation concrete

you at the right times,

herever you’re working.

ur size and resources

ow us to ex our supply

meet any requirements,

th round-the-clock service

d delivery.

pt ct

t.cxct.c.

oUr nationwide delivery network

always meets yoUr needs on time

Comprehensivecement supply

In addition

to concrete,

CEMEX

oers a wide range o high-

quality cementitious solutions

including sustainable blended

cements. Our CEM 2 cement

uses y ash, reducing CO2

by up to 25% per tonne

produced. Our CEM 3 cement

uses by-products rom the

steel industry, reducing CO2

by up to 45% per tonne. We

also harness innovation to

improve the efciency o our

cement logistics.



4/15

EMEX aims to be a positive orce wherever we work, and we

e committed to sustainable operations across our business. Our losophy is to actively engage with all the communities we serve, and

nvest in a wide range o sustainability-related charities and initiativeshe UK and worldwide.

saeTY andsusTainabiliTYn all we do

mbracingstainablevelopmentEX is committed to

inability, both because it is

ght thing to do and because

ustainable approach will

us to achieve our business

. For example, it will allow

continue as the preerred

ier to the industry, to drive

er efciencies, and to protect

term resources. As part

r commitment to social,

onmental and economic

nsibility, we seek to:

duce emissions

rove efciency o production

logistics

• Develop innovative products and

services

• Engage with our employees

• Increase transparent dialogue

with stakeholders

• Measure and control impacts

• Contribute to sustainable

communities

Find out more about CEMEX and

sustainability at

www.cemex.co.uk/sustainability

Taking healthand saetyseriouslyCEMEX has global and UK

policies designed to help us

achieve our simple saety target:

zero injuries. We are committed

to promoting the wellbeing o our

employees, and are engaged in

a number o external initiatives

to improve public saety and

awareness.

CEMEX takes every step toensure our products are sae to

transport, store, handle, use and

dispose o. We publish a range o

saety sheets outlining the main

hazards and precautions that

should be taken when handling

our products.

You can download these rom

www.cemex.co.uk/productsaety



AboutCEMEX CEMEX is one o the

world’s leading providers

o building materials including

eady-mixed concrete,

aggregates, cement and

asphalt. Our annual sales in

over 50 countries are over

$23 billion.

n the UK, we invest to develop

advanced products and

services while promoting asustainable uture. Take our

new £30m production plant

n Tilbury, built to serve the

ast-developing yet congested

South East. Or the act that we

plant more than 30,000 trees

over 95 hectares nationwide,

every year.

To fnd out more about our

blended cement concretes

and other solutions or the

building industry, visit

www.cemex.co.uk/readymix

or call the CEMEX Helpline

on 0800 667827.

Documents

Concrete Blended Cement Concrete