envisia - boral · for commercially available 40mpa concrete. ^non-as 1379 compliant geopolymer...
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BORAL CONCRETEBuild something great™
ENVISIA® TECHNICAL DATA
Punchbowl Mosque, Sydney
LOWER CARBON
HIGH EARLY STRENGTH
LOWER SHRINKAGE
SUPERIOR DURABILITY
ARCHITECTURAL PRESENCE
Green Star Mat-4 Baseline
ENVISIA® (53% reduction)
(2 cement points)
100 200 300 400 500
Source: Concrete strength 40 MPa grade AS 1379
205
kg/m3
PORTLAND CEMENT CONTENT
440
EMBODIED CARBON CONTENT (kg CO2-e/m3)
Batching, transport, curing & placement
Admixtures & activators
Fine and coarse aggregates
Binder
ENVISIA®*
0 100 200 300 400 500
Geopolymer 100% fly ash^
CO2 equivalent emissions (kg CO2-e/m3)
75% OPC 25% fly ash*
Ordinary portland cement (OPC)*
*AS 1379 compliant concrete source: Typical constituents for commercially available 40MPa concrete.
^Non-AS 1379 compliant geopolymer concrete source: Carbon dioxide equivalent (CO2-e) emissions: a comparison between geopolymer and OPC cement concrete. Turner & Collins, Monash Univ, 2013.
Why ENVISIA® ?
Punchbowl Mosque, Sydney
LOWER CARBON
• ENVISIA® is ideal for Green Star projects due to its reduced portland cement content. Yet it can still be used for post-tensioned slabs or when early stripping is required.
• ENVISIA® is an AS 1379 compliant concrete that offers significant reductions in embodied carbon whilst maintaining high early-age strength.
• ENVISIA® can be placed, pumped and finished like conventional concrete.
30
25
45
20
40
15
35
10
5
0
Source: Field data (early-age strength will vary depending on the ambient temperature).
Based on all mixes containing 50% recycled water and 25% manufactured sand.
EARLY-AGE STRENGTH CHARACTERISTICS: 40MPa CONCRETE
Conventional concrete – 38% OPC reduction (2 points)
Conventional post tensioned concrete – 26% OPC reduction (1 point)
ENVISIA® – 50% OPC reduction (3 points)
0 1 2 3 4 5 6 7 Day
Co
mp
ress
ive
stre
ngth
(MP
a)
STRENGTH PROPERTIES
• ENVISIA® will achieve early-
age strength equivalent to conventional concrete (post-tensioned and precast) despite 50 per cent cement replacement.
• ENVISIA® has 30 per cent greater flexural strength compared to that of the equivalent grade of conventional concrete.
• ENVISIA® is beneficial for industrial slabs, roads and car parks because of its high flexural strength, low shrinkage and high durability.
Hume Highway, NSW
LOWER SHRINKAGE
• ENVISIA® achieves up to 50 per cent reduction in shrinkage when compared to conventional concrete.
• ENVISIA’s® low shrinkage allows for the design of larger slabs with fewer joints.
SHRINKAGE CHARACTERISTICS: 40MPa CONCRETE
Source: Field data. Based on all mixes containing
50% recycled water and 25% manufactured sand.
Conventional concrete – 38% OPC reduction (2 points)
Conventional post-tensioned concrete – 26% OPC reduction (1 point)
ENVISIA® – 50% OPC reduction (3 points)
21 Days
700
600
500
400
300
200
100
0
Dry
ing
shrin
kag
e (m
icro
stra
in)
56 Days
333 George Street, Sydney
Kendrick Cycleway, Sydney
SUPERIOR DURABILITY
• ENVISIA® provides greater protection for reinforcing against steel chloride-induced corrosion.
• ENVISIA’s® ability to resist chloride ingress is superior to conventional marine-grade concrete.
• ENVISIA® has improved sulphate and acid resistance properties.
• ENVISIA® mitigates the potential expansion due to alkali aggregate reactivity.
The Stokehouse, Melbourne
ARCHITECTURAL PRESENCE
• ENVISIA® can achieve a range of architectural benefits because of its off-form finish
and lighter colour.
• ENVISIA’s® lighter
colour will enhance
the use of colour
oxides.
A Safety Data Sheet is available on the Boral website or by contacting Boral customer service. Images in this brochure are only representative of Boral products and the appearance and effect that may be achieved by their use. Particular projects may require the use of specific construction techniques or products. Boral recommends obtaining technical advice prior to construction. Boral, the Boral logo, Build something great are trade marks or registered trade marks of Boral Limited in Australia. Copyright Boral Construction Materials Limited ACN 000 614 826. BCC_16607 7/19.The Stokehouse, Melbourne
www.boral.com.au/envisiaTo view our technical papers and find out more visit: