Conveying raw slag
High blaine GGBS/GGBFS
Granulated Blastfurnace Slag (GGBS)
EnGro is the pioneer and leading manufacturer of Ground Granulated
Blastfurnace Slag (GGBS). In North Asia alone, we currently produce over
1.7 million tons of GGBS annually.
Granulated Blastfurnace Slag (GGBS or GGBFS) is obtained by quenching
molten iron blastfurnace slag (a by-product of iron and steel making)
in water or stream, to produce a glassy granular product that is then
dried and ground into a fine powder.
intensive research and development, we developed a patented high-pressure
roller press process that ensures high fineness, high reactivity, good
particle size distribution, and quality consistency. With state-of-art
processing equipment, the physical and chemical properties of GGBS/GGBFS
are continuously monitored and controlled during manufacture to ensure
that the finished product complies with national and international standards
(e.g. GB/T 18046, KS F 2563, BS 6699 and ASTM C989).
GGBS/GGBFS is a green construction material used to make durable concrete
structures in combination with Ordinary Portland Cement (OPC) and/or other
pozzolanic materials. GGBS/GGBFS has been widely used in Europe, and increasingly
in the United States and in Asia (particularly in Japan and Singapore)
for its superiority in concrete durability, extending the lifespan of
buildings from fifty years to a hundred years.
major uses of GGBS/GGBFS are:
||In the production
of quality-improved slag cement, namely Portland Blastfurnace cement
(PBFC) and High Slag Blastfurnace cement (HSBFC), with GGBS/GGBFS
content ranging typically from 30-70%; and
||In the production
of ready-mixed or site-batched durable concrete. The technical benefits,
which GGBS/GGBFS imparts to concrete, include:
- Better workability,
making placing and compaction easier,
- Lower temperature
rise, reducing the risk of thermal cracking in massive concrete
of the risk of damages caused by Alkali-silica Reaction (ASR),
- High resistance
to chloride ingress, reducing the risk of reinforcement corrosion,
- High resistance
to attacks by sulphate and other chemicals.
The use of GGBS/GGBFS
substitutes Portland cement by 30-70%. Manufacturing of Portland cement
is a major contributor of greenhouse gases, responsible for about 5% of
all global carbon dioxide emissions. By comparison, manufacturing of GGBS/GGBFS
requires less than a fifth the energy and produces less than a tenth of
the carbon dioxide emissions. This is in line with the Group's commitment
towards a green environment.
Slag Blastfurnace Cement (HSBFC)
High Slag Blastfurnace Cement
(HSBFC), our high performance specialty cement, is a homogeneous blend
of Ordinary Portland cement (OPC) and Ground Granulated Blastfurnace Slag
(GGBS/GGBFS) complying with BS 4246, SS 476, DIN 1164, JIS R5211, and
ASTM C595. Its use is well established in the construction industry in
producing durable concrete. HSBFC is designed to ensure consistent slag
content and to enhance concrete performance.
of using HSBFC
the risk of early-age thermal cracking especially in mass concreting;
the resistance to sulphate and chloride attacks of concrete, especially
for marine structures;
the risk of damage caused by Alkali-silica Reaction (ASR) in concrete;
long-term strength development of concrete.
possesses other features such as good workability, prolonged slump retention,
higher ultimate compressive strength and higher flexural strength. The
more aesthetically pleasing appearance of lighter colour in HSBFC concrete
can soften the visual impact of large structures.
uses of HSBFC
With the superior characteristics over OPC and Sulphate-resisting cement
(SRC), HSBFC is highly recommended for use in the following areas:
or sub-structure works
reservoirs and hydro-electric projects
such as piles in soils containing sulphates/chlorides
pre-cast/in-situ-placing concrete structures such as tunnels
concrete structures such as transfer beams
Our comprehensive range of Smart products have established
our reputation as a provider of innovative, end-to-end solutions for the
construction industry both locally and overseas in countries such as China
Smart Product Range
An integral waterproofing product, added to both structural and precast
concrete structures during mixing.
A hydroswelling waterstop used to effectively seal construction joints.
A liquid-applied, flexible waterproofing membrane, SmartFlex is a unique
blend of cement and polymers.
A dry shake mortar used to provide a durable, hard surface to concrete
A polymer-based cementatious coating used to resurface concrete floors.
A cement-based, polymer-modified joint adhesive for lightweight blocks.
A self-levelling compound that provides a new wearing surface on top of
A cement-based skimcoat used on smoother wall surfaces. Mixed on-site,
SmartCote gives a superior finish to that of regular cement plaster.
A fast-setting mortar for urgent repair of concrete roads and floors.
Smart NS Grout
A non-shrink grout which is widely used in both public and private projects.
A cementatious tile adhesive which is suitable for both interior and exterior
A polymer modified mortar used to repair concrete structures.