1. XTRAMIX CONCRETE
SOLUTIONS
XTRAMIX IS ONE OF THE BEST
CONCRETE MANUFACTURER IN THE
WORLD RECOGNISED BY ITS
QUALITY OF MIXING AND STRENGH
OF CONCRETE SOLUTION
3. REGULAR CONCRETE/REINFORCED
CONCRETE
Regular concrete is the lay term
describing concrete that is
produced by following the mixing
instructions that are commonly
published on packets of cement,
typically using sand or other
common material as aggregate,
and often mixed in improvised
containers.
4. HIGH-STRENGTHCONCRETE
High-strength concrete is concrete with a compressive strength generally greater than
6,000 pounds/square inch (40 MPa). High-strength concrete is made by lowering the
water-cement (w/c) ratio to 0.40 or lower. Often silica fume is added to prevent the
formation of free calcium hydroxide crystals in the cement matrix, which might reduce the
5. SELF COMPACTING
CONCRETE
During the 1980s a number of countries
including Japan, Sweden and France
developed concretes that are self-compacting.
These self-compacting concretes (SCCs) are
characterized by:
Extreme fluidity as measured by flow,
typically between 700-750 mm, rather than
slump
No need for vibrators to compact the
concrete
Placement is simpler
No bleed water, or aggregate segregation
No need for a viscosity modifying agent
(VMA)
SCC can save up to 50% in labor costs
due to 80% faster pouring and reduced
wear and tear on formwork.
6. SHOTCRETE
Shotcrete uses compressed air to shoot
(cast) concrete onto (or into) a frame or
structure.
Shotcrete is frequently used against
vertical soil or rock surfaces, as it
eliminates the need for formwork.
It is sometimes used for rock support,
especially in tunnelling.
Today there are two application
methods for shotcrete: the dry-mix and
the wet-mix procedure.
In dry-mix the dry mixture of cement
and aggregate is filled into the machine
and conveyed with compressed air
through the hoses.
7. DURABLE / HIGH PERFORMANCE CONCRETE
A durable concrete is one that performs satisfactorily in the working environment during its
anticipated service life. The materials and mix proportions specified and used should be
such as to maintain its integrity and, if applicable, to protect embedded metal from
corrosion.
8. QUICK SETTING CONCRETE
A quick setting concrete needs a specific
kind of cement named rapid cement which
accelerates the setting and lets the
concrete harden quickly, if this type of
cement is not available, there is chemical
admixture can do the same role of this
cement and let the concrete harden in the
initial phase in 2 to 3 hours and in the final
stage in 4 to 5 hours.
We mostly use accelerator admixture to
attain this type of concrete.
