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Product Description
:
Stanrose® Micro Concrete
is a ready to use dry powder which requires only addition of clean
water at site to produce a free flowing non shrink repair micro
concrete. It is composed of good quality cement, properly selected
aggregates & additives. It is used & designed for repairing of
damaged reinforced concrete elements like columns, beams &
structure where the areas are restricted or not easily accessible
for proper placement of concrete using vibrator.
Stanrose® Micro Concrete
has excellent flowability, workability & proper particle size to
reach small & congested reinforcement.
Areas of Application :
●
Repair of damaged
reinforced concrete elements like beams, columns, wall, etc. where
access is restricted and compaction is not possible.
●
For jacketing of
RCC columns to increase load-taking capacity (strengthening of a
vertical members)
Features & Benefits :
●
Pumpable -
Can be pumped or poured into restricted locations.
●
Flowable -
Flowable mortar hence does not require compaction.
●
Shrinkage Compensation ?
Controlled expansion system which compensates for shrinkage and
settlement in the plastic state.
●
Strength -
Develops high initial and ultimate compressive strength.
●
Moisture Resistant -
Offers excellent resistance to moisture ingress.
●
Durability -
Makes repaired sections highly durable & compatible to parent
concrete.
●
Thickness build up -
Can be applied at 100 mm thickness at one stroke
●
Early reinstatement -Rapid
strength gain helps in early reinstatement & removal of
shuttering.
Method of Application :
1. Surface Preparation
●
Clean the surface and remove loose concrete, dust, oil, paint,
grease, waterproof coating, etc.
●
Expose fully any corroded steel in the repair area and remove all
scale and corrosion deposits. Light shot blasting is highly
recommended. Apply Stanrose Rust Remover for rust free bars.
●
Apply Stanrose Epoxy Zinc Primer over the cleaned re-bars and
allow it to dry before pouring of
Stanrose®
Micro Concrete.
●
Saturate the substrate with water to prevent absorption of water
from the mixed material.
●
For a dry substrate, it should be primed by applying one coat of
Stanrose Epoxy Bonding Agent / Stanrose® Concrete Super Bond. Allow
the bonding agent to reach tacky condition before pouring of
Stanrose®
Micro Concrete.
2. Mixing
●
Use PAN Mixer for
mixing of
Stanrose®
Micro Concrete.
●
Charge 85-90 % of
clean & potable mixing water (3.75 to 4 liters per 25 kg bag) to a
PAN Mixer.
●
Start addition of
Micro Concrete powder slowly under continuous mixing. Keep mixing
for 2 minutes. Add balance quantity 10 ? 15 % of mixing water &
again mix for another 2-3 minutes to form a homogeneous, free
flowing, uniform & lump-free mix.
3. Application
●
Pour or pump the mixed
Stanrose®
Micro Concrete
into a watertight shuttering.
●
Cure the repaired concrete for minimum 7 days after removing the
shuttering or alternatively use Stanrose® Curing Compound for
curing.
Precautions & limitations :
●
Stanrose® Micro Concrete
can applied in section up to 100 mm depth.
●
For thickness more
than 100 mm, addition of pre-calculated aggregates may be
required. Consult technical team for more details.
●
Strictly follow
water-powder ratio as specified.
●
Ensure that the
shuttering is 100% watertight.
●
Ensure full
exposure of reinforced steel.
●
Consult structural
engineer if the diameter of rebar is reduced by more than 20% of
the original diameter.
●
Replacement or
provision of additional steel shall be done in consultation with
structural consultant.
Technical Information :
|
PROPERTIES |
TEST METHOD |
TYPICAL
VALUES |
|
W/P Ratio |
0.15 -
0.16 |
----- |
Compressive strength @ 30o C
|
ASTM C 109
: 99
|
15 N/mm2
at 1 day
28 N/mm2 at 3 days
40 N/mm2 at 7 days
55 N/mm2 at 28 days |
|
Flexural
Strength @ 30o C |
ASTM C 580 |
6 N/mm2 at
28 days |
|
Tensile
Strength @ 30o C |
ASTM C 307 |
2.5 N/mm2
at 7 days |
|
Expansion |
|
0.45% |
|
Fresh Wet
Density |
|
2200 -
2300 kg /m3 |
Shelf Life
& Storage :
Shelf life is six months from the date of manufacturing. Store at
cool & dry place in unopened condition.
Health &
Safety Precautions :
●
As with all chemical products, caution should always be exercised.
●
Protective clothing such as gloves and goggles should be worn (see
packaging for specific instructions).
●
Treat any contact to the skin or eyes with fresh water
immediately.
●
Should any of the products be accidentally swallowed, do not
induce vomiting but call for medical assistance immediately. |
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