KOSTER IN 3 Injection Resin
Polyurethane injection resin for structural rebonding
Technical guideline / Article number 6.15
Issued: January 30, 2013
Features:
KOSTER IN 3 is a solvent-free polyurethane
injection resin for crack injection. Due to its high
compressive and adhesive tensile strength,
KOSTER IN 3 permanently seals and bridges cracks
and joints where structural rebonding is required. It
is a 2 component system. Once the A and B
component are mixed together, the curing begins.
Water is not needed for the reaction.
Technical Data:
Viscosity (A + B component)
approx. 300 cps
Pot life (68 °F, 1 L mixture)
40 min
Density (of the mixture)
approx. 9.18 lb/gal
Application temperature
above + 59 °F
Compressive strength
> 11,600 psi
Adhesive tensile strength (concrete)
> 290 psi
Flexural tensile strength (after 7 d / 73 °F / 65% RH)
approx. 1740 psi
Mixing ratio (by weight) Component A : B
(1 : 1)
Mixing ratio (by volume) Component A : B (1.2 : 1)
is + 59 °F. Ideally the material should be brought up
to a temperature of + 59 °F before mixing and
injection. Temperatures above + 77 °F will increase
the reaction rate and reduce the pot life. The mixture
can be applied using conventional single component
injection pumps such as the electrical KOSTER 1C
Injection Pump. Prior to the injection, the cracks can
be sealed using KOSTER KB-Fix 5. Holes are drilled
on alternating sides along the course of the crack at
an interval of approx. 4 – 6 inches. Injection packers
are inserted into the holes and (when possible)
injected from bottom to top. The diameter of the drill
holes depends on the injection packers chosen.
After the removal of the injection packers, the drill
holes can be sealed with KOSTER KB-Fix 5.
Regaining structural strength requires that the crack
flanks have sufficient bonding characteristics to
achieve good adherence. Injection foams and bond
inhibiting substances can reduce the strength of the
system. When questioning the strength of the bond,
test injections are to be done and core samples
analysed to determine the bond to the crack flanks.
Use:
KOSTER IN 3 can be used in combination with
KOSTER IN 1 for the permanent, sealing, bridging,
and structural rebonding of dry and water bearing
cracks and joints in concrete, screeds, masonry etc.
as well as for solidifying granular soils. It can be
used without the pre-injection of KOSTER IN 1 for
closing dry cracks, joints and voids. KOSTER IN 3 is
used in cases where crack flanks or unequal
structural members have to be bonded together and
achieve structural stability.
Mixing:
The A and the B component are recommended to be
mixed at + 59 °F in the above stated mixing ratio
using a slowly rotating electrical mixer preferably
equipped with a KOSTER Resin Stirrer. The material
must be mixed until it is streak free and
homogeneous in appearance and consistency.
Installation:
The ready mixed material must be used within the
given pot life. The minimum application temperature
Coverage:
Approx. 1 gallon / gallon void
Cleaning of Tools:
Clean tools immediately after use with KOSTER KBPur Cleaner.
Packaging:
1.92 gal
Storage:
Store the material at temperatures between + 50 °F
and + 86 °F. In originally sealed packages, the
material can be stored for 12 months.
Safety:
Wear protective gloves and goggles when
processing the material. When carrying out injection
work, make sure to protect the surrounding work
area from injection resin that may be discharged
from the wall, packers, drill holes, etc. Do not stand
directly behind the packers during injection.
KOSTER American Corporation ● 2585 Aviator Drive ● Virginia Beach, VA 23453
Tel. 757-425-1206 ● Fax 757-425-9951 ● www.kosterusa.com
Technical Guidelines Cited:
KOSTER KB-Fix 5
KOSTER IN 1
KOSTER KB-Pur Cleaner
KOSTER 1C Injection Pump
KOSTER Resin Stirrer
Art. No. 5.01
Art. No. 6.13
Art. No. 9.10
Art. No. 12.072
Art. No. 12.088
Limited Warranty:
KOSTER warrants that its product shall be in
accordance with the specifications published in the
current revision of the products data sheet. KOSTER
covenants that in the event any of its products fail to
meet their published specifications, KOSTER shall
replace those products proved to be defective.
KOSTER shall not be responsible for any incidental
or consequential damages due to the breach of its
warranties.
Notwithstanding the foregoing,
KOSTER’s sole liability hereunder shall not exceed
the cost of the defective product originally
purchased. EXCEPT AS SET FORTH ABOVE,
KOSTER MAKES NO OTHER WARRANTIES
EXPRESS OR IMPLIED AND MAKES NO
WARRANTY AS TO THE MERCHANTABILITY OR
FITNESS OF THE PRODUCT FOR A PARTICULAR
PURPOSE.
THERE ARE NO WARRANTIES
WHICH EXTEND BEYOND THE DESCRIPTION ON
THE FACE HEREOF. The user must determine if
the product is suited for the intended use and the
user must bear the risks and liabilities associated
with it.
KOSTER American Corporation ● 2585 Aviator Drive ● Virginia Beach, VA 23453
Tel. 757-425-1206 ● Fax 757-425-9951 ● www.kosterusa.com