Installation Instructions
INSTANT PATCHING CEMENT
2025 Centre Pointe Blvd, Suite 300, Mendota Heights, MN 55120 | P 651.688.9116 | F 651.688.9164 | www.tccmaterials.com
High-performance, crack filling, and repairing cement
©AKONA MANUFACTURING, LLC, A TCC Materials Company • January 2018• Version 4.0
PRODUCT DESCRIPTION
Akona
®
Instant Patching Cement is a high
-performance cement used for wide crack
filling and other concrete and masonry
repair needs. It sets rock hard in just 90
minutes. Instant Patching Cement self-
bonds to all properly prepared concrete
surfaces and develops twice the strength
of ordinary concrete. For repairs from ⅛
in. (3 mm) to 1 in. (25 mm) per application
neat, and can be extended to a maximum
of 5 in. (127 mm). Mix with water or for
additional strength and adhesion, mix with
Akona Concrete Bonding Additive (sold
separately).
WHEN/WHERE TO USE
Interior and exterior repairs
Steps, sidewalks, slabs, patios, and
driveways
Walls and floors
ADVANTAGES
Fast, controlled set
High strength
Ideal for deep repairs
Mix with water or bonding additive
AVAILABLE SIZE
10 lb. (4.5 kg) bag (BOM # 102632)
COVERAGE
10 lb. bag fills a 1 in. wide x ½ in. deep
x 30 ft. long crack (2.5 cm x 1.3 cm x
9.4 m), or 10 sq. ft. (0.9 m
3
) at ⅛ in. (0.3
cm) thickness
10 lb. bag yields approximately 0.09 cu.
ft. (.003 m3) of mortar (neat)
TECHNICAL DATA
Applicable Standards:
ASTM C109/C109M Standard Test
Method for Compressive Strength of
Hydraulic Cement Mortars (Using 2 in.
[50 mm] Cube Specimens)
ASTM C157-C157M Standard Test
Method for Length Change of Hardened
Hydraulic-Cement, Mortar, and
Concrete.
ASTM C191 Standard Test Method for
Time of Setting of Hydraulic Cement by
Vicat Needle.
ASTM C882 Standard Test Method for
Bond Strength of Epoxy Resin Systems
used with Concrete by Slant Shear.
ASTM C928 Standard Specification for
Packaged, Dry, Rapid-Hardening
Cementitious Materials for Concrete
Repairs.
Meets or exceeds the compressive
strength requirements of ASTM C387 for
high strength mortars.
Note: Test results obtained under controlled laboratory
conditions at 72°F (22°C) and 50% relative humidity.
Reasonable variations can occur due to atmospheric
and job site conditions.
PREPARATION
Read all directions before starting work.
Proper surface preparation is crucial to
achieving a successful application.
1. Remove all loose or unsound materials
including previous patching materials.
Thoroughly clean surface of dirt, dust,
grease, paint, or other contaminants
before patching, topping, or placing
overlays.
2. Holes should be chipped out creating a
new substrate to ensure proper bond
adhesion.
3. When reinforcing steel is present, it
must be free of rust. Mechanical
abrasion or abrasive blasting should be
used to remove rust from reinforcing
steel
4. Large overhead or vertical patches
deeper than 2 in. (51 mm) should
contain reinforcing steel. New steel
should be inserted using appropriate
techniques of none is present..
5. Just prior to application, pre-dampen
surface to be repaired with clean
water to saturated surface dry (SSD)
condition with no standing water
remaining.
6. To improve bonding, a “slurry coat” (a
thin soupy mixture of Instant Patching
Cement mixed with water or bonding
additive) can be applied to the pre-
dampened surface just prior to placing
the trowelable mixture. Apply with
gloved hand or brush. Allow the slurry
coat to become tacky, but not fully
dried. Trowel freshly mixed Instant
Patching Cement over the damp slurry
coat and finish as required.
Helpful Items:
Typical Values • Akona Instant Patching
Cement
Mixed with
water
Mixed with
Akona Concrete
Bonding
Additive
Initial Set Time 10 minutes 30 minutes
Final Set Time 15 minutes 45 minutes
Compressive Strength ASTM C109 (air dry)
3 hours
>1,200 psi
(8.3 MPa)
> 900 psi
(6.2 MPa)
24 hours
> 2,000 psi
(13.8 MPa)
> 1,700 psi
(11.7 MPa)
7 days
> 5,500 psi
(37.9 MPa)
> 3,000 psi
(20.7 MPa)
28 days
> 6,500 psi
(44.8 MPa)
> 6,000 psi
(41.4 MPa)
Slant Shear ASTM C882 modified
24 hours
> 1,000 psi
(6.9 MPa)
> 800 psi
(5.5 MPa)
7 days
> 1 ,500 psi
(10.3 MPa)
>1,500 psi
(10.3 MPa)
28 days
> 2,500 psi
(17.2 MPa)
> 3,500 psi
(24.1 MPa)
28 days, air < -0.1 < -0.1%
28 days, water < -0.1 < -0.1%
Length Change ASTM C157 (typical)