Technical Specifications

Data sheets are subject to change without notice. For the latest version, please check the product page at www.tccmaterials.com
Available Size
• 50 lb. (22.7 kg) bag (BOM # 102627)
Coverage
• Each 50 lb. bag will yield approximately a ½ cu. ft. (0.014 m
3
)
of wet mortar
• This will lay up about 80-100 standard fire bricks at ⅛ in.
(3 mm) joint thickness
5. INSTALLATION
Preparation
Read all directions before starting work.
1. All materials should be conditioned to 40°F-75°F (4°C-24°C)
24 hours prior to installation.
2. Remove all loose or unsound materials. Thoroughly clean all
surfaces and substrates of dirt, dust, grease, or other
contaminants.
3. Do not apply to painted surfaces. Paint must be removed to
ensure proper adhesion to the substrate.
Note: It is the responsibility of the installer/applicator to ensure
the suitability of the product for its intended use.
Mixing
1. Use cool, potable water, clean tools and clean containers. No
bonding additive is needed.
2. Mix only the amount that can be applied within the 20 minute
working time.
3. For best results, mix complete contents of the bag in a mortar
box. Create a trough in the powder and add 3.5 qt. (3.3 L) of
potable water. Mix with a shovel or hoe. A mechanical mixer
or a 5 gal. (18.9 L) bucket with a mixing drill attachment is a
suitable alternative method to mixing this product. Avoid high-
speed mechanical mixing which can entrap air into the
mixture.
4. Mix for 2 minutes, let rest for 3 minutes, then mix again for 2
minutes. Mix thoroughly to achieve a uniform, lump-free, putty
-like consistency. Mortar should be firm, but workable to be
trowelable, and stiff enough to retain ridges and peaks when
troweled on a horizontal or vertical surface.
5. If additional liquid is needed, add sparingly up to a total of 4.5
qt. (4.2 L). Excess water reduces strength and can cause
cracking.
6. Warmer temperatures will reduce the working time. The
addition of cold water at high temperatures, or warm water in
low temperatures will aid in adjusting the mix temperature.
Application
For best results, apply only to surfaces that are frost free and
above 40°F (4°C) and below 100°F (38°C) within 24 hours of
application and 72 hours thereafter. Do not apply to frozen or
frost-filled surfaces. Do not apply in direct sunlight on hot, windy
days or when rain is forecasted within 24 hours.
For fire or clay brick, a ⅛ in. (3 mm) to ⅜ in. (9.5 mm) joint
thickness is fairly common. For clay flue tile, a ⅛ in. joint
thickness is common. Always check with brick manufacturer for
their joint thickness recommendations and installation
guidelines since this may vary depending on what product is
being used.
Curing
No special curing is required under normal installation
conditions. Temperatures should remain above 40°F (4°C) for a
minimum of 7 days. If temperatures are expected to drop below
1. PRODUCT NAME
Akona
®
Medium-Duty Refractory Mortar
2. MANUFACTURER
Akona Manufacturing, LLC
A TCC Materials Company
2025 Centre Pointe Blvd., Suite 300
Mendota Heights, MN 55120 USA
Phone: [phone]
Web: tccmaterials.com
3. PRODUCT DESCRIPTION
Akona Medium-Duty Refractory Mortar is a dry, preblended
mortar ideally suited for setting masonry units in fireplaces,
inside of fire pit rings, barbeques, pizza ovens, or chimney
applications such as setting clay flue liners and parging a
smoke chimney chamber. This specially-engineered blend of
specific cements and aggregates gives the mortar unique heat
-resistance and thermal characteristics for use in high-
temperature applications. It is also used to bond fire brick or
clay flues to each other. Ordinary mortars can be destroyed or
deteriorate under such high-heat conditions. Passes ASTM
C199 for mortar temperature limits to resist 2,550°F (1399°C)
for a minimum of 6 hours without melting out of the joints of a
firebrick and refractory mortar assembly. Required by most
building codes for installation of firebrick and flues in
chimneys, masonry fireplaces and similar applications.
Features and Benefits
• Medium-duty hydraulic mortar
• Good for applications up to 2550°F(1399°C)
• Non water-soluble
• Just add water, mix, and use
• Air entrained for freeze-thaw resistance
• One hour working time
• Great workability and high strength
When/Where to Use
• Laying fire brick or clay masonry in high heat applications
• Interior or exterior
• Use for constructing or tuck pointing fireplaces, barbecues,
and chimneys
• Outdoor fireplaces and fire pits
• Setting clay flue liners
• Set or parging of smoke chambers
4. TECHNICAL DATA
Applicable Standards:
• Passed ASTM C199 Standard Test Method for Pier Test for
Refractory Mortars for medium-duty
• ASTM C 1283 Standard Practice for Installing Clay Flue
Lining
• ASTM E 136 Test Method for Behavior of Materials in a
Vertical Tube Furnace
MEDIUM-DUTY
REFRACTORY MORTAR
Dry, medium-duty refractory mortar for setting masonry in fireplaces and chimneys
Typical Values • Medium-Duty Refractory Mortar
Initial Set Time Approximately 20 minutes
Final Set Time Approximately 60 minutes
Compressive Strength ASTM C109
24 hours > 1,250 psi (8.6 MPa)
7 days > 3,500 psi (24.1 MPa)
28 days > 5,000 psi (34.4 MPa)