Division 4
Masonry
04110 - MORTAR & GROUT
PART 1 - GENERAL
1.01
1.02
SCOPE
A.
Furnish all labor, materials, equipment, and services necessary for
the installation of mortar and grout for concrete unit masonry.
B.
Related work in other areas.
1.
Cast-in-Place Concrete – Section 03300.
2.
Masonry Accessories – Section 04150.
3.
Masonry Reinforcement – Section 04160.
4.
Concrete Unit Masonry – Section 04200.
REFERENCES
A.
ASTM C94 – Standard Specification for Ready-Mixed Concrete.
B.
ASTM C144 – Standard Specification for Aggregate for Masonry
Mortar.
C.
ASTM C150 – Standard Specification for Portland Cement.
D.
ASTM C207 – Standard Specification for Hydrated Line for Masonry
Purposes.
E.
ASTM C270 – Standard Specification for Mortar for Unit Masonry.
F.
ASTM C404 – Standard Specification for Aggregates for Masonry
Grout.
G.
ASTM C476 – Standard Specification for Grout for Masonry.
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Division 4
Masonry
1.03
H.
ASTM C780 – Standard Test Method for Pre-construction and
Construction Evaluation of Mortars for Plain and Reinforced Unit
Masonry.
I.
ACI 530 – Building Code Requirements for Masonry Structures.
J.
International Building Code, latest adopted edition, Chapter 21
requirements.
SUBMITTALS
A.
1.04
1.05
Submit masonry mortar and grout mix designs for approval, including
information on compressive strength.
MIX TESTS
A.
Test mortar mix cubes under provisions of Contract Documents.
B.
Test grout mix cylinders under provisions of Contract Documents.
C.
Mortar and grout sampling and testing shall conform to requirements
of the International Building Code and the Structural Engineer.
ENVIRONMENTAL REQUIREMENTS
A.
Maintain materials and surrounding air temperature to minimum 40F
prior to, during, and 48 hours after completion of masonry work.
B.
Cold Weather Requirements: Refer to minimum requirements in
accordance with the International Building Code.
PART 2 - PRODUCTS
2.01
MATERIALS
A.
Portland Cement: ASTM C150, normal-Type II; gray color.
B.
Masonry Cement: Not permitted.
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Division 4
Masonry
2.02
C.
Mortar Aggregate: ASTM C144, standard masonry type; clean, dry,
protected against dampness, freezing, and foreign matter.
D.
Mortar Strength: 1,800 psi at 28 days.
E.
Grout Strength: 2,000 psi at 28 days.
F.
Grout Course Aggregate: ASTM C404, maximum 3/8-inch size.
G.
Grout Fine Aggregate: ASTM C404 sand.
H.
Hydrated Lime: ASTM C207, Type S.
I.
Water: Clean and potable.
J.
Grout shall be free of fly ash and chloride.
ADMIXTURES
A.
2.03
2.04
Do not use calcium chloride, fly ash, pre-mixed mortar, or retardant
admixtures.
MIXES
A.
Mortar for Load Bearing Walls and Partitions: ASTM C270, Type S.
B.
Mortar for Non-Load Bearing Walls and Partitions: ASTM C270,
Type S.
C.
Mortar for Reinforced Masonry: ASTM C270, Type S.
D.
Grout for Reinforced Masonry: ASTM C476, fine or coarse.
MORTAR MIXING
A.
Thoroughly mix mortar ingredients in quantities needed for
immediate use in accordance with ASTM C270.
B.
If water is lost by evaporation, re-temper within two hours of mixing.
Do not re-temper mortar after two hours of mixing.
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Division 4
Masonry
PART 3 - EXECUTION
3.01
3.02
INSTALLATION
A.
After inspection of concrete grout spaces plug clean out holes with
masonry units. Brace against wet grout pressure.
B.
Install mortar and grout in accordance with manufacturer’s
specifications and Contract Drawings.
C.
Work grout into cores and cavities to eliminate voids.
D.
Do not displace reinforcing steel when placing grout.
E.
Clean concrete grout spaces of excess mortar and debris.
QUALITY CONTROL
A.
Grout and mortar shall be tested per the International Building Code
and the Contract Drawings.
B.
Mortar shall be tested for the first day’s work and every three (3)
days thereafter.
C.
Grout shall be tested for each lift or for each 2,000 square feet of
wall, whichever provides the greatest amount of testing.
D.
Provide three (3) samples per mortar or grout test. Test one sample
at seven (7) days and two samples at twenty-eight (28) days. All
testing to be conducted at a qualified testing laboratory.
End of Section
04110-4