MPS Master
SECTION 04 05 15
MORTAR AND MASONRY GROUT
PART 1 - GENERAL
1.01 SUMMARY
A.Section Includes:
1.Provide mortar for installing unit masonry specified under Section 042000.
2.Provide mortar for installing precast architectural concrete units specified under Section 034500.
3.Provide mortar for installing date stone, specified under Section 04.
4.Provide setting and pointing mortar for the following:
a.Glazed Concrete Masonry Units
b.Glazed Tile
c.Cast Stone
5.Provide pre-mixed (pre-blended) colored mortar for installation of masonry at the following locations:
a.Exterior Face Brick
b.Interior Face Brick
c.Interior Ground Concrete Masonry Units
6.Provide mortar with integral water-repellent admixture for the following:
a.Exterior Face Brick
7.Provide masonry grout related to unit masonry construction where noted and specified under Section 042000.
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B.Related Work:
1.Testing: Owner’s testing agency will perform pre-construction testing of mortar and masonry grout mixes as specified within this Section and testing during construction as specified under Section 042000.
1.02 SUBMITTALS
A.Submittals Related To Pre-Construction Testing:
1.General Requirements:
a.Owner will contract with an independent testing agency to perform quality control testing of mortar mixes and masonry grout mixes.
b.Testing agency shall submit reports documenting results of testing performed.
c.Do not begin construction which requires use of mortar and masonry grout until after submittal and approval of test reports.
d.Owner’s testing laboratory shall verify mortar and grout proportions during construction sampling when mixes are field blended.
e.Test mix design prior to beginning construction of masonry.
2.Mortar Mixes:
a.Test mortars, prebatched by weight, in accordance with ASTM C780 recommendations for preconstruction testing.
b.Test results will be used to establish optimum mortar proportions and establish quality control values for construction testing.
3.Masonry Grout Mixes:
a.Test grout batches in accordance with ASTM C1019 procedures.
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b.Test results will be used to establish optimum grout proportions and establish quality control values for construction testing.
c.Sevenday strength test and a 28day strength test will be required for every 30 or less cubic yards of each type of grout placed each day. Sevenday compressive strength test of laboratory mix design must exceed specified 28day design compressive strength.
d.A strength test shall be taken as the average of the strengths of (2) 3inch by 3inch by 6inch rectangular grout specimens made from same sample of grout that will be prepared and tested in accordance with ASTM C1019.
**** ARCHITECT - SELECT FROM ALL PARAGRAPHS BELOW (or delete if no colored mortar) ****
B.Colored Mortar Samples:
1.Submit for selection, colored mortar samples showing full extent of colors available.
2.After mortar color has been selected by Architect, submit (3) samples of each mortar color selected for use by Architect in verifying that proper mortar color(s) are used on Project.
***** WHEN MORTAR COLOR(S) ARE TO MATCH EXISTING MORTAR COLOR(S), DELETE PARAGRAPH AND SUBSEQUENT SUBPARAGRAPHS ABOVE AND USE PARAGRAPH AND SUBSEQUENT SUBPARAGRAPHS BELOW *****
C.Colored Mortar Samples:
1.Submit for approval, samples of colored mortar intended to match existing mortar color.
2.Submit for approval, samples of each color of mortar to use with various masonry units to match color of mortar used at each similar existing condition.
3.After mortar color(s) have been approved as matching existing mortar color(s), submit 3 approved samples of each color for use by Architect in verifying that proper mortar color(s) are used on Project.
***** END *****
1.03 QUALITY ASSURANCE
A.Regulatory Requirements:
1.Mortar: In accordance with ASTM C270, property method.
2.Masonry Grout: In accordance with ASTM C476.
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B.Single Source Responsibility For Mortar Materials: Obtain mortar ingredients of uniform quality, including color for mortar joints of exposed masonry, from one manufacturer for each cementitious component and from one source and producer for each aggregate.
C.Qualifications of Persons who will be Batching and Mixing Mortar and Masonry Grout:
1.Only persons trained and experienced in the accurate and consistent batching of ingredients and their mixing are to prepare mortar and masonry grout.
D.Mortar and Grout Mix Designs:
1.Contractor shall have mix designs designed and signed by a professional engineer employed by a qualified independent laboratory which is other than the Owner’s testing laboratory.
2.Architect/Engineer’s Structural Engineer shall approve mix designs after consideration of preconstruction test results.
1.04 DELIVERY, STORAGE, AND HANDLING
A.Storage and Protection:
1.Deliver and store packaged materials in original, unopened containers and store in dry weathertight enclosure.
2.Protect products against dampness, freezing, and foreign matter.
3.Store cementitious materials and aggregates in such a manner to prevent deterioration and intrusion of foreign materials.
4.Stockpile and handle aggregates to prevent segregation and contamination.
5.Maintain sand for volume preparation of mortar and grout in a damp loose condition.
B.Delivery and Storage of Pre-Blended Mortar Mix:
1.Deliver preblended, dry mortar mix in moisture resistant containers designed for use with dispensing silos.
2.Store preblended, dry mortar mix in delivery containers on elevated platforms, under cover, and in a dry location or in covered weatherproof dispensing slots.
1.05 SITE CONDITIONS
A.Cold Water Requirements:
1.Do not use frozen materials or materials mixed or coated with ice or frost.
2.Meet cold weather construction requirements contained in ACI 530.1, ASCE6, and TMS602.
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B.Hot Weather Requirements:
1.Meet hot weather construction requirements contained in ACI530.1, ASCE6, and TMS602.
PART 2 - PRODUCTS
2.01 MORTAR AND MASONRY GROUT MATERIALS
A.Portland Cement: ASTM C150, Type I or II, except TypeIII may be used for coldweather construction. Portland cement used in mortar for installing date stone shall comply with staining requirements of ASTM C90 for not more than 0.03 percent water soluble alkali.
***** ARCHITECT - SELECT FROM SUBPARAGRAPHS BELOW *****
1.Color: Manufacturer’s standard gray.
2.Color: White.
3.Color: Manufacturer’s standard gray, except provide cement color as required to obtain mortar colors to match adjacent existing non-coated mortar colors.
***** END *****
B.Masonry Cement: Do not use.
C.Hydrated Lime: ASTM C207, Type S.
D.Aggregate For Mortar: ASTM C144, except for joints less than 1/4inch, use aggregate graded with 100percent passing a No.16 sieve.
E.Aggregate For Masonry Grout: ASTM C404.
F.Water: Clean and potable quality.
G.Admixtures:
1.AirEntraining Admixtures: Do not use airentraining admixtures or cementitious materials containing airentraining in mortar or masonry grout.
2.Antifreeze Compounds: Do not use antifreeze compounds or other substances which lower freezing point of mixing water in mortar or masonry grout.
3.Calcium Chloride Admixtures: Do not use calcium chloride or admixtures containing calcium chloride in mortar or masonry grout.
4.Integral Liquid WaterRepellent Admixture:
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a.Acceptable Manufacturer: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows or Owner approved equal:
1)W.R.Grace & Co.-Conn., Construction Products Division, “DRYBLOCK Mortar Admixture”
2)BASF Admixtures, RHEOPEL7 Mortar Admixture
b.Description: Integral liquid polymeric admixture to be mixed into mortar mix.
c.Applicable Standards:
1)Class E rating when evaluated using ASTM E514 with test extended to 72hours, using rating criteria found in ASTM E514.
2)No decrease in concrete masonry bond strength or compressive strength of prisms when compared to a control test when tested in accordance with ASTMC1314 and ASTM C1357 respectively.
d.Compatibility: Water repellent, used in mortar intended for use with concrete masonry units containing water repellent, must be by same manufacturer; verify and coordinate.
H.Pigment For Integrally Colored Mortar:
1.Acceptable Manufacturers of Mortar Pigments: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows or Owner approved equal:
a.Davis Colors, subsidiary of Rockwood Industries, Beltsville, MD
b.Mix Manufacturing, Prism Pigments Division of Spec Materials, Inc., Vadnais Heights, MN
c.Solomon GrindChem Service, Inc., Springfield, IL
2.Applicable Standards: In accordance with ASTM C979.
3.Colored Mortar Mix and Proportions:
a.Colored mortar to be a pre-mixed, prebagged, pigmented Portland cementlime mortar formulated to produce required mortar color and meeting requirements for mortar type specified for installation location where colored mortar is to be provided.
b.Pigments are not to exceed 10percent of Portland cement by weight for mineral oxide pigments nor 2percent of Portland cement by weight for carbon black pigments.
4.Mortar Colors: As selected by Architect from mortar pigment manufacturer’s full range of colors.
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MPS Master
SECTION 04 05 15
2.02 PRE-BLENDED MORTAR MIXES
A.Acceptable Manufacturers: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows or Owner approved equal:
1.SPEC MIX, Inc., Mendota Heights, MN, 888/7732649 or 651/6888966 (phone), 888/3297732 (fax)
a.Pre-Blended Mortar Mix: Spec Mix “PCL Sand”, Pre-Blended Portland and Lime Mortar Mix
b.Pre-Blended Mortar Mix With Integral Water Repellent: Spec Mix “IWR”, PreBlended Portland and Lime Mortar Mix With Integral Water Repellent
c.Pre-Blended Colored Mortar Mix: Spec Mix “PCL Sand Color”, PreBlended Colored Mortar Mix
d.Pre-Blended Colored Mortar Mix With Integral Water Repellent: Spec Mix “PCL Sand Color With IWR”, PreBlended Colored Mortar Mix With Integral Water Repellent
B.Pre-Blended Mortar Mix:
1.Description: Preblended factory mix of Portland cement, hydrated lime, and sand aggregate.
2.Materials and Standards: As specified.
C.Pre-Blended Portland and Lime Mortar Mix With Integral Water Repellent:
1.Description: Preblended factory mix of Portland cement, hydrated lime, sand aggregate, and dry integral water repellent admixture.
2.Materials and Standards: As specified.
3.Requirements For Integral Water Repellent: As specified.
D.Pre-Blended Portland and Lime Colored Mortar Mix:
1.Description: Preblended factory mix of Portland cement, hydrated lime, sand aggregate, and color pigments.
2.Materials and Standards: As required.
3.Mortar Color: As selected by Architect from manufacturer’s full range of colors.
E.Pre-Blended Portland and Lime Colored Mortar Mix With Integral Water Repellent:
1.Description: Preblended factory mix of Portland cement, hydrated lime, sand aggregate, color pigments, and dry integral water repellent admixture.
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2.Materials and Standards: As specified.
3.Requirements For Colored Pigment: As specified.
4.Requirements For Integral Water Repellent: As specified.
2.03 PORTLAND CEMENT AND LIME MORTAR
A.General Requirements:
1.Do not use admixtures, including pigments, airentraining agents, accelerators, retarders, waterrepellent agents, antifreeze compounds, or other admixtures, unless specifically specified.
a.Provide integral liquid water-repellent admixture only in mortar mix used for mortar joints exposed to exterior environmental conditions. Provide admixture and mix uniformly in accordance with admixture manufacturer’s instructions.
2.Do not use calcium chloride admixtures, or any admixture containing calcium chloride, in mortar.
B.Measuring Materials:
1.Method of measuring materials for mortar shall be by dry volume and carried out in such a manner to ensure that specified proportions of mortar materials shall be controlled and accurately maintained.
2.Measurement of sand by shovel is not permitted.
C.Mixing Mortars:
1.Thoroughly mix mortar ingredients in quantities needed for immediate use in accordance with ASTM C270.
2.Mix mortar materials not less than 3 minutes and not more than 5minutes, in a mechanical batch mixer, consistent from batch to batch.
3.Use only water amount required to produce a workable consistency.
D.Retempering:
1.Retempering mortars will alter watertocement ratio, which may affect compressive strength and color consistency. Avoid as much as possible, and add additional water only to replace water lost due to evaporation.
2.Retemper mortars only twice within 2hours after introducing water; do not retemper after 2hours.
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3.Place mortar in its final position within 21/2hours after initial mixing.
4.If applicable to Project, do not retemper colored mortars.
E.Brand of Portland Cement:
1.Use same brand of Portland cement for entire Project for each type of masonry unit where mortar joints will remain exposed.
2.If brand of cement must be changed, adjust mix, if necessary, to compensate for color differences.
F.Portland Cement Mortar Mix - Property Method: In accordance with ASTM C270.
***** MODIFY SUBPARAGRAPHS BELOW AS REQUIRED AND ADD NEW FOR OTHER MORTAR TYPES WHEN REQUIRED *****
1.Type S Mortar: Use at following locations:
a.Concrete Masonry Units In Exterior Walls Above Grade
b.Interior Concrete Masonry Unit Load-Bearing Walls
c.Cast Stone Products
2.Type N Mortar: Use at following locations:
a.Face Brick
b.Interior Concrete Masonry Unit Non-Load-Bearing Walls
c.Pointing Mortar With Maximum 2 Percent Ammonium Stearate or Calcium Stearate per Cement Weight
d.Architectural Precast Concrete
e.Date Stone
f.Masonry Supported Stone Cladding
3.Minimum Compressive Strength at 28Days:
a.Type S: 1,800 psi
b.Type N: 750 psi
G.Refractory Mortar: Mortar for fire brick shall be best grade of fire clay mortar of a consistency for dipping in accordance with ASTM C199.
2.04 POINTING MORTAR
***** DELETE PORTLAND CEMENT POINTING MORTAR BELOW IF ONLY EPOXY TYPE POINTING MORTAR IS REQUIRED *****
A.Portland Cement Pointing Mortar:
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1.Use Locations: For repair of mortar joint at concrete masonry units and brick.
2.Use Locations: For Glazed Concrete Masonry Units (GLCMU) and Glazed Structural Tile (GST).
3.Mix: 1part Portland cement and 3parts sand.
4.Color: [Architect has option to use gray or white pointing mortar.] [Provide white cement, if required, so cured mortar joints will match color of mortar joints at existing GLCMU] [GST]. [Match color of mortar being repaired].
5.Mixing For Colored Mortar:
a.Pre-mix Portland cement, lime, and color pigment. Site mixing/blending of materials is not acceptable.
b.Deliver pre-mixed materials to Project site in bags.
c.Cured color of mortar shall match color of mortar used for existing [GLCMU] [GST].
1)Wherever glazed structural tile GST abuts brick on the same plane, color of pointing mortar for glazed structural tile shall match mortar color used for brick.
B.Epoxy Pointing Mortar:
1.Use with [glazed concrete masonry units (GLCMU)] [glazed structural tile (GST)] [installed as a base course of walls above floors] [and] [installed for walls].
2.Epoxy pointing mortar shall be substantially based on an epoxy resin.
3.Mix: Epoxy pointing mortar shall be a 2 and 3component mix consisting of a resin, hardener, and powder, containing less than 0.1percent free water and nonpolymerizable organic solvents.
4.Epoxy pointing mortar mix shall have a working life of not less than 45minutes at 75degreesF.
5.Epoxy pointing mortar shall set and harden within 16hours.
6.Powder used in epoxy pointing mortar shall be free of coarse filler materials that may scratch surface finish of products during installation.
7.When completely set and hardened, epoxy pointing mortar shall be free of odor.
8.Epoxy pointing mortar must meet or exceed American National Standards Institute A118.31969; General Service Administration PBS40931; U.S.Department of Agriculture; Veteran’s Administration Master Construction Specification; and U.S.Army CE243.01.
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9.Epoxy Pointing Mortar Color: To be as selected by Architect.
C.Pointing Mortar For Cast Stone: 1part non-staining cement (ASTM C91), 1part hydrated lime (ASTM C207. TypeS) and 4parts of clean, washed sand (ASTM C144). Coloring pigments may be added if required. Architect shall approve color of pointing mortar before proceeding with pointing.
2.05 MASONRY GROUT
A.Masonry Grout:
1.3,000 psi strength at 28 days with 8to10inches of slump.
2.Provide 3/8inch maximum size aggregate in masonry grout used for masonry unit core fill and bond beam fill.
B.Mixing Grout:
1.Thoroughly mix ingredients in quantities needed for immediate use in accordance with ASTM C476 for Project site mixed masonry grout and in accordance with ASTM C94 for ready mixed (truck-transported) masonry grout.
2.Do not use anti-freeze compounds to lower the freezing point of masonry grout.
C.Placing: Place grout within 11/2hours after initial mixing.
PART 3 - EXECUTIONNot Used
END OF SECTION
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