US-pavers on mortar bed.docSECTION 32 14 13CONCRETE PAVERS SET IN MORTAR(1995 MasterFormat Section 02780)Note: This guide specification for the U.S. is for concrete pavers mortared to a concrete base and groutedjoints for exterior applications. Pavers installed with this method recommended for areas subject topedestrian traffic only. The text must be edited to suit specific project requirements. This Section includesthe term "Architect." Edit this term as necessary to identify the design professional in the General Conditionsof the Contract.There are two methods recognized for mortar applications of concrete pavers. They are (1) setting thepavers on a plastic, workable mortar bed, and (2) setting the pavers on a cured mortar bed with a thin-setlatex-portland cement mortar. The term “thin set” is used to describe the method of installing pavers or slabswith a bonding material that is 1/16 to 1/8 in. (2 to 3 mm) thick. The term thin set and dry set are usedinterchangeably. The installation methods referenced in this guide specification are found in ANSISpecifications for Installation of Ceramic Tile and the Tile Council of America’s Handbook for Ceramic TileInstallation. Reading these references is a prerequisite to using this guide specification. Mortar and groutmanufacturers can provide additional guidance on selection and installation of their products depending onwhich installation method is chosen.PART 1GENERAL1.01 SUMMARYA.Section Includes1.Precast concrete paving slabs with grouted joints.2.Preparation of concrete base.3.Slurry (bond) coat.4.Mortar bed [thin-set/dry-set].5.[Cleaners and Sealers].B.Related Sections1.Section [] - Aggregate Subbase.2.Section [] - Concrete [Walks] [Curbs] [and] [Gutters],3.Section [] - Cast-in-Place Concrete.4.Section [] – Sealants and Caulking.Note: Use the current year reference.1.02 REFERENCESA.American National Standards Institute (ANSI)1.American National Specifications for the Installation of Ceramic Tile.B.American Society for Testing and Materials (ASTM)1.C 67, Standard Test Methods for Sampling and Testing Brick and Structural ClayTile, Section 8, Freezing and Thawing.2.C 140, Standard Test Methods for Sampling and Testing Concrete Masonry Unitsand Related Units.3.C 920, Specification for Elastomeric Joint Sealants.4.C 936, Specification for Solid Concrete Interlocking Paving Units.5.C 979, Standard Specification for Pigments for Integrally Colored Concrete.C.Tile Council of America (TCA):1.Handbook for Ceramic Tile Installation.1

US-pavers on mortar bed.doc1.03 QUALITY ASSURANCEA.Installer Qualifications: Engage an experienced installer who has successfully completedmortar set unit paver installations similar in design, material, and extent indicated for thisProject.B.Single-source Responsibility: Obtain each color, type, and variety of unit paving, joint materialsand setting materials from single sources with resources to provide products and materials ofconsistent quality, appearance and physical properties without delaying progress of the Work.C.Field-constructed Mock-up: Prior to installation of pavers, erect mock-up(s) for each form andpattern of unit paver required. Build mock-up(s) using materials, base construction, expansionjoints, and special features for contiguous work, as indicated for final unit of Work.1.04SUBMITTALSA.In accordance with Conditions of the Contract and Division 1 Submittal ProceduresSection.B.Manufacturer’s drawings and details: Indicate perimeter conditions, relationship toadjoining materials and assemblies, [expansion and control joints,] concrete paver[layout,] [patterns,] [color arrangement,] installation [and setting] details.C.Mortar color samples that indicate the extremes of color variation expected in the finishedinstallation.D.Concrete pavers:1.[Four] representative full-size samples of each paver type, thickness, color, finishthat indicate the range of color variation and texture expected in the finishedinstallation. Color(s) selected by [Architect] [Engineer] [Landscape Architect][Owner] from manufacturer’s available colors.2.Accepted samples become the standard of acceptance for the work.3.Test results from an independent testing laboratory for compliance of paving unitrequirements to ASTM C 936.4.Manufacturer’s certification of concrete pavers by ICPI as having met applicableASTM standards.5.Manufacturer's catalog product data, installation instructions, and material safetydata sheets for the safe handling of the specified materials and products.E.Paver Installation Subcontractor:1.A copy of Subcontractor’s current certificate from the Interlocking ConcretePavement Institute Concrete Paver Installer Certification program.2.Job references from projects of a similar size and complexity. ProvideOwner/Client/General Contractor names, postal address, phone, fax, and emailaddress.1.05QUALITY ASSURANCEA.Paving Subcontractor Qualifications:1.Utilize an installer having successfully completed concrete paver installationsimilar in design, material, and extent indicated on this project.2.Utilize an installer holding a current certificate from the Interlocking ConcretePavement Institute Concrete Paver Installer Certification program.B.Regulatory Requirements and Approvals: [Specify applicable licensing, bonding or otherrequirements of regulatory agencies.].C.Mock-Ups:1.Install a 7 ft x 7 ft (2 x 2 m) paver area.2.Use this area to determine surcharge of the mortar bed, joint sizes, lines, layingpattern(s), color(s), and texture of the job.2

3.4.6.US-pavers on mortar bed.docThis area will be used as the standard by which the work will be judged.Subject to acceptance by owner, mock-up may be retained as part of finishedwork.If mock-up is not retained, remove and properly dispose of mock-up.1.05DELIVERY, STORAGE & HANDLINGA.General: Comply with Division 1 Product Requirement Section.B.Comply with manufacturer’s ordering instructions and lead-time requirements to avoidconstruction delays.C.Delivery: Deliver materials in manufacturer’s original, unopened, undamaged containerspackaging with identification labels intact.1.Coordinate delivery and paving schedule to minimize interference with normaluse of buildings adjacent to paving.2.Deliver concrete pavers to the site in steel banded, plastic banded or plasticwrapped packaging capable of transfer by forklift or clamp lift.3.Unload pavers at job site in such a manner that no damage occurs to theproduct.D.Storage and Protection: Store materials protected such that they are kept free from mud,dirt, and other foreign materials. [Store concrete paver cleaners and sealers permanufacturer’s instructions.]1.Cover mortar sand with waterproof covering if needed to prevent exposure torainfall or removal by wind. Secure the covering in place.2.Protect cementitious materials from moisture and freezing temperatures. Storein a dry location.1.06PROJECT/SITE CONDITIONSA.Environmental Requirements:1.Do not install in rain or snow.2.Do not install over when outside temperature is below 45 F (5 C).1.07MAINTENANCEA.Extra Materials: Provide [Specify area] [Specify percentage.] additional material for useby owner for maintenance and repair.B.Pavers shall be from the same production run as installed materials.PART 22.01PRODUCTSCONCRETE PAVERSNote: Concrete pavers may have spacer bars on each unit. They are highly recommended for mechanicallyinstalled pavers. Manually installed pavers may be installed with or without spacer bars.A.B.Manufacturer: [Specify ICPI member manufacturer name.].1.Contact: [Specify ICPI member manufacturer contact information.].Interlocking Concrete Paver Units, including the following:1.Paver Type: [Specify name of product group, family, series, etc.].a.Material Standard: Comply with material standards in ASTM C 936.b.Color [and finish]: [Specify color.] [Specify finish].3

c.d.US-pavers on mortar bed.docColor Pigment Material Standard: Comply with ASTM C 979.Size: [Specify.] inches [({Specify.}mm)] x [Specify.] inches[({Specify.}mm)] x [Specify.] inches [({Specify.} mm)] thick.Note: If 3 1/8 in. (80 mm) thick pavers are specified, their compressive strength test results per ASTM C140 should be adjusted by multiplying by 1.18 to equate the results to that from 2 3/8 in. (60 mm) thickpavers.e.Average Compressive Strength (C140): 8000 psi (55 MPa) with noindividual unit under 7200 psi (50 MPa).f.Average Water Absorption (ASTM C 140): 5% with no unit greater than7%.g.Freeze/Thaw Resistance (ASTM C 67): Resistant to 50 freeze/thawcycles with no greater than 1% loss of material. Freeze-thaw testingrequirements shall be waived for applications not exposed to freezingconditions.2.022.03PRODUCT SUBSTITUTIONSA. Substitutions: No substitutions permitted.MORTARNote: Verify the compatibility of the selected mortar with the pavers before proceeding with mortaring.Consult with the mortar manufacturer's representative for recommendations.A.Mortar bed or thin-set mortar: Meets ANSI A118.4, Specifications for latex-portland cementmortar.Note: Use epoxy mortars when application is subject to freeze-thaw conditions or deicing salts.A.2.04[Epoxy mortar: Meets ANSI 118.3, Specifications for chemical resistant, water cleanabletile- setting, and-tile grouting epoxy and water cleanable tile-setting epoxy adhesive.]GROUTNote: Verify the compatibility of the selected pigmented grout with the pavers before proceeding with thegrouting. Consult with the grout manufacturer's representative for recommendations.A.Meets ANSI 118.7, polymer modified cement grouts for tile installation.Note: Use epoxy grouts in when application is subject to freeze-thaw conditions and deicing salts.A.B.C.[Meets ANSI 118.3, Specifications for chemical resistant, water cleanable tile- setting, and-tilegrouting epoxy and water cleanable tile-setting epoxy adhesive.]Grout colors: selected by the Architect from the manufacturer's complete color range.Acceptance of grout products is subject to the approval of both the Architect and the pavermanufacturer prior to bid closing.2.05 ACCESSORIESA.Water: Potable and free from minerals or other materials that are detrimental to mortar andgrout mixes.4

B.C.D.E.US-pavers on mortar bed.docPrimer: As recommended by the mortar material manufacturer.Sealant [and backing materials]: Conforming to ASTM C 920 as specified in Section [ ].Mixes: Prepare pre-mix materials in accordance with manufacturer's written instructions.Edge Restraints: Provide edge restraints installed around the perimeter of all interlockingconcrete paving unit areas as follows:1.Manufacturer: [Specify manufacturer.].2.Material: [Plastic] [Concrete] [Aluminum] [Steel] [Pre-cast concrete] [Cut stone][Concrete].3.Material Standard: [Specify material standard.].Note: Delete article below if cleaners and sealers are not specified.F.PART 33.01[Cleaners] [Sealers]1. Material Type and Description: [Specify material type and description.].2. Material Standard: [Specify material standard.].3. Manufacturer: [Specify manufacturer.].EXECUTIONACCEPTABLE INSTALLERSA.[Specify acceptable paving subcontractors.].Note: The elevations and surface tolerance of the base determine the final surface elevations of concretepavers. The paver installation contractor cannot correct deficiencies in the base surface with additionalmortar bedding or by other means. Therefore, the surface elevations of the base should be checked andaccepted by the General Contractor or designated party, with written certification to the pavingsubcontractor, prior to placing mortar and concrete pavers.3.02 EXAMINATIONA.Inspect areas and conditions under which work is to be performed and notify the Architect inwriting of conditions detrimental to the proper and timely completion of the work.B.Verify that concrete base is sloped for drainage and is free of standing water, dust, oil, grease,paint, wax, curing compounds, primer, sealers, form release agents, or any deleterioussubstances and debris which may prevent or reduce bonding. [Conduct moisture tests to verifythat concrete surfaces are completely cured, free from hydrostatic pressure and having amoisture content of less than 5%.]C.Verify that grout materials can be cleaned from pavers, or provide coating to pavers to facilitateremoval of grout materials.D.Do not proceed with the work until unsatisfactory conditions have been corrected corrected bythe General Contractor or designated subcontractor to the satisfaction of the installer [andsurfaces and conditions comply with the applicable requirements of ANSI A-108.1].3.03 PREPARATIONA.Completely remove loose particles and debris from surface of concrete base. This may requiremechanical grinding and scarifying of the surface.B.Neutralize any trace of strong acid or alkali from the substrate prior to mortar application.C.If leveling of the concrete surface is necessary, apply latex Portland cement mortar surfaceleveling materials to the surface of the substrate to bring the surface to a true, even plane.5

D.US-pavers on mortar bed.docAllow mortar-leveling materials to set prior to installation.Surface to receive [slurry coat and] mortar shall have a tolerance of 1/4 in. (6 mm)over 10 ft (3 m) for normal mortar setting bed applications and 1/8 in. (3 mm) over 10 ft (3 m)for thin set mortar setting bed applications.3.04 INSTALLATIONA.Moisten concrete base and apply slurry bond coat to concrete base per manufacturer’sdirections.B.Mix and apply mortar setting bed material in accordance with the manufacturer's instructions.Spread mortar in quantities that will remain plastic and workable during installation of pavers.Note: Finishing the surface of a mortar bed or thin-set mortar typically involves placing a skim coat with a flattrowel on one pass and returning with a pass of the notched side of the trowel. Pavers are placed with aslight twisting motion to help ensure adhesion of the mortar to the bottom of the paver. Each paver is tappedwith a rubber mallet to further bed each into the mo