Material & Construction Specifications for Concrete Pavement Projects · Material & Construction...

Material & Construction Specifications for Concrete Pavement Projects

Presented By:National Ready Mixed Concrete Association

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National Ready Mixed Concrete Association

• National Trade Association – Established in 1930• HQ in Alexandria, VA• 1,400+ Member Companies• NRMCA Represents ~75% of North American Ready Mixed Production• Mission - Serve Industry and Partners Through:

• Compliance and Operations• Engineering• Government Affairs• Local Paving: Pave Ahead™ Initiative (PaveAhead.com)

• Structures and Sustainability: Build With Strength™ Initiative

Interested in becoming a member, visit:www.nrmca.org/membership/

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Your Instructors Today…

• Luke McHugh, P.E.– NRMCA Local Paving, Northeast Region– 33 Years in Practice– Civil Design – Aviation Emphasis

• Don Clem, P.E.– NRMCA Local Paving, Northwest Region– 40 Years in Practice– Technical Services, Pavement Engineering

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Thank you to the NRMCA 2020 Super Sponsors

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NRMCA Disclaimer

• This presentation has been prepared solely for information purposes. It is intended solely for the use of professional personnel, competent to evaluate the significance and limitations of its content, and who will accept full responsibility for the application of the material it contains. The National Ready Mixed Concrete Association and any other organizations cooperating in the preparation of this presentation strive for accuracy but disclaim any and all responsibility for application of the stated principles or for the accuracy of the content or sources and shall not be liable for any loss or damage arising from reliance on or use of any content or principles contained in this presentation.

• Unless otherwise indicated, all materials in this presentation are copyrighted to the National Ready Mixed Concrete Association. All rights reserved. Therefore reproduction, modification or retransmission in any form is strictly prohibited without the prior written permission of the National Ready Mixed Concrete Association.

• ©2015 National Ready Mixed Concrete Association.

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Instructions• Everyone is muted.• Webinar is being recorded and posted at paveahead.com/education/.• Type questions in the question box.• Download the handouts in the GoToWebinar control panel.• Credit for course:

– Based on attendance.– Survey (Quiz) – In follow-up e-mail, not required, but encouraged.– Attendance Certificate – In follow-up e-mail 1 hour after webinar.– AIA members – Attendance registered with AIA-CES if AIA number provided.

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About the Course

Learning Units (LU) or Professional Development Hours (PDH)

• AIA-CES Materials and Construction Specifications for Concrete Pavement Projects : 1.0 LU|Elective & 1.0 PDH for Engineers

• Learning Objectives:– Discover the critical elements to include in a concrete pavement specification.

– Learn about typical product (material) specifications.

– Learn about typical execution (construction) specifications.

– Be able to develop a standard specification for a concrete paving project.

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Durability of Concrete

…defined as the ability to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties.

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Durability of Concrete

• Durability is more important than strength

• Withstand freeze / thaw and deicing salts /ASR

• Need quality aggregates, low w/c ratio, adequate cement, and sufficient amount of entrained air.

• Good contractors

• Good curing measures

• Keep water out of the joints

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Specifications

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Specifications

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Concrete Pavement Specifications - Agenda

• PRODUCTS– Concrete, Steel, Admixtures, Fibers,

Curing Materials, and Joint Sealants

• MIX DESIGN– Concrete Mix, Submittal, Strength, Slump,

Air Content

• EXECUTION– Subgrade / Subbase Prep, Formwork,

Steel Placement, Concrete Placement, Finishing, Curing, Joint Construction

• FIELD QUALITY ACCEPTANCE– Inspection, Testing, Measurement &

Payment

• NOTES TO SPECIFIERS– General Notes, Checklists

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CONCRETE MATERIALS

• Cement

• Supplementary Cementitious Materials (SCMs)– Fly ash – Slag cement– Silica Fume

• Water

• Aggregates

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PORTLAND CEMENT• ASTM C150 Standard Specification for Portland Cement

• Type I -For use when the special properties specified for any other type are not required.

• Type IA -Air-entraining cement for the same uses as Type I, where air-entrainment is desired.

• Type II -For general use, more especially when moderate sulfate resistance is desired.

• Type IIA -Air-entraining cement for the same uses as Type II, where air-entrainment is desired.

• Type II (MH) -For general use, more especially when moderate sulfate resistance or moderate heat of hydration is desired.

• Type IIA (MH) -Air-entraining cement for the same uses as Type II (MH), where air-entrainment is desired.

• Type III -For use when high early strength is desired.

• Type IIIA -Air-entraining cement for the same use as Type III, where air-entrainment is desired.

• Type lV -For use when a low heat of hydration is desired.

• Type V -For use when high sulfate resistance is desired.

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BLENDED HYDRAULIC CEMENTS• ASTM C 595 Standard Specification for Blended Hydraulic

Cement covers blended hydraulic cements for both general and special applications, using slag or pozzolan, or both, with Portland cement or Portland cement clinker or slag with lime

• Type IL -Portland-limestone cement uses up to 15 percent limestone blend for a more sustainable solution that significantly reduces the carbon footprint.

• Type IS Portland blast-furnace slag cement

• Type IP Portland-pozzolan cement (Fly Ash)

• Type IT Ternary blended cement

• Type IT might have 15 to 30 percent slag cement and 10 to 20 percent pozzolan, although these can vary significantly depending on the characteristics of the specific SCMs.

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SUPPLEMENTARY CEMENTITIOUS MATERIALS (SCMs)

• For concrete that will be in a Severe Exposure Condition, limit percentage of supplementary cementitious materials, by weight of total cementitious materials, to a maximum quantity as follows:– Fly Ash: 25 percent– Slag Cement: 50 percent– Silica Fume: 10 percent

Severe

Moderate

Negligible

Location of Weathering Regions

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SUPPLEMENTARY CEMENTITIOUS MATERIALS (SCMs)

Source: ACPT Tech Brief, January 2011, FHWA-HIF- 11 -025

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PERFORMANCE BASEDHYDRAULIC CEMENTS

• ASTM C 1157 Standard Performance Specification for Hydraulic Cements

• Six hydraulic cement types are available under ASTM C1157:

• GU (general use).

• LH (low heat of hydration).

• MH (moderate heat of hydration).

• HE (high early strength).

• MS (moderate sulfate resistance).

• HS (high sulfate resistance).

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CEMENT SUMMARY

Source: ACPT Tech Brief, January 2011, FHWA-HIF- 11 -025

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WATER

• Conforms to ASTM C1602/C1602M.

• Provide documentation required by ASTM C1602/C1602M if non-potable water is proposed for use.– Conforms to mixing water requirements relative to potable or

distilled water relative to compress strength and set time.

– Below chloride, sulfate, alkalis, and total solid limits at source. • Optional and only if requested by purchaser

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AGGREGATES

• ASTM C33 – Standard Specification for Concrete Aggregates

• Nominal maximum aggregate size shall not exceed 1/3 of the specified pavement thickness.

• When required by the Engineer, provide results of aggregate tests for alkali silica reactivity in accordance with ASTM C1260.– When ASTM C1260 expansion at 14 days measured on each source of aggregate

exceeds 0.10%, provide test results with the aggregate and proposed combination of cementitious materials with an expansion that is less than or equal to 0.10% at 14 days, in accordance with ASTM C1567.

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STEEL• Comply with the sizes

and grades as shown on the plans (refer to ACI 330R-08 and ACI 325.)

• Dowels – cut, smooth, square ends, free of burrs – Plain– Epoxy Coated– Plate Dowels

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STEEL• Tie Bars – deformed bars

• Supports - chairs or other devices for spacing, supporting, and fastening reinforcing bars in place

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ADMIXTURES

• Air Entraining Admixture - ASTM C260-260M for Freeze / Thaw Protection

• Chemical Admixtures– Water-Reducing Admixture: ASTM C494/C494M, Type A.

– Retarding Admixture: ASTM C494/C494M, Type B.

– Accelerating Admixture: ASTM C494/C494M, Type C.

– Water-Reducing and Retarding Admixture: ASTM C494/C494M, Type D.

– Water-Reducing and Accelerating Admixture: ASTM C494/C494M, Type E.

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ADMIXTURES – (continued)

• Chemical Admixtures (continued)– High-Range, Water-Reducing Admixture: ASTM C494/C494M, Type F.

– High-Range, Water-Reducing and Retarding Admixture: ASTM C494/C494M, Type G.

– Special Performance Admixture: ASTM C494/C494M, Type S.

– Plasticizing Admixture for flowing concrete: ASTM C1017/C1017M, Type I.

– Plasticizing and Retarding Admixture for flowing concrete: ASTM C1017/C1017M, Type II.

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FIBERS

• Carbon-Steel Fibers

• Synthetic Fibers – Macro-fibers– Micro-fibers

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CURING MATERIALS• Liquid Membrane-Forming Compounds

– waterborne, monomolecular film forming, manufactured for application to fresh concrete

• Absorptive Cover– burlap cloth made from jute or kenaf, weighing

approximately 9 oz/yd2 (305 g/m2) when dry

• Moisture-Retaining Cover– polyethylene film or white burlap-polyethylene

sheet

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JOINT AND SEALANT MATERIALS

• Isolation Joint Materials– ASTM D994, D1751, or D1752

• Joint Sealing Materials– Hot-Poured Elastomeric Type;

ASTM D3406

– Silicone Rubber Type (cold applied); ASTM D5893/D5893M

– Single-Component Elastomeric Type (preformed); ASTM D2628

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Air Content




Payment


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CONCRETE MIX

CONCRETE

WATER

COARSE AGGREGATE

FINE AGGREGATE

ADDITIVES

CEMENT

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MIX DESIGN

• Prepare design mixtures for each type and strength of concrete required

• Proportion on the basis of field test records or laboratory trial mixtures according to ACI 301

• Use a qualified laboratory

• Communicate with you Ready Mix supplier

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MIX DESIGN SUBMITTAL

• Submit documentation for mixture proportions of concrete mixtures proposed for use in accordance with ACI 301 and Manufacturer Qualifications below:– Manufacturer’s production facilities and delivery vehicles

certified according to NRMCA's “Certification of Ready Mixed Concrete Production Facilities”

– Personnel responsible for quality control/quality assurance of concrete, certified as NRMCA Concrete Technologist Level 2 orequivalent certification required by state highway agency in the jurisdiction of the Work

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STRENGTH

• Specified compressive strength shall be 4,000 psi @ 28 days, unless otherwise specified.

• Equivalent flexural strength approximately 600 psi @ 28 days.

• Strength and water cementitious materials ratio (w/cm) shall meet the exposure class requirements.

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SLUMP

• For pavements, nominal slump shall be 4 in. (100 mm).

• Water reducers may be used to increase the slump up to 6 in. when specified.

• For pavements placed using slipform equipment the maximum slump shall be 1 1/2 in.

• Tolerance for slump stated in ASTM C94/C94M shall apply.

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TOTAL AIR CONTENT

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Air Content




Payment


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SUBGRADE PREPARATION

• Prepare subgrade as required by the plans.

• Construct subgrade elevation within the tolerance presented in ACI 117.

• If not specified on the plans or related specificationcompact subgrade to a minimum of 95% of the maximum dry density as determined by ASTM D698 and within ± 2% of the optimum moisture content

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SUBGRADE PREPARATION (continued)

• Re-grade and re-compact subgrade disturbed by concrete delivery vehicles or other construction equipment.

• Do not use sand or loose material to obtain final subgrade elevation.

• At the time of concrete paving, the subgrade density and moisture shall be as specified.

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SUBBASE

• Use only when required by contract documents.

• If used, prepare subbase same as Subgrade Preparation.

• If not specified on the plans or related specification– compact subbase to a minimum of 98% of the

maximum dry density as determined by ASTM D1557 and within ± 2% of the optimum moisture content.

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FORMWORK

• Construct formwork so that the pavement is within the tolerance limits.

• Construct forms tight.

• Fabricate forms for easy removal.

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FORMWORK (continued)

• Clean forms and adjacent surfaces to receive concrete.

• Retighten forms and bracing before placing concrete.

• Coat contact surfaces of forms with form-release agent.

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• The edge of previously placed concrete may be used as a form.

• Formwork may be removed after cumulatively curing at not less than 50ºF for 24 hours after placing concrete.

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• Clean and repair surfaces of forms to be reused in the Work.– Damaged forms will not be acceptable.

– Apply new form-release agent.

– Clean surfaces

– Remove fins and laitance

– Tighten to close joints.

– Align and secure joints to avoid offsets.

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STEEL• CRSI’s “Manual of Standard Practice”.

• Clean dowels and tie bars.

• Place joint reinforcement at locations indicated on project drawings.

• Anchor dowel baskets securely into the subgrade.

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STEEL (continued)• Do not place bent dowel baskets. Do not leave bent dowel

baskets in place.

• At time of paving, make sure all dowels are parallel to the center line of the drive lane, parallel to the base, baskets are properly pinned, and the center of each basket (i.e., the joint location) is clearly marked.

• Place and align steel to meet tolerances.

• Repair cut and damaged epoxy coatings with epoxy repair coating according to ASTM D3963.

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JOINT STEEL TOLERANCES• Tie bars:

– Horizontal placement of tie bars: ±2-1/2 in.

– Alignment of tie bars, relative to positioned perpendicular to the joint: ±1/2 in.

• Dowels:– Horizontal placement of dowels: ±1-1/4 in.

– Alignment of dowels, perpendicular to joint: 18 in. or less projection: ±1/4 in.

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CONCRETE PLACEMENT

• Measure, batch, mix, and deliver concrete according to ASTM C94, and ASTM C1116 when fibers are used, and furnish batch ticket information required by these specifications.

• Before placing concrete, verify that installation of formwork, reinforcement, and embedded items is complete and that required inspections have been performed.

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FIXED FORM CONCRETE PLACEMENT

• When placing and finishing fixed-form concrete pavement, comply with the following steps:

• Deposit concrete directly from the transporting equipment onto the subgrade or subbase.

• Do not place concrete on frozen subgrade or subbase.

• Other methods of conveying the concrete may be used when specified or permitted by the Engineer.

• Deposit concrete between the forms to a uniform height.

• Consolidate concrete to remove voids and air pockets. Do not move concrete horizontally with a vibrator.

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FIXED FORM CONCRETE PLACEMENT• Strike off concrete between forms using a form riding

paving machine, vibrating screed, or laser guided screed. Other strikeoff devices may be used, such as a highway straightedge or scraping straightedge, when approved by the Engineer.

• Immediately after strikeoff and before bleed water appears on the surface, level concrete with a bullfloat.

• Do not use steel trowels or power finishing equipment, unless otherwise specified or permitted.

• Finish the pavement to the elevations, cross slope, and thickness specified in the project drawings and meet the requirement tolerances.

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SLIP FORM CONCRETE PLACEMENT

• When placing and finishing slipform concrete pavement, comply with the following steps:

• Deposit and finish concrete in conformance with Fixed Form Placement.

• The slipform paver shall be operated with adherence to continuous forward movement as possible, and as such, all delivery and spreading of concrete shall be coordinated so as to provide uniform progress without stopping and starting the machine.

Coordination with the concrete supplier is especially important to achieve the desired result.

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SLIP FORM CONCRETE PLACEMENT• Adjust the vibrator frequency for varying

paver speeds and turn off vibrators when the paver stops.

• When the slipform paver is to ride on the edge of a new concrete pavement, the concrete strengths of the riding surface shall be greater than 2,000 psi, determined by testing field cured specimens in accordance with ASTM C31 or maturity methods.

• String lines or other means for setting grade should be checked frequently.

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PAVEMENT CONSTRUCTION TOLERANCES

• Construct pavement to comply with the following tolerances:– Elevation: 3/4 in.

– Thickness: +3/8 in., -1/4 in.

– Surface: In any direction, the gap below a 10 ft unleveled straightedge resting on high spots shall not exceed 1/2 in.

Picture Source: semanticscholar.org

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EDGING

• Edge top surface edges to a radius of 1/4 inch

• Do not tool edges if the joint is to be widened to provide a reservoir for joint sealant.

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FINAL SURFACE TEXTURE

• Complete final texturing as soon as possible after finishing, but before the concrete has attained its initial set.

Broom FinishArtificial Turf Drag

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FINAL SURFACE TEXTURE – Artificial Turf

– Artificial Turf Drag• Drag artificial turf longitudinally along the concrete pavement surface after

finishing. The turf shall be mounted on a work bridge or a moveable support system capable of varying the area of turf in contact with the pavement.

• The turf drag shall be a single piece of artificial turf of sufficient length to span the full width of the pavement being placed.

• The turf used shall be an artificial grass type having a molded polyethylene pile face.

• Turf dragging operations should be delayed if there is excessive bleed water.

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FINAL SURFACE TEXTURE – Artificial Turf

– Artificial Turf Drag (continued)• Prevent the turf from getting plugged with grout or dragging larger

aggregates or foreign materials by cleaning or replacing as necessary.

• Measures should be taken to ensure a surface of uniform appearance that is free from deep striations.

• Turf should be thoroughly cleaned or replaced at the end of each day’s use. Damaged or worn turf should be repaired and/or replaced.

• When surface corrections for pavement smoothness are made in the hardened concrete, no additional texturing is required.

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FINAL SURFACE TEXTURE – Broom Finish– Broom Finish

• Broom concrete surface with a steel or fiber broom to produce corrugations between 1/16 and 1/8 in. (2 and 3 mm) deep.

• Broom perpendicular to nearest edge of pavement. Broom all areas of a panel in the same direction.

• Use the same type and manufacture of broom for all paved surfaces to provide a consistent appearance.

• Other methods of producing final surface texture may be permitted when specified or accepted by the Engineer.

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COLD WEATHER PLACEMENT• Comply with ACI 306.1 and as follows:

• Protect concrete work from physical damage or reduced strength that could be caused by frost, initial freezing, freezing and thawing cycles, or low temperatures.

• Concrete temperature as delivered and temperature of placed concrete shall be maintained within the temperature range required by ACI 301.

• Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade or on subgrade containing frozen materials.

• Do not use calcium chloride, salt, or other materials containing antifreeze agents or chemical accelerators, unless otherwise specified or permitted.

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HOT WEATHER PLACEMENT

• Comply with ACI 305R and as follows:– Maintain concrete temperature below 95ºF (35ºC) at time of

placement. Chilled mixing water or ice may be used to control temperature. Quantity of ice used shall be included in the total amount of mixing water. Using liquid nitrogen to cool concrete is Contractor’s option.

– Fog-spray forms, steel reinforcement, and subgrade just before placing concrete. Keep subgrade uniformly moist without standing water, soft spots, or dry areas.

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CONCRETE PROTECTION AND CURING

• Protect the concrete from damage due to rain.

• Protect freshly placed concrete from premature drying and excessive cold or hot temperatures.

• Apply curing compound immediately after final surface texture has been obtained and water sheen has disappeared.

• Apply membrane-forming curing compound to all exposed surfaces at a maximum coverage rate of 180 ft²/gal.

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CONCRETE PROTECTION AND CURING

• Apply curing compound to pavement edges after forms, if used, have been removed.

• Alternative curing methods may be used in accordance with this specification or with ACI 308.1 when acceptable to the Engineer.

• Maintain and promptly repair damage to curing materials on exposed surfaces of concrete pavement

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JOINTS

• Construct joints at the locations, depths, and with dimensions indicated on the project drawings or accepted drawings submitted by the contractor.

• The contractor shall not proceed with work until the jointing requirements are accepted by the Engineer.

Contraction (Control) joint Construction joint

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JOINTS

• If jointing requirements are not indicated on the project drawings, the contractor shall submit drawings describing proposed jointing as follows:– Indicate locations of contraction joints, construction joints, and

isolation joints. Spacing between contraction joints shall conform to the table below, unless otherwise permitted.

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JOINTS– The larger dimension of a panel shall not exceed 125% of the

smaller dimension.

– The minimum angle between two intersecting joints shall be 80 degrees, unless otherwise specified or permitted.

– Joints shall intersect pavement free edges at 90-degree angles and shall extend straight for a minimum of 1-1/2 ft (0.5 m) from the pavement edge, where possible.

– Align joints of adjacent panels.

– Align joints in integral curbs with joints in pavement.

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JOINTS

– Ensure joint depth and width dimensions are as specified.

– Minimum contraction joint depth, using a conventional saw, hand tools, or inserts, shall be 1/4 of the pavement thickness. Minimum joint width for saw cutting is 1/8 in. (3 mm). When using an early-entry dry-cut saw, the depth of the cut shall be at least 1 in. (25 mm).

– Use isolation joints only where pavement abuts buildings, foundations, existing pavements, manholes, and other fixed objects.

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JOINTS

• Construct contraction joints by one of the following methods:– Saw-cut concrete after concrete has hardened sufficiently to

prevent aggregate from being dislodged and soon enough to control pavement cracking. Discontinue sawing joint if a crack precedes the saw-cut. Resume sawing at the next joint location.

– Tool contraction joints in fresh concrete after the concrete has set sufficiently to maintain the formed joint to the specified depth and width.

– Insert plastic strips vertically into the fresh concrete. Depress strips into pavement until flush with surface.

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JOINTS

• Isolation Joints– Extend isolation joints

through the full depth of the pavement.

– Fill the entire isolation joint with isolation joint material, unless otherwise required by project drawings or by accepted jointing drawings submitted by the contractor.

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JOINT FILLING

• General notes for all joints:– Prepare, clean, and install joint

filler according to manufacturer's written instructions.

– Remove dirt, debris, saw cuttings, curing compounds, and sealers from joints

– Keep contact faces of joint clean and dry.

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JOINT FILLING – Hot-Poured Liquid Sealants– Place joint sealer when the pavement and surrounding air temperature are

40°F or higher.

– Where specified, backer rods shall be installed to provide proper shape factor.

– Use an indirect heating kettle with an agitator to prevent localized overheating. Discard overheated material.

– Use insulated hoses. Fit the application wand with a recirculation line to prevent the temperature of the sealant in the hose from dropping below application temperature.

– Clean any spilled or overfilled joint sealant from the concrete surface.

– Make sure that the top of the sealant is 1/8 to 1/4 in. (3 to 6 mm) below the pavement surface.

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JOINT FILLING – Cold-Poured Liquid Sealants– Place joint sealer when the pavement and surrounding air temperature are

40°F or higher.


– Use joint primer provided by the manufacturer to ensure a good bond between the sealant and the joint reservoir face.

– Tool non-self-leveling sealants before the material cures.

– Clean any spilled or overfilled joint sealant from the concrete surface

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JOINT FILLING – Cold-Poured Silicone Sealants– Place joint sealer when the pavement and surrounding air temperature are

40°F (5°C) or higher.


– Use joint primer provided by the manufacturer to ensure a good bond between the sealant and the joint reservoir face.

– Tool non-self-leveling sealants before the material cures.

– Clean any spilled or overfilled joint sealant from the concrete surface

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JOINT FILLING – Preformed Compression Seals– Check joint width for compatibility.

– Make sure the joint width doesn’t vary, especially at points where the saw reenters the joint.

– Clean and dry the saw cut reservoir before sealing the joint. Seal joints only when the joint surfaces appear dry.

– Follow the manufacturer’s recommendation for sealant sizing and installation.

– Make sure the sealant is lubricated, straight, vertical, and undamaged before installation.

– Make sure that the installation device does not stretch the sealant.

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INSPECTIONS

– Prior to commencement of portions of the work, the inspection agency shall provide verification that the following items meet the specification requirements:

• Subgrade and/or subbase density and elevation.

• Steel tie and dowel bar reinforcement placement, if used.

• Use of required design mixture.

• Concrete placement, including conveying and depositing.

• Curing procedures.

• Concrete strength before removal of forms, if used.

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CONCRETE TESTS

• Testing of composite samples of fresh concrete obtained according to ASTM C172/C172M shall be performed according to the following requirements:

– Preliminary Samples/Tests– Testing Frequency– Slump– Air Content– Density

– Concrete Temperature– Compression Test Specimens– Compressive-Strength Tests– Reporting– Additional Tests

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TESTING & INSPECTING• Contractor shall engage a qualified testing and inspecting

agency to perform tests and inspections.

• Additional testing and inspecting, at Contractor's expense, will be performed to determine compliance of replaced or additional work with specified requirements.

• Correct deficiencies in the Work that test reports and inspections indicate does not comply with this specification and/or the Contract Documents.

• Contractor shall submit reports for acceptance.

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MEASUREMENT & PAYMENT• Measurement will be in square yards for each different

thickness of concrete pavement. The area of manholes, inlets, or other fixtures in the pavement will not be deducted from the measured pavement area.

• Payment will be at the unit price per square yard for each thickness of concrete pavement. Unit price includes, but is not limited to, final trimming of subgrade or subbase, integral curb, bars and reinforcement, joints and sealing, surface curing and pavement protection, safety fencing, concrete for rigid headers, and box outs for fixtures.

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OPENING TO TRAFFIC

• Open to Vehicular Traffic:– In-place compressive strength is at least 2,500 psi

– Or 75% of the specified strength,

– Or until the pavement is accepted by the Engineer for opening to traffic

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GENERAL NOTES

• ACI Specification 330.1 is to be used by reference or incorporation in its entirety

• Do NOT refer as ACI Specification 330.1 if only sections or parts are copied or inserted.

• A statement such as the following will serve to make ACI Specification 330.1 a part of the Project Specification: – “Work on (Project Title) shall conform to all requirements of ACI

330.1 published by the American Concrete Institute, Farmington Hills, Michigan, except as modified by these Contract Documents.”

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GENERAL NOTES

• Each technical Section of ACI Specification 330.1 is written in CSI format.

• If ACI Specification 330.1 is used with another ACI specification containing overlapping provisions, identify conflict and state which controls.

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CHECKLISTS

• Checklists do not form a part of ACI Specification 330.1. Checklists assist the specifier in selecting and specifying project requirements in the Project Specification .– Mandatory Requirements Checklist, page 7

– Optional Requirements Checklist, page 8

– Submittals Checklist, page 8

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Summary

•The Materials and Construction Specification is a critical document

–It communicates the design engineer’s requirements for the proper materials and construction techniques for a concrete pavement project.

–A well-developed specification will result in more competitive bids, and less problems on the job.

NRMCA Resources

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Handout documents included

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Pave Ahead™ Design Center• Design and Jointing recommendations and reviews for free• Cost comparisons including life cycle costs• Specification review• Ready mixed products:

– Conventional concrete (full depth and overlays)– Pervious concrete– Roller compacted concrete– Cement slurry for full depth reclamation (FDR)

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Local Paving Division: State and Regional Assignments

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Local Paving Division: State and Regional Assignments

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www.paveahead.com/education

• More Concrete Pavement professional development:– Each Thursday beginning at 2:00 pm EDT– April 02 Designing Concrete Parking Lots and Streets

– April 09 Designing Concrete Industrial Pavements

– April 16 Soils 101: What to Know for a Successful Paving Project

– April 23 Concrete Pavement Jointing and Details

– April 30 Materials and Construction Specifications for Concrete Pavement Projects

– May 07 Concrete Street and Parking Lot Maintenance and Repair

– May 14 Concrete Overlays of Existing Asphalt Surfaced Streets and Parking Lots

– May 21 Concrete Trail Design

• Concrete Buildings Webinar Series: https://buildwithstrength.com/education/– Each Wednesday beginning at 2:00 pm EDT

Recordings available for previous webinars!

https://buildwithstrength.com/education/

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www.paveahead.com/education• More Concrete Pavement professional development:

– Each Thursday beginning at 2:00 pm EDT

– May 28 Designing Pervious Concrete

– June 4 Specifying Pervious Concrete

– June 11 Installing Pervious Concrete

– June 18 Maintenance Guidelines for Pervious Concrete

• Portland Cement Association Webinar Series: www.cement.org/events

– Each Wednesday beginning at 9:00 am EDT

– April 22 Full-Depth Reclamation with Cement

– April 29 Lightweight Cellular Concrete for Geotechnical Applications

– May 6 Roller-Compacted Concrete Pavements

– May 13 Cement Stabilized Subgrade Soils

– May 20 Cement-Based Water Resource Applications

Pervious Concrete Webinar Series!

https://www.cement.org/events

[email protected]

Luke McHugh, P.E.Sr. Director – Local Paving

[email protected]

Don Clem, P.E.VP – Local Paving

Material & Construction Specifications for Concrete Pavement Projects · Material & Construction...

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