00566.03 Section 00566 – Carbon Fiber Reinforced Polymer Strengthening - Near Surface Mounted Description
00566.00 Scope - This Work consists of designing and installing a complete, near surface mounted,
carbon fiber reinforced polymer (CFRP) strengthening system meeting the loading and design requirements shown. The system is comprised of CFRP reinforcement (“bars”) embedded in saw -cut grooves with epoxy.
00566.01 Abbreviations :
CFRP - Carbon Fiber Reinforced Polymer FRP - Fiber Reinforced Polymer NSM - Near Surface Mounted
00566.02 Design Standards - Design the NSM -CFRP system meeting the requirements of this
Section and the requirements of ACI 440.2R or AASHTO Guide Specifications for Design of Bonded FRP Systems for Repair .
00566.03 Required Submittals :
a.Materials Certifications - At least 21 Calendar Days before starting Work, submit the manufacturer's material certifications for the CFRP strengthening system. Include the Supplier’s name and ranges of the properties listed below, including test methods used, for CFRP and epoxy resin. Material Properties to be Furnished CFRP Tensile Strength Elongation Tensile Modulus Rupture Strain Surface Finishes Cross -Sectional Area Width Thickness High Strength Epoxy Resin Tensile Strength Elongation Tensile Modulus Coefficient of Thermal Expansion Mix Ratio Pot Life Shelf Life UV Resistance
b.Test Results - At least 21 Calendar Days before starting Work, conduct longitudinal tensile property testing on five samples of the CFRP bar according to Part 2 of ACI 440.3R, ASTM D7205, or ASTM D3039 and submit test results. Sample CFRP bars shall have the same physical properties as and be from the same manufacturer as the bars that will be installed in permanent Work.
c.Personnel Qualifications - Submit pers onnel qualifications at the pre-construction conference. 00566.03 560 (1) CFRP Application Advisor Certification - Submit the CFRP materials manufacturer’s certification of the Contractor’s designated CFRP Application Advisor.
2.CFRP Application Advisor Certifica tion Experience - Submit documentation showing that the Contractor’s designated CFRP Application Advisor has experience as CFRP Application Supervisor, CFRP Application Advisor, or lead worker on three Bridge or building projects using near surface mounted CFRP bars in the last 5 years. The CFRP material used on projects submitted for experience does not need to be from the same manufacturer as material proposed for this Project. For each project submitted, include: • Project name • Contract number • Location • Owner, including contact person’s name and telephone number • Installation work duration (month and year) • Material used and material manufacturer
3.Applicators Certification - Submit certification(s) from the CFRP material manufacturer, or from the Contr actor’s designated CFRP Application Advisor, affirming that all applicators who will install the CFRP system have been trained in the installation of CFRP.
d.Working Drawings and Calculations - At least 21 Calendar Days before starting Work, submit sta mped Working Drawings and design calculations from the manufacturer of the CFRP system according to 00150.35(b) except as modified by this Subsection. Include the following in the Working Drawings: • All information required for proper construction of the CFRP system • Material properties of CFRP bars • Spacing and length of CFRP bars • Dimensions of saw -cut groove • Furnished epoxy resin Include the following in the design calculation: • Design specifications • Design criteria • Material properties • Calculations • Installation guide As-constructed plans of the existing Structure(s) are available from the Engineer. 00566.30 561 Materials
00566.10 Pre -Approved CFRP Ma nufacturers and Material List - Furnish rectangular or circular
CFRP bars from one of the followi ng list of pre-approved manufacturers. Manufacturer Material Owens Corning Infrastructure Solutions Aslan TM 500 CFRP Tape 210 N. 13th Street AslanTM 200 CFRP Rod Seward, NE 68434 Contact: Doug Gremel Phone: (800) 869-0359 or (402) 643- 2991 Fax: (402) 643- 2149 BASF Building Systems, LLC MBrace® S&P Laminate 5185 Linn Lane West Linn, OR 97068 Contact: Bruce Jackson Phone: (503) 722-4101 or (503) 887- 4402 FAX: (503) 722 -4131 Fyfe Co., LLC Tyfo® NSM Composite 3940 Ruffin Road, Suite C Laminate Strip System San Diego, CA 92123 Contact: Scott Arnold Phone: (858) 642-0694 FAX: (858) 444 -2982 All bars shall have a textured, deformed, or roughly sanded surface and shall be marked at regular intervals al ong the length, spaced not more than 6 feet, showing the manufacturer’s mark, size designation and production lot number.
00566.11 Epoxy Resin - Furnish epoxy resin from the QPL having a viscosity appropriate for the
installation, as determined by the CFRP manufacturer. With the Engineer’s approval, epoxy resin recommended by the CFRP manufacturer may be used to complete the NSM -CFRP system.
00566.12 Material Sampling - Provide five samples per lot of CFRP bar materials for testing by the
Agency. Samples shall be from the same lot(s) used in the permanent work. Provide the samples at least 21 Calendar Days before starting CFRP installation work. Prepare samples’ length and end anchors according to ASTM D7205 or ASTM D3039. Allow the Engineer to select six additional samples per lot of CFRP bar materials delivered to the site for testing by the Agency. Samples will be a minimum of 8 feet in length. Labor 00566 .30 Personnel Qualifications - Provide a certified and trained CFRP Application Advisor to provide technical assistance prior to and during CFRP Work. Ensure the CFRP Application Advisor remains available for consultation until the completion and accept ance of all CFRP Work. Provide trained personnel to install the CFRP system. Submit personnel qualifications according to 00566.03(c). 00566.40 562 Construction
00566.40 Existing Reinforcemen t Location and Concrete Cover - Use rebar detectors or other
approved de vices, capable of locating existing reinforcement within 0.1 inch, to locate existing top mat reinforcement and determine the thickness of concrete cover. Before constructing grooves, provide the Engineer with a summary of top mat transverse and longitudi nal reinforcement measurements.
00566.41 Saw -Cutting Gr ooves - Construct saw -cut grooves in the concrete at the spacing
established by the design submitted according to 00566.03(d), and to the designed width and depth ± 1/8 inch. Make grooves deep enough to allow the CFRP bar to be installed at least 1/8 inch below the surface in all locations along the length of CFRP bars. Where practicable, do not cut into existing rebar during construction of saw -cut grooves. Visually inspect all existing rebar loc ations after saw - cutting grooves. When existing reinforcement is cut, inform the Engineer before installation of CFRP bars. Groove spacing may be adjusted in the field as necessary to avoid existing reinforcement or other unforeseen conflicts; however, t he average spacing of all grooves over any 2 foot long section may not be more than the spacing required by the submitted design. Maintain a minimum clear spacing greater than twice the depth of the groove and a minimum clear edge distance of four times t he depth of the groove.
00566.42 Groove Preparation - Prepare saw -cut grooves for CFRP bar installation as follows:
a.Surface Cleaning - Clean the groove according to the manufacturer's recommendations. If the manufacturer has not provided recommen dations, thoroughly clean the groove with high- pressure water and a non-metallic brush. Before the groove dries out, blow it free of water and debris with compressed air. Ensure that all dust, sand, laitance, grease, curing compounds, and any other bond- inhibiting matter is removed from the groove. The concrete surface of grooves shall be clean and structurally sound prior to installing CFRP bars.
b.Moisture on Groove Surfaces - Before installation of CFRP bars, dry groove surfaces using a drying method approved by the Engineer and according to the epoxy manufacturer's recommendations. Do not directly apply a flame to the groove surfaces.
00566.43 Compressed Air - When using high-pressure air for cleaning or blowing down, use
adequate sep arators and traps to ensure that the air is free of water, oil, or any other material detrimental to the CFRP system. Compressed air cleanliness may be tested by the Engineer according to ASTM D4285.
00566.44 CFRP Bar Installation - Begin installation only after all groove preparation work is
complete. Install the CFRP bars according to the manufacturer's recommendations and to the embedment depths shown. Do not install CFRP bars and epoxy resin when the c oncrete temperature is below 50 °F, unless otherwise advised by the resin manufacturer’s recommendations. Provide temporary containment, as required, to contain epoxy resin in the groove. Mask the concrete adjacent to the groove to prevent excess epoxy from adhering to the concrete outs ide the groove. Center the CFRP bar in the groove using approved centering devices at one-third points along the CFRP. Centering devices shall not have less than 1/8 inch resin cover when installed. Place nylon or polyethylene spacer material between the CFRP bars and exposed, existing steel reinforcing. 00566.90 563 Level epoxy resin flush with the surface of the adjacent concrete.
00566.45 Surface Cleanup - Remove excess epoxy resin outside the groove.
Measurement
00566.80 Measurement - No measurement of quantities will be made for W ork performed under this
Section. Estimated quantities of CFRP bars will be listed in the Special Provisions. Payment
00566.90 Payment - The accepted quantities of installed CFRP strengthening will be paid for at the
Contract lump sum amount for the item "CFRP Strengthening - Near Surface Mounted". Payment will be payment in full for furnishing and placing all M aterials, and for furnishing all Equipment, labor, and I nciden tals necessary to complete the W ork as specifi ed.
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Source: Oregon Standard Specifications for Construction, 2024 Edition. Pages 625–629 of 1,268. View official source ↗