QA and Sub Requests 2.pdf

QUESTIONS & ANSWERS #2

All questions & substitution requests received before 4/25/25 2:00pm.

BIDDER QUESTION A&E / DAS ANSWERS

1 Please clarify the intent of the column FRP strengthening, is FRP intended for axial or shear strengthening?

A&E: FRP is intended for crack repair and shear strengthening. See photos 9 A-C on sheet S-402.

2 Please provide the ultimate in-plane/axial shear demand for the joint transfer details using the anchored plates (Details 1-5/S-401). If an alternative method of reinforcing can accommodate the same demand, will it be accepted?

A&E: Seismic demand is 88 kips per connection.

Alternate methods may be considered provided method is approved under the current building code.

3 Is there a specification for painting/coating the column FRP, it indicates in the spec that it should be per the manufacturer however the minimum coating is typically 2 layers of paint.

A&E: Painting / coating shall be approved by owner and as recommended by FRP manufacturer.

4 The plate details show a defined bolt spacing typical for each plate. What is the intent when reinforcing steel is encountered at that spacing?

Are we to drill through the reinforcing to get to the imbed depth or will the plate need modification?

A&E: Wall reinforcing may be drilled through for placement of anchor bolts.

5 Is GPR scanning required for all locations that receive a plate bracket?

A&E: No

6 The drawings indicate field welds at the connection of the horizontal and vertical plates. Is this required or can the plates be welded during fabrication offsite prior to installation?

A&E: Shop or field welding be utilized.

7 Per onsite discussion it was indicated we could remove decommissioned steam pipes as needed to facilitate plate install (full removal not required) please confirm. Given the pipe is supported by hangers is there any requirement to secure the remaining pipe left in place further than what is existing? Will additional hangers be required? At

DAS EAM: Please remove all abandoned pipes and hangers.

the south wall there were several pipes stacked on top of each other

8 As per discussion on site, the engineer indicated that the exact location of the plates is less of a concern as the total number of plates. Is there a total number of plates per floor required?

A&E: Total number of connections shall be consistent with spacing noted on plans. Some connections mya be shifted during construction with EOR approval to avoid conflicts; however, this will be reviewed on a case by case basis.

9 Are the column numbers/signage being removed and replaced by others?

DAS EAM: No, contractor responsibility to remove, DAS will reuse same signs/column numbers.

10 Ventilation will be required for cutting/demo, can the garage fans run for the duration of pipe demo?

DAS EAM: The Contractor will be responsible for temporary ventilation of the work areas. (ie. To the general parking areas from behind the chase walls on the upper levels) DAS will determine if additional mechanical ventilation needs to be provided by a DAS system.

11 Is it expected to remove the pipe at locations of concrete repair?

A&E: See sheet S-106 for concrete repair location

12 Per onsite discussion it was indicated there was no plan to relocate existing conduit, the plans state to do so as needed. Please clarify which is the case. If required does DAS have a preferred electrical contractor that services the garage?

DAS EAM: Plans state to relocate existing conduit as needed.

DAS does not have a preferred electrical firm.

Approval of electrical firm must be approved by DAS prior to construction beginning.

13 Is there a staging area above grade where we can park a dumpster?

DAS EAM: DAS will provide Contractor staging area as follows:

1) Below Grade: Depending on the Contractors work plan - next to the work areas involved and for use by company vehicles six (6) parking spaces will be provided at no cost to the contractor for the duration of the project.

2) Above Grade: North of the Capital Mall Park, across Center Street is the RED State-owned parking lot. DAS will provide Six (6) parking spots for the duration of this project at no expense to the contractor for use as a staging area. All other employee parking costs will be the responsibility of the contractor.

MATERIAL SUBSTITUTION REQUEST

1 Please see the attached product data for an alternate FRP system manufacturer and epoxy injection resin.

• KonTek 111 LV-IR

• Tyfo SCH-41 Composite

• Tyfo S Epoxy

A&E: No exceptions taken to proposed alternate, approved.

KonTek™ 111 LV-IR

LOW VISCOSITY EPOXY ADHESIVE FOR PRESSURE INJECTION GROUTING

Type: Two-component, solvent-free, epoxy resin / hardener.

Primary Use:

Structural repair of cracks and delaminations in concrete, masonry, wood and FRP.

Filling of porous and honeycombed concrete and grout.

Adhesive bonding of steel (external reinforcement).

Anchoring bolts, dowels and rebar into concrete, masonry and stone.

Substrates: Concrete, masonry, stone (dry, damp and wet), steel, wood and FRP.

Minimum Temp: Installation: 35° F (substrate temperature).

Applications:

Cracks, delaminations and annular spaces up to 1/4" width; greater than 1/4" with pre-placed aggregate.

ASTM C 881: Meets the requirements Type IV load bearing applications.

Shelf Life: Three years minimum in sealed containers (see below for conditions).

The properties listed in this bulletin are typical and descriptive of the product and should not be used for specification purposes. For specification preparation, reference the specification of this product available from ConTech Group, Inc. This product is available only through KonTek System applicators.

DESCRIPTION: KonTeK™ 111 LV-IR is a two-component, very low viscosity, structural, epoxy adhesive specifically designed for low temperature pressure injection grouting using KonTek System automatic meter, mix and dispense application equipment. Primary uses include the structural repair of cracks and delaminations in concrete, masonry, stone and sealed wood; filling of voids in porous and honeycombed concrete and grout; adhesive bonding of steel plates (external reinforcement); and, anchoring bolts, dowels and rebar into concrete, masonry or stone. Applications requiring material thickness in excess of ¼ inch may be facilitated by pre-placing aggregate in the void. KonTeK 111 LV-IR bonds to dry, damp and wet substrates. The components do not contain volatile organic compounds (VOC's).

FEATURES: The physical properties of the product allow its use in applications requiring resistance to creep and stress relaxation, maintenance of mechanical properties at high ambient temperatures, high lead bearing strength and excellent adhesion under adverse application conditions, e.g., cold, wet and underwater concrete. Unlike many other high modulus epoxy adhesives, KonTeK 111 LV-IR cures to a tough, resilient polymer with excellent lead transfer capabilities.

Exceptional substrate wetting and very low viscosity allow filling of fine crack and void networks into which more viscous resins will not flow.

KonTeK 111 LV-IR can be pressure injected at lower temperatures than most other epoxy resin products. It has a convenient 2:1 (by vol.)

mixing ratio and contains special colorants for contrasting component color.

LIMITATIONS: The recommended minimum substrate temperature during installation is 35 °F. (Notes: Caution must be exercised to avoid ice at low temperatures. Cure rate at low temperatures is very slow.)

The maximum in-service temperature should not exceed 20 °F below the HDT in bonding applications subjected to substantial and sustained shear stresses that may cause creep. Installed thickness in excess of 1/4 inch may require the use of pre-placed aggregate to dissipate heat generated during the cure process. Do not add solvents or otherwise thin this material.

PACKAGING & COLOR SELECTION: Standard package sizes of Part A + Part B are 3, 15 and 150 gallon units. The standard color of the mixed components is dark purple. A clear amber color is available and may require minimum quantities and/or slightly higher cost.

SHELF LIFE: Three years minimum in unopened, original containers when stored between 60 and 90 °F in a dry place away from sunlight.

Remixing of components may be required upon long-term storage.

CHEMICAL RESISTANCE: KonTeK 111 LV-IR has excellent resistance to a wide range of commonly encountered chemicals including acids and bases, aircraft and automotive fluids, petroleum fuels, cutting oils, etc. It has limited resistance to hydrocarbon solvents. Performance is a function of the specific chemical and concentration, ambient and solution temperatures, exposure times and housekeeping procedures.

For information on specific chemicals and exposure conditions, contact a ConTech Group, Inc., technical representative.

SURFACE PREPARATION: Concrete surfaces may be dry, damp, wet or underwater, but must be sound and free of all bond-inhibiting substances. Prepare cracks by blowing clean with oil-free compressed air or by flushing clean with an appropriate cleansing solution as required to remove foreign substances and contaminants. Prepare exposed surfaces for bonding in accordance with ASTM D 4259, 'Standard Practice for Abrading Concrete,' or ACI 503R, Chapter 5, 'Preparing Surfaces for Epoxy Compound Application,' and ConTech Group, Inc.'s specific recommendations. Properly prepared concrete surfaces should have a minimum strength of 250 psi in direct tension.

Steel surfaces should be cleaned to 'white metal' according to SSPC

SP 5.

MIXI N G: KonTeK 111 LV-IR is a two-component adhesive specifically designed for use with KonTeK Systems automatic meter, mix and dispense application equipment. The resin to hardener (Part A: Part B) mix ratio is 2:1, by volume. The KonTeK System Guideline Specification includes provisions for routine periodic testing of the KonTeK System grouting equipment to determine that it is metering the components accurately and delivering thoroughly mixed material.

PO BOX 84886 SEATTLE, WA 98124

206-763-9877

KonTeK 111 LV-IR , Page 2 of 2

TYPICAL PROPERTIES (1)

PROPERTY TEST METHOD VALUE

MIX RATIO, A:B, BY VOL 2: 1

BY WT 100: 43

COLOR: PART A VISUAL CLEAR AMBER

PART B DARK PURPLE

MIXED DARK PURPLE

WEIGHT PER GALLON, LB: PART A ASTM D 1475 9.5

PART B 8.1

MIXED 9.0

VISCOSITY, CP: PART A ASTM D 2393 290

PART B 90

MIXED 190

VISCOSITY @ 40 F, CP: ASTM D 2393 1150

GEL TIME, 100 G, MINUTES: @ 40 F ASTM D 2471 85

@ 73 F 21

TENSILE STRENGTH, PSI ASTM D 638 8900

ELONGATION AT BREAK, % ASTM D 638 2

COMPRESSIVE YIELD STRENGTH, PSI ASTM D 695 15,800

COMPRESSIVE MODULUS, PSI ASTM D 695 410,000

FLEXURAL STRENGTH, PSI ASTM D 790 12,000

FLEXURAL MODULUS, PSI ASTM D 790 490,000

HEAT DEFLECTION TEMP., DEG F ASTM D 648 140

BOND STRENGTH, PSI: 2 DAYS (MOIST CURE) ASTM C 882 1275

14 DAYS (MOIST CURE) 2375

(1) CURE SCHEDULE, 7 DAYS AT 73° ± 4° F AND TEST TEMPERATURE, 73° ± 4° F UNLESS OTHERWISE INDICATED.

INSTALLING: The KonTeK System, its products and equipment are only available from KonTeK applicators. KonTeK 111LV-IR is installed in accordance with KonTek System Guideline Specification procedures and ConTech Group, Inc.'s specific recommendations. For additional information on repair by pressure injection grouting, see ACI 503R, Chapter 7, “Applying Epoxy Compounds.”

CLEAN UP: All tools and equipment must be cleaned before the mixed material cures. Cleaning can be facilitated with a solvent such as acetone or heavy-duty detergents. Cured material may be removed from equipment and tools by soaking in an epoxy stripper.

HANDLING AND TOXICITY: This bulletin does not accompany the product when sold. For hazard warnings, safe handling and first aid instructions.

CAREFULLY READ THE MATERIAL SAFETY DATA SHEETS AND CONTAINER WARNING LABELS.

Part A: Liquid epoxy resin, HMIS Health Hazard Rating- 2 (Moderate Hazard). Warning! Causes eye and skin irritation. May cause allergic skin reaction, Harmful if swallowed. Avoid contact with eyes, skin and clothing. Wash thoroughly after handling. Avoid prolonged or repeated contact with skin.

Part B: Liquid epoxy hardener, HMIS Health Hazard Rating- 3 (Serious Hazard). Contains alkaline amines. Danger! Causes severe eye and skin burns. May cause allergic skin and respiratory reaction, Corrosive. Do not get in eyes or skin or on clothing. Avoid breathing vapor, Keep container closed. Use only with adequate ventilation. Wash thoroughly after handling. Keep away from heat and open flame.

DISCLAIMER: NO EXPRESS WARRANTY IS MADE WITH RESPECT TO THE RESULTS OF ANY USE OF THIS PRODUCT. NO IMPLIED WARRANTIES, INCLUDING AND NOT LIMITED TO AN IMPLIED WARRANTY OF MERCHANTABILITY OR AN IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE IS MADE WITH RESPECT TO THIS PRODUCT. NO LIABILITIES FOR PERSONAL INJURY, LOSS OR DAMAGE RESULTING FROM THE USE OF THIS PRODUCT IS ASSUMED. CONTECH GROUP, INC. RESERVES THE RIGHT TO ALTER OR DISCONTINUE THE PRODUCT DESCRIBED HEREIN AT ANY TIME AND WITHOUT PRIOR NOTICE.

KONTEK™ IS A TRADE NAME OF CONTECH GROUP, INC.

Publication Number: 6 EP CGI-111LV-IR Publication Date: Feb 2014

TYFO® SCH-41

Composite using Tyfo® S Epoxy

DESCRIPTION

The Tyfo® SCH-41 Composite is comprised of the Tyfo® S Epoxy and Tyfo® SCH-41 reinforcing fabric.

Tyfo® SCH-41 is a custom, uni-directional carbon fabric orientated in the 0o direction. The Tyfo® S Epoxy is a two-component epoxy matrix.

USE

The Tyfo® SCH-41 fabric is combined with Tyfo® S Epoxy to provide an ambient-cure, wet-layup, composite system for strengthening bridges, buildings and other structures.

ADVANTAGES

PACKAGING

Tyfo® SCH-41: 24” x 300 lineal ft. (600 sq. ft.)

Typically ships in 12” x 13” x 27” boxes.

Tyfo® S Epoxy: Pre-measured 5-gallon units with a combined material volume of 4 gallons or in 55-gallon drums.

COVERAGE

Approximately 3 to 4 units of Tyfo® S Epoxy per roll of the Tyfo® SCH-41 fabric.

CONSUMPTION RATE

Fabric-to-epoxy ratio by weight:

For Tyfo® SCH Fabrics: 1 : 1 For Tyfo® SEH Fabrics: 1 : 0.8

SHELF LIFE

Epoxy - two years in original, unopened and properly stored containers.

Fabric - 10 years in proper storage conditions.

STORAGE CONDITIONS

Store epoxy at 60°F to 100°F (15°C to 38°C).

Resin is susceptible to crystallization at temperatures below 50°F. If crystallized, epoxy must be reheated until clear. Store fabric rolls flat, not on ends, and at temperatures below 100°F (38°C). Avoid moisture and water contamination.

Typical Dry Fiber Properties

Material properties are based on standard laboratory conditions (23oC, 50 percent relative humidity.)

Property Typical Test Value

Tensile Strength 620,000 psi (4.3 GPa)

Tensile Modulus 36.0 x 106 psi (250 GPa)

Ultimate Elongation 1.7%

Density 0.064 lbs./in.3 (1.77g/cm3)

Minimum weight per sq. yd. 19 oz (644 g/m2)

Fabric roll weight 85.5 lbs. (38.8 kg)

Composite Gross Laminate Properties

Property3 ASTM Method

ACI 440.2R

Properties1 Design Properties2

Ultimate Tensile Strength in Primary Fiber Direction

D3039

131,000 psi (903 MPa)

131,000 psi (903 MPa)

Elongation at Break 0.90% 0.90%

Tensile Modulus 14.6 x 106 psi (100 GPa)

12.6 x 106 psi (87 GPa)

Tensile Strength per inch width

D7565

5,240 lbf/in width (918 N/mm)

5,240 lbf/in width (918 N/mm)

Tensile Stiffness per inch width

584 x 103 lbf/in width (102 kN/mm)

504 x 103 lbf/in width (88 kN/mm)

Nominal Laminate Thickness D1777 0.04 in. 0.04 in.

1 Strength is defined as the mean strength (171 ksi) minus 3 standard deviations. Modulus is defined as the reported mean modulus, and elongation is defined as the calculated strain from the design strength and modulus.

2 Tensile modulus is defined as the 5th percentile value representing the 80% lower confidence bound of a 2 parameter Weibull distribution (ASTM D7290).

3 Design values may require additional reduction factors based on expected exposure conditions, type of application, and design life assumptions.

4 Contact FyfeFRP LLC engineers to confirm project specification values and design methodology.

Additional Composite Properties

Property4 ASTM Method

Typical Test Values Design Values

Flexural Strength D790

110,000 psi (758.4 MPa)

82,500 psi (568.8 MPa)

Flexural Modulus 8.5 x 106 psi (58.6 GPa)

7.0 x 106 psi (48.3 GPa)

Longitudinal Compressive Strength

D3410

50,000 psi (344.8 MPa)

42,500 psi (293 MPa)

Longitudinal Compressive Modulus

11.2 x 106 psi (77.2 GPa)

9.5 x 106 psi (65.5 GPa)

Longitudinal Coefficient of Thermal Expansion

D696

3.6 ppm/oF

Transverse Coefficient of Thermal Expansion 20.3 ppm/oF

INSTALLATION OF THE TYFO® SCH-41 SYSTEM

DESIGN

The Tyfo® SCH-41 system is designed to meet specific project criteria dictated by the engineer of record and any relevant building codes and/or guidelines. The design shall be based on the allowable strain for each type of application and the design modulus of the material.

FyfeFRP LLC engineering staff may provide preliminary design, specification wording and application details based on the project requirements.

INSTALLATION

The Tyfo® system is to be installed by FyfeFRP LLC trained and certified applicators in accordance with the FyfeFRP LLC quality control manual, project specifications, and design requirements. Tyfo SCH-41 is differentiated from the similar Tyfo SCH-41-2X as it does not have a red thread at the edge of the roll.

SURFACE PREPARATION

The required surface preparation is dependent on the type of element being strengthened. In general, the surface must be clean, dry and free of protrusions or cavities to prevent voids behind the Tyfo® system. Column surfaces that will receive continuous wraps typically only require a clean, sound substrate. Discontinuous wrapping surfaces (walls, beams, slabs, etc.) require a minimum CSP-2 profile to prepare for bonding, achieved by light sandblast, grinding or other approved methods per ICRI 310.2R. Tyfo® Composite Anchors may be incorporated in the designs. FyfeFRP LLC engineering staff will provide the proper specifications and details based on project requirements.

MIXING TYFO® S EPOXY

For pre-measured units in 5-gallon containers, pour the contents of component B into the component A container. Mix thoroughly with a low speed mixer at 400 to 600 RPM until uniformly blended. Ensure epoxy is transferred between the A and B buckets. For 55-gallon drums, mix component A and component B per the appropriate weight or volumetric mix ratio. Resin may be heated to achieve desired viscosity (i.e. radiant heating, drum heaters, water bath). Mixed Tyfo® S Epoxy may be thickened by adding up to 7 percent by weight of fumed silica (such as Cab-o-sil TS-720) or approved filler such as HDPE fibers. DO NOT THIN. Solvents will prevent proper cure.

PROTECTIVE COATINGS

Apply a final coat of thickened Tyfo® S Epoxy to all fabric edges, including butt splice, termination points and jacket edges. Paint between 24 and 72 hours after final application of epoxy. If more than 72 hours after application, prepare the surface by light sandblast or hand sanding to lightly etch the surface. Please refer to FyfeFRP LLC’s NSF Listing for the NSF-61G listed application method (www.NSF.org).

LIMITATIONS

Recommended substrate temperature range is 50°F to 100°F (10°C to 38°C). All coating applications to be performed at a minimum of 5.4°F above the dew point.

Maintain conditions for the first 48 hours of cure.

Temperatures below 50°F will significantly increase the viscosity of the mixed product. Higher viscosity will reduce fabric penetration, introduce additional air into the system, and extend the cure times beyond 48 hours. DO NOT THIN. Solvents will prevent proper cure.

CAUTION!

Statement of Responsibility: The technical information and application advice in this publication is based on the present state of our best scientific and practical knowledge. As the nature of the information herein is general, no assumption can be made as to the product’s suitability for a particular use or application, and no warranty as to its accuracy, reliability or completeness, either expressed or implied, is given other than those required by State legislation. The owner, his representative or the contractor is responsible for checking the suitability of products for their intended use. Field service, where provided, does not constitute supervisory responsibility.

Suggestions made by the FyfeFRP LLC, either verbally or in writing, may be followed, modified or rejected by the owner, engineer or contractor since they, and not the FyfeFRP LLC, are responsible for carrying out procedure appropriate to a specific application.

Consult safety data sheet (SDS) for more information.

For industrial use only.

Epoxy Material Properties

Cure schedule: 72 hour post-cure at 140°F (60°C)1

Property ASTM Method Typical Test Value

Glass Transition Temperature, Tg D4065/E1356 180°F (82°C)

Tensile Strength D638 Type 1

10,500 psi (72.4 MPa)

Tensile Modulus 461,000 psi (3.18 GPa)

Elongation 5.0%

Compressive Strength D695

12,500 psi (86.2 MPa)

Compressive Modulus 465,000 psi (3.2 GPa)

Flexural Strength D790

17,900 psi (123.4 MPa)

Flexural Modulus 452,000 psi (3.12 GPa)

Shore D Hardness D2240 87±3

Water Absorption (24 hours) Water Absorption (13 weeks) D570 0.33%

1.98%

Adhesion Strength2

Concrete (ASTM D7522) Steel Epoxy

D4541

>400 psi (concrete failure typ.)

>1200 psi >1200 psi

1 Testing temperature: 73°F (23°C).

2 Adhesion strength dependent on surface preparation and substrate thickness. Concrete adhesion strength is dependent on the concrete strength and is based on a minimum CSP-2 profile. Steel adhesion strength is based on SSPC-SP10 and SSPC-SP11 surface preparation methods. Cure schedule: 7 days at 73°F (23°C).

CLEANUP

Collect with absorbent material. Dispose in accordance with local disposal regulations. Uncured material can be removed with approved solvent. Cured materials must be mechanically removed.

HAZARDS

Consult the Safety Data Sheets (SDS) for associated hazards. SDS will be supplied upon request.

V: 07.20.2023© 2022 FyfeFRP, LLC. All rights reserved. Fyfe® and Tyfo® are the registered trademarks of FyfeFRP, LLC.

FyfeCo.com | FyfeInfo@cs-nri.com | +1.855.708.3617

TYFO® S

Saturant Epoxy

DESCRIPTION

The Tyfo® S Epoxy is a two-component epoxy matrix material for bonding applications. The Tyfo® S Epoxy combined with the Tyfo® fabrics make up the Tyfo® Systems which are NSF/ANSI Standard 61-G certified for drinking water systems. It is a high elongation material which gives optimum properties as a matrix for the Tyfo® system. It provides a long working time for application, with no offensive odor.

USE

The Tyfo® S Epoxy matrix material is combined with the Tyfo® fabrics to provide an ambient-cure wet-layup composite system for strengthening structural members. Tyfo® S Epoxy may be thickened with fumed silica or highly fibrillated HDPE (such as Cab-O-Sil TS-720 or Short Stuff® by MiniFibers) to be used as a primer, tack coat or finish depending on project requirements.

ADVANTAGES

• ICC-ES ESR-2103 listed product

• IAPMO UES ER-595 listed product

• Tyfo® Systems are NSF/ANSI Standard 61-G certified

• Good high and low temperature properties

• 100% solids, solvent-free

• Long working time

• High elongation

• Ambient cure

PACKAGING

Pre-measured 5-gallon units with a combined material volume of 4 gallons or in 55-gallon drums.

EPOXY MIX RATIO

100A : 34.5B by weight 100A : 42.0B by volume

CONSUMPTION RATE

Fabric-to-epoxy ratio by weight:

For Tyfo® SCH Fabrics: 1 : 1 For Tyfo® SEH Fabrics: 1 : 0.8

SHELF LIFE

Epoxy - two years in original, unopened and properly stored containers.

Fabric - 10 years in proper storage conditions.

STORAGE CONDITIONS

Store epoxy at 60°F to 100°F (15°C to 38°C). Resin is susceptible to crystallization at temperatures below 50°F. If crystallized, epoxy must be reheated until clear.

Store fabric rolls flat, not on ends, and at temperatures below 100°F (38°C). Avoid moisture and water contamination.

Epoxy Material Properties

Material properties are based on standard laboratory conditions (23oC, 50 percent relative humidity.)

Property Typical Test Value

Net Weight Component A Component B Mixed

27.4 lbs. (2.8 gal)

9.60 lbs. (1.2 gal)

37.0 lbs. (4.0 gal)

Color Component A Component B Mixed

Clear to amber Clear to yellow Clear to amber

Viscosity Component A Component B Mixed

11,000-13,000 cps 11 cps 600-700 cps

Density (D792) Pounds/Gallon

Component A Component B Mixed

9.7 (1.16 kg/L)

7.9 (0.95 kg/L)

9.2 (1.11 kg/L)

Pot Life (Working Time) Mixed 3 to 4 hours

Gel Time (Time to Gelation) Mixed 10 hours

1 Testing temperature: 73oF (23oC).

2 Adhesion strength dependent on surface preparation and substrate thickness. Concrete adhesion strength is dependent on the concrete strength and is based on a minimum CSP-2 profile. Steel adhesion strength is based on SSPC-SP10 and SSPC-SP11 surface preparation methods. Cure schedule: 7 days at 73°F (23°C).

Epoxy Material Properties

Cure schedule: 72 hour post-cure at 140oF (60oC)1

Property ASTM Method Typical Test Values

Glass Transition Temperature, Tg

D4065 E1356

180oF (82 C)

Tensile Strength

D638 Type 1

10,500 psi (72.4 MPa)

Tensile Modulus 461,000 psi (3.18 GPa)

Elongation 5.0%

Compressive Strength

D695

12,500 psi (86.2 MPa)

Compressive Modulus 465,000 psi (3.2 GPa)

Flexural Strength

D790

17,900 psi (123.4 MPa)

Flexural Modulus 452,000 psi (3.12 GPa)

Shore D Hardness D2240 87±3

Water Absorption (24 hours) Water Absorption (13 weeks)

D570 0.33% 1.98%

Adhesion Strength2

Concrete (ASTM D7522) Steel Epoxy

D4541 >400 psi (concrete failure typ.)

>1200 psi >1200 psi

HOW TO USE THE TYFO® S SATURANT EPOXY

INSTALLATION

The Tyfo® system is to be installed by FyfeFRP LLC trained and certified applicators in accordance with the FyfeFRP LLC quality control manual, project specifications, and design requirements.

SURFACE PREPARATION

The required surface preparation is dependent on the type of element being strengthened. In general, the surface must be clean, dry and free of protrusions or cavities to prevent voids behind the Tyfo® system. Column surfaces that will receive continuous wraps typically only require a clean, sound substrate. Discontinuous wrapping surfaces (walls, beams, slabs, etc.) require a minimum CSP-2 profile to prepare for bonding, achieved by light sandblast, grinding or other approved methods per ICRI 310.2R. Tyfo® Composite Anchors may be incorporated in the designs. FyfeFRP LLC engineering staff will provide the proper specifications and details based on project requirements.

MIXING TYFO® S EPOXY

For pre-measured units in 5-gallon containers, pour the contents of component B into the component A container. Mix thoroughly with a low speed mixer at 400 to 600 RPM until uniformly blended. Ensure epoxy is transferred between the A and B buckets. For 55-gallon drums, mix component A and component B per the appropriate weight or volumetric mix ratio. Resin may be heated to achieve desired viscosity (i.e. radiant heating, drum heaters, water bath).

Mixed Tyfo® S Epoxy may be thickened by adding up to 7 percent by weight of fumed silica (such as Cab-o-sil TS-720) or approved filler such as the Short Stuff, highly fibrillated HDPE fibers. DO NOT THIN.

Solvents will prevent proper cure.

THICKENED TYFO® S EPOXY

Use Cab-o-sil TS-720 by Cabot Corp. or similar. For horizontal and vertical surfaces, use up to 2.0 lbs. fumed silica per kit or 5.4 percent by weight. For overhead surfaces use up to 2.5 lbs. per kit or 6.7 percent by weight. Site conditions may affect the amount of fumed silica required to achieve desired thickness. Do not exceed 7 percent by weight.

Short Stuff by MiniFibers, Inc. can be used as an approved alternate to Cab-o-sil TS-720. Use up to 2.6 lbs. of the highly fibrillated HDPE per kit. Do not exceed 2.6 lbs. per kit.

APPLICATION

Tyfo® S Epoxy is applied to the Tyfo® fabric using a saturator machine or by approved manual saturation methods (trowel, roller, or similar).

Hand saturation is allowable, provided the epoxy is applied uniformly and meets the required fiber-to-epoxy ratio. Tyfo® S Epoxy is applied as a prime coat by brush or roller. Please refer to FyfeFRP LLC’s NSF Listing for the NSF 61-G listed application method (www.NSF.org).

LIMITATIONS

Recommended substrate temperature range is 50°F to 100°F (10°C to 38°C). All coating applications to be performed at a minimum of 5.4°F above the dew point. Maintain conditions for the first 48 hours of cure. Temperatures below 50°F will significantly increase the viscosity of the mixed product. Higher viscosity will reduce fabric penetration, introduce additional air into the system, and extend the cure times beyond 48 hours. DO NOT THIN. Solvents will prevent proper cure.

CAUTION!

Statement of Responsibility: The technical information and application advice in this publication is based on the present state of our best scientific and practical knowledge. As the nature of the information herein is general, no assumption can be made as to the product’s suitability for a particular use or application, and no warranty as to its accuracy, reliability or completeness, either expressed or implied, is given other than those required by State legislation. The owner, his representative or the contractor is responsible for checking the suitability of products for their intended use. Field service, where provided, does not constitute supervisory responsibility. Suggestions made by the FyfeFRP LLC, either verbally or in writing, may be followed, modified or rejected by the owner, engineer or contractor since they, and not the FyfeFRP LLC, are responsible for carrying out procedure appropriate to a specific application.

Consult safety data sheet (SDS) for more information.

For industrial use only.

CLEANUP

Collect with absorbent material. Dispose in accordance with local disposal regulations. Uncured material can be removed with approved solvent. Cured materials must be mechanically removed.

HAZARDS

Consult the Safety Data Sheets (SDS) for associated hazards. SDS will be supplied upon request.

V: 03.29.2023© 2023 FyfeFRP, LLC. All rights reserved. Fyfe® and Tyfo® are the registered trademarks of FyfeFRP, LLC.

FyfeCo.com | FyfeInfo@cs-nri.com | +1.855.708.3617