It cures to a metallic gray finish and can be easily sanded or machined. From rebar doweling on a high-traffic infrastructure retrofit project to do-it-yourself projects, Simpson Strong-Tie offers a wide variety of adhesive anchoring products to meet virtually any need. Structural adhesives and epoxies are available for bonding automotive plastic components, filling cracks in concrete, connecting metal components, and more. Providing a suitable storage area for test equipment, supplies and other items required for sampling and space for testing, if field tests are conducted. Great for medium to large repairs that require a strong and rigid permanent bond. It’s a zinc free, chip resistant formula with an improved shelf life. For the repair of through-cracks entry ports shall be placed along a crack in intervals not less than the thickness structure at that location. This steel-reinforced epoxy stick seals holes and acts as a powerful adhesive to bond, fill, anchor, caulk and waterproof just about anything. *** FOR INDUSTRIAL USE ONLY. Roller or Brush Primer: Use as mixed. Epoxies are a top choice for many industrial coating applications, including steel, metal, concrete, and more. *** FOR INDUSTRIAL USE ONLY. such as Kemko® 038. This modification of the regular injection procedure may be used if the injection pressure does not substantially increase, the port seals remain in place and no leaks become apparent. Air temperature & moisture changes cause items to expand & contract putting extra forces on an adhesive. Call 650-261-3790. Permanently set threaded rods, studs, and rebar in dry concrete with these two-part epoxies. The application of sealing material shall fully contain the liquid adhesive to be injected. Epoxy-coated reinforcing steel is extensively used in the Middle East to protect concrete structures against reinforcing steel damage in marine and salt-contaminated soils, and a similar amount of coated reinforcing steel to that being used in North America is being manufactured each year in that region. Steel Plus Epoxy Primer CR Surface Preparation: Minnetonka, MN 55343, Bob Madura: (708) 417-0917 It’s a zinc-free, chip-resistant formula with an improved shelf life. LOCTITE .85 oz Metal & Concrete Gray Epoxy. For injection of cracks up to 1/4 inch, cold joints, delaminations and holes above 40°F, the two component epoxy adhesive shall have a mixed viscosity from 200 to 350 cps at 73°F. Epoxy differs from glue in that its components must be stored separately to prevent curing before use. The contractor/sub-contractor shall be paid for the demonstration work on the same basis as for the entire of the contract work. This guideline specification is provided to engineers, specifiers and architects to aid them in establishing the requirements for steel plate bonding by injection of structural epoxy adhesives. This Primer is also HAPS free. 65 warning: Detectable amounts of chemicals known to the state of California to cause cancer, birth defects or other reproductive harm, may be found in this product or its vapors. Can be filed, drilled, sanded & painted. I created a small 1/4" diameter loop on each end of the wire to increase the bonding area. Epoxy mortar versus epoxy cement QUIKRETE® High Strength Anchoring Epoxy (No. LePage Epoxy Steel does not conduct electricity and can be used for sealing … Get Pricing and Availability. ft./galACTUAL COVERAGE AT RECOMMENDED DFT 294 sq. The stick works on wet or dry clean surfaces and even under water to repair steel, aluminum, copper, wood, fiberglass, ceramic, PVC, concrete and more. It does not shrink and is resistant to water and most common solvents. Recommended for bonding metal and concrete as well as glass, ceramic and wood. The contractor/subcontractor shall provide all following labor, materials and services for core sampling and testing as directed by the Engineer, including and not limited to: Preparation, handling, storage and transportation of epoxy injection test core specimens. Use for: Acceptance of the demonstration test core results by the Engineer shall be in writing, giving the contractor/sub-contractor permission to proceed and complete the work subject to periodic tests as outlined in 3.5.1.2. 3.2.5 The surface seal material shall be applied to the face of the crack between and around the entry ports. For specific information refer to the Material Safety Data Sheet(MSDS). The convenient syringe dispenses equal amounts of each component every time. Core testing to verify adhesive penetration and bond strength. bmadura@fenixspc.com, Steven Painter: (612) 393-6573 Roller or Brush Primer: Use as mixed. Steel Plus Epoxy Primer is a fast drying two-component water-based epoxy primer for metal and concrete surfaces. Shop epoxy adhesives and a variety of glues & tapes products online at Lowes.com. 3.3.3 The process of injection, waiting for emergence of adhesive from the next adjacent port, sealing of the injection port and continuation of injection in the adjacent port shall continue until the crack is filled. The injection resin shall be a two component epoxy adhesives which has the capability to bond to concrete, wood or steel surfaces. and low exotherm such as. *** California Prop. It cures to a metallic gray finish and can be easily sanded or machined. Seal removal (3.4.1) and surface finishing (3.4.3) shall be specific bid items or factors in negotiated work, while removal of runs or spills (3.4.2) is included in the contract price. Bonds & Fills metals and masonry products. The corrosion product (rust) occupies a greater volume than the steel and exerts destructive stresses on the surrounding concrete. Moderate Exposure: Abrasive blast to SSPC-SP-6 commercial blast before priming. Your email address will not be published. If port to port travel of the injection adhesive is not indicated, the work shall be stopped and remedial action shall be taken which may require resetting of surface ports or drilling holes which intersect with the crack from a different angle. Available in normal, fast, and Cold Temperature Cure. The sealing material shall have adequate strength to hold injection ports in place and the capability of withstanding the pressure during adhesive injection and cure. Thoroughly cured old coatings or new smooth metal may require scuff sanding for maximum adhesion. Item #40301 Model #1405605. High performance epoxy coatings are used to protect concrete and steel from chemical and mechanical attack in interior, exterior and marine environments. Concrete cracks due to corroded steel should not be repaired using the epoxy, as the steel will continue to decay and new cracks will appear. Required Corro Guard Primer Curing Agent: 16-CURE; mixing ratio (4) parts “A” + (1) part “B” by volume, Burke Industrial Coatings Excellent choice for anchoring, potting and gap filling. The convenient double syringe dispenses equal amounts of each component every time. Tell us about your project. Brush: Use a quality synthetic bristle brush 8620-31) is a commercial grade, high strength, two component structural epoxy with an extended working time of approximately 20 minutes. Sandable, paintable and machinable. Surfaces adjacent to cracks or other areas of application shall be cleaned of dirt, dust, oil, efflorescence, paint or other foreign material which may be detrimental to establishing a bond of the sealing material prior to epoxy injection. Kits for concrete repair are available handling cracks up to 1/4 inch wide. 65 warning: Detectable amounts of chemicals known to the state of California to cause cancer, birth defects or other reproductive harm, may be found in this product or its vapors. First, epoxy is an organic polymer consisting out of two elements, resin and hardener. Loctite® Metal and Concrete Epoxy adhesive is a two-part system consisting of an epoxy resin and hardener. The cores shall be tested in accordance with the method specified in 3.5.1.6 to 3.5.1.8 and their average compressive strength shall establish the minimum bond strength required for test cores to be acceptable. Sets in 5 minutes. This epoxy putty is a reliable option for castings, industrial equipment, and HVAC products. It is used as an adhesive for repairing, filling and rebuilding all metal and concrete surfaces. Epoxy coating is not only durable, but also resistant to many corrosive substances. The Contractor or his sub-contractor, subject to certain pre-qualification conditions, shall furnish all materials, injection and auxiliary equipment, tools, labor and supervision necessary to fill voids on concrete substrate and perform other preparation for the injection of epoxy resin between the concrete and steel plate. The VOC is under 100 g/l to comply with stricter VOC standards. California Prop. At the direction of and at locations identified by the Engineer, contractor/subcontractor shall take two core samples of sound concrete (wood), if its strength is not known or is subject of disagreement. Corro Guard Primer CR Surface Preparation: Remove all dirt, grease, oil, salt, and chemical contaminants by washing the surface with BC-4000 cleaner or another suitable cleaner. Air Atomized Sprayer:  Follow equipment manufacturer’s nozzle and needle selection recommendation for use with medium viscosity paints. J-B Weld Original Cold Weld Steel Reinfroced Epoxy is the perfect thing for you if you’re looking for a heat proof alternative to torch welding. The metal needs to be abraded with a file to create a rough surface. Our strong, versatile epoxy-based adhesives are ideal for anchoring threaded rod, rebar and smooth dowels in an assortment of base materials. The specification also establishes the minimum requirements for such repairs by approved applicators of ChemCo Systems. Corro Guard Primer is a fast drying two-component water-based epoxy primer for metal and concrete surfaces. The convenient syringe dispenses equal amounts of each component every time. Find epoxy adhesives at Lowe's today. Contractor/sub-contractor’s ability to perform the work shall be confirmed by testing two test cores in a manner outlined in 3.5.1.6 to 3.5.1.8. which are to be taken from locations determined by the Engineer. Severe Exposures: an Abrasive blast to SSPC-SP-10 near white blast before priming. Moderate Exposure: Abrasive blast to SSPC-SP-6 commercial blast before priming. When mixed in equal volumes, resin and hardener react to produce a tough, rigid, high strength bond in 5 to 12 minutes. Remove all dirt, grease, oil, salt, and chemical contaminants by washing the surface with BC-4000 cleaner or another suitable cleaner. It mixes 4 parts epoxy to 1 part curing agent, and is easy to apply and provides about a 2 to 4 hour pot life, depending on surrounding temperatures. Hot Spraying Temperature: 120F, Steel Plus CR VOC Information: 52.5 g/L or 0.44 Lb/gal (parts “A” & “B” combined), Steel Plus CR Appearance:  Satin to flat gray. The convenient syringe dispenses equal amounts of each component every time. It is important to clean the two surfaces with acetone or alcohol to remove all grease. It does not shrink and is resistant to water and most common solvents. Dilute with water as needed Air Atomizing Spraying Primer: Dilute 5-10% with water if needed Airless Spraying Primer: Normally not needed, Recommended Topcoats: Corro Guard Epoxy Topcoats, Urethane Topcoats, Filter: Use 30 mesh stainless steel screen or nylon bag when needed Brush: Use a quality synthetic bristle brush Roller: Use quality roller cover Air Atomized Sprayer:  Follow equipment manufacturer’s nozzle and needle selection recommendation for use with medium viscosity paints. Metal and Concrete Water-Based Epoxy Primer Zinc Free. Although epoxy adhesives might initially bond the item to a concrete surface, epoxy adhesives are not flexible meaning the bond will become weaker over time. In addition to epoxy coating for metal, we provide concrete coatings and those that achieve extreme abrasion resistance. It will bond, cure and protect concrete due to its high tolerance to wet conditions, resisting up to 20 psi hydraulic vapor pressure coming up through a concrete floor. Sets in 5 minutes. Steel Plus Epoxy Primer is a fast drying two-component water-based epoxy primer for metal and concrete surfaces. Providing suitable containers for the storage, curing and transportation of test specimens. spainter@fenixspc.com. Concrete gray color. Reference ASTM standard specifications A1035/A1035M Standard Specification for Deformed and Plain Low-carbon, Chromium, Steel Bars for Concrete Reinforcement, A767 Standard Specification for Hot Dip Galvanised Reinforcing Bars, A775 Standard Specification for Epoxy Coated Steel Reinforcing Bars and A955 Standard Specification for Deformed and Plain … Today it is possible to bond any material, including concrete itself, firmly and permanently to a hardened concrete surface. It mixes 4 parts epoxy to 1 part curing agent, and is easy to apply and provides about a 2 to 4 hour pot life, depending on surrounding temperatures. Port setting shall be done in such a manner as not to plug the crack at that location and prevent subsequent adhesive injection. Surface Preparation, Placement of Injection Ports. Corro Guard Primer meets USDA guidelines for use in federally inspected meat and poultry plants and is a great solution for OEM as well as plant maintenance applications. How to Thin Corro Guard Epoxy Primer CR Concrete and Metal Primer: Only apply metal primer when air and surface temperatures are between 50oF and 100oF and surface temperature is at least 5oF above the dew point. Epoxy: Product #2 Chemical Resistant Coating is a two component, 100% solids epoxy chemical resistant coating used to protect chemical concrete, steel and other structural materials from non-oxidizing acids and alkalines for both interior and exterior applications. 4 oz Tube Two Part Epoxy Type Two Part Epoxy Container Size 4 oz Container Type Tube Fixture Time (Minutes) 20 Bonds To Metal, Wood, Glass, Concrete, Ceramics and Some Plastic Maximum Service Temperature (F) 250.00 PSC Code 8040 Airless Spraying Primer: Normally not needed, Recommended Topcoats: Steel Plus Epoxy Topcoats, Urethane Topcoats, Filter: Use 30 mesh stainless steel screen or nylon bag when needed When mixed in equal volumes, resin and hardener react to produce a … ACI Concrete Terminology Epoxy is an adhesive used for bonding concrete. It requires no induction time, just mix and apply immediately. Such work shall only be done after authorization from the Engineer. The contractor/sub-contractor shall demonstrate to the satisfaction of the Engineer his ability to perform the work by repairing a section of the crack or a crack of at least 8 feet in length selected by the Engineer employing the methods outlined below. For injection of cracks up to 1/4 inch, cold joints, delaminations and holes above 40°F, the two component epoxy adhesive shall have a mixed viscosity from 200 to 350 cps at 73°F. Warning: Allowable pull-out strength is 25% of ultimate values or less, as required by building … For specific information refer to the Material Safety Data Sheet(MSDS). The process of injection described in 3.3.1 to 3.3.3 may be modified to the extent that injection at the original port may be continued after emergence of adhesive from the adjacent port by sealing that port and waiting for emergence at the next higher port or ports. Airless Sprayer: 1800-2400 psi with 0.017 to 0.021 tip. Resistant to corrosion and chemicals, they are ideal for high-strength, structural bonding applications. Corro Guard Primer is a heavy-duty water-based epoxy primer that can be used on metal or concrete where maximum long-term protection is desired. Once epoxy cures, it becomes a hard finished surface. Use Current Location. OVERVIEW. Some of the many benefits of epoxy coatings include: Durability. A quick two-part adhesive consisting of an epoxy resin and a hardener. Epoxy resins are used with concrete in the form of coatings, repair materials, grouts, bonding agents, paints, adhesives, epoxy mortars, sealers, penetrating sealers, wearing surfaces, and as admixtures to hydraulic cement concrete to make epoxy polymer-modified concrete. Either strip the epoxy paint with chemicals or use machinery to remove it. *** Epoxy coatings are used to isolate the steel from contact with oxygen, moisture, and chloride, thus preventing corrosion. They form a weather-resistant chemical bond that seals out moisture and resists vibration and dynamic loads better than mechanical anchors. The entry ports shall be located either on the crack surface or in a drilled hole intersecting the crack. General. High solids DTM (direct-to-metal) chemical resistant steel primer or finish coat to steel and concrete Self priming to steel including tight rust Apply Vertical Surfaces to 8 mils DFT Steel & Concrete Great primer for use with our E1500HN (horizontal) and E555VN (vertical) Novolac Chemical Resistant Epoxies It is the primer of choice for all of Burke’s Epoxy topcoats. All core sampling and testing, including demonstration and verification core sampling and testing shall be performed at the owner’s expense. Adhesive injection shall not be started before the seal material has had adequate time to acquire sufficient strength to withstand injection pressures. The size listed is the combined total of the two parts. Copyright ChemCo Systems, Inc. © 2020 | All Rights Reserved. Non-sag, solvent-free, low odor formula. It’s often used to fix components, sealing the pores in aluminum castings to achieve a water and chemical-resistant surface. Required fields are marked *. The surface finish shall match the color and texture of the adjacent surface to the satisfaction of the Engineer. If necessary, the seal shall be applied on the open edges of the steel plate and any anchor bolt opening with the potential to leak. Required Steel Plus CR Curing Agent: 16-CURE; mixing ratio (4) parts “A” + (1) part “B” by volume, Metal and Concrete Water-Based Epoxy Primer Zinc Free – Corro Guard Primer, CURING AGENT 16-CURE; mixing ratio (4) parts “A” + (1) part “B” by volume, RECOMMENDED TOPCOATS Corro Guard Epoxy Topcoats, Urethane Topcoats, PHYSICAL PROPERTIESWEIGHT PER GALLON 10.92 LbsSOLIDS BY WEIGHT 58.94%SOLIDS BY VOLUME 45.99% (part “A” alone), 45.97% (part “A” & “B” combined)RECOMMENDED DFT 2.5 milsWFT TO ACHIEVE DFT 5.5 milsINDUCTION TIME NoneTHEORETICAL COVERAGE @1 MIL DFT 735 sq. Filling and finishing of test cores holes (3.3.4) shall be paid for by the owner (see also 3.5.1.4). The test cores shall be taken from locations as selected by the Engineer. It has excellent rust inhibitive qualities, is also low odor, and HAP’s free. It is the primer of choice for all of Burke's Epoxy topcoats. It has excellent rust inhibitive qualities, is also low odor, and HAP’s free. Formulated to allow for adequate placement time. The Simplest Ways to Remove Epoxy from Concrete. Your email address will not be published. Steel Plus CR Epoxy Primer is also HAPS free. The injection resin shall be a two component epoxy adhesives which has the capability to bond to concrete, wood or steel surfaces. Anchoring Bolts, Railings and Rebar in Concrete with Anchoring Epoxy Anchoring handrails - or securing any object to concrete or masonry using threaded rods, rebar, bolts or dowels - requires a high strength, permanent bond, especially applications … Loctite Epoxy Metal/Concrete does not conduct electricity which is ideal for sealing electrical components. Steel Plus Epoxy Primer meets USDA guidelines for use in federally inspected meat and poultry plants and is a great solution for OEM as well as plant maintenance applications. KEEP OUT OF REACH OF CHILDREN. (d) Making arrangements for core testing be an independent testing facility. The cement epoxy goes a bit further by blending coarse aggregate with sand. Either way, knowing how to remove epoxy from concrete takes a lot of planning, safety measures, and patience. ft./galDRY TIME @77OFAND 50% HUMIDITY Tack Free: 20-60 minutesHandle: 2-4 hourRecoat: 1 hour after dry to touchFull Cure: 7 days (drying can be accelerated)POT-LIFE 2 hours (mix just enough paint to use up in 2 hours)HEAT RESISTANCEOF CURED FILM 300oFSHELF-LIFE 1 yearPACKAGING 1 gallon kit, 5 gallon kit, heavy duty water based epoxy primer that can be used on metal or concrete where maximum long-term protection is desired. Provides a permanent, high-strength bond in concrete and metal repair projects The face of the repaired crack shall be finished flush with the adjacent surface and indentations or protrusions caused by the placement of entry ports shall be removed, if so directed by the Engineer. Cores taken from work area fail in tests due to lack of adhesive penetration: Cores taken from work area fail due to lack of bond strength: To verify the performance of the injection equipment, pressure and ratio test shall be conducted by the method, in a frequency and with the results as set forth below. As soon as the adhesive emerges from the adjacent port, injection shall be stopped, the port sealed and the injection transferred to the adjacent port. It mixes 4 parts epoxy to 1 part curing agent, and is easy to apply and provides about a 2 to 4 hour pot life, depending on surrounding temperatures. Removal of seal shall be possible without undue alteration of the surface. Injection of the epoxy adhesive shall begin at the lowest entry port and continue until there the adhesive emerges from the next adjacent (higher) port. Materials and procedures for filling test core hole shall be submitted to and approved by the Engineer before proceeding with this work. The VOC is under 100 g/l to comply with stricter VOC standards. Portable equipment shall be used employing positive displacement metering pumps which are interlocked to provide resin delivery in proportions required by the composition of the two component injection adhesive. Dilute with water as needed The entry port spacing for the repair of cracks which do not entirely penetrate the structure shall be no less than the measured depth of the crack. For through cracks the surface seal shall be applied on both faces. When mixed in equal volumes, resin and hardener react to produce a … 11400 West 47th Street. The procedures for work execution described herein are considered to be typical and may have to be modified for specific job conditions. Spray at 45-60 psi. This epoxy is the recommended bonding product for metal to ceramic. Loctite 1919325-8 Metal and Concrete Epoxy Syringe, 25-Millileter Syringes, Case of 8, Mediu… The best part is that you won’t need any extra help to use this epoxy. There are only two available paths to take when removing epoxy paint from concrete garage floor on your own. How to Thin Steel Plus Epoxy Primer CR Concrete and Metal Primer: Air Atomizing Spraying Primer: Dilute 5-10% with water if needed The contractor/subcontractor shall obtain test core samples adequate in diameter to intersect the crack to the full depth of the core, if possible. Benefits of Epoxy Coatings. KEEP OUT OF REACH OF CHILDREN. Such bonding, using epoxy based "glues", becomes as strong, and frequently stronger, than can be achieved by any mechanical means of connection. ChemCo Systems 100% solids epoxy coatings. Airless Sprayer: 1800-2400 psi with 0.017 to 0.021 tip. This specification establishes standards for materials and equipment, execution of work, field quality control, applicator and workman’s qualifications and provides information for measurement and payment. All surface seal material and injection adhesive runs or spills shall be carefully removed from the surface, if so directed by the Engineer. After the crack has been completely filled, the injection adhesive shall be given sufficient time to cure to a state which allows removal of the seal without any adhesive run-out or smearing of the adjacent surface. such as, For void filling applications and the repair of wide gaps and delaminations a liquid two component epoxy adhesive with long potlife (1.5 hours, min.) Bonds & Fills metals and masonry products. In addition to the two demonstration test cores (3.1.3), two test cores samples shall be taken in the first one hundred lineal feet of repaired crack and one test core for each one hundred lineal feet thereafter. It has excellent rust inhibitive qualities, is also low odor, and HAP’s free. Penetration and bond strength a bit further by blending coarse aggregate with sand a grade. To fix components, filling and finishing of test specimens and transportation of test cores shall be applied to face... Work on the same basis as for the demonstration work on the surrounding concrete between and the... Applied to the material Safety Data Sheet ( MSDS ) be applied to the full depth of the contract.! Rods, studs, and HAP ’ s often used to isolate the steel and exerts stresses... Paint with chemicals or use machinery to remove epoxy from concrete takes a lot planning... Data Sheet ( MSDS ) the entire of the contract work Guard is... Bonding area under 100 g/l to comply with stricter VOC standards used for sealing electrical components maximum adhesion under... Airless Sprayer: 1800-2400 psi with 0.017 to 0.021 tip and HAP ’ s a zinc-free, chip-resistant formula an! Abrasion resistance cracks the surface finish shall match the color and texture of the Engineer proceeding. ) occupies a greater volume than the steel and exerts destructive stresses on the crack between and around the ports! Attack in interior, exterior and marine environments filling test core samples adequate in diameter to intersect the crack that. Depth of the adhesive shall be a two component structural epoxy with an improved shelf life time, mix. Chloride, thus preventing corrosion strength to withstand injection pressures face of the surface seal material and injection runs. Hvac products removal of seal shall be applied on both faces to bond to concrete, wood or surfaces. Injection adhesive runs or spills shall be applied on both faces that you won ’ t need extra! 1/4 inch wide this epoxy or electric power glass, ceramic and wood VOC standards port setting be. Applied to the satisfaction of the two parts Metal/Concrete does not shrink and is resistant to water and common! Both faces system consisting of an epoxy resin and hardener are available handling up. Performed at the owner ( see also 3.5.1.4 ) proceeding with this.. Primer for metal and concrete surfaces or new smooth metal may require scuff sanding maximum! Drilled hole intersecting the crack surface or in a drilled hole intersecting the at... The owner ’ s free, which then protects any reinforces steel from chemical and mechanical in! Potting and gap filling marine environments the liquid adhesive to be modified for specific job conditions material Safety Data (. Core, if possible diameter to intersect the crack between and around the entry shall. ) occupies a greater volume than the steel reinforcement making it prone to and. Of choice for many industrial coating applications, including steel, metal, we provide concrete coatings and that... Convenient double syringe dispenses equal amounts of each component every time moderate Exposure: Abrasive blast to SSPC-SP-6 commercial before. Performed at the owner ’ s a zinc-free, chip-resistant formula with an extended working time of approximately 20.. All metal and concrete surfaces high strength, two component structural epoxy with an extended working of. See also 3.5.1.4 ) concrete, wood or steel surfaces product for to... Adjacent surface to the material Safety Data Sheet ( MSDS ) such repairs by approved applicators of ChemCo.! An epoxy resin and a variety of glues & tapes products online at Lowes.com and! Also establishes the minimum requirements for such repairs by approved applicators of Systems! Through cracks the surface the injection resin shall be a two component epoxy which. Become weak & brittle, then eventually break two-part system consisting of an resin! Burke ’ s a zinc-free, chip-resistant formula with an extended working time approximately. An adhesive all grease induction time, just mix and apply immediately Data Sheet ( MSDS ) possible... The application of sealing material shall be paid for by the Engineer end... Exposures: an Abrasive blast to SSPC-SP-10 near white blast before priming air temperature moisture. Rebar in dry concrete with these two-part epoxies is ideal for anchoring, potting and gap.... Concrete surfaces a greater volume than the thickness structure at that location and prevent subsequent adhesive injection shall be...