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Crack Injection 108 CRACK-PAC ® Injection Procedure for Crack-Pac ® Flex-H 2 0 crack sealer 1. Follow cartridge preparation instructions on the cartridge label. Verify that the material fl owing from the nozzle is a uniform green color. 2. Attach the E-Z-Click fi tting to the end of the nozzle by pushing the tubing over the barbs at the end of the nozzle. Make sure that all ports are pushed in to the open position. 3. Attach the E-Z-Click injection fi tting to the fi rst E-Z-Click port until it clicks into place. Make sure that the head of the port is pushed in to the open position. In vertical applications, begin injection at the lowest port and work your way up. In a horizontal application start at one end of the crack and work your way to the other end. 4. Inject polyurethane into the fi rst port until material shows at the next port. Remove the E-Z-Click fi tting by bracing the base of the port and pulling out gently on the head of the port to close it. Pulling too hard may dislodge the port from the surface of the concrete, causing a leak. Depress the metal tab on the head of the E-Z-Click fi tting and remove it from the port. 5. Move to the next port and repeat until all ports have been injected. Troubleshooting FLEX-H2O Injection Guide Polyurethane is fl owing into the crack, but not showing up at the next port. This can indicate that either the crack expands and/or branches off under the surface of the concrete. Continue to inject and fi ll these voids. Back pressure is preventing polyurethane from fl owing. This can indicate several situations: • The crack is not continuous and the portion being injected is full. • The port is not aligned over the crack properly. • The crack is blocked by debris. Polyurethane is leaking from the pasted-over crack or around injection ports. Stop injecting. If using a fast cure paste-over material (ETR or CIP), wipe off the leaking injection epoxy with a cotton cloth and re-apply the paste over material. Wait a approximately 10–15 minutes to allow the paste-over to begin to harden. If the leak is large (e.g. the port broke off of the concrete surface) it is a good idea to wait approximately 30 minutes, or longer as necessary, to allow the paste-over to cure more completely. Check to see that the paste-over is hard before reinjecting or the paste-over or ports may leak. Another option for small leaks is to clean off the injection adhesive and use paraffi n or crayon to seal the holes. 3 4 Injection Tips • For narrow cracks it may be necessary to increase the pressure gradually until the polyurethane begins to fl ow. It may also be necessary to wait a few minutes for the material to fi ll the crack and travel to the next port. • If desired, once the polyurethane has cured, remove the injection ports and paste-over epoxy or hydraulic cement. The paste-over can be removed with a chisel, scraper or grinder. More polyurethane is being used than estimated. This may indicate that the crack either expands or branches off below the surface. Continue to inject and fi ll these voids. Less polyurethane is being used than estimated. This may indicate that the crack is shallower than originally thought, or the polyurethane is not penetrating the crack suffi ciently before moving to the next port. C-SAS-2009 © 2009 SIMPSON STRONG-TIE COMPANY INC.
C-SAS-2009 © 2009 SIMPSON STRONG-TIE COMPANY INC. CRACK REPAIR ACCESSORIES Crack Repair Accessories EMN022 – Opti-Mix ® Mixing Nozzle The Opti-Mix ® static mixing nozzle is specifi cally designed for crack injection epoxies and ensures thorough mixing of epoxy components: • For use with both low viscosity and gel viscosity ETI formulations. • Flow regulators ensure that resin and hardener fl ow at equal rates and prevent mixed epoxy from fl owing back out of the nozzle into the cartridge. This ensures thorough mixing and prevents mixed product from curing in the neck of the cartridge, causing blockage. Testing shows that mixing with the Opti-Mix nozzle is 4 times more consistent than a standard spiral mixing nozzle. • For use with pneumatic, battery and manual dispensing tools. • Half the length of standard spiral mixing nozzles, allowing easy access in cramped conditions and reducing waste. • Barbed end allows easy attachment to the E-Z-Click injection fi tting. • When dispensing low viscosity material, using a standard spiral mixing nozzle and a manual dispensing tool, resin and hardener surge unevenly through the nozzle without being thoroughly combined. The result is poorly mixed epoxy that will not fully cure and will not effectively repair the crack. The Opti-Mix nozzle corrects this problem utilizing unique mixing elements and a fl ow regulator that allows the use of a manual tool with low viscosity epoxy. E-Z-Click Injection System The E-Z-Click injection system is comprised of a specially designed fi tting and ports that take the mess out of your repair project while allowing you to work faster. The E-Z-Click injection fi tting installs onto the end of the Opti-Mix mixing nozzle and clicks onto the E-Z-Click ports during injection. • Positive connection eliminates messy leakage, minimizing waste and clean-up. • No drilling of ports: E-Z-Click ports perform while pasted to the surface of the concrete. No drilling required for most applications. • Disconnect the fi tting and the epoxy stops fl owing, no leaky mess. • After injecting, pull the head of the E-Z-Click port out to close it and prevent leakage. • One person can work faster without having to hold the tube on the port. ETR Epoxy Paste-Over Ideal for pasting over the surface of cracks and attaching ports for pressure injection. The non-sag paste consistency enables paste-up on horizontal, vertical and overhead applications. Fast cure time means shorter time between paste-over and injection. Packaged as a kit in separate 8 oz. canisters which are mixed manually to yield 16 ounces of epoxy. Also ideal for small concrete repair application: spall repair and misc. patching. Each kit contains enough material to cover approximately 8 lineal feet of cracks. CIP Paste-Over CIP is a fast-curing, two-part epoxy paste over material. It is used to seal cracks and to secure injection ports over concrete prior to epoxy or urethane foam injection repair. CIP sets up hard and can either be left on the concrete or ground or chiseled off at the completion of a crack injection job. CIP-F Paste-Over CIP-F is a fl exible, peelable and fast-curing polyurea paste-over material. It is used to temporarily seal cracks and to secure injection ports over concrete prior to epoxy or urethane foam injection repair. CIP-F can be peeled off at the completion of a crack injection job by pulling on starter tabs placed under the lead edge surface at the time of application or by prying under the paste-over. Crack Repair Accessories Product Data Description Model No. Pkg. Qty. Ctn. Qty. (ea.) 6 Opti-Mix ® mixing nozzles for ETI epoxies (6¹⁄₂" long, ³⁄₈" square). Includes retaining nuts. 1 EMNO22-RP6 6 30 (5 Packs) 100 standard E-Z-Click flush mount injection ports (not compatible with CIP-F paste-over) EIP-EZ • 100 20 standard E-Z-Click flush mount injection ports and 1 E-Z-Click injection fitting (not compatible with CIP-F) 100 stiff-flange E-Z-Click flush mount injection ports EIP-EZKT • 5 Kits and 1 E-Z-Click injection fitting (compatible with all Simpson Strong-Tie paste-overs) 20 stiff-flange E-Z-Click flush mount injection ports EIP-EZA • 100 and 1 E-Z-Click injection fitting (compatible with all Simpson Strong-Tie paste-overs) EIP-EZAKT • 5 Kits 20 E-Z-Click corner mount/drilled-in injection ports2 EIPX-EZ-RP20 20 100 (5 Packs) 20 E-Z-Click corner mount/drilled-in injection ports and 1 E-Z-Click injection fitting2 EIPX-EZKT • 5 Kits E-Z-Click injection fitting EIF-EZ 1 10 ETR Kit containing 1 8-oz. canister of resin and 1 8-oz. canister of hardener ETR16 • 4 Kits 1. Use only appropriate Simpson Strong-Tie ® mixing nozzle in accordance with Simpson Strong-Tie instructions. Modification or improper use of mixing nozzle may impair epoxy performance. 2. EIPX intended for use as a surface mount port in corners and a drilled-in port on flat surfaces. All accessories compatible with ETI-LV and ETI-GV epoxies. Crack Injection Paste-Over in Cartridge Delivery System Model No. Capacity ounces (cubic inches) Opti-Mix ® Mixing Nozzle ETR16 Cure Schedule - ETR and CIP Base Material Temperature °F °C Cure Time 40 4 24 hrs. 60 16 2 hrs. 80 27 1 hr. 100 38 1 hr. Cartridge Type E-Z-Click Ports and Injection Fitting EIP-EZA Flush Mount Port (EIP-EZ similar in appearance) Carton Quantity CIP 22 (39.7) side-by-side 10 CIP-F 22 (39.7) side-by-side 10 1. Use only appropriate Simpson Strong-Tie mixing nozzle in accordance with Simpson Strong-Tie instructions. Modifi cation or improper use of mixing nozzle may impair paste over performance. 2. Each cartridge contains enough material to cover approximately 8 lineal feet of cracks. 3. CIP-F can be dispensed without the mixing nozzle and mixed by hand using a mixing board and putty knife. Cure Schedule - CIP-F Base Material Temperature CureTime °F °C 40 4 3 hrs. 72 22 1 hrs. CIP Dispensing Tool(s) EDT22B, EDT22AP, or EDT22CKT EDT22B, EDT22AP, EDT22CFT E-Z-Click Injection Fitting EIPX-EZ Corner Mount/ Drilled-In Port Mixing Nozzle EMN22 included CIP-F Detailed information on the full line of Simpson Strong-Tie ® manual and pneumatic dispensing tools is available on pages 87–88. Crack Injection 109
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Epoxy Adhesives 34 SET-XP Structur
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