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Crack Injection 106 CRACK-PAC ® CARTRIDGE PREPARATION AND MIXING INSTRUCTIONS: 1. Remove the red cap from the top of the cartridge. 5. Turn the black valve to the #2 position. 8. Insert the cartridge into the caulking tool. FLEX-H2O Polyurethane Crack Sealer Usage tip: After the product is mixed, a small volume of air will remain in the cartridge. Keeping this cushion of air at the back of the cartridge during dispensing will allow the dispensing of the fi nal bit of epoxy from the nozzle once the cartridge is empty. 2. Screw the threaded portion of the nozzle into the cartridge. 6. Attach the black cap securely to the end of the nozzle. Wear gloves when handling the Crack-Pac ® Flex-H 2 O cartridge. Eye protection is recommended. 9. Turn the black valve to the #3 position and remove the black cap from the end of the nozzle. Attach the E-Z-Click injection fi tting to the end of the nozzle for injection. 3. Turn the black valve so that the #1 on the valve aligns with the arrow on the neck of the nozzle. 7. Shake the cartridge at a rate of 2 shakes per second for 2 minutes or until the mixed material is a uniform color. 4. Twist off the tip of the nozzle and allow the material contained within to drain into the cartridge. Warning: Do not open cartridge until ready to use. The polyurethane will react to atmospheric moisture if left exposed. To prevent pressure build up possibly resulting in cartridge breach and injury, remove cartridge from the caulking tool when not dispensing. C-SAS-2009 © 2009 SIMPSON STRONG-TIE COMPANY INC.
C-SAS-2009 © 2009 SIMPSON STRONG-TIE COMPANY INC. CRACK-PAC ® Application Polyurethane injection is an effective and economical method of sealing cracks in concrete and solid masonry elements. Crack-Pac ® Flex-H 2 0 crack sealer is suitable for sealing dry, wet, seeping and mildly leaking cracks in horizontal and vertical concrete and solid masonry elements ranging from ¹⁄₃₂" - ¹⁄₄". Defi nitions: Important: These instructions are intended as recommended guidelines. Due to the variability of fi eld conditions, selection of the proper material for the intended application and installation are the sole responsibility of the applicator. Dry Crack–a crack containing no moisture Wet Crack–a crack containing moisture (damp or containing standing water). The surface can be dried and will remain dry during the paste-over operation. Seeping Crack–a wet crack that slowly oozes water. After being dried, the surface slowly becomes wet again. Mildly Leaking Crack–a crack with a slow trickle of water emitting from its face. NOTE: Multiple applications may be necessary to fi ll all voids. Dry or Wet Crack Application - Sealing of the crack and attachment of E-Z-Click fl ush mount injection ports (Model EIP-EZ or EIP-EZA) 1. To adhere the port to the concrete, apply a small amount of epoxy around the bottom of the port base. Place the port at one end of the crack and repeat until the entire crack is ported. As a rule of thumb, injection ports should be placed 8" apart along the length of the crack. Important: Do not allow epoxy to block the port or the crack under it, this is where adhesive must enter the crack. 2. Using a putty knife or other paste-over tool, generously work epoxy along the entire length of the crack. Take care to mound the epoxy around the base of ports and to work out any holes in the material. It is recommended that the paste-over should be a minimum of ¹⁄₈" thick and 1" wide. Insuffi cient paste-over will result in leaks under the pressure of injection. Allow the paste-over to cure before beginning injection. 3. For Dry Cracks- Crack-Pac Flex-H20 reacts with water and needs moisture present to cure. Therefore, if the crack to be sealed is completely dry, water must be introduced into it. Once ports are in place and the crack surface is pasted over, use a syringe or spray bottle to introduce approximately 1 ounce of water into each port. FLEX-H2O Injection Guide Note: CIP and CIP-F and ETR epoxies are a fast cure, manually mixed materials and may harden prematurely if left in a mixed mass on the mixing surface while installing ports. Spreading paste-over into a thin fi lm (approximately ¹⁄₈") on the mixing surface will slow curing by allowing the heat from the reaction to dissipate. 1 1.1 2 Preparation of the Crack for Injection Clean the crack and the surface surrounding it to allow the paste-up material to bond to sound concrete. At a minimum, the surface to receive paste-over should be brushed with a wire brush. Oil, grease or other surface contaminates must be removed in order to allow the paste-over to bond properly. Take care not to impact any debris into the crack during cleaning. With dry cracks, use clean, oil free compressed air to blow out as much dust and debris from the crack. For many applications, additional preparation is necessary in order to seal the crack. Where a surfacing material has been removed using an acid or chemical solvent, prepare the crack as follows: 1. Using clean, compressed air, blow out any remaining debris and liquid. 2. Remove residue by high-pressure washing or steam cleaning. 3. Blow any remaining water from the crack with clean compressed air. If a coating, sealant or paint has been applied to the concrete it must be removed before placing the paste-over material. Under the pressure of injection these materials may lift and cause a leak. If the surface coating is covering the crack, it may be necessary to route out the surface of the crack in a "V" shape using a grinder in order to get past the surface contamination. Seeping Crack Application - Sealing of the crack and attachment of E-Z-Click fl ush mount injection ports (Model EIP-EZ) 1. Mix a small amount of quick-setting hydraulic cement with water in a container per manufacturer's recommendation (leave cement thick so it can be molded). Apply the cement generously to the top of the port fl ange and hold the port onto the concrete/masonry surface at one end of the crack until it sticks when the hand is released (usually about 1 minute). Repeat until the entire crack is sealed and ported. IMPORTANT: Be sure not to cover the port opening/closing interface with the cement. If this interface is covered, the cement must be cut away from this interface with a utility knife once it is cured, otherwise, the port will not close. 2. To seal the remaining portions of the crack, mix small amounts of the hydraulic cement and apply it to the crack in a similar fashion. It is recommended that the paste-over be ³⁄₁₆" thick and 1" wide. Once the entire crack is covered, all leaking water should be directed through the open ports. If water is leaking from any parts of the paste-over, be sure to patch these areas with additional hydraulic cement before injecting the crack. Mildly Leaking Crack Application - Sealing of the crack and attachment of E-Z-Click drill-in injection ports (Model EIPX-EZ) 1. Using a hammer drill or roto-hammer, drill ⁵⁄₈" holes ³⁄₄" deep at each end of the crack and along the crack approximately 8" apart. 2. Using the E-Z-Click Drilled-In port (model EIPX-EZ), gently pound the port into the drilled hole at the top of a vertical crack or at either end of a horizontal crack. Mix a small amount of quick-setting hydraulic cement with water in a container per manufacturer's recommendation (leave cement thick so it can be molded). 3. Apply the cement generously to the top of the port fl ange and hold until it sticks when the hand is released (usually about 1 minute). Repeat until the entire crack is sealed and ported. IMPORTANT: Be sure not to cover the port opening/closing interface with the cement. If this interface is covered, the cement must be cut away from this interface with a utility knife once it is cured, otherwise, the port will not close. 4. To seal the remaining portions of the crack, mix small amounts of the hydraulic cement and apply it to the crack in a similar fashion. Starting at one end and working toward the other. In vertical applications start at the top and work down. It is recommended that the paste-over be at least ³⁄₁₆" thick and 1" wide. Once the entire crack is covered, all leaking water should be directed through the open ports. If water is leaking from any parts of the paste-over, be sure to patch these areas with additional hydraulic cement before injecting the crack. Crack Injection 107
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22 EXAMPLE CALCULATION Adhesive Anc
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