Simpson Strong-Tie ETIPAC10KT Installation Guide
Contents
1. Sealing of the Crack and Attachment of E 2 Click injection ports 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 if this is where epoxy 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 the port to approximately 14 thick extending 1 out from the base of the port and to work out any holes in the material It is recommended that the paste over should be a minimum of 716 thick and 1 wide along the crack Insufficient paste over will result in leaks under the pressure of injection lf the crack passes completely through the concrete element seal the back of the crack if possible If not epoxy may be able to run out the back side of the crack resulting in an ineffective repair 3 Allow the paste over to harden before beginning injection Note CIP CIP F and ETR epoxies are 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 film approximately 14 on the mixing surface will slow curing2. Less epoxy is being used than estimated This may indicate that the crack is shallower than originally thought or the epoxy is not penetrating the crack sufficiently before moving to the next port Reinject some ports with a lower viscosity epoxy to see if the crack will take more epoxy Another option is to heat the epoxy to a temperature of 80 100 F which will reduce its viscosity and allow it to penetrate into small cracks easier The epoxy should be heated uniformly do not overheat cartridge some horizontal applications where complete penetration is not a requirement can be repaired using the gravity feed method 1 Follow cartridge preparation instructions on the cartridge label Verify that the material flowing from the Opti Mix mixing nozzle is a uniform black color for ETI SLV and ETI LV and a uniform gray color for ETI GV For Grack Pac injection epoxy verify that the mixed material in the cartridge is a clear amber color Estimating Guide for Epoxy Crack Injection Approx Coverage per 9 oz Crack Pac ae Approx Coverage per 16 5 oz are Approx Concrete Coverage Thickness per 22 02 in adrenge ee ee Co a 238 19 92 St ees ie eee Som Sos Sos SS Se 7 9 6 0 3 1 6 0 4 5 Coverage listed is approximate and will vary depending on waste and condition of concrete 2 Starting at one end of the crack slowly dispense epoxy into the crack moving along the crack as it fills It will prob
3. ably be necessary to do multiple passes in order to fill the crack It is possible that the epoxy will take some time to run into the crack and the crack may appear empty several hours after the initial application Reapply the epoxy until the crack is filled In situations where the crack completely penetrates the member e g concrete slab the material may continue to run through the crack into the subgrade In these cases epoxy repair may not provide an effective repair Tip For narrow cracks run a bead of caulk along each side of the crack approximately Ys from the edge of the crack This will forma reservoir into which epoxy can be dispensed Alternatively use a grinder to route the crack opening into a V shape Take care to clean the crack with compressed air afterwards as grinding can impact dust and debris into the crack and prevent proper flow of the epoxy Simpson Strong Tie does not recommend repair of cracks larger than wide without consulting a qualified engineer Strong Tie S i 89
4. ack is blocked by debris lf the mixing nozzle has been allowed to sit for a few minutes full of epoxy the material may have hardened in the nozzle Attach the E Z Click fitting to a port at another uninjected location on the crack and attempt to inject If the epoxy still won t flow chances are the epoxy has hardened in the nozzle Gravity Feed Procedure Epoxy is leaking fram 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 approximately 10 15 minutes to allow the epoxy 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 epoxy is hard before reinjecting or the paste over or ports may leak Another option for small leaks is to clean off the injection epoxy and use paraffin or crayon to seal the holes More epoxy is being used than estimated This may indicate that the crack either expands or branches off below the surface Continue to inject and fill these voids This may also indicate that epoxy is running out of the back side of the crack If the crack penetrates completely through the concrete element and cannot be sealed the application may not be suitable for injection repair
5. by allowing the heat from the reaction to dissipate 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 7 Click fitting and remove it from the port 5 Go to the last port where epoxy appeared while injecting the first port open it and continue injection at this port If the epoxy has set up and the port is bonded closed move to the next clean port and repeat the process until every portion of the crack has refused epoxy While this method may appear to leave some ports uninjected it provides maximum pressure to force the epoxy into the smaller areas of the crack Moving to the next port as soon as epoxy appears will allow the epoxy to travel along the wider parts of the crack to the next ports rather than force it into the crack before it travels to the next ports Injection Tips f using a pneumatic dispensing tool set the tool at a low setting when beginning injection and increase pressure if necessary to get the epoxy to flow For narrow cracks it may be necessary to increase the pressure gradually until the epoxy begins to flow It may also be necessary to wait a few minutes for the epoxy to fill the crack and travel to the next port If desired once the injection epoxy has cured remove the injection ports and paste over epoxy The epoxy can be removed with a chisel scraper or grinder The pas
6. er to allow the paste over to bond properly Take care not to impact any debris into the crack during cleaning Using clean oil free compressed air blow out the crack to remove any dust debris or standing water Best results will be obtained if the crack is dry at the time of injection If water is continually seeping from the crack the flow must be stopped in order for epoxy injection to yield a suitable repair Other materials such as polyurethane resins may be required to repair an actively leaking 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 lf a coating sealant or paint has been applied to the concrete it must be removed before placing the paste over epoxy 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 opening of the crack in a V shape using a grinder in order to get past the surface contamination Injection Procedure for ETI SLV ETI LV ETI GV and Crack Pac Injection Epoxy 1 Follow cartridge preparation instructions on the cartridge label Verify that the ma
7. t over can be simply peeled off if CIP F is used Using a heat gun to soften the epoxy is recommended when using a chisel or scraper Mixing nozzles can be used for multiple cartridges as long as the epoxy does not harden in the nozzle C SAS 2012 2012 Simpson Strong Tie Company Inc C SAS 2012 2012 Simpson Strong Tie Company Inc Simpson Strong Tie Anchoring and Fastening Systems for Concrete and Masonry EP OXY Injection Guide Troubleshooting Epoxy is flowing 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 fill these voids In situations where the crack penetrates completely through the concrete element and the backside of the concrete element cannot be sealed e g basement walls or footings with backfill longer injection time may not force the epoxy to the next port This most likely indicates that epoxy is running out of the unsealed back side of the crack In this case the application may not be suitable for epoxy injection repair without excavation and sealing of the back side of the crack Back pressure is preventing epoxy fram flowing This can indicate several situations The crack is not continuous and the portion being injected is full see above instructions about injection after the port has reached refusal The port is not aligned over the crack properly The cr
8. terial flowing from the Opti Mix mixing nozzle is a uniform black color for ETI SLV ETI LV and a uniform gray color for ETI GV For Crack Pac injection epoxy verify that the mixed material in the cartridge is a light amber color 2 Attach the E 7 Click fitting 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 7 Click injection fitting to the first E Z Click port until it clicks into place Make sure that the heads of all the ports are 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 epoxy into the first port until it will no longer flow into the crack lf epoxy shows at the next port and the first port still accepts material close the second port and continue to inject into the first port until it accepts no more epoxy Continue closing ports where epoxy appears until the first port refuses epoxy When the first port reaches the point of refusal brace the base of the port and pull Strong Tie ww important These instructions are intended as recommended guidelines Due to the variability of field conditions selection of the proper material for the intended application and installation are the sole responsibility of the applicator
9. z Ss S i S amp S 88 Simpson Strong Tie Anchoring and Fastening Systems for Concrete and Masonry EP OXY Injection Guide Epoxy injection is an economical method of repairing non moving cracks in concrete walls slabs columns and piers and is capable of restoring the concrete to its pre cracked strength Prior to doing any injection it is necessary to determine the cause of the crack If the source of cracking has not been determined and remedied the concrete may crack again Materials ETI SLY for repair of hairline cracks and cracks up to 14 ETI LV for repair of fine to medium width cracks Suggested width range es 14 ETI GV for repair of medium width cracks Suggested width range 42 4 Crack Pac injection epoxy for repair of fine to medium non structural cracks Suggested width range Ya 14 CIP CIP F and ETR are recommended for paste over of crack surface and installation of injection ports ET EDOT ETR or SET adhesives may also be used as a substitute SET is the only paste over epoxy approved for NSF ANSI Standard 61 E 7 Click injection ports fittings and other suitable accessories Preparation of the Crack for Injection Clean the crack and the surface surrounding it to allow the epoxy to bond to sound concrete Ata minimum the surface to receive paste over should be brushed with a wire brush Oil grease or other surface contaminates must be removed in ord
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