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HomeMy WebLinkAboutCarbon Armor Specs 3.4 CarbonArmorlt Wall Reinforcing System 3.4.1 Summary Description Supportworks offers high-strength fiber-reinforced polymer (FRP) composite materials to reinforce concrete block and poured concrete foundation walls. - These systems effectively combine the benefits of epoxies and carbon fibers to provide high strength,low strain tensile reinforcement. When properly installed and bonded to concrete substrates, like basement walls, significant increases to both structural integrity and load capacity can be achieved (Figure 3.30). The design strength of the CarbonArmor system is one of the highest in the industry and is supported by extensive application and durability testing. The CarbonArmor Wall Reinforcing System is a proven method to laterally support bowing foundation walls. " Technical specifications and spacing recommendations are included in Appendix 3C. Figure 3.30 Rendering of CarbonArmor installation with optional Armorl-ock connection to rim joist and sill plate 3.4.1.1 Advantages • Ideal to reinforce the inside face of block walls and a May be installed around obstructions on the prevent further bowing in the middle wall; such as piping, electric conduit, and HVAC ductwork • Optional ArmorLock® system resists movement at the top of the wall 0 Completed installations are suitable for painting • Flexible carbon fiber fabric contours tight against 0 Low profile system can be concealed by the wall wall framing ©2017 Supportworks Chapter 3 All Rights Reserved 280 Wall Stabilization Systems 3.4.2 Installation Steps Step 1 Step 2 Prepare the wall surface about eight inches wide for To establish an uninterrupted,continuous,flat bond of each CarbonArmor strap. Concrete surfaces must be fabric to the wall,thoroughly mix the two-part epoxy structurally sound and free from contaminants such paste and place in all mortar joints and cracks at each as dust, dirt, or oil. Use the vertical mortar joints of strap location. All mortar joints and cracks located block walls as guides. Surfaces must be mechanically behind the fabric should be filled flush with the face abraded to remove protrusions from the wall that of the wall(Figure 3.33). may trap air behind the installed CarbonArmor strap (Figure 3.31).At locations that will receive an ArmorLock installation,grind the top edge of the wall to create a smooth, rounded corner(Figure 3.32).After abrading, thoroughly clean the wall with a vacuum and place confinement tape along edges of the prepared areas. A�ya• •.Y��Tw.•'.tY. IFigure 3.33 ( Step 3 Thorough and complete mixing of the liquid epoxy is critical for the performance of the product. Pour small hardener container into the larger resin container and mix with a drill and the supplied paddle mixer for a Figure 3.31 minimum of five minutes. Do not mix more material than may be applied within 30 minutes(Figure 3.34). Figure 3.32 Figure 3.34 ©2017 Supportworks° Chapter 3 All Rights Reserved 281 Wall Stabilization Systems Step 4 Pour mixed liquid epoxy into tray and saturate the prepared wall surface using the provided roller. Repeat this step two more times allowing the epoxy to soak into the wall for five minutes between applications(Figure 3.35). i i r_ 1 4 Figure 3.35 Step 5 Step 6 Cut CarbonArmor strap to match the wall height and Saturate strap with two coats of epoxy,again allowing adhere the dry fabric to the wet epoxy on the wall five minutes between coats to allow epoxy to soak (Figure 3.36). through the fabric(Figure 3.37). � I f r• M y.e. Figure 3.36 Figure 3.37 ©2017 Supportworks' Chapter 3 All Rights Reserved 282 Wall Stabilization Systems 3.4.2.1 ArmorLock®System The optional ArmorLock bracket and FRP system essentially splices with CarbonArmor straps to extend reinforcement to the building's rim joist and sill plate framing.ArmorLock provides supplemental support for the foundation wall's top connection to the sill plate,and is a common add-on"insurance"option with CarbonArmor installations. If the top of wall connection to the sill plate has failed completely,then other options should be considered, such as the PowerBrace system. CarbonArmor and ArmorLock systems are again best suited for bowing block walls showing initial signs of distress. Step 1 Step 2 Evenly drape dry ArmorLock straps around bracket Temporarily roll up ArmorLock straps, place on top (Figure 3.38) and attach bracket to the sill plate and of sill plate, and complete Steps 1 through 4 from rim joist with eight #9 x 1-1h-inch long wood screws Section 3.4.2(Figure 3.40). (Figure 3.39). Figure 3.40 Step 3 Unroll ArmorLock straps and pull tight.Adhere the inner strap to the wet wall and use rollerto saturate strap with epoxy.Wait five minutes.Apply another coat of epoxy. Figure 3.38 Adhere the dry outer strap onto the wet inner strap and use roller to apply epoxy onto strap(Figure 3.41).After five minutes,apply a second coat of epoxy. N 1 _ 1 Figure 3.39 Figure 3.41 ©2017 Supportworks° Chapter 3 All Rights Reserved 283 Wall Stabilization Systems Step 4 Step 5 CarbonArmor strap is installed over and bonded to Installation of the CarbonArmor Wall Reinforcing the Armorl-ock straps by saturating both with epoxy System with optional Armorl-ock System complete as described in Step b from Section 3.4.2(Figure 3.42). (Figure 3.43). NLOM- ^� i_ I I Figure 3.42 Figure 3.43 3.4.2.2 Special Installation Considerations • Do not apply to concrete less than 30 days old. • Do not apply to concrete with curing or sealing membranes. • Do not apply to concrete with a surface temperature less than 45T. • Do not thin epoxy with solvent. • High temperature environments may require a special hardener selection. Consult with a Supportworks representative for recommendations in these situations. ©2017 Supportworks' Chapter 3 All Rights Reserved 284 Wall Stabilization Systems