The smart Trick of Precast Concrete Structural Frames and Wall Panels That Nobody is Discussing

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Not known Details About Building Science Details for Architectural Precast Concrete



A sealant will improve the visual appearance of concrete joints and be more appealing to architects and clients. The high mechanical strength, chemical resistance and durability of the mastic, will ensure exceptional performance. Step 1 Concrete Joint Preparation Prior to setting up a sealant, the joint must be dry and totally free of dust, dirt and release agent.


If excessive release representative appears or if sealing a weathered concrete surface area, it might likewise be essential to clean up the surfaces utilizing a pressure-washer or cleansing option. Action 2 Foam Support Rods To avoid the sealer from sagging into flooring joints or reducing the quantity of sealant required in wide spaces in wall joints, a foam support rod can be used.


For a joint this size, we advise using a 15mm size rod. The closed-cell foam rod is placed into the joint and pushed into the space to fill deep space. The specific depth required will differ depending on the mastic being used however is generally the width of the joint We suggest inspecting the item datasheet to validate.


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Step 3 Priming Concrete Joints Your concrete joint must now be fairly clean and ready for mastic application. However, to ensure a good bond between the precast concrete systems and the mastic, the surfaces should be primed before continuing. Care ought to be taken when using these items as they are often solvent-based.


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Apply the Sika Primer-3 N (or comparable), utilizing a paint brush note only a percentage of guide is needed and must just be utilized on the joint itself. The application of the guide prior to sealing the joints will make sure optimum adhesion to the concrete and improve the life-span of the item.


Step 4 Concrete Sealant Application Prepare the sealant tube/sausage by connecting the application nozzle to television or cut the end of the sausage. If utilizing a mastic tube, cut the nozzle to the required size to enable enough mastic to stream in one movement to fill the joint. Beginning at Additional Info of the joint, apply the mastic utilizing even pressure on the mastic gun or adjust the flow rate of powered mastic to the wanted amount.


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