Precast Concrete–To–Precast Concrete Facade Joints Using Precompressed Expandable Foam

Risk Assessment of Joint Sealing Tape in Joints between Precast Concrete Sandwich Panels Resilient to Climate Change

“…Quantifying penetration of driving rain shows the possibility of substantial leakage for the studied exposed facade. This complies with studies indicating leakage into precast concrete structures due to the fact of driving rain [1,[20][21][22] for the traditional solution and [3,4] for the pre-compressed joint sealing tape. As there are few studies of pre-compressed joint sealing tapes in joints between precast concrete facades, the solution was compared to the traditional solution as a starting point.…”

“…However, the issue of the novelty of joints between panels was not addressed. Studies on pre-compressed joint sealing tape in joints in precast concrete sandwich facades are scarce, only [3] examined the performance of sealing tape in joints using mock-ups with four different joint configurations. The authors concluded that sealing tape should not be used solely but in combination with silicon applied to the surface to achieve a viable option.…”

“…Leakage: Joints in material (3) Assessment: Available documentation on performance assessed as incomplete. The test setup according to European standard on water tightness for windows and doors does not necessarily cover joints in materials although a test setup for braces is suggested in the EAD.…”

“…Data available to the design-build contractor are mainly a few essential characteristics of the product as defined in the applicable European Assessment Document [2], which possibly does not contain sufficient information for a risk assessment of the full technical solution applied in a building from a design-build contractor's perspective. Few studies on performance were found, only [3] and [4] specifically addressed the watertightness of joint sealing tapes in precast concrete sandwich panels. Instead, reference cases are referred to by suppliers to verify performance, but these often lack adequate assessment and documentation leaving the design-build contractor with an incomplete basis for decision making.…”

Pre-Compressed Foam Sealing Tapes to Seal Joints between Building Envelope Components Watertight: An Experimental Assessment

“…It is however, acknowledged by the building industry that defects, such as adhesive cracks, will occur in the sealant over the lifespan of a building which may result in infiltration of rainwater [9][10][11][12][13]. Therefore, there is currently a gaining interest in alternative materials and approaches to seal joints watertight [14][15][16][17][18]. Additionally, as it is predicted that due to climate change the intensity and frequency of extreme weather events and the amount of wind-driven rain will increase in the Northern part of Europe, the necessity for sealing materials with high resistance to wind-driven rain also further increases [19].…”