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Sealants, Insulation and Barriers and How to Install Them
Published in Stan Harbuck, Donna Harbuck, Residential Energy Auditing and Improvement, 2021
Sealants such as caulk or mastic are also used for sealing. Typically, caulk is used for cracks and openings 1/4 inch or less. The three types of caulks most often used include siliconized acrylic latex caulk, pure or 100% silicone caulk, and polyurethane caulk. In the ¼” to ½” range of cracks, apply a backing, such as tape or a foam rod, to span the width before applying caulk.
Specific Maintenance Procedures and Requirements
Published in Ryan Cruzan, Manager’s Guide to Preventive Building Maintenance, 2020
Caulking is used in many different ways in buildings and will show up in several different ways on your PM calendar. Caulk is used anywhere that a water or air tight seal is needed between two building components. Exterior building expansion joints will need to have the caulk maintained regularly, as does caulking around windows and doors. In hotels, a lot of time can is often spent by maintenance departments to keep the caulk around tubs and showers mildew free. Caulk joints show up around pipe or electric penetrations in exterior walls and at transitions between different roofing components. Caulk is the do-all product wherever there is a crack or gap.
Effect of slab stiffness on the geotechnical performance of energy piled-raft foundation under thermo-mechanical loads
Published in European Journal of Environmental and Civil Engineering, 2020
Leila Pourfakhrian, Hamed Bayesteh
The finite element method (FEM) has been used to simulate the behaviour of an energy pile (Di Donna & Laloui, 2015). Studies have focussed on the average temperature of a thermal pile in design approaches (Abdelaziz & Ozudogru, 2016), the optimum geometry of thermal piles (Caulk et al., 2016), the design of thermal boreholes (Fadejev & Kurnitski, 2015), probabilistic analysis of the behaviour of thermal piles in granular soil (Xiao et al., 2016), the energy pile-soil interaction caused by lateral expansion of thermal piles (Olgun et al., 2014), the effect of horizontal stresses caused by temperature transfer (Ng et al., 2016), the creation of additional pore water pressure by the thermal piles in clay (Fuentes et al., 2016), the long-term behaviour of the energy pile (Nguyen et al., 2019) and FEM modelling of the load-deformation behaviour of full-scale heat piles (Bourne-Webb et al., 2019). These studies have led to a more complete understanding of the behaviour of the interaction of a single energy pile with the surrounding soil. In some studies, practical graphs have been developed for design purposes in engineering projects (Park et al., 2018).
Response and fatigue assessment of high speed aluminium hulls using short-term wireless hull monitoring
Published in Structure and Infrastructure Engineering, 2018
Nephi R. Johnson, Jerome P. Lynch, Matthew D. Collette
Each sensing channel is attached to a Narada wireless sensor for data acquisition (including 16-bit digitisation) and communication to the system base station using power amplified IEEE802.15.4 transceivers operating on the 2.4 GHz wireless spectrum segment. Each Narada node is packaged in a water-tight enclosure along with batteries and signal conditioning circuitry (e.g. anti-aliasing filter, Wheatstone bridge and signal amplifier). A requirement of the short-term installation is that it be non-permanent and hence, easily removed. To achieve the objective, each enclosure is bonded to the hull using double sided tape (to hold the enclosure in place) and a small amount of epoxy on the bottom of the enclosure. Silicone caulk is then applied to the perimeter of the enclosure to prevent sliding and to protect the tape and epoxy from water exposure. The installation procedure consisting of mounting two rosettes, three triaxial accelerometers and five (5) Narada enclosures is completed in a single afternoon. The sensors and nodes are durable, even on test runs experiencing very high sea states, and easily removed without permanently altering the hull at the end of the study.
A brief review of sealants for cement concrete pavement joints and cracks
Published in Road Materials and Pavement Design, 2021
Lu Lu, Deying Zhao, Jizhou Fan, Guoqiang Li
Slurries of mud and clay were used as sealants in the very early days, which lacked flexibility and could not adjust to thermal expansion/contraction. Their weatherability was not good and had to be re-patched continuously. ‘Caulk' is defined as a substance placed inside a joint to create a barrier to prevent the passage of air, heat, or water; while ‘sealant' is defined as a material not only serving as ‘caulk' but also being able to extend and compress without losing its sealing effectiveness (Foster, 1987). Therefore, we use the term sealant instead of caulk in this review.