Архивы рубрики ‘Adhesives in civil engineering’

Closing remarks

Adhesive materials will continue to have a significant part to play in the construction industries, and the contribution of structural adhesives can only expand in the future. Additionally, engineers will need to develop some understanding and expertise in the field of adhesion science and technology if greater advantage is to be taken of the potential […]

Miscellaneous connections

There exist a number of very diverse uses for adhesives in both new work and in existing structures. Nevertheless, in such cases the adhesive would generally be called upon to act in a structural manner. Fig. 8.18. Wirewood. A similar concept to glulam and concrete segmental construction can involve the fabrication by bonding, usually with […]

Plastic bridges

Short span glass reinforced plastic (GRP) bridges have existed for some time in Europe and in the USA, but have carried only pedestrian traffic. In 1982, a 20 m span highway bridge was completed in Beijing, China(28). It comprises five honeycomb core box girders, each 21 m long, 1.6 m wide and 1.7 m deep, […]

Externally bonded reinforcement

The technique of bonding steel plate reinforcement to the tension and shear faces of existing reinforced concrete structures for strengthening purposes was described in Chapter 6. As an alternative to steel plate reinforcement, glass or carbon fibre reinforcement could be used which may (a) simplify some of the surface treatment procedures, (b) reduce installation costs […]

Cladding attachments

There exist a number of instances in which cladding panels, comprising various materials, are bonded directly into curtain Fig. 8.16. Communications equipment turret constructed of EXTREN on top of the Sun Bank building in Orlando, Florida. Fig. 8.17. GRP cellular panel employed for Tees viaduct enclosure. walling assemblies using toughened acrylics or structural silicones — […]

Pultruded sections

Glass reinforced pultruded plastic sections such as Extren(25) have been used where corrosion resistance, thermal and electrical non­conductance or non-magnetic properties were required. It is possible to fabricate large assemblies using bolting techniques (e. g. Fig. 8.16) , but development work is necessary to explore the opportunities for bonding. Cellular panels, manufactured by GEC Reinforced […]

Connections between plastics

About 30% of all polymers produced each year are used in the civil engineering and building industries(23). Nevertheless, structural plastics such as fibre reinforced composites have so far received little attention by civil and structural engineers, despite some of their obvious advantages such as lightness, handleability and corrosion resistance. This may be due to reservations […]

Rebar connectors

The splicing of reinforcement bars using sleeved couplers offers a number of advantages. These include the avoidance of rebar congestion, positive stress transfer, reduced crack widths caused by bursting forces at lapped joints, and the ability to replace or add reinforcement in concrete repair work. Sleeve joints relying on epoxy resin only were investigated by […]

Aluminium connections

The bonding of aluminium alloy components for structural engineer­ing applications has been the subject of extensive research by the Dutch TNO Institute for Building Materials and Structures! 19, 20). Apart from the evaluation and testing of a number of adhesive systems, experimental research was carried out on several structural details. Aluminium alloy surface pretreatment was […]

Connections between metals

Light-gauge materials Adhesive joints between relatively thin gauge metals are common throughout the engineering industry. Such metals are used extensively in steel and aluminium curtain walling assemblies, and in proprietory steel framing systems. Cold-formed steel sections are also used extensively in building construction. The components of the walling and framing assemblies are commonly welded or […]