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Engineered Formwork System. This formwork is built out of prefabricated modules with a metal frame (usually steel or aluminium) and covered on the application side with material having the wanted surface structure (steel, aluminum, timber, etc.). The two major advantages of formwork systems, compared to traditional timber formwork, are speed of ...
For a ground-bearing slab, the formwork may consist only of side walls pushed into the ground. For a suspended slab, the formwork is shaped like a tray, often supported by a temporary scaffold until the concrete sets. The formwork is commonly built from wooden planks and boards, plastic, or steel.
Traditional formwork is fabricated using wood, but it can employ steel, glass fibre, reinforced plastics and other materials. [3] Formwork for beams takes the form of a box that is supported and propped in the correct position and level. The removal time for the formwork will vary with air temperature, humidity and consequent curing rate.
Controlled Permeability Formwork, paper No.8, formwork practice in Japan. Report on an overseas Science and Technology Expert Mission, London, October 1989, pp. 29–32. Duggan, T. Enhancing concrete durability using Controlled Permeability Formwork. 17th Conference on Our World in Concrete and Structures, Singapore, August, 1992. pp. 57–62.
During the 1980s, Okamura and his Ph.D. student Kazamasa Ozawa at the University of Tokyo developed self-compacting concrete (SCC) which was cohesive, but flowable and took the shape of the formwork without use of any mechanical compaction. SCC is known as self-consolidating concrete in the United States. SCC is characterized by the following:
Insulating concrete form or insulated concrete form (ICF) is a system of formwork for reinforced concrete usually made with a rigid thermal insulation that stays in place as a permanent interior and exterior substrate for walls, floors, and roofs.
Climbing formwork; Concrete and Constructional Engineering; Concrete cancer; Concrete canoe; Concrete chipping; Concrete cone failure; Concrete cover; Concrete densifier; Concrete float; Concrete fracture analysis; Concrete frame; Concrete landscape curbing; Concrete leveling; Concrete mixer; Concrete moisture meter; Concrete plant; Concrete ...
A finished tilt-up building. Tilt-up, tilt-slab or tilt-wall is a type of building and a construction technique using concrete.Though it is a cost-effective technique with a shorter completion time, [1] poor performance in earthquakes has mandated significant seismic retrofit requirements in older buildings.