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The first expanded polystyrene ICF Wall forms were developed in the late 1960s with the expiration of the original patent and the advent of modern foam plastics by BASF. [citation needed] Canadian contractor Werner Gregori filed the first patent for a foam concrete form in 1966 with a block "measuring 16 inches high by 48 inches long with a tongue-and-groove interlock, metal ties, and a waffle ...
This formwork is assembled on site, usually out of insulating concrete forms (ICF). The formwork stays in place after the concrete has cured, and may provide advantages in terms of speed, strength, superior thermal and acoustic insulation, space to run utilities within the EPS layer, and integrated furring strip for cladding finishes.
EFCO offers formwork and shoring solutions for all types of concrete construction projects. [1] EFCO, formerly known as Economy Forms Corporation, is headquartered in Des Moines, Iowa, and currently has operations in 12 countries and manufacturing facilities in both Des Moines, Iowa, and Georgetown, Ontario, Canada. [2]
ULMA Construction is a Spanish company that produces and distributes industrialized formwork and scaffolding systems for building, civil works, and rehabilitation. Ulma is operating in 80 countries on five continents through the rental and sale of its services and products, technical project development, and on-site consultancy.
Doka’s business is based on a combination of production, equipment sale & rental, engineering and maintenance. Most of the formwork production takes place at Doka's central plant in Amstetten. [7] The Doka three-ply sheets are made in the branch plant in Banská Bystrica in Slovakia.
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.
In-situ evaluation of silane treated concrete cast using Zemdrain formwork liner at Dock street bridge, Belfast. Internal report to Du pont De Nemours, Luxembourg, Report No - TAS 139, June, 1992, p. 8, (Unpublished). Reddi, S.A. Permeable formwork for impermeable concrete. Indian Concrete Journal, January, 1992, pp. 31–35.
In the 1990s all of the Group's businesses decided to adopt a new and unique corporate image. For this, in 1990 and 1991, the cooperative ULMA S. Coop. changed its name to ULMA C y E, S. Coop. The rest of the businesses incorporated the ULMA brand and trade name. In 1996, ULMA Polymer Concrete (today ULMA Architectural Solutions) was established.