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Published in Les Goring, Residential Surveying Matters and Building Terminology, 2023
Formwork: This is a formal reference to preformed, temporary wooden structures, that are built to a required shape, to hold fluid concrete in place until a chemical setting-action takes place and the concrete hardens. Note that the term formwork is also referred to as shuttering.
Preparing and Mixing Concrete and Mortar
Published in Malcolm Thorpe, Brickwork Level 1, 2021
The formwork and the way it is made and used play a great part in the finished appearance. Apart from its appearance, formwork usually needs to be used many times and this can only be done if it is carefully and properly handled, cleaned and stored.
Pricing trade work
Published in Caroline T. W. Chan, Estimating and Measurement for Simple Building Works in Hong Kong, 2020
Formwork pricing requires a fundamental understanding of the system to be employed. The most critical aspects which determine the material cost of formwork items are the type of formwork applied and amount of reuse. There are many types of formwork with respect to materials (such as timber, steel, aluminium and plastic) and design (including non-mechanised type, table form, climb form, jump form and the like). Complicated mechanised formwork systems are more costly involving substantial equipment cost. However, those systems can be reused many times and a shorter floor cycle can be achieved. These benefits often justify the use of mechanised formwork in a high-rise building construction. For traditional timber formwork, although it can be fit for up to 12 times of reuses theoretically (Lu et al., 2011), it is often reused for several times only in practice (Gammon Construction Limited, 2020).
Investigating thermal cracking in mass concrete of a bridge abutment: field measurements and numerical modelling
Published in Australian Journal of Civil Engineering, 2022
Khalifa S. Al-Jabri, Abdul Wahid Hago, Davoud Tavakoli, Muhammad Bilal Waris, Hossam F. Hassan, Yahia Mohamedzein
Immediately after application of the curing compound, Styrofoam insulation panels are to be fixed on the concrete surface to avoid temperature differential between the core and the outer surface of the mass concrete. These should not be removed until the maximum difference between air and concrete surface in 24 hours is below 11°C. The formwork can be removed when concrete is strong enough not to be damaged by formwork removal, provided curing and protective measures are maintained. Figure 6 suggests that by 10 days, the difference between the core and the surface never reached this limit.
Time gap effect on bond strength of 3D-printed concrete
Published in Virtual and Physical Prototyping, 2019
Yi Wei Daniel Tay, Guan Heng Andrew Ting, Ye Qian, Biranchi Panda, Lewei He, Ming Jen Tan
Concrete is usually poured into a formwork that provides a temporary structure support as well as performing as a mould that shaped the freshly placed concrete to the desired configuration and size. In most cases, a vibrating rod is used together with the formwork. Since the concrete has a shear-thinning effect, the stress induced by this vibrating motion of the rod removes air bubble which increases compaction and would cause the material to flow in the formwork. This construction process produces homogenous material where the strength is the same throughout the material (Hurd 2006).
Identification of factors on the possibility of bamboo as a scaffolding and a formwork material in Ethiopia
Published in Cogent Engineering, 2022
Ermias A. Amede, Ezra K. Hailemariam, Leule M. Hailemariam, Denamo A. Nuramo
Formwork is a temporary structure that keeps fresh concrete in place until strong enough to support its self-weight. It is a self-supporting structure capable of bearing both a dead load of reinforcement and fresh concrete and the living load of equipment, personnel, and other materials. Vertical Systems (wall and column) and Horizontal Systems (floor and ceiling) are the two types of formwork systems (slab and beam). The sheathing is the material that serves as the form’s contact face and is utilized in both vertical and horizontal systems.