Formwork structures used in cast-in-place concrete construction mainly consist of three parts: panels, supporting structures, and connectors. The panels are the load-bearing slabs that directly contact the freshly poured concrete; the supporting structures are temporary structures that support the panels, concrete, and construction loads, ensuring the formwork structure is firmly assembled and does not deform or break; connectors are the fittings that connect the panels and supporting structures into a whole.
Formwork is the mold and support for casting concrete. Based on material properties, it can be divided into construction formwork, plywood, film-faced plywood, multi-layer plywood, double-sided adhesive-coated formwork, and double-sided film-faced formwork, etc. Based on construction process conditions, it can be divided into cast-in-place concrete formwork, pre-assembled formwork, large formwork, and step-up formwork, etc.
Modular steel formwork is a new type of formwork that "replaces wood" with modern formwork technology. It has advantages such as strong versatility, convenient assembly and disassembly, and high reusability. Used for cast-in-place reinforced concrete structure construction, it can be pre-assembled into large formwork for beams, columns, walls, and floor slabs according to design requirements, and then hoisted into place as a whole. It can also be assembled and disassembled piece by piece.
Aluminum formwork, a new type of building formwork made of aluminum alloy, is an emerging green construction formwork in the construction industry. It is widely adopted by construction companies due to its simple operation, fast construction, high returns, environmental friendliness and energy saving, high reusability, good concrete pouring effect, and recyclability. On November 27, 2014, at the "High-Level Forum on Expanding the Application of Aluminum in the Construction Industry," it was proposed to expand the application of aluminum formwork, focus on promoting aluminum formwork, and implement aluminum formwork construction standards as soon as possible.
