Experimental justification of installation tolerances for non-removable steel fiber concrete formwork
Abstract
Experimental justification of installation tolerances for non-removable steel fiber concrete formwork
Incoming article date: 04.11.2025One of the ways to reduce the construction time of nuclear power plants is to use prefabricated monolithic construction technology with the use of prefabricated formwork blocks consisting of a reinforcement frame and sheets of non-removable formwork made of high-strength steel fiber concrete. After installation in the design position, the prefabricated elements are filled with self-compacting concrete mixture, significantly reducing labor costs on the construction site. Self-compacting concrete mixtures are characterized by high mobility and a significant content of cement paste, which increases the requirements for ensuring the tightness of the formwork system. The article describes the results of experimental studies on the parameters of filling the technological gaps between the sheets of non-removable formwork with self-compacting concrete mixture at different heights of its placement. The article also provides a description of a laboratory setup that allows for the simulation of the pressure of freshly placed concrete.
Keywords: nuclear power plant, permanent formwork, structural testing, steel fiber reinforced concrete, self-compacting concrete mix, formwork pressure