A Experimental Study on Fire Resistance Performance of Board Encased Steel Frame Used in Modular House

Abstract

The modular house that is firstly manufactured in a factory and secondly assembled in site is beneficial to shorten the construction period, to improve the construction quality and to reduce the construction fee. However, for fire protection, few research work has been studied in Korea, in which, in turn, the demand for the construction of the modular houses has never been increased, due to the fire safety issue. This study investigates the improvement of fire resistance of the modular houses. A gypsum board and an insulating material were applied to the beams and columns, and their fire resistance performance was examined. The results of fire tests showed that the board encasing system had the least damage and protected the substrate modular structures from fire for maximum 71 min. Hence, it can be expected that this new board encasing system can inspire other researchers who work for developing the fire resistance technique for the modular house in near future.

Characteristics of Mortar Containing Oyster Shell as Fine Aggregate

“…Fire-resistant finishings of buildings are mainly classified into wet and dry types. In general, the wet type is constructed with fire-resistant materials, such as fire-resistant paint and spray coating, and the dry type is constructed using fire-resistant boards [ 1 ].…”

“…In addition, repair is required over time because of scaling and spalling. In cases of dry construction, a separate curing period is not required, and precise construction is possible [ 1 , 2 , 3 ]. However, for both wet and dry types, the damage to the structure is hard to prevent in case of fires accompanied by explosions and impacts exceeding a certain level because these materials do not possess sufficient durability.…”