Development of a paste for passive fire protection mainly composed of granulated blast furnace slag

Abstract

In this study, the behavior of granulated blast furnace slag as a component of passive fire protection materials is evaluated. To investigate the performance of blast furnace slag, different replacement levels from 0 to 80 wt% have been analyzed. Different properties, such as physical, mechanical, and insulating capacity and leaching, have been thoroughly analyzed. Pastes made of a combination of granulated blast furnace slag and gypsum can be potentially used as a component in construction materials for passive protection against fire. The results indicate that the mechanical properties diminish when the slag content increases. It was concluded that replacements lower than 60 wt% comply with all the mechanical demands. A slight reduction of the insulating capacity was observed when the slag content was increased. Additionally, no heavy metal leaching problems have been detected.Significance: The current research presents the results of a study to reuse granulated blast furnace slag in fire-resistant pastes with gypsum. Blast furnace slags decrease the thermal diffusivity of the paste at high temperatures, improving its insulating capacity. It facilitates its use in specific and high-value applications with similar properties to commercial materials and increases the recycling rate with any heavy-metal leaching problem. K E Y W O R D Scompressive strength, heat transfer, leaching, solid waste

Development of Geopolymer Mortars Using Air-Cooled Blast Furnace Slag and Biomass Bottom Ashes as Fine Aggregates

“…NA presents a particle size between 250-1500 µm, with an average particle size of 680 µm while ACBFS presents a wider size range than SS (0-2000 µm), but with a slightly lower average particle size (660 µm) than NA. Previous research shows that BFS presents a smaller particle size (50-100 µm) compared to the three fine aggregates [16]. ACBFS presents a wider size range than SS (0-2000 µm), but with a slightly lower average particle size (660 µm) than NA.…”

“…ACBFS presents a wider size range than SS (0-2000 µm), but with a slightly lower average particle size (660 µm) than NA. Previous research shows that BFS presents a smaller particle size (50-100 µm) compared to the three fine aggregates [16].…”

“…During this process (granulation), the slag vitrifies. The principal use of granulated blast furnace slags is for cement production [15,16], but GBFS can also be used as a raw material to obtain geopolymers [7,17], showing good physical and mechanical properties.…”

Revisión del estado actual de los sistemas de protección pasiva contra incendios (PPCI) y su impacto en la alcaldía Cuauhtémoc, Ciudad de México

“…Se han abordado diversos materiales de PPCI como: las barreras de aislamiento térmico (Caetano et al, 2022), los materiales de construcción endodérmicos (Ríos et al, 2020) y algunas soluciones basadas en aglutinantes activados con álcali (Nicoara et al, 2019). Los materiales de aislamiento térmico tienen un papel vital para resistir el flujo o pérdida de calor a través de envolventes.…”

Experimental study of a noise reducing barrier made of fly ash

“…It is the time during which the temperature of the surface not exposed to fire remains constant at a temperature slightly below 100 °C. This is because porous construction materials have a high water retention capacity (7,42). Fire resistance was lower than in other barriers using gypsum as binder, due to the high chemically bound water included in the gypsum ( 43), but such barriers cannot be used in outdoor environments because they have durability problems.…”