Performance of clay masonry prisms with light weight plaster exposed to standard fire exposure

Abstract

Clay bricks are one of the most widely used materials in building construction due to their advantages, including local availability, ease of fabrication and cost‐effectiveness. Fire is one of the dangerous hazards that can cause damage the life and property. Lightweight plasters play a vital role in insulating the masonry construction during fire accident. There is only limited data and information available on the fire performance of Clay Brick Masonry (CBM) insulated with lightweight plaster. An extensive investigation was undertaken to evaluate the residual strength properties and physical characteristics of CBM prisms exposed to elevated temperatures. CBM prisms plastered with M‐sand mortar, vermiculite mortar, and perlite mortar were used for the investigation. Protected prisms were exposed to elevated temperatures following the ISO 834 standard fire curve for durations of 30 min (821°C), 60 min (925°C), 90 min (986°C), and 120 min (1029°C). Mechanical properties such as axial load carrying capacity, stress–strain behaviour, elastic modulus, and crack pattern were examined. The mechanical properties of CBM prisms were found to be highly influenced by the type of plastering, intensity, and the duration of heating. The microstructure and image analysis confirmed the effects of temperature exposure on protective plasters. Equations are proposed to determine the residual axial compressive strength and the elastic modulus of CBM. It was found that the specimens plastered with perlite mortar had better fire resistance.

Experimental analysis of the wall deformation of masonry brick and gypsum‐sheathed stud walls during standardized fire resistance tests of steel doors

“…depending on the temperature were presented. Since clay bricks insulated with lightweight plaster showed an increased fire resistance compared to non‐insulated constructions, Kiran et al 6 tested clay brick masonries with its insulation to get a better understanding about the mechanical behaviour under standard fire conditions. The mechanical properties were found to be highly affected by the type of plastering, intensity and the duration of the heating procedure.…”

Efficacy of Fire Protection Techniques on Impact Resistance of Self-Compacting Concrete

“…Unprotected heated specimens (FA 120M and GGBFS 120M) showed a significantly more significant loss in impact energy of around 95.6% and 93.6%, respectively, compared to FA 0M and GGBFS 0M specimens. The study found that even after 120 min of heating, the CPP-protected SCC specimens containing EPA effectively resisted temperature penetration and reduced the loss in failure impact energy [39].…”

Meta-Narrative Review of Artificial Intelligence Applications in Fire Engineering with Special Focus on Heat Transfer through Building Elements

“…The interface between the body of a wall and a fire source also affected the performance of the system. Basic mathematical models were developed to describe the thermal and mechanical behaviour of clay brick walls rendered with various plaster mixes against a fire source [26]. In the same vein, the impact of a steel plate formwork and other components was examined when a composite concrete and steel wall was exposed to fire.…”