Compressive Properties of Self-Compacting Concrete after Cooling from High Temperatures

نویسندگان

چکیده

Self-compacting concrete (SCC) has been widely used in building structures. However, previous research focused only on the mechanical properties and working of SCC at room temperature. Thus, there is limited change compressive strength after a fire. This paper aims to investigate being cooled from high temperatures. The specimens were firstly heated target temperature 100–700 °C then ambient temperatures by water or air. heating cooling damage was assessed mass loss ultrasonic pulse velocity (UPV) separately. Afterward, axial compression tests carried out fire-affected under uniaxial compression. residual mass, UPV, stress–strain curves, post-fire failure characteristics, strengths discussed detail. showed an obvious increase with rising temperatures, while UPV exhibited converse pattern. naturally increased more significantly, two methods this experiment had little effect UPV. When 100 °C, air dropped 32.54% 35.15%, respectively. rose 700 sharply 72.98% 86.51%, Finally, improved mathematical model for proposed based Jones Nelson’s equation. material matched experimental results well, which demonstrates that constitutive can provide better predictions structures

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ژورنال

عنوان ژورنال: Buildings

سال: 2022

ISSN: ['2075-5309']

DOI: https://doi.org/10.3390/buildings12111875