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Stress-strain relationship for recycled aggregate concrete after exposure to elevated temperatures
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2017
Year
Materials ScienceRecycled Aggregate ConcreteEngineeringDurability PerformanceStress-strain RelationshipCivil EngineeringConcrete TechnologyReinforced ConcreteSplit Tensile StrengthRecyclingUltra-high-performance ConcreteCompressive Stress-strain CurveCement-based Construction MaterialMechanics Of MaterialsStructural EngineeringPeak Strain Increase
In this paper, the effects of elevated temperatures on the strength and compressive stress-strain curve (SSC) of recycled coarse aggregate concrete with different replacement percentages are presented. 90 recycled coarse aggregate concrete prisms are heated up to 20, 200, 400, 600, 800oc. The results show that the compressive strength, split tensile strength, elastic modulus of recycled aggregate concrete specimens decline significantly as the temperature rise. While the peak strain increase of recycled aggregate concrete specimens as the temperature rise. Compared to the experimental curves, the proposed stress-strain relations for recycled aggregate concrete after exposure elevated temperatures can be used in practical engineering applications.