Analysis of the Mechanical Properties and Heat Resistance of Environmentally-friendly Uhpgc Incorporating Ceramic Waste
Ultra-high-performance concrete(UHPC)has found applications in various fields.Howev-er,for ensuring safety and extending service life,there remains a need for comprehensive investigation into the mechanical properties and heat resistance of ultra-high-performance geopolymer concrete(UHPGC)utilizing ceramic waste as a replacement for fine aggregates.The design,preparation,and testing of 12 UHPGC specimens with varying mixing ratios were performed.The aim was to analyze the influence of ceramic particles and steel fiber admixture on the mechanical properties and heat-re-sistant performance of UHPGC through comprehensive mechanical and heat-resistant testing.The findings indicate that as the ceramic waste content in the fine aggregate increased,the flow degree and flow diameter of UHPGC decreased;a higher dosage of ceramic particles led to a reduction in the set-ting time of UHPGC;the compressive properties of UHPGC improved with increased steel fiber dos-age,yet the addition of ceramic particles resulted in decreased compressive properties,with the com-pressive strength of the specimen containing 22.5%ceramic particles decreasing by 22.88%;utilizing ceramic particles in preparation enabled the production of UHPGC with a 56 day strength exceeding 120 MPa while preserving fundamental concrete properties;UHPGC samples incorporating fine ce-ramic aggregates exhibited significant residual compressive strength at 600℃;UHPGC mixes demon-strated a thermally stable structure at 700℃,whereas mixes with ceramic particle additives exhibited stability at 600℃.
fine ceramic wasteUHPGCmechanical propertiesheat resistance properties
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