Influence of the graphene oxide nanosheet on tensile behavior and failure characteristics of the cement composites after high-temperature treatment
Source abstract
Abstract
Abstract Graphene oxide (GO) has great potential in enhancing the strength and durability of cement-based materials due to its superior nano properties. While existing studies focus on ambient-condition enhancements, the thermal stability of GO enhanced systems remains unexplored. This investigation systematically evaluates the thermal performance and failure mechanisms of GO-modified cement composite under elevated temperatures. The results show that after high-temperature degradation, the tensile strength of cement-based materials optimized with GO can be increased by 6.5–46.8%. The nucleation and pore-infilling effects of GO nanosheets can be better demonstrated under the condition of high-temperature degradation. The acoustic emission and surface characterization results suggest that the addition of GO can transform a large-scale violent disruption into multiple small-scale disruptions and significantly reinforce the integrity of the hardened cement matrix. Microscopic tests have shown that GO nanosheets optimize the matrix of cement-based materials and suppress the propagation of microcracks during their fracture process. The fractal dimension value of the optimized GO sample is smaller than that of the unoptimized sample. The enhanced thermal stability and fracture integrity of GO-modified cement materials highlight their potential for improving fire resistance in high-temperature engineering applications.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fire effects on concrete materials · Concrete and Cement Materials Research · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province, Shaoxing University , Shaoxing , 312000 , China
State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining & Technology , Xuzhou , 221116 , China
School of Transportation and Civil Engineering, Nantong University , Nantong , 226019 , China
Department of Mechanical, Aerospace and Civil Engineering, School of Engineering, The University of Manchester , Manchester , M13 9PL , United Kingdom
School of Public Health and Preventive Medicine, Monash University, Melbourne , Victoria , 3004 , Australia
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