A feasibility study on improving the crack resistance of thin-walled UHPC members by reinforcement with Fe-SMA wires
Source abstract
Abstract
To investigate the potential for further enhancing the cracking resistance of thin-walled UHPC by prestressing, the uniaxial tensile and three-point bending experiments for UHPC specimens reinforced with iron-based shape memory alloy (Fe-SMA) wires were conducted. The specimens were placed in an oven and heated to 150 °C, 200 °C, and 250 °C, which was intended to activate the Fe-SMA wires to produce self-prestress. The characteristics of different reinforced methods and heating temperatures were systematically compared. The cracking load and the crack development were recorded using Digital Image Correlation (DIC) techniques. The result shows that at the temperature of 150 ºC, compared to the dog-bone shaped specimens without reinforcement and the specimens with steel wires, the mean cracking load of specimens with Fe-SMA wires was enhanced by 13.4% and 9.8%, respectively. The study preliminary verified that this method can activate Fe-SMA inside UHPC.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Innovative concrete reinforcement materials · Structural Behavior of Reinforced Concrete · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing, China
National and Local Joint Engineering Research Center for Intelligent Construction and Maintenance, Southeast University, Nanjing, China
The Hong Kong Polytechnic University, Hong Kong, China
Sobute New Materials Co., Ltd, Nanjing, China
Funding
Excellent Youth Foundation of Jiangsu Province of China · National Natural Science Foundation of China · Carbon Emission Peak and Carbon Neutrality Innovative Science Foundation of Jiangsu Province: “The key research and demonstration projects of future low-carbon emission buildings” · Fundamental Research Funds for the Central Universities
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