Electrothermal effect of carbon fiber and graphite reinforced metakaolin‐based geopolymer
Source abstract
Abstract
Abstract This paper investigates the influence of carbon fiber and graphite on the cyclic electrothermal performance of geopolymers (inorganic polymers). It was observed that carbon fibers, graphite, and the carbon fiber/graphite composite could form a stable conductive network at low voltage (3 V). However, under high voltages (9 and 12 V), the current of the geopolymer exhibited a peak shape in the first cycle, with higher voltages resulting in larger peak values and decreased conductivity in subsequent cycles. While graphite improved electrical and thermal conductivity, it weakened the microstructure, leading to an increase in microcracks and voids, and a reduction in the strength of geopolymers. The cumulative energy during the electrothermal process was calculated. The failure mechanism of the conductive network in the geopolymer during cyclic electrical heating was explained, highlighting the disruptive effect of gel shrinkage due to water loss on conductive networks.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Smart Materials for Construction · Concrete and Cement Materials Research · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Civil Engineering and Architecture Zhejiang University Hangzhou PR China
Institute for Composites Science Innovation School of Materials Science and Engineering Zhejiang University Hangzhou PR China
Shanxi‐Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan PR China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province · Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering
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