Residential College | false |
Status | 已發表Published |
Low-energy impact behavior of ambient cured engineered geopolymer composites | |
Cai, Jingming1,2; Pan, Jinlong1; Han, Jinsheng1; Lin, Yuanzheng1,3; Sheng, Zhaoliang1 | |
2022-04-01 | |
Source Publication | Ceramics International |
ISSN | 0272-8842 |
Volume | 48Issue:7Pages:9378-9389 |
Abstract | Engineered geopolymer composite (EGC) is a new kind of fiber reinforced geopolymer composite with tensile strain-hardening behaviors. This paper was intended to investigate the low-energy impact behaviors of EGC. To further reduce the carbon footprint and material cost of EGC, the feasibility of developing ambient cured EGC with cheap local PVA fiber was discussed according to the micromechanics-based analytical models. The compressive, tensile and impact tests of EGC, engineered cementitious composites (ECC), pure geopolymeric matrix and cementitious matrix were conducted and compared. It was found that the EGC specimens have similar tensile behaviors with ECC and the ultimate tensile strain of EGC can be as high as 7.5%. Under impact load, it was found that the PVA fibers could effectively restrict the crushing and spalling of geopolymeric matrix. Also, the dissipated energy of pure geopolymeric matrix is 3.8 times higher than that of cementitious matrix, indicating that it is recommendable to develop impact-resistant material based on geopolymeric matrix. The influences of NaOH molarity on the impact behaviors of EGC and geopolymeric matrix were discussed. It was found that the impact-resistance of EGC improved with the increase of NaOH molarity, while the threshold of NaOH molarity for geopolymeric matrix was recommended as 12 mol/L. Even though the compressive strength of EGC is lower than ECC, it can be concluded that EGC could have comparable or even higher impact-resistance than ECC under different low-velocity impact conditions. |
Keyword | Engineered Geopolymer Composite Metakaolin Ambient-curing Local Pva Fiber Low-energy Impact |
DOI | 10.1016/j.ceramint.2021.12.133 |
URL | View the original |
Indexed By | SCIE |
Language | 英語English |
WOS Research Area | Materials Science |
WOS Subject | Materials Science, Ceramics |
WOS ID | WOS:000772735700003 |
Scopus ID | 2-s2.0-85121731988 |
Fulltext Access | |
Citation statistics | |
Document Type | Journal article |
Collection | DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING |
Corresponding Author | Pan, Jinlong |
Affiliation | 1.Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing, China 2.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, China 3.Engineering Research Center of Safety and Protection of Explosion & Impact of Ministry of Education (ERCSPEIME), Southeast University, Nanjing, 211189, China |
First Author Affilication | Faculty of Science and Technology |
Recommended Citation GB/T 7714 | Cai, Jingming,Pan, Jinlong,Han, Jinsheng,et al. Low-energy impact behavior of ambient cured engineered geopolymer composites[J]. Ceramics International, 2022, 48(7), 9378-9389. |
APA | Cai, Jingming., Pan, Jinlong., Han, Jinsheng., Lin, Yuanzheng., & Sheng, Zhaoliang (2022). Low-energy impact behavior of ambient cured engineered geopolymer composites. Ceramics International, 48(7), 9378-9389. |
MLA | Cai, Jingming,et al."Low-energy impact behavior of ambient cured engineered geopolymer composites".Ceramics International 48.7(2022):9378-9389. |
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