Details
| Original language | English |
|---|---|
| Pages (from-to) | 577-593 |
| Number of pages | 17 |
| Journal | Computers, Materials and Continua |
| Volume | 67 |
| Issue number | 1 |
| Publication status | Published - 12 Jan 2021 |
Abstract
The microcapsule-contained self-healing materials are appealing since they can heal the cracks automatically and be effective for a long time. Although many experiments have been carried out, the influence of the size of microcapsules on the self-healing effect is still not well investigated. This study uses the two-dimensional discrete element method (DEM) to investigate the interaction between one microcapsule and one microcrack. The influence of the size of microcapsules is considered. The potential healing time and the influence of the initial damage are studied. The results indicate that the coalescence crack is affected by the size of holes. The elastic modulus, the compressive strength and the coalescence stress decrease with the rising radius of holes. The initial damage in experiments should be greater than 95% of the compressive strength to enhance the self-healing effect. The large microcapsules require slight initial damage. Both a new type of displacement field near the crack and a new category of coalescence crack are observed. The influence of sizes of holes on the cracking behavior of concrete with a circular hole and a pre-existing crack is clarified.
Keywords
- Cracking processes, DEM, Microcapsule, Size
ASJC Scopus subject areas
- Materials Science(all)
- Biomaterials
- Mathematics(all)
- Modelling and Simulation
- Engineering(all)
- Mechanics of Materials
- Computer Science(all)
- Computer Science Applications
- Engineering(all)
- Electrical and Electronic Engineering
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In: Computers, Materials and Continua, Vol. 67, No. 1, 12.01.2021, p. 577-593.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The interaction between microcapsules with different sizes and propagating cracks
AU - Zhuang, Xiaoying
AU - Nguyen-Xuan, Hung
AU - Zhou, Shuai
N1 - Funding Information: Funding Statement: This work was supported by the National Natural Science Foundation of China (No. 52002040) and the State Key Laboratory of High Performance Civil Engineering Materials (No. 2020CEM004).
PY - 2021/1/12
Y1 - 2021/1/12
N2 - The microcapsule-contained self-healing materials are appealing since they can heal the cracks automatically and be effective for a long time. Although many experiments have been carried out, the influence of the size of microcapsules on the self-healing effect is still not well investigated. This study uses the two-dimensional discrete element method (DEM) to investigate the interaction between one microcapsule and one microcrack. The influence of the size of microcapsules is considered. The potential healing time and the influence of the initial damage are studied. The results indicate that the coalescence crack is affected by the size of holes. The elastic modulus, the compressive strength and the coalescence stress decrease with the rising radius of holes. The initial damage in experiments should be greater than 95% of the compressive strength to enhance the self-healing effect. The large microcapsules require slight initial damage. Both a new type of displacement field near the crack and a new category of coalescence crack are observed. The influence of sizes of holes on the cracking behavior of concrete with a circular hole and a pre-existing crack is clarified.
AB - The microcapsule-contained self-healing materials are appealing since they can heal the cracks automatically and be effective for a long time. Although many experiments have been carried out, the influence of the size of microcapsules on the self-healing effect is still not well investigated. This study uses the two-dimensional discrete element method (DEM) to investigate the interaction between one microcapsule and one microcrack. The influence of the size of microcapsules is considered. The potential healing time and the influence of the initial damage are studied. The results indicate that the coalescence crack is affected by the size of holes. The elastic modulus, the compressive strength and the coalescence stress decrease with the rising radius of holes. The initial damage in experiments should be greater than 95% of the compressive strength to enhance the self-healing effect. The large microcapsules require slight initial damage. Both a new type of displacement field near the crack and a new category of coalescence crack are observed. The influence of sizes of holes on the cracking behavior of concrete with a circular hole and a pre-existing crack is clarified.
KW - Cracking processes
KW - DEM
KW - Microcapsule
KW - Size
UR - http://www.scopus.com/inward/record.url?scp=85099386907&partnerID=8YFLogxK
U2 - 10.32604/cmc.2021.014688
DO - 10.32604/cmc.2021.014688
M3 - Article
AN - SCOPUS:85099386907
VL - 67
SP - 577
EP - 593
JO - Computers, Materials and Continua
JF - Computers, Materials and Continua
SN - 1546-2218
IS - 1
ER -