Model of the Mechanical Behavior of Cementitious Matrices Reinforced with Nanomaterials
Joint Authors
Pantazopoulou, Stavroula
Balopoulos, Victor D.
Archontas, Nikolaos
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-03-20
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
CNTs and CNFs have been introduced as a nanoscale reinforcing material to cementitious composites, for stiffening and strengthening the microstructure.
This technology is motivated by the need to control crack initiation in the cementitious gel before it propagates into visible crack formations.
Experimental evidence supports this concept; however, testing at the nanoscale may only be conducted through nanoindentation, which has a limited range only providing localized results that cannot be extrapolated to general stress states.
To evaluate the restraining action of nanomaterials in the gel microstructure, a computational mechanistic model has been developed where the material phases (gel, nanotubes, and pores) are modeled explicitly allowing for natural randomness in their distribution and orientation.
Repeated analysis with identical input data reproduces the statistical scatter observed in laboratory tests on identical material samples.
The formulation uses a discrete element approach; the gel structure is represented by a random network of hydrates and successfully reproduces the known trends in mechanical behavior of cementitious materials (pressure and restraint sensitive material behavior) and the small ratio of tensile to compressive strength.
Simulations illustrate that it is possible to computationally reproduce the measured properties and behavior of fiber-reinforced cement composites using information from simple laboratory tests.
American Psychological Association (APA)
Balopoulos, Victor D.& Archontas, Nikolaos& Pantazopoulou, Stavroula. 2017. Model of the Mechanical Behavior of Cementitious Matrices Reinforced with Nanomaterials. Journal of Engineering،Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1175177
Modern Language Association (MLA)
Balopoulos, Victor D.…[et al.]. Model of the Mechanical Behavior of Cementitious Matrices Reinforced with Nanomaterials. Journal of Engineering No. 2017 (2017), pp.1-10.
https://search.emarefa.net/detail/BIM-1175177
American Medical Association (AMA)
Balopoulos, Victor D.& Archontas, Nikolaos& Pantazopoulou, Stavroula. Model of the Mechanical Behavior of Cementitious Matrices Reinforced with Nanomaterials. Journal of Engineering. 2017. Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1175177
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175177