STRENGTH SCALING FROM C-S-H GLOBULES TO CEMENT PASTE USING MULTISCALE HIERARCHICAL MODELING

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00324318" target="_blank" >RIV/68407700:21110/18:00324318 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
STRENGTH SCALING FROM C-S-H GLOBULES TO CEMENT PASTE USING MULTISCALE HIERARCHICAL MODELING
Original language description
Strength scaling from C-S-H globules to cement paste using hierarchical modelling offers important insight into mechanics of stress transfer and strength. Recent results from molecular simulation, microbending tests, micromechanics and macroscale data allowed us to build a more consistent hierarchical model while having consistent strength properties at each level. The level of C-S-H can identify tensile strength of C-S-H globule as high as 2500 MPa, validating experimental results on submicrometer scale. Internal defects of mm size control substantially macroscopic strength properties in the pastes; this is demonstrated on a mature cement paste with w/c=0.35. Origin of internal defects lies likely in entrapped air and chemical shrinkage and they seem to be present in the majority of experimental samples. That is the main reason why unreinforced cementitious composites seldom exceed tensile strength of ~15 MPa.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the Workshop on Concrete Modelling and Materials Behaviour in honor of Professor Klaas van Breugel
ISBN
978-2-35158-214-5
ISSN
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e-ISSN
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Number of pages
11
Pages from-to
48-58
Publisher name
Rilem Publications s.a.r.l.
Place of publication
Bagneux
Event location
Delft
Event date
Aug 26, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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