Micromechanical multiscale fracture model for compressive strength of blended cement pastes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00240801" target="_blank" >RIV/68407700:21110/16:00240801 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0008884615002999" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0008884615002999</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cemconres.2015.12.003" target="_blank" >10.1016/j.cemconres.2015.12.003</a>
Alternative languages
Result language
angličtina
Original language name
Micromechanical multiscale fracture model for compressive strength of blended cement pastes
Original language description
The evolution of compressive strength belongs to the most fundamental properties of cement paste. Driven by an increasing demand for clinker substitution, the paper presents a new four-level micromechanical model for the prediction of compressive strength of blended cement pastes. The model assumes that the paste compressive strength is governed by apparent tensile strength of the C-S-H globule. The multiscale model takes into account the volume fractions of relevant chemical phases and encompasses a spatial gradient of C-S-H between individual grains. The presence of capillary pores, the C-S-H spatial gradient, clinker minerals, SCMs, other hydration products, and air further decrease compressive strength. Calibration on 95 experimental compressive strength values shows that the apparent tensile strength of the C-S-H globule yields approx. 320 MPa. Sensitivity analysis reveals that the “C-S-H/space” ratio, followed by entrapped or entrained air and the spatial gradient of C-S-H, have the largest influence on compressive strength.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JN - Civil engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA16-20008S" target="_blank" >GA16-20008S: Multiscale modeling of early age concrete</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Cement and Concrete Research
ISSN
0008-8846
e-ISSN
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Volume of the periodical
83
Issue of the periodical within the volume
May
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
188-202
UT code for WoS article
000375518500018
EID of the result in the Scopus database
2-s2.0-84960091635