Nanoparticle simulations of logarithmic creep and microprestress relaxation in concrete and other disordered solids

Masoero, Enrico; Luzio, Giovanni Di

doi:10.1016/j.cemconres.2020.106181

Cited by 15 publications

(2 citation statements)

References 37 publications

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“…Ab-initio [22,77], hardness [23,24,61,64], shear strength [78], tensile strength [79], compressive strength [24,80,81], fracture [82,83], modulus [25][26][27]84] Nanoscale or microscale Potential mean force Surface forces [49,77,85] MC simulation Surface forces [86,87] FEM Modulus, hardness [35,36] Coarse-grained model (Discrete element model) Modulus, hardness [37][38][39][40], creep [88] Figure 2 Multiscale mechanical models of C-S-H. Images are adopted from [18,36,37,[47][48][49][50][51]. Reproduced with permissions.…”

Section: Molecular Scale Molecular Dynamicsmentioning

confidence: 99%

The missing link in the bottom-up theory of mechanical properties of calcium silicate hydrate

Geng,

Zhang

2023

RILEM Tech Lett

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Calcium silicate hydrate (C-S-H) is the primary binding phase in modern concrete. While significant progress has been made in understanding the structure and behavior of C-S-H at atomistic scale and macro scale, there lacks a theory that links them. This review paper focuses on identifying the key challenges in bridging the gap between the atomic-scale characteristics of C-S-H and its larger scale mechanical behaviors. Recent experimental and simulation work on the multiscale mechanical properties of C-S-H is summarized. The need for integrating experimental observations, theoretical models, and computational simulations to establish a comprehensive and predictive bottom-up theory of the mechanical properties of C-S-H is highlighted. Such a theory will enable a deeper understanding of C-S-H behavior and pave the way for the design and optimization of cementitious materials with tailored mechanical performance.

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Section: Molecular Scale Molecular Dynamicsmentioning

confidence: 99%

The missing link in the bottom-up theory of mechanical properties of calcium silicate hydrate

Geng,

Zhang

2023

RILEM Tech Lett

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show abstract

“…An important limitation of these models, however, is that they do not predict the evolution of mechanical stress and deformations accompanying the chemical transformations. Such mechanical aspects are essential to describe degradation phenomena (and thus self-healing) in concrete, e. g. crystallisation pressure [142], eigenstress relaxation during creep [143,144], and drying shrinkage [145]. A focus on mechanical interactions and related processes characterizes a more recent class of particle-based, mesoscale simulations of cementitious materials [146].…”

Section: Models At Mesoscalementioning

confidence: 99%