Journal ArticleDOI
Nanoindentation investigation of creep properties of calcium silicate hydrates
TLDR
In this paper, the creep properties of calcium silicate hydrates (C-S-H) are assessed by means of nanoindentation creep experiments on a wide range of substoichiometric cement pastes.About:
This article is published in Cement and Concrete Research.The article was published on 2013-10-01. It has received 231 citations till now. The article focuses on the topics: Creep & Nanoindentation.read more
Citations
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Journal ArticleDOI
A review on the mechanical properties of cement-based materials measured by nanoindentation
Chuanlin Hu,Zongjin Li +1 more
TL;DR: In this paper, a comprehensive review on the mechanical properties of cement-based materials measured by nanoindentation is presented, and the critical aspects of nano-indentations in application to building materials are discussed.
Journal ArticleDOI
Micromechanical investigation of Portland cement paste
Chuanlin Hu,Zongjin Li +1 more
TL;DR: In this article, a comprehensive experimental and theoretical micromechanical investigation was performed on Portland cement paste by the coupled nanoindentation and scanning electron microscope method, and the mechanical parameters (e.g., indentation modulus and hardness) of individual active phases present in Portland cement were estimated by the proposed method.
Journal ArticleDOI
Properties of early-age concrete relevant to cracking in massive concrete
TL;DR: In this article, an overview of the early-age properties of concrete, from a materials science and concrete engineering perspective, is provided. And the authors contribute to gap analysis and to improve the strategy for evaluation methods of the risk of cracking in mass concrete.
Journal ArticleDOI
Mechanical property, nanopore structure and drying shrinkage of metakaolin-based geopolymer with waste glass powder
TL;DR: In this paper, the authors investigated the mechanical properties, nanopore structure and drying shrinkage behavior of the metakaolin-based geopolymer mixtures containing 0%−20% waste glass powder.
Journal ArticleDOI
Elastic and creep properties of young cement paste, as determined from hourly repeated minute-long quasi-static tests
Muhammad Irfan-ul-Hassan,Muhammad Irfan-ul-Hassan,Bernhard Pichler,R. Reihsner,Christian Hellmich +4 more
TL;DR: In this paper, the elastic stiffness and the creep properties of ordinary Portland cement pastes conditioned at 20°C were characterized by means of a power-law expression including elastic and creep moduli, as well as a creep exponent.
References
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Journal ArticleDOI
An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments
Warren C. Oliver,George M. Pharr +1 more
TL;DR: In this paper, the authors used a Berkovich indenter to determine hardness and elastic modulus from indentation load-displacement data, and showed that the curve of the curve is not linear, even in the initial stages of the unloading process.
Book
The Hardness of Metals
TL;DR: Hardness measurements with conical and pyramidal indenters as mentioned in this paper have been used to measure the area of contact between solids and the hardness of ideal plastic metals. But they have not yet been applied to the case of spherical indenters.
Journal ArticleDOI
The effect of two types of C-S-H on the elasticity of cement-based materials: Results from nanoindentation and micromechanical modeling
TL;DR: In this paper, a two types of calcium-silicate-hydrate (C-S-H) exist in cement-based materials, but less is known about how the two types affect the mechanical properties.
Journal ArticleDOI
Composition and density of nanoscale calcium–silicate–hydrate in cement
TL;DR: This study measures the composition and solid density of the principal binding reaction product of cement hydration, calcium-silicate-hydrate (C-S-H) gel, one of the most complex of all gels, and quantifies a nanoscale calcium hydroxide phase that coexists with C- S-H gel.
Journal ArticleDOI
A realistic molecular model of cement hydrates
Roland J.-M. Pellenq,Akihiro Kushima,Rouzbeh Shahsavari,Krystyn J. Van Vliet,Markus J. Buehler,Sidney Yip,Franz-Josef Ulm +6 more
TL;DR: A molecular model of C-S-H based on a bottom-up atomistic simulation approach that considers only the chemical specificity of the system as the overriding constraint is proposed, which predicts other essential structural features and fundamental physical properties amenable to experimental validation, which suggest that the C- S-H gel structure includes both glass-like short-range order and crystalline features of the mineral tobermorite.
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An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments
Warren C. Oliver,George M. Pharr +1 more