Effective properties of a fly ash geopolymer: Synergistic application of X-ray synchrotron tomography, nanoindentation, and homogenization models
Sumanta Das,Pu Yang,Sudhanshu S. Singh,J.C.E. Mertens,Xianghui Xiao,Nikhilesh Chawla,Narayanan Neithalath +6 more
TLDR
In this paper, the phase volume fractions and elastic properties are used in multi-step mean field homogenization (Mori-Tanaka and double inclusion) models to determine the homogenized macroscale elastic modulus of the composite.About:
This article is published in Cement and Concrete Research.The article was published on 2015-12-01 and is currently open access. It has received 104 citations till now. The article focuses on the topics: Elastic modulus & Young's modulus.read more
Citations
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A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete
TL;DR: In this paper, the micro-structure analyses of the geopolymer specimens and comparison of geopolymers with various binders are presented. But, most of the products revealed a wide hump in the XRD analysis due to the amorphous structure of aluminosilicate, and the results showed that the binders mixed with lower sodium silicate to sodium hydroxide mass ratio of 2.0-2.5 tend to react more efficiently.
Journal ArticleDOI
Multiscale X-ray tomography of cementitious materials: A review
TL;DR: X-ray computed tomography (CT) is a non-destructive technique that offers a 3D insight into the microstructure of thick (opaque) samples with virtually no preliminary sample preparation as mentioned in this paper.
Journal ArticleDOI
Advances in characterizing and understanding the microstructure of cementitious materials
Paulo J.M. Monteiro,Guoqing Geng,Delphine Marchon,Jiaqi Li,Prasanth Alapati,Kimberly E. Kurtis,Mohammad Javad Abdolhosseini Qomi +6 more
TL;DR: In this paper, the authors present a short but critical presentation of physical chemistry approaches that aim to link the chemical composition, texture, and microstructure of the cement hydrates.
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Multiscale micromechanical analysis of alkali-activated fly ash-slag paste
Guohao Fang,Mingzhong Zhang +1 more
TL;DR: In this article, the microstructure and micromechanical properties of AAFS paste from nano-scale to micro-scale were investigated using 29Si nuclear magnetic resonance, Fourier transform infrared spectroscopy, backscattered electron microscopy, and mercury intrusion porosimetry.
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Automated coupling of NanoIndentation and Quantitative Energy-Dispersive Spectroscopy (NI-QEDS): A comprehensive method to disclose the micro-chemo-mechanical properties of cement pastes
TL;DR: In this article, a typical Portland cement paste was compared with a new automatic method coupling nano-indentation and Quantitative Energy-Dispersive Spectroscopy (NI-QEDS), which enabled distinguishing chemical phases having strongly overlapping mechanical properties.
References
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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
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.
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The Determination of the Elastic Field of an Ellipsoidal Inclusion, and Related Problems
TL;DR: In this paper, it is shown that to answer several questions of physical or engineering interest, it is necessary to know only the relatively simple elastic field inside the ellipsoid.
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Average stress in matrix and average elastic energy of materials with misfitting inclusions
Trevor A. Mori,K Tanaka +1 more
TL;DR: In this paper, a method of calculating the average internal stress in the matrix of a material containing inclusions with transformation strain is presented. But the authors do not consider the effects of the interaction among the inclusions and of the presence of the free boundary.
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Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology
Warren C. Oliver,George M. Pharr +1 more
TL;DR: In this article, the authors review the current understanding of the mechanics governing elastic-plastic indentation as they pertain to load and depth-sensing indentation testing of monolithic materials and provide an update of how they now implement the method to make the most accurate mechanical property measurements.
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A Review of Nanoindentation Continuous Stiffness Measurement Technique and Its Applications
Xiaodong Li,Bharat Bhushan +1 more
TL;DR: In this article, the continuous stiffness measurement (CSM) technique was used for the characterization of layered materials and nonhomogeneous composites and applied to the measurement of contact stiffness, elastic modulus, hardness, creep resistance, and fatigue properties of the materials used in magnetic storage devices.
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