2016
DOI: 10.1016/j.cemconcomp.2016.07.010
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Tensile strength of hydrated cement paste phases assessed by micro-bending tests and nanoindentation

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Cited by 93 publications
(65 citation statements)
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“…These beams, however, are relatively large (20-μm length) compared with the length scales of individual C-S-H phases and may reflect the response of a heterogonous composite. In addition, use of relatively a high beam current in the final milling step [1 nA in Němeček et al (2016) compared with 0.1 nA in this study] might have led to a large amount of Ga þ implantation in the porous microstructure and an increase in measured tensile strength.…”
Section: Resultsmentioning
confidence: 98%
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“…These beams, however, are relatively large (20-μm length) compared with the length scales of individual C-S-H phases and may reflect the response of a heterogonous composite. In addition, use of relatively a high beam current in the final milling step [1 nA in Němeček et al (2016) compared with 0.1 nA in this study] might have led to a large amount of Ga þ implantation in the porous microstructure and an increase in measured tensile strength.…”
Section: Resultsmentioning
confidence: 98%
“…That study, however, did not consider the presence of porosity in C-S-H, which would be expected to reduce these values. Němeček et al (2016) used microbeam bending tests to estimate tensile strength of C-S-H intermixed with other hydration products in the range of 264-700 MPa. These beams, however, are relatively large (20-μm length) compared with the length scales of individual C-S-H phases and may reflect the response of a heterogonous composite.…”
Section: Resultsmentioning
confidence: 99%
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“…However, current capabilities of the instrument do not allow to capture softening and the descending branch of the curves is not stable. Thus, the fracture energy was, in accordance with [6] assessed as supremum energy assuming that micro-beam behavior shows neither snap-back nor softening.…”
Section: Methodology and Experimentsmentioning
confidence: 97%
“…But until recently, it was not possible to access fracture properties of the small scale constituents. Němeček et al developed a methodology based on bending of FIB prepared micrometer sized specimens [6] where FIB allows preparation of geometrically precise microscopic samples and nanoindenter allows precise measurement of the bending response of the micro-beams.…”
Section: Introductionmentioning
confidence: 99%