. "Kopeck\u00FD, Lubom\u00EDr" . "[811E1CFDF2E6]" . . "3"^^ . "Z(MSM6840770003)" . . . . "41" . "Jir\u00E1sek, Milan" . . . "Davydov, Denis" . . . "Critical Aspects of Nano-Indentation Technique in Application to Hardened Cement Paste"@en . "calcium-silicate hydrate; elastic modulus; micromechanics; mechanical properties; statistical nanoindentation"@en . "RIV/68407700:21110/11:00171624!RIV12-MSM-21110___" . "10"^^ . "10.1016/j.cemconres.2010.09.001" . "Critical Aspects of Nano-Indentation Technique in Application to Hardened Cement Paste" . . "Critical Aspects of Nano-Indentation Technique in Application to Hardened Cement Paste"@en . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Davydov, Denis" . . "1" . "Critical Aspects of Nano-Indentation Technique in Application to Hardened Cement Paste" . "21110" . . "000285900500003" . "Several open questions related to the experimental protocol and processing of data acquired by the nano-indentation technique are investigated. The volume fractions of mechanically different phases obtained from statistical analysis are shown to be different from those obtained by back-scattered electron image analysis and X-ray diffraction method on the same paste. Judging from transmission electron microscope images, the representative volume element of low-density calcium-silicate hydrates can be considered to be around 500 nm, whereas for high-density C-S-H it is about 100 nm. This raises the question how the appropriate penetration depth for NI experiments should be selected. Changing the maximum load from 1 mN to 5 mN, the effect of penetration depth on the experimental results is studied. As an alternative, a %22manual%22 indentation method is proposed." . "RIV/68407700:21110/11:00171624" . "Cement and Concrete Research" . . . . "3"^^ . "Several open questions related to the experimental protocol and processing of data acquired by the nano-indentation technique are investigated. The volume fractions of mechanically different phases obtained from statistical analysis are shown to be different from those obtained by back-scattered electron image analysis and X-ray diffraction method on the same paste. Judging from transmission electron microscope images, the representative volume element of low-density calcium-silicate hydrates can be considered to be around 500 nm, whereas for high-density C-S-H it is about 100 nm. This raises the question how the appropriate penetration depth for NI experiments should be selected. Changing the maximum load from 1 mN to 5 mN, the effect of penetration depth on the experimental results is studied. As an alternative, a %22manual%22 indentation method is proposed."@en . . "192263" . . "0008-8846" . . .