Print Email Facebook Twitter A reappraisal of the ink-bottle effect and pore structure of cementitious materials using intrusion-extrusion cyclic mercury porosimetry Title A reappraisal of the ink-bottle effect and pore structure of cementitious materials using intrusion-extrusion cyclic mercury porosimetry Author Zhang, Y. (TU Delft Materials and Environment; Fuzhou University) Wu, Kai (Tongji University) Yang, Zhengxian (Fuzhou University) Ye, G. (TU Delft Materials and Environment) Date 2022 Abstract Reliable characterization of the pore structure is essentially important for transport-related durability studies of cementitious materials. Mercury intrusion porosimetry has been commonly used for pore structure measurement while the ink-bottle effect significantly affects the trustworthiness of pore size features of cementitious materials. Pressurization-depressurization cycling mercury intrusion porosimetry (PDC-MIP) is an alternative approach previously reported with the purpose to provide better estimates of pore size results. It is found however that the PDC-MIP greatly overestimates the ink-bottle pore volume owing to the incomplete extrusion of mercury in throat pores after the pressurization-depressurization cycle. Intrusion-extrusion cyclic mercury porosimetry (IEC-MIP), as a further improvement, is then described, which can reliably capture the ink-bottle effect and obtain a clear picture of the distribution of the ink-bottle pores in cementitious materials. The ink-bottle effect of cement pastes is observed being pore size-dependent and the role of critical pores is emphasized. Water-cement ratio primarily changes the effective porosity while plays a minor role in the ink-bottle porosity. The addition of reactive blends substantially enhances the ink-bottle effect during mercury penetration into small pores. IEC-MIP tests, together with a unique data analysis, enable to obtain a more truthful pore size distribution. Subject ConnectivityCritical pore diameterInk-bottle effectMercury porosimetryPore size distribution To reference this document use: http://resolver.tudelft.nl/uuid:180844fb-4515-49bd-8e0e-4fce21f5b286 DOI https://doi.org/10.1016/j.cemconres.2022.106942 Embargo date 2023-07-01 ISSN 0008-8846 Source Cement and Concrete Research, 161 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Y. Zhang, Kai Wu, Zhengxian Yang, G. Ye Files PDF 1_s2.0_S0008884622002344_main.pdf 6.04 MB Close viewer /islandora/object/uuid:180844fb-4515-49bd-8e0e-4fce21f5b286/datastream/OBJ/view