Development of pore structure, moisture sorption and transport properties in fly ash blended cement-based materials
(2020) In Construction and Building Materials 261.- Abstract
This study documents how the pore structure develops with time in cement-based materials with varying fly ash replacement. Heat production was measured during the first days, water vapour desorption isotherms were determined at different times up to 18 months, and moisture transport properties were measured after one year. Long-term fly ash reactions alter the pore structure considerably. The fly ash does not fill pore volume but refines porosity. After one year, fly ash replacement resulted in a factor 2–5 lower moisture diffusion coefficients. Aggregates have little effect on the measured pore structure; sorption isotherms for mortar and concrete can be determined on cement paste.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/98ca66b7-46c7-4e62-9c0c-6e67186c21a7
- author
- Linderoth, O. LU ; Johansson, P. LU and Wadsö, L. LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Durability, Moisture transport, Permeability, Pore structure, SCM, Sorption
- in
- Construction and Building Materials
- volume
- 261
- article number
- 120007
- publisher
- Elsevier
- external identifiers
-
- scopus:85087757912
- ISSN
- 0950-0618
- DOI
- 10.1016/j.conbuildmat.2020.120007
- project
- Hydration, pore structure, and related moisture properties of fly ash blended cement-based materials
- language
- English
- LU publication?
- yes
- id
- 98ca66b7-46c7-4e62-9c0c-6e67186c21a7
- date added to LUP
- 2020-07-21 13:09:20
- date last changed
- 2022-04-18 23:36:22
@article{98ca66b7-46c7-4e62-9c0c-6e67186c21a7, abstract = {{<p>This study documents how the pore structure develops with time in cement-based materials with varying fly ash replacement. Heat production was measured during the first days, water vapour desorption isotherms were determined at different times up to 18 months, and moisture transport properties were measured after one year. Long-term fly ash reactions alter the pore structure considerably. The fly ash does not fill pore volume but refines porosity. After one year, fly ash replacement resulted in a factor 2–5 lower moisture diffusion coefficients. Aggregates have little effect on the measured pore structure; sorption isotherms for mortar and concrete can be determined on cement paste.</p>}}, author = {{Linderoth, O. and Johansson, P. and Wadsö, L.}}, issn = {{0950-0618}}, keywords = {{Durability; Moisture transport; Permeability; Pore structure; SCM; Sorption}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Construction and Building Materials}}, title = {{Development of pore structure, moisture sorption and transport properties in fly ash blended cement-based materials}}, url = {{http://dx.doi.org/10.1016/j.conbuildmat.2020.120007}}, doi = {{10.1016/j.conbuildmat.2020.120007}}, volume = {{261}}, year = {{2020}}, }