Relationship between electrical conductivity and spatial structure of capillary pores in cement pastes

Author(s): Shin-ichi Igarashi
Paper category: Conference
Book title: Rheology and processing of Construction Materials – 7th RILEM International Conference on Self-Compacting Concrete and 1st RILEM International Conference on Rheology and Processing of Construction Materials
Editor(s): Nicolas Roussel and Hela Bessaies-Bey
Print ISBN: 978-2-35158-137-7
e-ISBN: 978-2-35158-138-4
Publisher: RILEM Publications SARL
Pages: 333-340
Total Pages: 8
Language: English

Electrical conductivities of hardened cement pastes were investigated in relation to spatial structure of coarse capillary pores. There exists a good correlation between the porosity and the electrical conductivity in ordinary cement pastes. Spatial statistics for the coarse pores were also positively correlated to the porosity. Connectivity of invisible fine capillary pores seemed increasing events with the fine porosity. On the other hand, the conductivity was less correlated to the spatial structure of coarse pores in cement pastes with mineral admixtures. The conductivity was smaller for the coarse porosity in the cement pastes. Connectivity that used fine pores as effective paths was decreased by the incorporation of mineral admixture.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00