Evaluation of capillary pore size characteristics in high-strength concrete at early ages

By S. Igarashi, Akio Watanabe, M. Kawamura. 2005

137 citations recorded by the source corpus.

The quantitative scanning electron microscope-backscattered electron (SEM-BSE) image analysis was used to evaluate capillary porosity and pore size distributions in high-strength concretes at early ages. The Powers model for the hydration of cement was applied to the interpretation of the results of image analysis. The image analysis revealed that pore size distributions in concretes with an extremely low water/binder ratio of 0.25 at early ages were discontinuous in the range of finer capillary pores. However, silica-fume-containing concretes with a water/binder ratio of 0.25 had larger amounts of fine pores than did concretes without silica fume. The presence of larger amounts of fine capillary pores in the concretes with silica fume may be responsible for greater autogenous shrinkage in the silica-fume-containing concretes at early ages.

Subfields: Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/46323e71f49b2993e4249494cee0b1692aaadf53

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In Civil and Structural Engineering

Citations in the corpus

Geopolymer and Portland cement concretes in simulated fire (2011, methodology): “The sorptivity coefficient (Collins and Sanjayan, 2008; Gonen and Yazicioglu, 2007; Igarashi et al., 2005; Khan, 2003; Olivia et al., 2008) was obtained by the following equation”
Quantification and characterization of microporosity by image processing, geometric measurement and statistical methods: Application on SEM images of clay materials (2011, unknown): “This relationship provides a possible way to analyze properties from the micrographs by measuring the geometry of micropores and particles (Igarashi et al., 2005; Sezer et al., 2008).”
Review on concrete nanotechnology (2016, background): “Igarashi, Watanabe, and Kawamura (2005) evaluated the capillary porosity and pore size distribution in high-strength concrete containing 10 wt% of SF at early ages.”
Property investigation of individual phases in cementitious composites containing silica fume and fly ash (2015, background): “, the segmentation of residual cement grains [18,19], calcium hydroxide [18,20], and pores [20–24].”