Research Article
Pore Structure Characterization of Hardened Cement Paste by Multiple Methods
Table 3
Porosity and pore surface area of hardened cement paste.
| | Method | Samples | Porosity (%) | Relative volume (%) | Pore surface area (m2/g) | | Gel pores | Small capillary pores | Large capillary pores | Macropores | | 1–10 nm | 10–100 nm | 0.1–1 μm | 1–10 μm | 10–1000 μm |
| | NS | NS1 | 3.8 | 20.8 | 79.2 | — | — | — | 7.339 | | NS2 | 5.5 | 14.1 | 86.0 | 11.637 | | NS3 | 5.2 | 6.9 | 92.9 | 10.859 |
| | MIP | MIP1 | 14.8 | 2.8 | 69.8 | 5.1 | 1.6 | 6.0 | 5.368 | | MIP2 | 8.4 | 0.7 | 71.0 | 17.1 | 2.3 | 8.7 | 2.603 | | MIP3 | 4.7 | 0.0 | 59.4 | 15.7 | 4.5 | 18.3 | 0.636 | | MIP4 | 11.8 | 0.3 | 77.0 | 12.5 | 1.8 | 8.6 | 5.378 |
| | NMR | NMR1 | 10.2 | 48.3 | 37.4 | 5.0 | 4.3 | 5.1 | | | NMR2 | 6.5 | 51.1 | 37.3 | 4.8 | 6.8 | 0.0 | |
| | XCT | XCT1 | 1.8 | — | — | — | 72.0 | 28.0 | 0.001 | | XCT2 | 1.7 | 68.8 | 31.2 | 0.001 |
| | FIB/SEM | FS1 | 16.1 | — | 78.0 | 22.0 | — | — | 1.851 | | FS2 | 16.7 | 60.8 | 39.2 | 1.841 |
| | HIM | H1 | 4.0 | 0.7 | 62.7 | 20.6 | — | — | — | | H2 | 3.4 | 0.9 | 53.7 | 20.0 | |
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