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Colloidal gas aphron (CGA) based foam cement system
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VELAYATI Arian,ROOSTAEI Morteza,RASOOLIMANESH Rasool,SOLEYMANI Mohammad,FATTAHPOUR Vahidoddin
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Table 3 Comparison of foamed cement and neat cement between Spaulding’s test results and current test results.
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| Cement type | Spaulding report | Current report | Poro-
sity/% | Permea-
bility/
10-3 μm2 | Compressive strength/
kPa | Elastic modulus/
GPa | Density/
(kg·m-3) | Poisson’s ratio | Poro-
sity/% | Permea-
bility/
10-3 μm2 | Compressive strength/
kPa | Elastic modulus/
GPa | Density/
(kg·m-3) | Poisson’s ratio | | Neat cement | 27.6 | 0.3 | 33417 | 8.00 | 1968 | 0.110 | 26 | 0.8 | 18327 | 5 | 1920 | 0.10 | Foamed cement
with 10% foam | 38.8 | 0.1 | 29648 | 7.48 | 1776 | 0.125 | 29 | 0.4 | 14056 | 4 | 1728 | 0.12 |
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