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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 2 Results of physical property tests on foamed cement (slurries).
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| Cement (slurry) formulation | Cement slurry recipe | Water to
cement ratio | Foam volume fraction/% | Density/
(kg·m-3) | Free water content/% | Poro-
sity/% | Permea-
bility/
10-3 μm2 | Elastic modulus/
GPa | Poisson’s ratio | Compressive strength/kPa | Foam
stability | Volume Reduction rate under 3445
kPa pressure/% | | 1 | 1 | 0.44 | 10 | 1728 | 0.4 | 29 | 0.40 | 4.00 | 0.12 | 14056 | Ok | 2 | | 2 | 1 | 1.00 | 20 | 1232 | 10.0 | 43 | 11.58 | 1.56 | 0.13 | 1860 | Ok | 5 | | 3 | 2 | 1.00 | 10 | 1168 | 10.0 | 34 | 4.85 | 1.60 | 0.12 | 2081 | Ok | --- | | 4 | 3 | 1.00 | 10 | 1040 | 0 | 24 | 0.70 | 1.12 | 0.15 | 4823 | Very Good | --- |
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