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Systematic mercury porosimetry investigations on sandstones
Abstract The most important sources of error for mercury porosimetry are presented with the help of a literature survey and our own investigations. Systematic errors in the preparation of samples can cause an addition of 0.3% to the relative error. Furthermore, the results of an interlaboratory test with natural stone and mercury porosimetry are introduced. The incremental pore size curves of seven laboratories show narrow intervals of confidence and good correspondence for the positions of intrusion maxima. Within this area the strong point of the measuring method is to be found as it permits one to record six orders of magnitude of pore sizes with only one measurement. Of the four values that were investigated, namely pore area, bulk density, skeletal density and total porosity, the total pore area in particular can neither within one laboratory nor in a comparison between different laboratories be turned into a meaningful value. For bulk and skeletal density the relative values for repeatability and reproducibility are 25%. The total porosity shows bigger errors, as it has to be deduced from density values. Based on these results, recommendations for a measuring programme with the necessary parameters are introduced.
Systematic mercury porosimetry investigations on sandstones
Abstract The most important sources of error for mercury porosimetry are presented with the help of a literature survey and our own investigations. Systematic errors in the preparation of samples can cause an addition of 0.3% to the relative error. Furthermore, the results of an interlaboratory test with natural stone and mercury porosimetry are introduced. The incremental pore size curves of seven laboratories show narrow intervals of confidence and good correspondence for the positions of intrusion maxima. Within this area the strong point of the measuring method is to be found as it permits one to record six orders of magnitude of pore sizes with only one measurement. Of the four values that were investigated, namely pore area, bulk density, skeletal density and total porosity, the total pore area in particular can neither within one laboratory nor in a comparison between different laboratories be turned into a meaningful value. For bulk and skeletal density the relative values for repeatability and reproducibility are 25%. The total porosity shows bigger errors, as it has to be deduced from density values. Based on these results, recommendations for a measuring programme with the necessary parameters are introduced.
Systematic mercury porosimetry investigations on sandstones
Metz, F. (author) / Knöfel, D. (author)
1992
Article (Journal)
English
Systematic mercury porosimetry investigations on sandstones
| Springer Verlag | 1992
| Online Contents | 2000
| British Library Online Contents | 2000
Fractal geometry and mercury porosimetry
| British Library Online Contents | 2001