Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Impact of materials science and stereology on the design of experiments in concrete technology
Experimentation in concrete technology relies heavily on correct fulfilment of the various sampling principles from stereology and materials science. Random sampling is uneconomical and technically difficult, hence in this paper it is replaced by orthogonal tripod (orthrip) sampling. It is indicated how the efforts can be minimised. The cases of dispersed fibres and cracks are elaborated, making use of projections and sections. Size sampling is a major issue in the paper, requiring introduction of the materials science principles of stochastic heterogeneity and structural sensitivity. Samples are generally of subrepresentative size in concrete technology, so that the estimated characteristics of material structure or properties that are to some degree dependent on configuration (instead of solely on composition) will be biased. Yet comparison of the effects of technological parameters can be achieved in an unbiased way when sample size and sensitivity of observations are fixed proportions of the respective representative elements. This is illustrated with two examples.
Impact of materials science and stereology on the design of experiments in concrete technology
Experimentation in concrete technology relies heavily on correct fulfilment of the various sampling principles from stereology and materials science. Random sampling is uneconomical and technically difficult, hence in this paper it is replaced by orthogonal tripod (orthrip) sampling. It is indicated how the efforts can be minimised. The cases of dispersed fibres and cracks are elaborated, making use of projections and sections. Size sampling is a major issue in the paper, requiring introduction of the materials science principles of stochastic heterogeneity and structural sensitivity. Samples are generally of subrepresentative size in concrete technology, so that the estimated characteristics of material structure or properties that are to some degree dependent on configuration (instead of solely on composition) will be biased. Yet comparison of the effects of technological parameters can be achieved in an unbiased way when sample size and sensitivity of observations are fixed proportions of the respective representative elements. This is illustrated with two examples.
Impact of materials science and stereology on the design of experiments in concrete technology
Einfluss der Werkstoffwissenschaft und Stereologie auf die Versuchsplanung in der Betontechnologie
Stroeven, Piet (Autor:in)
2009
11 Seiten, 9 Bilder, 1 Tabelle, 15 Quellen
Aufsatz (Zeitschrift)
Englisch
Review paper – stereology: Historical perspective and applicability to concrete technology
| Online Contents | 2006
Review paper – stereology: Historical perspective and applicability to concrete technology
| Online Contents | 2006
Review paper – stereology: Historical perspective and applicability to concrete technology
| British Library Online Contents | 2006
Review paper - stereology: Historical perspective and applicability to concrete technology
| British Library Online Contents | 2006
Review paper – stereology: Historical perspective and applicability to concrete technology
| Online Contents | 2006