A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Analysis of point load test as a method for preliminary geotechnical classification of rocks
Abstract This paper deals with the analysis of the point load compression test made on irregular-shaped rock fragments, proposed in the late 50’s by Protodiakonov. An ample revision of the literature on the subject has been made, and a series of tests, using seven different types of rock materials, has been developed. The results obtained from these tests showed that parameters generally used in literature to relate the unconfined compressive (or tensile) strength of materials, resulting from point load tests, can lead to scattered results, due mainly to the scale effect, of great evidence in such tests. It seems possible to obtain compressive (and tensile) strength of rocks, if the ratio between failure load and the distance between load application poins, with a 3/2 exponent, is considered, in field work, as being the "point load strength index".
Analysis of point load test as a method for preliminary geotechnical classification of rocks
Abstract This paper deals with the analysis of the point load compression test made on irregular-shaped rock fragments, proposed in the late 50’s by Protodiakonov. An ample revision of the literature on the subject has been made, and a series of tests, using seven different types of rock materials, has been developed. The results obtained from these tests showed that parameters generally used in literature to relate the unconfined compressive (or tensile) strength of materials, resulting from point load tests, can lead to scattered results, due mainly to the scale effect, of great evidence in such tests. It seems possible to obtain compressive (and tensile) strength of rocks, if the ratio between failure load and the distance between load application poins, with a 3/2 exponent, is considered, in field work, as being the "point load strength index".
Analysis of point load test as a method for preliminary geotechnical classification of rocks
G., Guidicini (author) / Nieble, C. M. (author) / de Cornides, A. T. (author)
1973
Article (Journal)
English
The point-load test in geotechnical practice
| Elsevier | 1974
Geotechnical characteristics of rocks
| Engineering Index Backfile | 1967
The Point Load Test in the Persian Gulf Carbonate Rocks
| British Library Conference Proceedings | 2009
Geotechnical properties of some evaporitic rocks
| Online Contents | 1981
Geotechnical correlations for soils and rocks
| UB Braunschweig | 2018