Abstract
The paper reports on a study of the weak sandstones of the Shihti and Kweichulin Formations to the east of Taipei, Taiwan. The results indicate that the wave velocity and uniaxial compressive strength (UCS) of the samples decreased as water content increased, while wave velocity, UCS and slake durability increased with increasing porosity. Regression analyses demonstrated that wave velocity, UCS and slake durability decreased with increased quartz content. The values of these engineering properties also increased with a higher proportion of matrix/detritus, although the exact nature of the interrelationships between these factors is not clear.
Résumé
L’article présente une étude de grès tendres des formations de Shihti et Kweichulin à l’est de Taipeh (Taiwan). Les résultats indiquent que la vitesse du son et la résistance à la compression simple des échantillons diminuent quand la teneur en eau augmente et que la résistance à la compression simple et l’indice d’altérabilité augmentent quand la porosité augmente. Les analyses de régression ont montré que la vitesse du son, la résistance à la compression simple et l’indice d’altérabilité diminuent lorsque la teneur en quartz augmente. Par ailleurs, les valeurs de ces paramètres augmentent lorsque le rapport matrice/éléments détritiques augmente, bien que l’explication de cette relation ne soit pas claire.
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Acknowledgements
The authors extend their thanks to Prof. L.A. Lee, Institute of Statistic Analysis, Academy Sinica, and Prof. T.H. Huang, Department of Civil Engineering, National Taiwan University, Prof. C.L. Pan, Ministry of Economic Affairs, Dr. H.C. Lee, Department of Civil Engineering, Chungyun University, Dr. C.C. Chen, Sinotech Engineering Consultants, and Dr. Del Dobyns, Ming Chuan College, for their constructive comments. This study was supported by the National Science Council, China (NSC 86-2116-M-002-016).
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Chen, H., Hu, ZY. Some factors affecting the uniaxial strength of weak sandstones. Bull Eng Geol Environ 62, 323–332 (2003). https://doi.org/10.1007/s10064-003-0207-4
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DOI: https://doi.org/10.1007/s10064-003-0207-4