caa a22 4500 465808697 CHVBK 20180323112110.0 cr unu---uuuuu 170327e19900401xx s 000 0 eng 10.1007/BF02590210 doi (NATIONALLICENCE)springer-10.1007/BF02590210 Strength classification of some nigerian limestones using the point load testing technique [Elektronische Daten] [A. Edet, S. Teme] Classification de quelques calcaires du nigéria à partir de l'essai de résistance au fendage sous charge ponctuelle The point load testing machine has been used to establish certain strength relationships obtained from the results of tests carried out on irregular lump specimens of some Nigerian limestones. The parameters used in the derivations of the relationships include the point load strength index (Is), shape factor (L/D), specimen thickness and the reduction ratio. The methods of rock classification by Deere and Miller and that proposed by Turk and Dearman have been slightly modified for the purpose of rock classification in the field. Based on the intact strength and Rock Mass Rating, the rock mass quality of some limestones from Southern Nigeria have been estimated. International Association of Engineering Geology, 1990 Edet A. Department of Geology, University of Calabar, Calabar, Nigeria aut Teme S. Institute of Flood, Erosion, Reclamation and Transportation, Rivers State University of Science and Technology, Nkpolu, PMB 5080, Port Harcourt, Nigéria aut Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur Springer-Verlag 41/1(1990-04-01), 97-106 0074-1612 41:1<97 1990 41 10064 https://doi.org/10.1007/BF02590210 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02590210 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Edet A. Department of Geology, University of Calabar, Calabar, Nigeria aut NATIONALLICENCE 700 1- Teme S. Institute of Flood, Erosion, Reclamation and Transportation, Rivers State University of Science and Technology, Nkpolu, PMB 5080, Port Harcourt, Nigéria aut NATIONALLICENCE 773 0- Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur Springer-Verlag 41/1(1990-04-01), 97-106 0074-1612 41:1<97 1990 41 10064 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer