caa a22 4500 605454787 CHVBK 20210128100209.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10064-014-0629-1 doi (NATIONALLICENCE)springer-10.1007/s10064-014-0629-1 Estimation of strength characteristics of different Himalayan rocks from Schmidt hammer rebound, point load index, and compressional wave velocity [Elektronische Daten] [Ruchika Tandon, Vikram Gupta] Various rock types—including highly deformed to undeformed quartzites, granites, granitic gneisses, gneisses, metabasics (meta-amphibolites and meta-dolerite), and dolomites—collected from different formations of the Lesser and Higher Himalayas were tested to evaluate correlations between the uniaxial compressive strength (UCS) and the point load test (PLI), Schmidt hammer rebound (SHR) value, and compressional wave velocity (Vp). Various equations between UCS and PLI, SHR, and Vp were obtained using regression analysis. It was found that there is high scatter in the data when all lithologies are considered together, whereas this scatter is reduced when the lithologies are considered individually. This was attributed to wide variations in the mineralogical and textural characteristics of different rocks. Furthermore, it was also noted that quartzites exhibit high scatter in their data points, even though they are monomineralic. Thin section studies revealed that different microfabrics have been produced in the quartzites, due to the actions of different deformational phases during tectonic activity in the area. Therefore, it is necessary to treat deformed and undeformed rocks separately when deriving such equations. Springer-Verlag Berlin Heidelberg, 2014 Uniaxial compressive strength (UCS) nationallicence Point load test nationallicence Schmidt hammer rebound (SHR) value nationallicence Compressional wave velocity nationallicence Microfabric nationallicence Tandon Ruchika National Geotechnical Facility, 11/C Circular Road, Poonch House, 248001, Dehradun, Uttarakhand, India aut Gupta Vikram National Geotechnical Facility, 11/C Circular Road, Poonch House, 248001, Dehradun, Uttarakhand, India aut Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/2(2015-05-01), 521-533 1435-9529 74:2<521 2015 74 10064 https://doi.org/10.1007/s10064-014-0629-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10064-014-0629-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tandon Ruchika National Geotechnical Facility, 11/C Circular Road, Poonch House, 248001, Dehradun, Uttarakhand, India aut NATIONALLICENCE 700 1- Gupta Vikram National Geotechnical Facility, 11/C Circular Road, Poonch House, 248001, Dehradun, Uttarakhand, India aut NATIONALLICENCE 773 0- Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/2(2015-05-01), 521-533 1435-9529 74:2<521 2015 74 10064