Prediction of mechanical properties of non-welded and moderately welded ignimbrite using physical properties, ultrasonic pulse velocity, and point load index tests
QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY, cilt.42, ss.107-122, 2009 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 42
- Basım Tarihi: 2009
- Doi Numarası: 10.1144/1470-9326/07-067
- Dergi Adı: QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.107-122
- Hacettepe Üniversitesi Adresli: Evet
Özet
Nine moderately welded and non-welded ignimbrite types having commercial value and used in historical structures were tested to estimate their mechanical properties by index tests. Physico-mechanical properties of 264 rock cores, including apparent porosity, water absorption by weight, unit weight, ultrasonic velocity, point load index, compressive strength and modulus of elasticity were determined. These properties were used in statistical evaluations, as input parameters in multiple regressions and artificial neural network analyses. Several combinations of physical and mechanical properties were used to determine the best estimates. As a result, new equations were determined to estimate mechanical properties of non-welded and moderately welded ignimbrite using index tests; also, a new chart using index properties was developed to estimate elastic moduli of ignimbrite.