ijegeo

International Journal of Environment and Geoinformatics

2148-9173

Istanbul University

10.30897/ijegeo.306482

Determining Roughness Angle of Limestone Using Optical Laser Scanner

Avşar

E. Özgür

Çanakkale Onsekiz Mart University, Engineering Faculty, Department of Geomatic Engineering Bozkurtoğlu

Erkan

Istanbul Technical University, Civil Engineering Faculty, Department of Geomatic Engineering Aydar

Umut

Istanbul Technical University, Civil Engineering Faculty, Department of Geomatic Engineering Şeker

Dursun Zafer

Istanbul Technical University, Civil Engineering Faculty, Department of Geomatic Engineering Kaya

Şinasi

Istanbul Technical University, Civil Engineering Faculty, Department of Geomatic Engineering Gazioğlu

Cem

Istanbul University, Institute of Marine Sciences and Management, Department of Marine Environment

12 30 2016

3 3 57 75 04 15 2017 12 01 2016

2014

International Journal of Environment and Geoinformatics

In this study, a limestone rock core specimen with 6.94 cm x 4.95 cm dimensions was exposed to tensile forceby Brazilian test and rough surfaces were obtained. Following the Brazilian test, roughness angles weremeasured by a laser scanner along one side of the rock specimen. For this purpose, Nextengine 3D Desktopscanner was used. The 17 profiles were studied along the width of the core with a 0.3 mm interval.Approximately 10000 points produced for each profile, some of them are in the “+” and some are in the “-”direction along each profile. Maximum and minimum roughness angles are calculated as 65.580 and 1.56x10-5degree respectively. The average roughness angle value of the profiles is 13.870. The percentage of theroughness angle between 13 and 14 degrees were 2.65% and 2.70% for “-” and “+” directions on the rocksurface, respectively. Mathematical analyses of 17 profiles showed that roughness profiles can be expressed by21st – 30th degree polynomial equations with approximately 10-4 degree standard deviation.

Roughness angle limestone image processing

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