TY - GEN
T1 - Mapping surface vesicles of a cylindrical basalt specimen using laser scanning
AU - Hudyma, Nick
AU - Bathini, Ramakrishna
AU - Harris, Alan
AU - Maclaughlin, Mary M.
PY - 2012
Y1 - 2012
N2 - The size, distribution, and location of vesicles on the surface of vesicular basalt specimens will influence their mechanical properties. Laboratory based laser scanning was used to map and quantify the surface macroporosity. The laser scanning was performed at four different scan densities. The true three dimensional point cloud was transformed to a 2.5 dimensional point cloud and plotted as a contour plot to determine the surface macroporosity. The surface macroporosity was computed using a planar area calculation with the specimen surface as the cut-off plane. Low scan density produced the lowest surface macroporosity whereas the highest scan density produced the highest surface macroporosity. At high scan densities, groups of individual macropores coalesced to form larger macropores when a constant specimen surface was used as a cut-off plane. The results show a more robust and quantifiable means of determining macroporosity must be developed to accurately characterize surface macropores.
AB - The size, distribution, and location of vesicles on the surface of vesicular basalt specimens will influence their mechanical properties. Laboratory based laser scanning was used to map and quantify the surface macroporosity. The laser scanning was performed at four different scan densities. The true three dimensional point cloud was transformed to a 2.5 dimensional point cloud and plotted as a contour plot to determine the surface macroporosity. The surface macroporosity was computed using a planar area calculation with the specimen surface as the cut-off plane. Low scan density produced the lowest surface macroporosity whereas the highest scan density produced the highest surface macroporosity. At high scan densities, groups of individual macropores coalesced to form larger macropores when a constant specimen surface was used as a cut-off plane. The results show a more robust and quantifiable means of determining macroporosity must be developed to accurately characterize surface macropores.
UR - http://www.scopus.com/inward/record.url?scp=84888390814&partnerID=8YFLogxK
U2 - 10.1061/9780784412121.308
DO - 10.1061/9780784412121.308
M3 - Conference contribution
AN - SCOPUS:84888390814
SN - 9780784412121
T3 - Geotechnical Special Publication
SP - 3011
EP - 3020
BT - GeoCongress 2012
T2 - GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering
Y2 - 25 March 2012 through 29 March 2012
ER -