Mapping surface vesicles of a cylindrical basalt specimen using laser scanning

Nick Hudyma, Ramakrishna Bathini, Alan Harris, Mary M. Maclaughlin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationGeoCongress 2012
Subtitle of host publicationState of the Art and Practice in Geotechnical Engineering
Pages3011-3020
Number of pages10
Edition225 GSP
DOIs
StatePublished - 2012
EventGeoCongress 2012: State of the Art and Practice in Geotechnical Engineering - Oakland, CA, United States
Duration: 25 Mar 201229 Mar 2012

Publication series

NameGeotechnical Special Publication
Number225 GSP
ISSN (Print)0895-0563

Conference

ConferenceGeoCongress 2012: State of the Art and Practice in Geotechnical Engineering
Country/TerritoryUnited States
CityOakland, CA
Period25/03/1229/03/12

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