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Los Angeles Test of aggregate material evaluated with image analysis
The aim is to study the physical composition of the till and see if and how there is a couple to bedrock properties. The project studies till from all different aspects. Two test areas associated with rock quarries have been studied in detail, one at Olunda near Uppsala, and one at Bäckseda near Vetlanda. Several geophysical tests have been made over a test area of till at each site. This includes georadar, resistivity, magnetic susceptibility, VLF and seismic. The total size distribution and lithological composition of the clasts has been studied at each site, from either sections or sample pits. The size distribution and the composition of the clasts are determined.
The aim of the master’s project is to determine the Los Angeles Value for the particles for the till and the local bedrock from these two sites and to use image analysis to study how the particles are changed due to the test. The Los Angeles test is a typical test done on aggregate material to determine aggregate quality for usage in engineering, i.e. suitable as railroad aggregates or aggregates in asphalt etc. Instead of the normal procedure for the Los Angeles test image analysis will be used to evaluate the size, shape and surface texture of the particles both prior and subsequent to the Los Angeles test. Thus it is possible to determine how particles change in size, shape and surface texture due to the impact of the steel balls in 1000 revolutions in the Los Angeles Drum.
The project is suitable for a civil engineering student. No direct expertise is required in geology or image analysis.
The advisor of the project is Docent Joanne Fernlund. You will also work in close cooperation with other master students working on associated projects and well as doctorate student Mimmi Arvidsson.
Informationen om uppsatsförslag är hämtad från Nationella Exjobb-poolen.