Rock Mechanics & Explosives Research Center
Rolla, MO 65409
The Rock Mechanics & Explosives Research Center (RMERC), founded in 1964, provides research leadership in a broad range of scientific and engineering fields with emphasis on activities centered on or related to the mineral resource lease.
The Center serves the mining and petroleum industries, the nuclear industry, geological science and engineering and the related wider industrial manufacturing community.
A particular emphasis is to foster innovative and responsive research in rock physics and all fields of science and engineering that deal with rock, including energy production, mining, geology, geophysics, nuclear and related fields.
Our current research is focused on three areas:
Digital Art Show in Leach Theatre Lobby - featuring art of Dr. David Summers, the RMERC former Director.
3:30 - 4:30 p.m. Rock Mechanics Facility 1006 Kingshighway
19 September 2014 --
Author: Mr. Dennis Chieze Duru
Title: Effects of Grain Properties and Compaction on Single-Tool Normal Indentation of Granular Materials
The behaviors of three granular materials; filter sand, crushed garnet, and shale cutting, were investigated in an effort to evaluate the effect of grain size and shape, and material compaction under single tool load-indentation test. Force-penetration data was collected continuously through the end of each test and specific energy and specific penetration was calculated from the data. Specific energy SE (energy required to indent a unit volume of the material) and Specific penetration SP (maximum force required to indent the material a given depth) were computed from the force-penetration curve. SE correlated with grain size and Aspect ratio for uncompacted materials and correlated with grain size and bulk density for the compacted materials. SP correlated with grain size and aspect ratio of the uncompacted sample and correlated with grain size, bulk density and solid density when the compacted data was introduced. This indicates that for uncompacted materials, grain size and aspect ratio are the dominant variable affecting SP and SE. However, when compaction is introduced, grain size and bulk density become dominant.
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