TY - GEN
T1 - Investigation of the variability of engineering properties (Stiffness and unconfined compressive strength) of hydrocal and polylite
AU - Morrison, Sara
AU - MacLaughlin, Mary
AU - Hudyma, Nick
AU - Parkhurst, Jesse
PY - 2008
Y1 - 2008
N2 - Based on previous research investigating the influence of large voids, plaster of Paris displays variable engineering properties (Erfourth 2006). The objective of this study was to find a matrix material with consistent unconfined compressive strength and stiffness. Two-inch by four-inch solid cylindrical specimens were made with Polylite (a transparent plastic material) and Hydrocal (a high quality plaster) as the matrix material. After testing 20 Polylite and 75 Hydrocal specimens, it was found that these materials displayed lower coefficients of variation (10% or less for Hydrocal, 3% or less for Polylite) as compared to pre-existing data for solid specimens with original plaster matrix (as much as 15%). Unfortunately it was also found that introducing voids into the Polylite samples results in violent failures during testing. Therefore, it is not a viable candidate for future use in this project.
AB - Based on previous research investigating the influence of large voids, plaster of Paris displays variable engineering properties (Erfourth 2006). The objective of this study was to find a matrix material with consistent unconfined compressive strength and stiffness. Two-inch by four-inch solid cylindrical specimens were made with Polylite (a transparent plastic material) and Hydrocal (a high quality plaster) as the matrix material. After testing 20 Polylite and 75 Hydrocal specimens, it was found that these materials displayed lower coefficients of variation (10% or less for Hydrocal, 3% or less for Polylite) as compared to pre-existing data for solid specimens with original plaster matrix (as much as 15%). Unfortunately it was also found that introducing voids into the Polylite samples results in violent failures during testing. Therefore, it is not a viable candidate for future use in this project.
UR - http://www.scopus.com/inward/record.url?scp=84870924556&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84870924556
SN - 9781622762514
T3 - 41st Symposium on Engineering Geology and Geotechnical Engineering 2008
SP - 29
EP - 36
BT - 41st Symposium on Engineering Geology and Geotechnical Engineering 2008
T2 - 41st Symposium on Engineering Geology and Geotechnical Engineering 2008
Y2 - 9 April 2008 through 11 April 2008
ER -