Measuring and testing – Hardness – By penetrator or indentor
Patent
1982-04-08
1984-07-10
Ciarlante, Anthony V.
Measuring and testing
Hardness
By penetrator or indentor
G01N 300
Patent
active
044585250
ABSTRACT:
A method of insitu testing of soil compressibility comprises boring a hole in the soil to be tested, reconstituting the lateral stress environment in the soil adjacent the bottom of the borehole and then performing vertical compression tests directly on the undisturbed material at the bottom of the borehole. The testing apparatus of the invention includes a cylindrical container adapted to be pushed to the bottom of the borehole. An inflatable circumferential membrane around the exterior periphery of the container is inflated to reconstitute the lateral stress environment. The load may be applied to the base of the borehole by either a closed or inflatable fluid cell or directly by a flat or stepped load plate.
In one embodiment of the invention, a thin-walled cylindrical tube penetrates the soil at the base of the borehole so as to laterally support the test soil for substantially one-dimensional vertical compression testing.
REFERENCES:
patent: 3481188 (1969-12-01), Mori
patent: 4353247 (1982-10-01), DeDomenico
Handy Richard L.
Lutenegger Alan J.
Ciarlante Anthony V.
Iowa State University & Research Foundation, Inc.
LandOfFree
Borehole plate test does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Borehole plate test, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Borehole plate test will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1570832