for determine the Compaction-rate of granular course and soils
The problem the inventor(s) wanted to solve
the Compaction-rate by light-falling weight deflectometer, measuring the
settlement amplitudes, registrateable the compaction curve of granular
material course. We determine the Compaction-rate and the dynamic modulus from
this deflection curve gained in situ test. The calculated dynamic compaction
rate the same, as the isotopic one.
do the compaction of granular course closely to
the Proctor-test’s work used inside the laboratory,
with a small-disk
light-falling weight deflectometer, diameter 163mm. From the compaction curve
one can determine the dynamic modulus and the dynamic compaction rate
in one test.
apparatus determines the compaction-rate and the bearing capacity (dynamic
modulus) in one procedure. The portable easy and small equipment useable
in-site investigation for quality control of soils, base courses, railways and
road constructions, earthworks, bridge-background layers even the
unapproachabble places. The microprocessor integrated apparatus helps to carry
out the tests, 50 measures can store in its memory, maybe print in site or
upload the results on PC with RS232 connection. To measuring of deflection
applies ADXL 150 type accelerometer fabricated by Texas Instruments USA,
sharpness within 0,1%.
control of earthworks, granular base courses, soils, embankments, backgrounds
under and after building constructions
the same results, so it can replace the radiometric compaction measurement and
method, which has well known heavy environment and healthy effects, and costs.
Do not needs radiometric source, isotopic store, special car, permission for
radiometry material and medical attandance of the stuffs. This is the only way,
to determine the bearing capacity (dynamic modulus) and the dynamic compaction
rate by one test.
The easy, small portable equipment suitable
to make the quality control test on bridge- backgrounds, in pit holes, heavy-
or unapproachabble places. The sharpness of this dynamic compaction rate is
+/-2,0 Trr%, which is much better than isotopic one. Ideal apparatus for
quality control, under and after construction process. The uncompacted
layers, places could be determined easily and quickly. Advanced quality
control tester for all earthworks, building embankments and backgrounds.
Stage of development.
innovation, Hungarian manufacturer: FRYTECH Ltd. Fabricating capacity in
hungary 50 p/y. References: army, quality controlers, laboratories,
Civil Engineer, Dipl. Transport Economic Engineer, Expert of road pavement
structures, Expert of soil mechanics and drainage, Expert of road operation &
maintenance, Expert of road quality control & qualifying. 1970-1980 Mining
Research Institute, 1980-1990 Institute for Transport Sciences, research
engineer, 1990-1997 RODCONT Engineering Ltd. director, 1997-2003 ANDREAS
Engineering Ltd. director, 1998- MixCONTROL Engineering Ltd. director. Years
50, publications 36, patent & know-how 23. Married, children 4.
Owner of the invention?