Humboldt 5000 BLU Light Weight Deflectometer - Manual (Page 93)

93
Extract from Austrian standard RVS 08.03.04 – Compaction Tests by means of the Dynamic Plate Load Test;
Issue 1st March 2008; Austrian Association for Research on Road · Rail · Transport
8.1 Conversion of Minimum Requirements
A minimum requirement for the deformation modulus Ev1 of the static plate load test can also be
checked with the dynamic plate load test. The conversion of minimum requirements for the deformation
modulus of the static plate load test (E
v1
) to those for the dynamic deflection module of the dynamic plate
load test (E
vd
) is carried out with the following formula for non-cohesive soils:
for E
v1
≥ 25 MN/m
2 applies: E
vd
= 10 + 4–
5
E
v1
for E
v1
< 25 MN/m 2 applies: E
vd
= 6–
5
E
v1
and for cohesive soils with the formula:
E
vd
= 10 + 4–
5
E
v1
Chart 1 presents the relation.
Note:
Chart 1 helps you to convert requirements (limit values); however it should not be used to convert the test
values (E
vd
-E
v1
). The influence of the dynamic excess pore water pressure, which occurs with cohesive soils,
the dispersion due to the high number of tests as well as the deviations caused by various tests under high
rigidity have been considered during the creation of the chart.
Chart 1: Conversion of the Minimum Requirements from E
v1
to E
vd
11.3 RVS 08.03.04 RVS 08.03.04 Austrian Association for Research on Road · Rail · Transport
Static Plate Dynamic Plate
Load Test Load Test
E
v1
E
vd
Deformation Dynamic Deflection Module
Modulus E
v1
E
vd
[MN/m 2 ]
[MN/m 2 ] non-cohesive cohesive
0 0 10
5 6 14
7,5 9 16
10 12 18
15 18 22
20 24 26
25 30 30
30 34
35 38
40 42
45 46
50 50
55 54
60 58
65 62
70 66
75 70
80 74
85 78
90 82
The current calibration
chart of the LWD in
use must be carried
along with the device.
The test value Evd,
which corresponds to
the minimum
requirement Ev1, may
be found in this
calibration chart and
must be verified.
The test must be performed and evaluated according to Austrian standard RVS 08.03.04.
For general information only! All details are subject to change.