8/11/2019 Light Drop-weight Tester

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35

164

Electronic gauge

Dimensions: 210x80x25 mm

Settlement measuring range:0.10 2.0 mm 0.02 mm

Temperature range: from 0 to 40C

Power supply:4xR6 (rechargeable) batteries

Accessories

s35-T0120/1 Transport cart

s35-T0120/2 Base plate withmagnet. Used for easy positioningof the apparatus

THE LIGHT DROPWEIGHT TESTER

qSTANDARDAs per German technical test code for soil

and rock in road construction TP BF StB

part B 8.3/1997

M 35-T0120

Light drop-weight tester

Introduction

The dynamic plate load test employingthe Light drop-weight tester is used in

earthwork and road construction to deter-mine the soil bearing capacity and thecompaction or consolidation of soils andnon-cohesive subbases, as well as for soilimprovement applications. The test methodis suited for coarse-grain and mixed-grainsoils having a maximum grain size of 63mm. The test method may be used todetermine the dynamic modulus of defor-mation of soil in the range Evd = 15 80MN/m2.

Further fields of application include:

- Road construction- Testing of pavement bedding- Quality assurance in canal construction- Compaction test in ducts and trenches- Backfill of foundations- Railway construction.

The Light drop-weight tester being easy tohandle is specifically suited for monito-ring intra-company operations.

Advantages over the plate load tester

- Time-saving immediate evaluation of

each measurement- Testing in locations not readily accessi-

ble- Low tester weight- No vehicle required for loading.

The dynamic plate load test using the Lightdrop-weight tester has been approved asan indirect test method for determiningthe degree of ramming, in:

ZTVEStB 94ZTVEStB 95ZTVEStB 97NGT 39

Function

Place the load plate on the prepared sur-face to be tested and position the loadingunit on the load plate. Connect the settle-ment meter. The drop weight is allowed todrop onto the spring element, the loadingunit produces a defined impact load andthe overall amount of compaction (orsettlement) of the soil under the load plateis measured. Once the measuring routine

is started perform three impact cycles forthe measurement. Following each cycle themeter displays the amount of settlement inmillimetres. Upon completion of a series ofmeasurements, the settlement is averaged,and the dynamic modulus of deformationis determined and displayed. Results canbe printed out on a micro-printer or on aprinter connected to a PC as necessary.

Specifications

Loading unit

Total weight: 15 kg

Drop weight: 10 kg

Max. impact force: 7.07 kN

Duration of impact: 18 ms

Spring element: cup springs

Load plate with integral

acceleration transducer

Diameter: 300 mm

Plate thickness: 20 mm

Total weight: 15 kg

35-T0120

35-T0120 with 35-T0120/1

35-T0120/2

Testing equipment for the construction industry

COMPACTED ROAD BASE AND SUBBASE SOILS

Bearing Capacity - Plate load testing. . . . . . . . . . . . . . .

Dynamic deformation module of soils