ÖBV Guideline

Determining Abrasiveness of coarse-grained soft Ground

Defined in accordance with clients, contractors and test centres, this set of guidelines provides recommendations for describing soft ground (coarse-grained soils and gravel mixtures with a maximum grain size of 31.5 mm) with regard to its abrasiveness, in particular for establishing this in a uniform manner. In this way, the determining factors of influence can be simultaneously assessed in an index test and the test results compared with each other by means of a standard procedure (for example by applying the Vienna TU abrasimeter). Other in some cases standardized methods or those to be found in reference sources are also mentioned.

The guidelines are mainly aimed at clients and geotechnical planners, as the prerequisite is created by applying this particular test technique to provide reproducible comparative values for the abrasion of the investigated soils – also for tunnelling – during the ground development phase. The abrasiveness values can then also be linked to the wear (for instance experienced by the TBM) occurring during the execution of construction as well as with other on-site values. The appendices contain details on the Vienna TU abrasimeter, examples of test reports and presentations of results for abrasiveness as well as proposals for taking abrasiveness investigations into account at the tendering stage.


Guidelines of the Austrian Society for Construction Technology (ÖBV), October 2013

32 pp., DIN A4 with 20 Ill. /Tables and 35 Sources

17.50 euros




Related articles:

Issue 06/2010 4th BASF TBM Conference in London/GB – Laboratory Tests with conditioned Soils for EPB Tunnelling

Laboratory Tests with various conditioned Soils for Tunnelling with Earth Pressure Balance Shield Machines

The main application area for earth pressure balance (EPB) shield machines is soil with at least 30 % of fines. Especially in coarse-grained material and in connection with ground-water pressure, the...

Issue 02/2024

Settlement Predictions for TBM Tunnelling in Soft Ground on the Basis of Empirical Values

1 Empirical Method for Determining the Settlement Trough Caused by Tunnelling  1.1 Geometry of Settlement Troughs Determined by Measurements The empirical method, which was originally...

Issue 06/2011

Mechanical and process-technical Characterisation of the Rock influenced by interactive Behaviour of Machine – Ground

1 Introduction In the case of TBM drives the excavated material is subject to numerous processes of change while being extracted by the cutting wheel right up to being discharged at the portal, which...

Issue 06/2013 Book Review

Austrian Guideline on Tunnel Seals

Austrian Society for Construction Technology (öbv) Guideline, December 2012. 124 pp. DIN A4 with 96 Ill./Tab. and 106 Sources. Bound € 45. www.bautechnik.pro. The requirements on the ground and...

Issue 05/2011

Innovations and Limitations of Two Long-Standing Soft Ground TBM Designs

EPB and Slurry TBMs, first developed in the 1960s and refined in the decades following, were designed around very different philosophies. Though both prototypes originated in Japan, EPBs were founded...