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Abstract
Heavy tamping compaction method in cohesionless alluvial soil was evaluated with CPTU and DMT tests. Some examples of interpretation of soundings in pre-treated and compacted sands are given. The compaction work was performed in two stages. Compaction control was performed after each stage of tamping. Additional tests were performed two weeks after the compaction works completion to study the set-up effect. While typical increase of cone resistance and sleeve friction in time was observed for CPTU tests, more complex phenomena was noted for DMT tests. If lateral stress index and dilatometer modulus increase with time, a decrease of material index of the compacted soil was observed. The effect of densification and set-up was analysed for angle of internal friction and Md /qc ratio. Changes in the soil classification induced by set-up are also considered. For a given relative density the lateral stress index was insensitive to compaction just after the work completion. Net increase of Kd in time was however recorded.
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- Category:
- Conference activity
- Type:
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Title of issue:
- Third International Conference on the flat dilatometer DMT'15 strony 191 - 196
- Language:
- English
- Publication year:
- 2015
- Bibliographic description:
- Kurek N., Bałachowski L.: CPTU/DMT control of heavy tamping compaction of sands// Third International Conference on the flat dilatometer DMT'15/ ed. Silvano Marchetti, Paola Monaco, Viana da Fonseca Rzym: , 2015, s.191-196
- Verified by:
- Gdańsk University of Technology
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