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Mindaugas Klimašauskas
, Valentinas Šaulys
The effect of lime admixture to trench backfill on the functioning of
drainage
| Conference Information: |
9th International Conference on Environmental
Engineering, MAY 22-24, 2014 Vilnius, LITHUANIA |
| Source: |
ICEE-2014 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
ISSN 2029-7092 online |
| ISBN: |
978-609-457-640-9 / 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
The study examines the effect of lime admixture to trench backfill on the functioning of tile drainage after almost 25 years of operation.
The hydrosystems’ efficiency examination was performed at the test site in Kalnujai, Raseiniai District, where filtering capacity of
drainage trench backfill had been improved by lime admixture. When analysing the maximum drainage discharge per unit length at the
control drainage systems as of spring and autumn of 2012 (0.250 and 0.288 ml/s m respectively), as well as the drainage discharge per
unit length as of spring and autumn (0.297 and 0.392 ml/s m respectively) in the drainage, where the trench backfill filtering capacity had
been improved with lime admixture (0.6 % of the soil mass), correspondingly 15.2-31.9 % better results were obtained. When evaluating
the drainage systems efficiency indicators as of 2003 and 2012 with the 95 % reliability, it can be stated that the efficiency of drainage,
where the filtering capacity has been improved with lime admixtures, remained virtually unchanged after almost 25 years of operation.
Keywords: drainage; trench backfill liming; drainage discharge.
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