Report 306 Laboratory trial mixes for lime-stabilised soil columns and lime piles

Publication Year

1997

Document Status

Current

Abstract

Trial mixes in the laboratory of a combination of clay and lime, clay and lime with cement and only lime were tested for strength to determine the suitability of use for lime-stabilised soil columns and lime piles in forthcoming field trials. The trials used Gault Clay and London Clay in mixes of 5, 10 and 15% lime, and 5% lime with 5 and 10% cement. Another test was conducted on quicklime. The results revealed all uses of binder increased the strength of soils, however the mixes with lime additions were not strong enough for lime-stabilised soil columns. London Clay and the combination of 5% lime plus 5% cement did reach a suitable strength for this purpose. Results from the use of compacted quicklime revealed they were high enough for use in improving the stability of slopes in both lined and unlined piles with the exception of unlined lime piles used in sand. The strength of this combination was too low and its ability to harden in all circumstances was questionable. There are advantages in using waterwell screen pipes for lining lime piles, especially pre-fabricated lime piles made from sections of waterwell screen pipes that have been pre-packed with quicklime. Recommendations are given for the forthcoming field trials.

Author

Brookes, A. H., West, G. and Carder, D. R.

ISBN

9780727729255

Publisher Information