Stabilization of sludge from earth pressure balance for use in earth embankments

D. Castro-Fresno; J.J. del Coz Díaz; P. Menéndez Rodríguez; D. García Espinel

doi:10.1016/j.clay.2011.04.019

Stabilization of sludge from earth pressure balance for use in earth embankments

D. Castro-Fresno, J.J. del Coz Díaz, P. Menéndez Rodríguez, D. García Espinel

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The increasing use of earth pressure balance in tunnel excavations has created a challenge for constructors, namely, the handling of excavation sludge. This is an important environmental problem, and it must be solved in an efficient, economical and innovative way. This study presents a new technique for in-situ treatment of the waste by mixing it with lime. To predict the material behavior before the process, the chemical composition, morphology and texture of three samples of sludge from excavation works in a tunnel were analyzed. A quick and economical testing procedure was developed, based on the measurement of the electrical conductivity in typical mixtures. The control parameters of the in-situ treatment process were optimized to obtain enhanced soil as a final product.

Original language	English
Pages (from-to)	533-537
Number of pages	5
Journal	Applied Clay Science
Volume	53
Issue number	4
Early online date	31 May 2011
DOIs	https://doi.org/10.1016/j.clay.2011.04.019
Publication status	Published - Oct 2011
Externally published	Yes

Keywords

EPB
Sludge management
Pozzolanic reaction
Conductivity tests
Soil fabrication

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10.1016/j.clay.2011.04.019

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abstract = "The increasing use of earth pressure balance in tunnel excavations has created a challenge for constructors, namely, the handling of excavation sludge. This is an important environmental problem, and it must be solved in an efficient, economical and innovative way. This study presents a new technique for in-situ treatment of the waste by mixing it with lime. To predict the material behavior before the process, the chemical composition, morphology and texture of three samples of sludge from excavation works in a tunnel were analyzed. A quick and economical testing procedure was developed, based on the measurement of the electrical conductivity in typical mixtures. The control parameters of the in-situ treatment process were optimized to obtain enhanced soil as a final product.",

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AU - Castro-Fresno, D.

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AU - García Espinel, D.

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Stabilization of sludge from earth pressure balance for use in earth embankments

Abstract

Keywords

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