Engineering properties of loess stabilized by a type of eco-material, calcium lignosulfonate
The chemical stabilization, an important method to stabilize soil foundations, can consolidate the soil particles and raise the strength by chemical reactions. Calcium lignosulfonate, a type of eco-material, was used for loess improvement. Based on numerous experimental results, the engineering prop...
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Published in | Arabian journal of geosciences Vol. 12; no. 22; pp. 1 - 10 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
01.11.2019
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | The chemical stabilization, an important method to stabilize soil foundations, can consolidate the soil particles and raise the strength by chemical reactions. Calcium lignosulfonate, a type of eco-material, was used for loess improvement. Based on numerous experimental results, the engineering properties of stabilized loess such as Atterberg limits, uniaxial compression strength, internal damage, and physical phases were investigated to verify its stabilization effect and reveal its strengthening mechanisms, compared with the traditional stabilizers (NaOH and Na
2
O·nSiO
2
). The results show that calcium lignosulfonate can increase the Atterberg limits and compressive strength and decrease the energy dissipation due to reduction in spacing of mineral crystal plane and thickness of electric double layer of particle, increase in compactness of structure, and increase in silica and carbonate cementations by the hydrolysis and chemical reactions with clay minerals in loess. The strength of the treated loess specimen increases with the growing content of calcium lignosulfonate. The results also prove that calcium lignosulfonate is a new eco-friendly stabilizer which would deserve further application in loess engineering. |
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ISSN: | 1866-7511 1866-7538 |
DOI: | 10.1007/s12517-019-4876-0 |