Study on the Effect of [Al₁₃]⁷⁺ over the Free Swelling Ratio of Expansive Soil

Abstract:

The hydroxy-aluminum solution is prepared by alkali neutralization titration and the subsequent cross-linking tests are designed by mixing the hydroxy-aluminum solution and expansive soil, followed by the discussion on the influence of the molar ratio of OH^- to Al³⁺ and ratio of total aluminum to expansive soil on the swelling behavior of the cross-linked soil. The free swelling ratio of the cross-linked soil decreased significantly, indicating that the main aluminum species that changes the expansion properties of the cross-linked soil is [Al₁₃]⁷⁺.

• Periodical: Key Engineering Materials (Volume 748)
• Pages: 341-345
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.748.341
• Online since: August 2017
• Authors: Liang Liu*, Hai Lin Yao, Zheng Lu, Zhong Wen Yin, Xing Wen Luo, Ran Fang
• Keywords: Al/Soil Ratio, Expansive Soil, Hydroxy-Aluminum, OH/Al Molar Ratio, Swelling Behavior

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