Experimental Investigation of Remolded Loess Mixed with Different Concentrations of Hydrochloric Acid
Publication: Journal of Materials in Civil Engineering
Volume 34, Issue 1
Abstract
The vibratory probe compaction method may sometimes fail to proceed smoothly due to the hard layer encountered during treatment of collapsible loess foundation. To this end, high-pressure water jetting around the traveling drill bit was used to soften the soil layer to assist the vibratory probe in sinking. However, due to the shortage of water resources in northwest China, a measure to reduce water consumption and add hydrochloric acid solution was adopted. To clarify the effect of the hydrochloric acid solution on the engineering characteristics of loess, this study conducted a series of geotechnical tests on remolded loess samples mixed with different concentrations of hydrochloric acid solution at the same dry density. The test results showed the pH values of all the sample leachates ranged from 7.83 to 7.64, and they had little effect on the surrounding environment. The coagula generated from the reaction between the acid solution with the original cementing material inside the loess enhanced the cementation between the soil particles and filled the gaps between the particles. The formation of this new structure gave the sample a strong ability to resist collapsing deformation, which was reflected in the acid-added sample having a smaller collapse coefficient than the water-added sample after the last stage of the collapsibility test. However, because the maximum dry density of the mixture increased with the increase of the acid concentration, the degree of compaction of the acid-added sample at the same dry density was insufficient, resulting in considerably bigger and more macro pores than that of water-added sample. It further caused the strength and disintegration characteristics of the sample to deteriorate with the increase of the acid concentration. The application of acid-added loess as a compacted filler is feasible for the construction of the vibratory probe compaction method in the loess area, which provides a new method for the treatment of collapsible loess foundation.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study is funded by the National Natural Science Foundation of China (No. 41977241) and the Scientific Research Foundation of Graduate School of Southeast University (No.YBPY1981). Acknowledgment is also given to Jiangsu Shengtai Construction Engineering Co. Ltd. and China Railway Fifth Survey And Design Institute Group Co. Ltd.
References
Bai, X. H. 2007. “Engineering properties and improvement of some special soil.” Supplement, Eng. Mech. 24 (S2): 83–98.
Du, G. Y., C. H. Gao, S. Y. Liu, Q. Guo, and T. Luo. 2019. “Evaluation method for the liquefaction potential using the standard penetration test value based on the CPTU soil behavior type index.” Adv. Civ. Eng. 2019 (1): 1–8. https://doi.org/10.1155/2019/5612857.
Feng, S. J., F. L. Du, Z. M. Shi, W. H. Shui, and K. Tan. 2015. “Field study on the reinforcement of collapsible loess using dynamic compaction.” Eng. Geol. 185 (Feb): 105–115. https://doi.org/10.1016/j.enggeo.2014.12.006.
Feng, S. J., Z. M. Shi, Y. Shen, and L. C. Li. 2014. “Elimination of loess collapsibility with application to construction and demolition waste during dynamic compaction.” Environ. Earth Sci. 73 (9): 5317–5332. https://doi.org/10.1007/s12665-014-3783-7.
Gao, C. H., G. Y. Du, S. Y. Liu, D. W. Zhang, K. Zhang, and B. Zeng. 2020. “Field study on the treatment of collapsible loess using vibratory probe compaction method.” Eng. Geol. 274 (Sep): 105715. https://doi.org/10.1016/j.enggeo.2020.105715.
Gao, G. R. 1996. “The distribution and geotechnical properties of loess soils, lateritic soils and clayey soils in China.” Eng. Geol. 42 (1): 95–104. https://doi.org/10.1016/0013-7952(95)00056-9.
Gao, G. R., and G. Y. Gao. 1980. “Microstructures of loess soils in China.” Chin. Sci. Bull. 25 (7): 597–601.
Gao, H. J. 2014. “Analysis of influencing factors on soil particle proportion test.” Railway Invest. Surv. 1 (3): 76–78.
Hu, Z. Q., Y. Zhang, W. Q. Yue, Z. Y. Song, T. Xue, and X. N. He. 2017. “Collapsible tests of loess under acid conditions and related sensitivity analysis.” Chin. J. Rock Mech. Eng. 36 (7): 1748–1756.
Jin, C. S., and Q. S. Liu. 2011. “Remagnetization mechanism and a new age model for L9 in Chinese loess.” Phys. Earth Planet. Inter. 187 (3–4): 261–275. https://doi.org/10.1016/j.pepi.2011.03.010.
Li, G., X. Hou, Y. H. Mu, W. Ma, F. Wang, Y. Zhou, and Y. Mao. 2019a. “Engineering properties of loess stabilized by a type of eco-material, calcium lignosulfonate.” Arabian J. Geosci. 12 (22): 1–10. https://doi.org/10.1007/s12517-019-4876-0.
Li, H. J., S. Y. Liu, L. Y. Tong, and X. C. Xu. 2018. “Investigating the resonance compaction effect on laterally loaded piles in layered soil.” Eng. Geol. 246 (Nov): 1–11. https://doi.org/10.1016/j.enggeo.2018.09.019.
Li, N., J. J. Sun, Q. Wang, X. M. Zhong, M. J. Feng, and P. Guo. 2017. “Progress review and perspective problems on loess foundation reinforcement by means of modification treatment.” Adv. Earth Sci. 32 (2): 209–219.
Li, X. A., L. Wang, Y. L. Yan, H. Bo, and L. C. Li. 2019b. “Experimental study on the disintegration of loess in the loess plateau of China.” Bull. Eng. Geol. Environ. 78 (7): 4907–4918. https://doi.org/10.1007/s10064-018-01434-6.
Liu, S. Y., and Y. Cheng. 2012. “Resonance compaction method for highway ground improvement at liquefaction site.” China J. Highway Transp. 25 (6): 24–29.
Liu, S. Y., G. Y. Du, Z. L. Mao, C. H. Gao, B. Zeng, Y. Yang, and D. W. Zhang. 2020. “A field study on the improvement of collapsible loess by vibratory probe compaction method.” Chin. J. Geotech. Eng. 42 (8): 1377–1383.
Liu, Z., F. Y. Liu, F. L. Ma, M. Wang, X. H. Bai, Y. L. Zheng, and G. P. Zhang. 2016. “Collapsibility, composition, and microstructure of loess in China.” Can. Geotech. J. 53 (4): 673–686. https://doi.org/10.1139/cgj-2015-0285.
Massarsch, K. R. 2019. “Deep soil compaction using vibratory probes.” In Deep foundation improvements: Design, construction and testing, edited by R. C. Bachus and M. I. Esrig, 297–319. Baltimore MD: ASTM.
Massarsch, K. R., and B. H. Fellenius. 2017. “Evaluation of resonance compaction of sand fills based on cone penetration tests.” Proc. Inst. Civ. Eng. 170 (3): 149–158.
Massarsch, K. R., C. Wersäll, and B. H. Fellenius. 2019. “Liquefaction induced by deep vertical vibratory compaction.” Proc. Inst. Civ. Eng. Ground Improv. 1–12. https://doi.org/10.1680/jgrim.19.00018.
Mihalache, C., and G. Buscarnera. 2017. “Is wetting collapse an unstable compaction process?” J. Geotech. Geoenviron. 141 (2): 04014098. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001226.
Monire, M., Z. M. Reza, and K. Afshin. 2019. “Stress–strain behavior of loess soil stabilized with cement, zeolite, and recycled polyester fiber.” J. Mater. Civ. Eng. 31 (12): 04019291. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002952.
Peng, J. B., P. Sun, O. Igwe, and X. A. Li. 2018. “Loess caves, a special kind of geo-hazard on loess plateau, northwestern China.” Eng. Geol. 236 (Mar): 79–88. https://doi.org/10.1016/j.enggeo.2017.08.012.
Standardization Administration of China. 2018. Code for building construction in collapsible loess regions of China. GB 50025. Beijing: Standards Press of China.
Standardization Administration of China. 2019. Standard for geotechnical testing method. GB/T 50123. Beijing: Standards Press of China.
Tabarsa, A., N. Latifi, C. L. Meehan, and K. N. Manahiloh. 2018. “Laboratory investigation and field evaluation of loess improvement using nanoclay—A sustainable material for construction.” Constr. Build. Mater. 158 (Jan): 454–463. https://doi.org/10.1016/j.conbuildmat.2017.09.096.
Wang, J. D., T. F. Gu, M. S. Zhang, Y. J. Xu, and J. X. Kong. 2019. “Experimental study of loess disintegration characteristics.” Earth Surf. Processes Landforms 44 (6): 1317–1329. https://doi.org/10.1002/esp.4575.
Wang, L., and J. Wang. 2014. “Analysis of factors affecting maximum dry density and optimal moisture content in compaction test.” Nucl. Ind. Explor. Des. 1 (1): 72–75.
Wang, X. M., S. X. Chen, and C. B. Cheng. 2013. “Experimental study on physico-mechanical characteristics of undisturbed loess soaked in acid solution.” J. Geotech. Eng. 35 (9): 1619–1626.
Yuan, L., T. F. Gu, W. Hu, L. F. Zhu, and X. Wang. 2017. “Experimental study on disintegration of loess in different regions.” Sci. Technol. Eng. 17 (20): 93–100.
Yuan, Z. X., and L. M. Wang. 2009. “Collapsibility and seismic settlement of loess.” Eng. Geol. 105 (1–2): 119–123. https://doi.org/10.1016/j.enggeo.2008.12.002.
Zhang, X. C., R. Q. Huang, M. Xu, X. J. Pei, X. S. Han, L. J. Song, and F. Y. Zhang. 2014. “Loess liquefaction characteristics and its influential factors of Shibeiyuan landslide.” Rock Soil Mech. 35 (3): 801–810.
Zhang, Y., Z. Q. Hu, H. Chen, B. Li, and Z. Y. Song. 2018a. “Experimental study on evolution of loess structure using acid solutions.” Chin. J. Geotech. Eng. 40 (4): 681–688.
Zhang, Y., Z. Q. Hu, H. Chen, and T. Xue. 2018b. “Experimental investigation of the behavior of collapsible loess treated with the acid-addition pre-soaking method.” KSCE J. Civ. Eng. 22 (11): 4373–4384. https://doi.org/10.1007/s12205-017-0170-4.
Zhang, Y., Z. Q. Hu, L. Li, and Z. J. Xue. 2018c. “Improving the structure and mechanical properties of loess by acid solutions—An experimental study.” Eng. Geol. 244 (Oct): 132–145. https://doi.org/10.1016/j.enggeo.2018.07.023.
Zhu, Y. P., X. Q. Du, X. H. Yang, and H. J. Li. 2019. “Research on utility tunnel foundation treated by compaction piles and post-work immersion test in self-weight collapsible loess area with large thickness.” Rock Soil Mech. 40 (8): 2914–2924.
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Published In
Journal of Materials in Civil Engineering
Volume 34 • Issue 1 • January 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Dec 29, 2020
Accepted: May 10, 2021
Published online: Oct 25, 2021
Published in print: Jan 1, 2022
Discussion open until: Mar 25, 2022
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