Effect of Red Clay Replacement on Strength of Cement Stabilized Peaty Soil

被引：0

作者：

Wang Z. ^{[1
]}

Wang J. ^{[1
]}

Shen L. ^{[1
]}

Ding Z. ^{[1
]}

Li X. ^{[2
]}

机构：

[1] Faculty of Civil and Architectural Engineering, Kunming University of Science and Technology, Kunming

[2] Shanghai Tunnel Engineering Company Limited, Shanghai

来源：

Jianzhu Cailiao Xuebao/Journal of Building Materials | 2019年 / 22卷 / 01期

关键词：

Peaty soil; Replacement rate of red clay; Stabilized soil; Unconfined compressive strength;

D O I：

10.3969/j.issn.1007-9629.2019.01.013

中图分类号：

学科分类号：

摘要：

The red clay was applied to replace the peaty soil at a certain percentage, and the test study on the stabilized peaty soil was carried out with cement. The stabilized mechanism was discussed from macroscopical and microscopical aspects. The results show that the unconfined compressive strength of stabilized peaty soil increases firstly and then decreases with the increase of the replacement rate of red clay when the moisture content is the same. On the one hand, the replacement of red clay enables the particles to fill the soil pores as skeleton. On the other hand, the red clay reduces the organic matter content in the peaty soil and increases the Al content in the stabilized system simultaneously, which excites the activity of hydration and promotes the formation of ettringite. This can make the flocculent structure of peaty soil dense, the particles cementation and the pores filling optimized. © 2019, Editorial Department of Journal of Building Materials. All right reserved.

引用

页码：87 / 93

页数：6

共 23 条

[1] Jiang Z., Dianchi Peaty Soil, pp. 32-55, (1994)
[2] Wang Z., Qu J., Shen L., Et al., Long-term settlement of tunnel caused by shield tunneling in peaty soil, Chinese Journal of Geotechnical Engineering, 39, 8, pp. 1416-1424, (2017)
[3] Kumada K., Chemistry of Soil Organic Matter, pp. 20-32, (1987)
[4] Tremblay H., Duchesne J., Locat J., Et al., Influence of the nature of organic compounds on fine soil stabilization with cement, Canadian Geotechnical Journal, 39, 3, pp. 535-546, (2002)
[5] Wang J., Engineering application of cement mixing pile in peaty soil foundation, The 4th Symposium on Rock and Soil Mechanics and Engineering in Zhejiang Province, pp. 388-391, (1999)
[6] Xun Y., The anti-influences and influences of containing organic matter on cement soil strength, Building Science Research of Sichuan, 26, 3, pp. 58-60, (2000)
[7] Ruan Y., Liu Y., Wang D., Et al., Effect of Kunming's peat & peaty soil on the building foundation, Journal of Kunming University of Science and Technology(Science and Technology), 28, 3, pp. 121-124, (2003)
[8] Ying J., Application of cement mixing pile in soft soil foundation with organic matter, Zhejiang Construction, 2, pp. 14-16, (1997)
[9] Nikookar M., Pashaki M.K., Nikookar H., Et al., The geotechnical improvement of Talesh peat soil with cement, The 3rd International Conference on New Developments in Soil Mechanics and Geotechnical Engineering, pp. 471-477, (2012)
[10] Kalantari B., Huatb B.K., Peat soil stabilization, using ordinary Portland cement, polypropylene fibers, and air curing technique, Electronic Journal of Geotechnical Engineering, 13, pp. 1-13, (2008)

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