Effect of environment change on the strength of cement/lime treated clays

Takenori HINO, Rui JIA, Seiji SUEYOSHI, Tri HARIANTO

PDF(1078 KB)
PDF(1078 KB)
Front. Struct. Civ. Eng. ›› DOI: 10.1007/s11709-012-0153-y
RESEARCH ARTICLE

Effect of environment change on the strength of cement/lime treated clays

Author information +
History +

Abstract

The field strengths of cement/lime treated clays were investigated in the Ariake Sea costal lowlands. The deposition environment of the investigation location is reconstructed and compared to the present ground environment. The mechanism of the ground environment change and its effect on the strength of cement/lime treated soil are discussed. The strength development of improved soil using cement and lime in different curing environments was investigated in the laboratory for studying the effect of environment change on the strength also. It has been found that the strength deterioration of improved soil in deep mixing method is due to 1) the ground environment change due to the secondary oxidation which results in low pH value and high organic content, and 2) the formations of the porous structures result from the elution of the calcium ions. Also, it has been found that the initial strength increase of the improved soil is related to the dissolved silica and that the dissolution of the silica in clay minerals needs long time. When examining the long-term strength for preventing strength degradation, the effect of environmental change has to be considered. The importance of measuring pH and oxidation-reduction potential (ORP) of the ground for cement/lime solidification method is explained.

Keywords

soil solidification / ground environment / strength deterioration / pH / oxidation-reduction potential (ORP) / silica

Cite this article

Download citation ▾
Takenori HINO, Rui JIA, Seiji SUEYOSHI, Tri HARIANTO. Effect of environment change on the strength of cement/lime treated clays. Front Struc Civil Eng, https://doi.org/10.1007/s11709-012-0153-y

References

[1]
Shimoyama S, Matsuura H, Hino T.Geology of the Saga District. Quadrangle Series, 1∶50,000, Fukuoka (14), No.71, NI-52–11–9, 2010, 97 (in Japanese with English abstract)
[2]
Japanese Geotechnical Society. Handbook of Geotechnical Engineering. Chapter 8, Ground Improvement, 1999, 1197-1262 (in Japanese)
[3]
Japan Lime Association. Handbook of Lime Stabilization: Design and Construction, 2006, 1-23 (in Japanese)
[4]
Hino T, Igaya Y, Chai J C, . Properties of soft clays in the Saga plain with respect to embankment construction. In: Proceedings of the International Symposium, Exhibition, and Short Course on Geotechnical and Geosynthetics Engineering: Challenges and Opportunities on Climate Change. Bangkok, Thailand, 2010, 167-177
[5]
Hino T, Alfaro M C, Shimoyama S, . Physico-chemical investigation on soft clay foundation improved with deep mixing method. In: Proceedings of the International Symposium on Lowland Technology 2006. Saga, Japan, 2006, 301-306
[6]
Onitsuka K, Negami T. Ground subsidence in coast area of Ariake Bay, Chikugo Plain. Doboku Gakkai Ronbunshuu, 2006, C: 643-656 (in Japanese with English abstract)
[7]
JGS 0821-2000. Practice for making and curing stabilized soil specimens without compaction. Method and Interpretation of the Soil Testing, 2000, 308-316 (in Japanese)
[8]
MLIT. For Tank Leaching Test. Notification, Office of Public Works, Engineering Affairs Division, Minister's Secretariat, MLIT, 2001 (in Japanese)
[9]
Yamanaka T. New microbial indicators for the environmental assessment: sulphuric isotope geochemistry. Research on Lowland Technology, No. 9. Institute of Lowland Technology, Saga University, Japan, 2000, 5-12 (in Japanese)
[10]
JGS 0211-2009. Test Method for pH of Suspended Soils. Method and Interpretation of the Soil Testing, 2009, 310-315 (in Japanese)
[11]
Ariizumi A. Pozzolanic reaction. Tsuchi-to-Kiso, 1974, 22(1): 4 (in Japanese with English abstract)
[12]
Japanese Geotechnical Society. Guide series 20, Introduction to environmental geotechnics, Maruzen, 1999, 200-218 (in Japanese)
[13]
Isida H. Strength properties and hardening reaction mechanism of quicklime-soil mixture. Tsuchi-to-Kiso, 1994, 42(4): 9-14 (in Japanese with English abstract)
[14]
Tanaka Y, Hino H, Yamanaka H, . Analysis of silica and its release/stabilization properties of bottom sediment in Ariake Gulf. In: the 41th Japan National Conference on Geotechnical Engineering. JGS, CD-ROM, 2006, 1045-1046 (in Japanese)
[15]
Kamon M, Asakawa M. Soil classification and physic-chemical properties, New Frame in Civil Engineering 16 Mechanics of Soils (I). Gihoudou, 1988, 51-53 (in Japanese)
[16]
Fukaya Y, Tuyuki N.Materials Science of Cement and the Concrete. Gijyutsusyoin, 2003, 166 (in Japanese)
[17]
Miura N, Koga Y, Nishida K. Application of a deep mixing method with quicklime for Ariake-clay ground. Tsuchi-to-Kiso, 1986, 34(4): 5-11 (in Japanese with English abstract)
[18]
Kitazume M, Takahashi H. Long term property of time treated marine clay. Doboku Gakkai Ronbunshu, 2008, 64(1): 144-156 (in Japanese with English abstract)
[19]
Hara H, Hayashi H, Suetugu D, . Study on the property changes of lime-treated soil under sea water. Doboku Gakkai Ronbunshu, 2010, 66(1): 21-30 (in Japanese with English abstract)

Acknowledgements

The author gratefully acknowledges all those who assisted in this study. In analyzing the Ashikari cores, reconstruction of the geological environment in the initial phase of deposition was conducted with the help of Dr. Shoichi Shimoyama of the Graduate School of Science, Kyushu University, Japan. Analysis of organism’s essential elements in the core was conducted by Dr. Toshiro Yamanaka of the Graduate School of Natural Science and Technology, Okayama University, Japan. The authors are grateful to the Japan Society for the Promotion of Science for funding the present research work under Grant-in-Aid for Scientific Research · Scientific Research B, 23360204 (Principal Investigator: Takenori Hino) and Grant-in-Aid for Scientific Research · Challenging Exploratory Research, 23656300 (Principal Investigator: Takenori Hino). The authors are also grateful to the Prof. Jinchun Chai at Saga University, Japan and Prof. Shuilong Shen at Shanghai Jiao Tong University, China for their constructive suggestions for this research. Logistical and financial support is given to the fourth author while a visiting associate professor at the Institute of Lowland and Marine Research, Saga University, Japan are gratefully acknowledged.

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
AI Summary AI Mindmap
PDF(1078 KB)

Accesses

Citations

Detail

Sections
Recommended

/