Abstract
Through laboratory test of cement-soil's unconfined compressive strength, the influence of Mg2+, Cl- and SO42- content on the strength of salt-rich cement soil was explored, and the process and mechanism of causing the increase of salt-rich cement-soil's strength were studied through X-ray diffraction and scanning electronic microscopy (SEM). The research results show that Mg2+, Cl- and SO42- have negative influence on cement-soil's strength and the higher the ion content is, the greater the negative effect is; Mg2+, Cl- and SO42- not only change cement-soil's micro-structure, but also restrain the formation of C-S-H and C-A-H, which result in the decrease of cement-soil's strength.
Original language | English |
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Pages (from-to) | 26-30+42 |
Journal | Zhongguo Gonglu Xuebao/China Journal of Highway and Transport |
Volume | 21 |
Issue number | 6 |
State | Published - Nov 2008 |
Scopus Subject Areas
- Civil and Structural Engineering
- Transportation
- Mechanical Engineering
Keywords
- Cement-soil
- Experimental research
- Microstructure
- Road engineering
- Soluble salt ion
- Unconfined compressive strength