Mechanism analysis of influence of soluble salt ions on strength of salt-rich cement-soil

Hao Feng Xing, Chao Xu, Guan Bao Ye, Xiao Ming Yang

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

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 languageEnglish
Pages (from-to)26-30+42
JournalZhongguo Gonglu Xuebao/China Journal of Highway and Transport
Volume21
Issue number6
StatePublished - 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

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