Open AccessResearch on durability and microscopic mechanisms of the portland slag cement stabilized soil under carbonation condition
Author(s) -
Fayin Sun,
Jiye Wang,
Hongzhou Xu,
Dongmei Zhu
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/330/4/042037
Subject(s) - portland cement , carbonation , carbonization , materials science , cement , slag (welding) , durability , composite material , soil stabilization , soil water , scanning electron microscope , environmental science , soil science
In this study, physical-mechanical properties and microscopic characteristics of the slag Portland cement stabilized soil and the normal Portland cement stabilized soil after carbonization were investigated and compared through carbonization depth tests, unconfined compression tests, XRD and SEM tests. Results showed that carbonation depth of the slag Portland cement stabilized soil was lower than that of the normal Portland cement stabilized soil on each carbonization stage. Results of XRD and SEM tests showed that the normal Portland cement stabilized soil were decomposed into Cal after carbonization, which lead to loosened structure and strength retrogression.