CLC number: TU472.4
On-line Access: 2016-05-04
Received: 2015-06-19
Revision Accepted: 2015-12-15
Crosschecked: 2016-04-15
Cited: 1
Clicked: 4287
Yin Cheng, Hao Yu, Bao-lin Zhu, Dao-xin Wei. Laboratory investigation of the strength development of alkali-activated slag-stabilized chloride saline soil[J]. Journal of Zhejiang University Science A, 2016, 17(5): 389-398.
@article{title="Laboratory investigation of the strength development of alkali-activated slag-stabilized chloride saline soil",
author="Yin Cheng, Hao Yu, Bao-lin Zhu, Dao-xin Wei",
journal="Journal of Zhejiang University Science A",
volume="17",
number="5",
pages="389-398",
year="2016",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1500185"
}
%0 Journal Article
%T Laboratory investigation of the strength development of alkali-activated slag-stabilized chloride saline soil
%A Yin Cheng
%A Hao Yu
%A Bao-lin Zhu
%A Dao-xin Wei
%J Journal of Zhejiang University SCIENCE A
%V 17
%N 5
%P 389-398
%@ 1673-565X
%D 2016
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500185
TY - JOUR
T1 - Laboratory investigation of the strength development of alkali-activated slag-stabilized chloride saline soil
A1 - Yin Cheng
A1 - Hao Yu
A1 - Bao-lin Zhu
A1 - Dao-xin Wei
J0 - Journal of Zhejiang University Science A
VL - 17
IS - 5
SP - 389
EP - 398
%@ 1673-565X
Y1 - 2016
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1500185
Abstract: Saline soil stabilization is being increasingly applied in foundation treatment engineering. chloride saline soil obtained from sites and laboratory-made chloride soil (ZS) with various NaCl concentrations prepared artificially were stabilized using alkali-activated slag (AS). A series of unconfined compressive strength (UCS) tests, X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDXA), thermal gravity–differential thermal gravity (TG–DTG), and ion concentration tests were conducted to investigate the strength variation and mechanism of the AS-stabilized chloride saline soils. The results showed that NaCl has a significant influence on the strength of AS-stabilized chloride saline soil and the strength of AS-stabilized ZS (GZS) increases with increase of chloride content in soil samples. friedel’;s salt (Fs) and naOH are generated by the reaction of NaCl and CaO·Al2O3 (CA) in the slag in the GZS. Fs can fill the pores in stabilized soil, and naOH can promote calcium silicate hydrate (CSH) generation. These two effects combine to enhance the strength of GZS. The relationship between the rate of increase of 28-d UCS of AS-stabilized chloride saline soil and the chloride content in soil was obtained through regression analysis of the increase of UCS of GZS.
This article mainly focuses on the compressive strength and mechanism of alkali-activated slag-stabilized chloride saline soil. The paper overall writing quality of English language is very good and the results and discussions could be helpful to the relevant studies.
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