Resistance of MgO-GGBS and CS-GGBS stabilised marine soft clays to sodium sulfate attack

被引：74

作者：

Yi, Y. ^{[1
,3
]}

Li, C. ^{[1
]}

Liu, S. ^{[1
]}

Al-Tabbaa, A. ^{[2
]}

机构：

[1] Southeast Univ, Inst Geotech Engn, Nanjing, Jiangsu, Peoples R China

[2] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

[3] Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB, Canada

来源：

GEOTECHNIQUE | 2014年 / 64卷 / 08期

关键词：

clays; ground improvement; laboratory tests; mineralogy; soil stabilisation; GRANULATED BLASTFURNACE SLAG; PARTIAL SUBSTITUTION; ETTRINGITE FORMATION; LIME; SOILS; DURABILITY; STRENGTH; CEMENTS;

D O I：

10.1680/geot.14.T.012

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Reactive magnesia (MgO) and carbide slag (CS) were used to activate ground granulated blastfurnace slag (GGBS) to stabilise a marine soft clay, and the stabilised clays were subjected to accelerated sodium sulfate attack. The results indicated MgO-GGBS stabilised clay was nearly inert to this sodium sulfate solution. The resistance of CS-GGBS stabilised clay to sodium sulfate attack was lower than that of MgO-GGBS stabilised clay, but higher than that of Portland cement stabilised clay. Unlike CS-GGBS stabilised clay, there was no calcium aluminate hydrate or alumino-ferrite monosulfate produced in MgO-GGBS stabilised clay, and hence no ettringite, which would cause deterioration, formed when exposed to sodium sulfate.

引用

页码：673 / 679

页数：7