Effect of fly ash on microstructural and resistance characteristics of dredged sediment stabilized with lime and cement

被引：30
|
作者：
Furlan, Ana Paula [1 ,2 ]
Razakamanantsoa, Andry [2 ]
Ranaivomanana, Harifidy [3 ]
Amiri, Ouali [3 ]
Levacher, Daniel [4 ]
Deneele, Dimitri [2 ,5 ]
机构：
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Transportat Engn, EESC,USP, Sao Carlos, Brazil
[2] Univ Gustave Eiffel, IFSTTAR, GERS GIE, F-44344 Bouguenais, France
[3] IUT St Nazaire, GEM, CNRS 6163, UMR, Rue Michel Ange, F-44600 St Nazaire, France
[4] Univ Caen Normandy, M2C, UMR 6143, F-14000 Caen, France
[5] Univ Nantes, Inst Mat Jean Rouxel Nantes, CNRS, 2 Chemin Houssiniere,BP 32229, F-44322 Nantes 3, France
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 272卷
关键词：
Dredged sediment; Fly ash; Soil stabilization; Mechanical resistance; Microstructure; STRENGTH DEVELOPMENT; WATER-CONTENT; KINETICS; PARAMETERS; BEHAVIOR; SOIL;
D O I：
10.1016/j.conbuildmat.2020.121637
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study deals with the definition of an efficient combination of fly ash (FA) with lime or cement and with both, to improve the dredged sediment (DS) properties. At early age, filler and nucleation effects of FA lead to a refinement of the microstructure in addition to the macro porosity reduction induced by lime and cement. At long term, the microstructure becomes denser due to the pozzolanic property of FA. At macroscale, DS stabilized using FA show lower shrinkage and higher mechanical resistance than that stabilized without FA, with more pronounced effects when FA is mixed with cement. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：12
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