(Article of periodic en Anglais - 2014)

Document title

Effect of rice husk biochar and coal fly ash on some physical properties of expansive clayey soil (Vertisol)

Authors(s) and Affiliation(s)

LU S.-G. (1) ; SUN F.-F. (1) ; ZONG Y.-T. (1) ;
(1) Zhejiang Provincial Key Lab. of Subtropical Soil and Plant Nutrition, College of Environmental and Resources Sciences, Zhejiang Univ., Hangzhou, CHINE


The aim of this work is to evaluate the effect of rice husk biochar (RHB) and coal fly ash (CFA) on the formation and stability of aggregates, pore size distribution, water retention, swell–shrinkage, consistency limit, and tensile strength of an expansive clayey soil (Vertisol). Results indicate that : the RHB promotes the formation of macroaggregates and resists aggregate slaking; RHB and CFA change the pore size distribution and increase larger pores of soil; RHB and CFA decrease the tensile strength and coefficient of linear extensibility (COLE) of clayey soil. The RHB and CFA are therefore able to improve the physical quality and swelling–shrinkage status of expansive clayey soils, being a potential soil amendment for improving poor physical characteristics of the clayey soil


Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2014, vol. 114 [pp. 37-44]

Bibliographic references : 1 p.

Collation : 10 fig.



INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.10.014

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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