@article{fdi:010066836, title = {{D}ynamics of soil aggregate size in turbulent flow : respective effect of soil type and suspended concentration}, author = {{W}endling, {V}. and {L}egout, {C}. and {G}ratiot, {N}icolas and {M}ichallet, {H}. and {G}rangeon, {T}.}, editor = {}, language = {{ENG}}, abstract = {{T}he fate of eroded soil particles impacts soil loss, river engineering and aquatic ecosystems. {H}owever, little is known about soil aggregate dynamics within the flow just after their detachment from the soil matrix. {T}he relationship between particle size and turbulence has already been studied but few studies analysed the associated effect of particle concentration. {T}he disaggregation/flocculation of three soils, two badland materials and a well developed calcareous brown soil, was studied by using a grid-stirred tank. {A}n isotropic and homogeneous turbulence was generated to focus on the effects of suspended concentration on particle sizes. {I}ncreasing the suspended concentration in the range 1-10 g {L}-1 leads to a decrease of the proportion of the medium size particles and of an increase of the proportion of the smallest particles, as a consequence to enhanced abrasion. {T}he soil aggregates with the largest organic content had the highest strength but were still subject to disaggregation within the turbulent flow, the resulting particle size depending on the suspended concentration. {T}his study demonstrates that soil aggregate characteristics are influenced by concentration, this behaviour being dependent upon the soil type.}, keywords = {{S}oil erosion ; {A}ggregates ; {S}uspended sediment dynamics ; {D}isaggregation ; {S}ediment transport ; {P}article size distribution ; {FRANCE} ; {ALPES}}, booktitle = {}, journal = {{C}atena}, volume = {141}, numero = {}, pages = {66--72}, ISSN = {0341-8162}, year = {2016}, DOI = {10.1016/j.catena.2016.02.015}, URL = {https://www.documentation.ird.fr/hor/fdi:010066836}, }