Effects of Early Structural Changes of Engineered Soils on Green Roof and Bioretention Performance

Central Europe towards Sustainable Building

生态环境科学

Snehota, M.^1^2 ; Hanzlikova, J.^1^2 ; Heckova, P.^1^2 ; Sacha, J.^1^2 ; Jelinkova, V.^1 ; Kaestner, A.^3

Faculty of Civil Engineering, Czech Technical University, Prague, Czech Republic^1

University Centre for Energy Efficient Buildings, Czech Technical University, Prague, Czech Republic^2

Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, Villigen, Switzerland^3

关键词: Colloid transport;    Field-scale experiments;    Hydraulic properties;    Improved designs;    Management procedures;    Noninvasive methods;    Urban hydrology;    Water infiltration;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/290/1/012086/pdf
DOI  :  10.1088/1755-1315/290/1/012086

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Engineered soils play an important role in urban hydrology e.g. in the functioning of green roofs and storm water bioretention beds. Water infiltration, colloid transport and heat transport are affected by changes in pore system geometry particularly due to development of macropores and clogging by particles. The rate of pedogenesis is often faster than in natural soils due to higher loads of particles as well as by extreme water regimes. In the presented project we assess the temporal changes of hydraulic properties of engineered soils in typical bioretention beds and green roofs by conducting field scale experiments. The aim is to elucidate changes in hydraulic properties by studying the structural changes of soils at the microscale by invasive and noninvasive methods. The outcomes of the research will lead to improved design and management procedures for green roofs and bioretention beds.