(35% coarsesand, 45% medium fine sand, and 21% very fine sand, clay, and silt) to the surface and deposited 6–20 g of soil carton per gram of litter removed (Fig. 14.4).Herrick and Lal (1996)found that termites deposited an average of 2.0 g of soil at the surface for every ...
only - The existing construction waste recycling technologies and standards have been long applied in construction and demolition (C&D) waste recycling, mainly focused on the production and use of coarse recycled aggregates. Very few papers and process focus on the production of recycled sand ...
The quaternary aquifer of Abidjan is composed of coarse sand of the marine cordon and medium sand of the lagoon depressions. The coarse sands are found in the southern part of the aquifer while the medium sands in the north part.The application of the modified Kozeny Carman mo...
(0.80); coarse-grained sediment will have a lower porosity than fine-grained sediment (as clays tend to stand on edge and create large porous volumes); and sediment porosity will decrease with depth due to compaction.Tortuositydescribes the path a molecule or any other solute must take in ...
Gravel and coarse sand make up significant portions of some environmentally important sediments, but the hydraulic properties of the sediments are typically obtained in the laboratory using only the fine fraction (e.g., <2 mm or 4.75 mm). Researchers have found that the gravel content has a si...
Grosbellet C, Vidal-Beaudet L, Caubel V, Charpentier S (2011) Improvement of soil structure formation by degradation of coarse organic matter. Geoderma 162:27–38 Article CAS Google Scholar Hajnos M, Lipiec J, Świeboda R, Sokolowska Z, Witkowska-Walczak B (2006) Complete characterizatio...
Skp 0 Symmetric pore size distribution curve ; Skp 1 Coarse skewness S 1 Fine skewness kp 油藏物理学—储层岩石的孔隙结构及孔隙度 3) peak value/peak/crest value Peak value measure the steep degree distribution curve, that is, measure that the exhibition of pore throat diameter of...
the smaller the particle size，the higher the porosity. This is best demonstrated by comparing the porosity of coarse gravels w ith fines，and the total gravel assemblage w ith silts and clays.Table 5. 1 Range in values of porosity An important distinction is the difference betw ...
These lithofacies represent fluvial, deltaic and lacustrine facies associations; with wide-range of very coarse-pebbly sandstone to ripple fine-laminated sandstone and cross-bedded sandstone (Fig. 3). In addition to the dark grey shale facies that indicates floodplain and lacustrine deposits. Our ...
and the hydrometer test were merged to provide a complete view of the grain size distribution of the entire sample. Phi values from 0 to 9, reflecting the particle sizes from very coarse sand to clay size, were converted to present the sieves and the hydrometer test radii. The distribution ...