RT journal article
T1 Error on the Estimation of Sand Size Parameters When Using Small Diameter Sieves and a Solution
A1 López García, Patricia
A1 Muñoz Pérez, Juan José
A1 Contreras de Villar, Antonio
A1 Jigena Antelo, Bismarck
A1 Santos, Juan J.
A1 Romero Cózar, Jeanette
A1 Contreras de Villar, Francisco
A1 Vidal Pérez, Juan Manuel
A2 Ciencias y Técnicas de la Navegación y Construcciones Navales
A2 Física Aplicada
A2 Ingeniería Industrial e Ingeniería Civil
K1 sieving
K1 sand size
K1 D50
K1 sand parameters
K1 beach nourishment
AB Analyses were carried out to determine the main sand size parameters (median grain size D-50 and sorting sigma) for beach nourishment purposes using the sieving method aboard a dredger. Due to a lack of space and the need to carry and use the material with ease, the sieves are commonly small (10 cm diameter), and the shaking procedure is usually performed by hand. However, the influence of shaking, either mechanically or manually, has not yet been studied with 10 cm diameter sieves. Therefore, 20 samples were taken from inside the hopper of a trailing suction dredger and sieved both manually and mechanically for 10 min. The results showed that manual sieving yielded higher D-50 values than the mechanical procedure. The average error arising from using the manual method was 14%, but it can reach 36.5%. The granulometric analysis carried out for different shaking times has shown that this error is < 5% when at least 20 min of shaking is performed. The mechanical procedure gave always finer sand results. In addition, the overfill ratio calculated for both mechanical and manual results reached differences of up to 48%
PB FRONTIERS MEDIA SA
SN 2296-7745
YR 2021
FD 2021-09
LK http://hdl.handle.net/10498/25866
UL http://hdl.handle.net/10498/25866
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 05-nov-2026