Instruments used in the research on Cohesive Sediments

A research program was started to study the behaviour of cohesive sediments at the Delft University of Technology in 1989. As part of this project a well-provided physico-chemicallaboratory was built within the Hydromechanics Laboratory and adequate instrumentation was purchased. These new instruments and other instruments already present in the laboratory were tested in order to check their operation in saline suspensions of China Clay, an artificial cohesive sediment. Under these conditions the following instruments were tested and found in order for employment: an optical concentration meter (Oslim), an electromagnetic flowmeter, a thermometer, an electromagnetic velocity meter, a wave height meter and a pore-pressure meter. Furthermore, some devices were tested for the determination of basic physico-chemical quantities, such as the pH, the suspended sediment concentration determined by filtration, the mass and the conductivity, for instance. A description of these tests and some general specifications of the devices are presented in this report.Hydraulic EngineeringCivil Engineering and Geoscience