Rapid extraction of pavement aggregate gradation based on point clouds using deep learning networks

Usage of asphalt mixture with poor gradation will most likely lead to pavement deficiency. There is a growing need for rapid and non-destructive methods to extract pavement aggregate gradation. In this study, a deep learning-based method that utilizes point clouds data for gradation extraction was proposed. Firstly, a data enhancement...

Impact of flow variability and sediment characteristics on channel width evolution in laboratory streams

Alluvial rivers are shaped by sequences of water flows excavating their channels. Observations show that besides the magnitude, the frequency and duration of streamflow oscillations might also be important for the river channel formation. In addition, the river morphology appears influenced by both size and degree of uniformity of the...

Gradation effects on sediment transport in oscillatory sheet flow

The main goals of this study are to obtain more insight and quantitative data of the selective transport process under sheet flow conditions. Experiments were carried out in the Large Oscillating Water Tunnel of WL DELFT HYDRAUUCS for five different hydraulic conditions. The sand that was used consisted of a mixture of 50% fine (0. 13mm) and 50%...

Berm Breakwaters: Influence of Permeability and Stone Gradation

The influence of permeability and stone gradation on the reshaping and wave overtopping of berm breakwaters was studied by flume model tests. Another aspect studied was the difference in reshaping comparing a berm breakwater constructed of two stone classes and a more stable Icelandic type of berm breakwater with the largest berm stones used as...

Influence of permeability and stone gradation on Berm Breakwater stability

The influence of permeability and stone gradation on the reshaping and wave overtopping of berm breakwaters was studied as part of this research. Another aspect studied was the difference in reshaping comparing a berm breakwater constructed of two stone classes and a more stable Icelandic type of berm breakwater built of three stone classes with...

Kwaliteit en kwaliteitscontrole van breuksteen in de waterbouw

In dit rapport zijn van een periode van ruim 5 jaar de resultaten van onderzoek naar eigenschappen, produktiemogelijkheden, bemonsterings en beproevingsmethoden voor breuksteen en verder de ervaringen met kwaliteitszorg in de praktijk verwerkt. De op grond van een en ander in het rapport geformuleerde voorstellen voor eisen, besteksbepalingen en...

Geleidelijke sluiting VI - Invloed van de vorm en gradering op de stabiliteit van stortsteen

Onderzoek naar de invloed en vorm van stortsteen. Bij zand en grind is het gebruikelijk de gemiddelde zeefdiameter ts gebruiken (gemiddeld naar gewicht). De bepaling van de zeefdiameter is voor stortsteen vrijwel ui tgesloten) zodat naar andere maten moet worden gezocht. Hiervoor komt in aanmerking de nominale diameter d = (volume)1/3 en een...