One of the key challenges in Delta Technology is related to possibilities of building on and with soft material. Soft materials (e.g. from dredgedmaterial and mine tailings) can be reused to form robust waterdefences enclosure dams and for land building. The material can beused to combat settlement in Sustainable Delta Cities as a cost-effective material for flood defences and as the basis for nature-based land reclamations like Marker Wadden. As such "Bouwen met Slib" has been identified as an important innovation to strengthen the international position of Dutch engineering companies. This project will improve the recent new version of the numerical tool Delft3D to improve prediction of geometry and material properties distribution in fine sediments and disposal site deposits with specificfocus on dewatering and basic 3D processes.

Sediment waste of mine processes (tailings) as well as dredged sediments are deposited in dedicated deposits or beneficially re-utilized to build new lands (e.g. Marker Wadden) to improve resilience of flood defences or enhance habitat restoration. The ability to improve the prediction capabilities of the sediment deposition dynamics as well as the characterisitcs and properties of theresulting deposits (e.g. distribution of sand and mud strength total settlement and time scale) is critical to reduce cost and risk of these activities. Current knowledge and predictive tool is nowadays limited. This project builds up on the positive development and findings of theprevious phase towards further improving understanding and modeling of soft sediments depositional processes

1) Further validation of the new Delft3D-slurry module developedduring Phase I . 2) Theretical development of aging (i.e. time dependent strengthdevelopment) function and embedding in Delft3D-slurry. 3) Exploration of 3D performance

The behaviour of soft sediments and slurries in depots and land reclamations is surrounded by uncertainties. The availablility of new monitoring data and measurements will allow a major advance in our understanding of this behaviour and in the ability to model and predict its future properties. This project will begin from the promising results of Phase I. These will be expanded by adding a sediment aging time-dependent function and likely basic 3D simulations. The resulting model will be the single model world-wide with 2D and potentially 3D prediction capability of these processes.

Alle partijen krijgen alle resultaten van het Project ter beschikking. De resultaten van de samenwerking kunnen breed verspreid worden. Partijen kunnen over deze resultaten vrijelijk publiceren. De resultaten zullen volledig openbaar beschikbaar zijn, met uitzondering van ter beschikking gestelde achtergrondkennis.

De informatie over dit project wordt kenbaar gemaakt via de website van de TKI Deltatechnologie (projectbeschrijving) en de projectwiki van Deltares (projectvoortgang en resultaten).

Na de datum waarop deze Overeenkomst in werking is getreden, maar uiterlijk tot een jaar voor de beoogde datum waarop het Project zal zijn voltooid, kunnen ondernemers en/of onderzoeksinstellingen, die op het terrein van het relevante subsidieprogramma van het TKI werkzaam zijn alsnog als Partij toetreden. Een later toetredende Partij zal een nader overeen te komen bijdrage in kind en/of in cash moeten leveren die in redelijke verhouding staat tot zijn relatief aandeel in het Project na toetreding. De overige Partijen ontvangen vervolgens naar rato een terugbetaling en/ of gedeeltelijke vrijstellingen van hun nog te leveren bijdrage in kind, voor zover niet besloten wordt de bijdrage van de later toetredende Partij aan het projectbudget toe te voegen.