Deltares: Strengthening Dikes with Vacuum Consolidation

A new technology that may improve dike strength faster and more economically is being tested in Bleskensgraaf this month.

The technology is known as vacuum consolidation and it involves creating a vacuum below the surface by pumping out water, making the subsurface stronger.

Deltares will provide technical guidance and conduct the analysis.

On Monday, 11 April, Alderman Kees Boender (Molenwaard municipality), director Erik Kraaij (of the Flood Protection Program) and Goos den Hartog (of the Rivierenland Water Authority) launched the trial officially by unveiling the project sign.

The trial

Vacuum consolidation is a technology used to improve dike stability. Water is pumped out of the ground in a process like the one used with a packet of coffee.

The result is a stronger subsurface, meaning that the stability berm can be kept smaller.

This approach can be useful in the case of, for example, dikes in nature-conservation areas or when there are houses adjoining the dike.

The trial will take between nine and twelve weeks and it will be followed by an evaluation to see whether the technology can actually be used as one innovation to make dike upgrades better, faster and cheaper.

Measurements of the subsurface at different times before and after the trial will be used to determine the effect of vacuum consolidation on the undrained shear strength.

This will involve field and laboratory experiments. In addition to the standard laboratory tests, laboratory experiments will also be conducted in vacuum conditions.

Deltares will conduct some of the laboratory testing and the associated analyses, and then draw up a working approach on that basis.

 

Share this article

Follow Dredging Today

Events>

<< Aug 2019 >>
MTWTFSS
29 30 31 1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31 1

Eastern Chapter WEDA Fall 2019 Conference

Wednesday (10/16/19) afternoon will start the program with an opportunity to take the Dredging 101 course.

read more >

10TH Annual Conference Dredging in India

The conference will focus on strategies and solutions to meet the future dredging requirements…

read more >

Australasian Coasts and Ports 2019

Conference Theme “Future directions from 40°S and beyond” reflects the increasing awareness about the need to find suitable…

read more >

PORTS Conference

The PORTS Conference series is internationally recognized as an outstanding opportunity to network with…

read more >

Jobs>

Dredging jobs in Abu Dhabi at NMDC

National Marine Dredging Company “NMDC” aims to be the largest dredging player in the Arab’s Gulf region...

apply

Looking to fill a job opening?

By advertising your job here, on the homepage of DredgingToday.com, you'll reach countless professionals in the sector. For more information, click below....

apply

Looking to fill a job opening?

By advertising your job here, on the homepage of DredgingToday.com, you'll reach countless professionals in the sector. For more information, click below...

apply