Polder constructions & retaining walls
Description
The use of polder constructions for sunken infrastructure has taken off in recent years. Increasing use is made of natural sealing layers in which vertical walls are placed. There is a wide range of possibilities for these sealing walls, with specific advantages and disadvantages. Within the large-scale project 'Leeuwarden Vrij-Baan / Haak om Leeuwarden', many polder constructions and seal wall systems are applied. Existing systems have been further developed or innovative techniques applied. The lecture afternoon will focus on the design and implementation aspects of the various systems, considerations and risks. The afternoon will end with drinks
13.00 h Reception with coffee/tea
13.25 h Welcome
13.30 h Contracts Haak om Leeuwarden - Willem de Jonge / Edward Herzog (Projectbureau Vrij-baan)
13.55 o'clock Contract requirements for polder constructions and overview of systems close walls - Erik Kwast (Grontmij / Witteveen+Bos)
14.20 o'clock Polder construction and close walls Mixed-In-Place / foil screens - Aqueduct WIW - Rijk Gerritsen (Grontmij / Witteveen+Bos)
14.45 o'clock Break
15.10 am Polder construction and close walls bentonite / foil screens - Contract Midden - Piet van Duijnen (Grutte Fier / Mobilis / Huesker)
15.35 pm Polder construction and close walls cement-bentonite walls / foil screens - Aqueduct RW31 - Onno Dijkstra (MNO Vervat / Fugro)
16.00:00 Change of PPE
16:15 Tour of work site with division into groups of 10-15 people, viewing aqueduct West Invalsweg (walking distance) accompanied by project team
17:15 Back at project office: drinks & refreshments
18:00 Closure
Location
Provincial project office Freeway
Snelliusweg 11, 8912 BE Leeuwarden
Organiser
Construction and Hydraulic Engineering
Geotechnics
Tunnelling Technology and Underground Works
Name and contact details for information
Rijk Gerritsen, tel. 0570 - 69 75 11, e-mail r.gerritsen@witteveenbos.nl (see also below) Anja Haveman, tel. 058 - 28 44 040, e-mail infopbl@fryslan.nl