Paciusgatan (street), Helsinki FINLAND
01-014-A – pag 2/2
Problem Soft, sensitive subsoil; High groundwater level, partial flooding by Baltic Sea.
Cubic Area: 4,000 m3 expanded clay, 800 m3 lightweight concrete. Load: 43,000 vehicles/day.
Composition Road bed 20 cm lightweight concrete, Leca® 4-12 mm, cement component 200 kg/m3; Stabilisation of the top 10 cm of Leca® using bitumen emulsion (15 l/m2). Base Leca® in areas for widening (not pre-loaded by traffic); Thickness varies between 0.3 and 1.7 m. Subsoil 1-4 m fill (gravel and roundstone); Beneath, thick organic clays to a depth of 13 m; Water contents of 50 to 130%, shear strength 7-8 kN/m2; High groundwater levels.
Performance Measurements Settlement measurements (objective: max. 100 mm settlement in 30 years). Measurement data not available. Flaws/damage Type: no data. Time: -Maintenance work No data.
Walking and cycling
Asphaltos Asphaltos Gravel LWA concrete Bitumen emulsion LWA
Building method Application and compaction with light bulldozer.
Appraisal/Experiences Leca® can also be used on problems involving uplift pressure.
Quality control Compaction test: 550-650 kg/m3. Plate bearing tests: Ev2 = 45-55 MN/m3.
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