Ductal, an innovative and cost effective solution ZAK WORLD OF FACADES London - October 4th, 2017

Transcription

1 Ductal, an innovative and cost effective solution ZAK WORLD OF FACADES London - October 4th, 2017

2 I Lightweight mineral long-lasting solution

3 a Ductal in short

4 Ductal range of solutions Cement Silica Sand Ingredients kept secret Defoaming agent RAW MATERIALS PREMIX Metallic Organic FIBERS + Grey Premix White Premix PREMIX + ADMIXTURES Superplasticizers Accelerators Glass Defoaming Antishrinkage shear-thickening self-leveling sprayed DUCTAL SOLUTION

5 What is Ductal? Ultra High Performance Concrete ❶ Mechanical properties. Exceptional resistance 110 to 200 MPa. ❸ Finition. Thin structure Homogeneity. ❺ Innovant. New manufacturing techniques & 22 patents. ❷ Waterproofed. Lowest porosity of any mineral material. Compact cement matrix. ❹ Durable. Low maintenance. Resistance to abrasion carbonation, freeze thaw.

6 What is Ductal? Ultra High Performance Concrete ❶ Mechanical properties. Exceptional resistance 110 to 200 MPa. ❸ Finition. Thin structure Homogeneity. ❺ Innovant. New manufacturing techniques & 22 patents. Envelope ❷ Waterproofed. Lowest porosity of any mineral material. Compact cement matrix. ❹ Durable. Low maintenance. Resistance to abrasion carbonation, freeze thaw.

7 Compression Flection & Ductility Material properties Jean Bouin Stadium Panels before cracking Ductility and security coefficient

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10 Structure Enveloppe Esthetic MuCEM Pedestrian footbridges Columns and cranes Jean Bouin Stadium Ductal tiles with glass inserts Façade lattices Louis Vuitton Foundation 3D doubled curvature facade panels

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12 II Monolithic envelope: roofs

13 a Jean Bouin Stadium

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17 b Montpellier TGV Station

18 Gare TGV Montpellier

19 Mold preparation Reinforcment Unmolding Ductal Licenced PRECAST UNIT ON SITE PREPARATION Transportation Storage Post-tensionning ERECTION PROCESS Rotulas preparation Day erection At night

20 Post-tension: 4C15 (Fn = Mpa) Construction detail Montpellier TGV Station

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22 III Monolithic envelope: facades

23 rainscreen

24 3.6 m x 1.2 m 2.4 m x 1.2 m 1.2 m x 1.2 m 3 formats - 16 mm thick

25 Full Façade System Full Façade System 2012

26 Horizontal molding Edges ribs are structurally necessary Panels thermal insulation rockwool, used as lost formwork (and left in final element) H = 4.2m l = 2.05m e = 3cm / ribs thickness = 23cm

27 Construction details 30mm skin of Ductal 100 to 250mm rockwool 60mm rockwool 36mm interior plaster

28 Window integration Double barrier decompression chamber

29 Erection process 4 panel erected per day in average 3 people and a crane were necessary

30 Full Façade System Sprayed! 2015

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34 2017 Full Façade System High Rise Buildings

35 Tour La Marseillaise Watertight and thermally insulated façade Part of C+D regulations for High Rise Buildings Monolithic shapes integrating all functionalities AJN arch. / Médi Préfa 2017 High Rise Buildings

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37 A condensed façade

38 made compact by precast elements

39 and repeated (3 000 times)

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41 ❷ accelerated erection process (1 floor per week) ❷ ❶ ❹ ❸

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43 Fire Test lead CSTB (Centre Scientifique et Technique du Bâtiment (France) Feb. 3, 2015 Fire behavior for Ductal precast elements (Steel fibers + Polypropylenes Fibers) Sollicitation to 90mn standard ISO fire 90 mn, loaded - stability to 945 C fire 3cm thick plates Stable to fire Temperature ( C) Fire FIRE ISO (ISO 834) Time (mn)

44 Panels after fire test Stable to fire G2 FM AF 0.3% PP Fibers (Out of plane Deformation 35 mm) G2 FM AF 0.4% PP Fibers (Out of plane Deformation 25 mm) G2 FM AF 0.5% PP Fibers (Out of plane Deformation 25 mm)

45 Learnings from Ductal envelopes Larger Larger monolithic full façade system Condensed 5 layers technical layers in one Independence towards main crane Lighter 19m2 7m*2.7m (EDF Saclay) Air and water sealing Thermal insulation High Rise Building Fire prevention Durability & Maintenance Superposed and Compacted Planning 8 times more compressible compared to traditional concrete Sunshadings Save crane rotations Save labor cost Save on lead time Save on structure s dimensions

46 IV Future & conclusion

47 rainsreen Full Façade System

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49 Ductal Rockwool 4 panels linked 6.4 m * 1.60 m continuous design 25 mm thick + Ribs 70 kg/m2

50 Mold design assistance

51 Aesthetic Compact & Light-weight Durable & Stable to fire Simplified erection process Cost effective