Geocell for load support applications

E - Fixed Constructions – 02 – D

Patent

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E02D 3/00 (2006.01) E02D 17/20 (2006.01)

Patent

CA 2733055

A geocell is disclosed that has high strength and stiffness, such that the geocell has a storage modulus of 500 MPa or greater at 23°C; a storage modulus of 150 MPa or greater at 630C when measured in the machine direction using Dynamic Mechanical Analysis (DMA) at a frequency of 1 Hz; a tensile stress at 12% strain of 14.5 MPa or greater at 230C; a coefficient of thermal expansion of 120 x 10'6 /0C or less at 250C, and/or a long term design stress of 2.6 MPa or greater. The geocell is suitable for load support applications, especially for reinforcing base courses and/or subbases of roads, pavement, storage areas, and railways.

Linvention concerne une géocellule présentant une résistance et une rigidité élevées, ladite géocellule possédant un module de conservation supérieur ou égal à 500 Mpa à 23 °C ; un module de conservation supérieur ou égal à 150 MPa à 63 °C lorsque mesuré dans le sens de la machine par analyse DMA (Dynamic Mechanical Analysis) à une fréquence de 1 Hz ; une contrainte de traction à une déformation de 12 % supérieure ou égale à 14,5 Mpa à 23 °C ; un coefficient dexpansion thermique inférieur ou égal à 120 x 10'6 /0C à 25 °C, et/ou une contrainte de conception à long terme supérieure ou égale à 2,6 Mpa. La géocellule convient à des applications de support de charge et particulièrement au renforcement des couches de base et/ou de sous-base des routes, chaussées, zones de stockage et voies ferroviaires.

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