REINFORCEMENT-DRAINAGE COMPOSITE GEOTEXTILE MATERIAL Russian patent published in 2015 - IPC E01C5/20 

FIELD: construction.

SUBSTANCE: invention relates to construction materials, used in arrangement of reinforcement-drainage structures of roads, earth structures, foundations, etc. The reinforcement-drainage composite textile material includes a matrix from a non-woven filtering material, reinforcing elements from a unidirectional cord placed on a matrix and fixed to the matrix. Reinforcing elements are made each from two unidirectional cords placed on the matrix with a gap in one of directions of reinforcement and without a gap in other reinforcement direction. Reinforcing cords are fixed to the matrix by means of tying (stitching) of the matrix and reinforcing cords with a thread. The gap between the cords in one of reinforcement directions makes 0.5÷2.5 of the cord width, and the size of tying stitches makes 0.7÷2.5 of the cord width.

EFFECT: increased filtering capacity of a material due to increase of its aerotransparent surface with simultaneous increase of material resistance to shift loads and elimination of material anisotropy by deformability.

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