A sediment control device for attachment to a surface with liquid flow moving in a flow direction includes a base fastenable to the surface, the base including a trailing portion, a central portion adjacent the trailing portion, and a distal portion adjacent the central portion; a first core located at the central portion; a second core located at the distal portion; a fastening element for fastening the base to the surface with the trailing portion in a downstream location and the distal portion in an upstream location relative to the flow direction, the fastening element being vertically aligned with the first core; and the base movable from a first position in which the second core is generally horizontally adjacent the first core along the surface to a second position in which the second core is generally vertically raised relative to the first core and the surface.

An internally braced synthetic mattress is a geosynthetic structure made of a geosynthetic material. The structure has a bottom side, a top side and at least one upright side joining at least a portion of the bottom side and top side. The at least one upright side is formed by an upright fold of the geosynthetic material. A horizontal bar is woven through a portion of the bottom side of the geosynthetic structure and joined with an upright bar and a diagonal bar to form at least one angle brace to support at least a portion of the geosynthetic structure. The geosynthetic structure contains a filler to prevent/reduce erosion.

Embodiments provide a quay wall attachment and a method for promoting biodiversity in a marine environment. The quay wall attachment includes a quad plate and a module. The quad plate is secured to a portion of a quay wall located underwater. The module includes a coral module, a fish module, a plant module, and combinations of the same. The coral module includes living corals and is secured to the quad plate. The fish module includes a hollow space and is secured to the quad plate. The plant module includes living marine plants and a hollow space, and is secured to the quad plate.

Provided is a sandbag which is unlikely to break down even when using water-absorbing resin particles therein. A sandbag having a water-permeable bag and water-absorbing resin particles stored in the bag, wherein the pure-water absorption factor of the water-absorbing resin particles is at least a factor of 1,000, and the compression-breaking stress of the water-absorbing resin particles when swollen with pure water is at least 0.1N.

A cementitious composite for in-situ hydration includes a first layer, a second layer, a cementitious mixture including cementitious material positioned between the first layer and the second layer, and a structure layer positioned between the first layer and the second layer. The cementitious mixture comprises a majority of a volume between the first layer and the second layer.

Disclosed is an improved flexible flood barrier system for creating a watertight barrier. The system includes a novel hinged clamping bar assembly configured to engage a hem of the fabric flood barrier. The fabric flood barrier is comprised of a waterproof layer reinforced with Kevlar straps. The Kevlar straps are weaved together through slots in one of the layers without the need for stitching upon any of the waterproof layers. When deployed the improved fabric flood barrier system prevents storm surges from breaching the flexible flood barrier system at the attachment points.

A cementitious composite for in-situ hydration includes a structure layer having a first side and an opposing second side, a cementitious material disposed within the structure layer, a sealing layer disposed along and coupled to the first side of the structure layer, and a containment layer disposed along the opposing second side of the structure layer. The structure layer has an intersection at the sealing layer and the containment layer that is at least partially fiberless. The cementitious material includes a plurality of cementitious particles. The containment layer is configured to prevent the plurality of cementitious particles from migrating out of the structure layer.

In an exemplary embodiment, a system for making tied block mat with a border includes a mold having an array of mold cavities; and a hopper that receives a hardenable paste and is spaced from the mold to receive a sheet of mesh material therebetween, the hopper having an opening for depositing the hardenable paste into selected mold cavities, the hopper forming a filling zone with the mold wherein the hardenable paste flows through the opening into the selected mold cavities, and a blocked zone where the hardenable paste is prevented from entering other selected mold cavities of the mold; whereby the tied block mat is formed wherein the hardenable paste in the selected mold cavities becomes embedded in the sheet of mesh material in the filling zone, and a border is formed in the blocked zone where the hardenable paste is blocked from entering the other selected mold cavities.

A repair system for existing aquatic walls including seawalls, channel walls other water barriers includes a laminate sheet constructed of a fiber reinforced polymer that is adhered along its perimeter and bolted to the surface of an aquatic wall. An annular gap is formed between the adhered/bolted laminate sheet and the aquatic wall, and that gap is injected with an exothermic bonder that connects the laminate sheet to the aquatic wall.

A method of manufacture of geotechnical profiles where thermoplastic material including one or more of polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyethylene or polythene (PE), acrylonitrile butadiene styrene (ABS), or polypropylene (PP), is plasticized in an extruder, pressed through a cross die unit and internal reinforcing profiles in the form of flat bars, arched elements, angled elements, ribbed profiles or sections of any geometry are entered at least in selected cross-section areas of the geotechnical profile where the internal reinforcing profiles are created from one or more of continuous or chopped fiber produced simultaneously or as part of a separate production process.