The present disclosure relates to a system for installing anti-scouring material on a premanufactured marine foundation, said foundation being transportable in a self-floating manner to its final position on the seabed; comprising: at least one device for housing the anti- scouring material: at least one device for securing the anti-scouring material and/or said housing device to the marine foundation; and wherein the housing device and the securing device are installable on the marine foundation prior to the marine foundation being installed in its final position.

The present disclosure relates to a system for installing anti-scouring material on a premanufactured marine foundation, said foundation being transportable in a self-floating manner to its final position on the seabed; comprising: at least one device for housing the anti- scouring material: at least one device for securing the anti-scouring material and/or said housing device to the marine foundation; and wherein the housing device and the securing device are installable on the marine foundation prior to the marine foundation being installed in its final position.

Improved containment mats and systems of containment mats may include multiple adjoining mats with a top surface and a bottom surface. The multiple mats may provide a modular structural mat system that may be installed at a drill site, with multiple mats placed adjacent to each other with a lap joint connecting adjacent mats. A geotextile may be used to cover the lap joints and a coating applied to the geotextile. Such a system may provide containment of potential spills, a reliable working surface for drilling operations, and relatively fast and less expensive installation.

A containment material for a containment system to provide protection against the diffusion of contaminants in a containment area. A structured felt geotextile surface layer is joined with a geomembrane barrier layer to form a lamination. The geomembrane barrier layer is substantially impervious to liquid diffusion. The structured felt geotextile surface layer comprises a needle-punched, non-woven felt with an upper surface structured to have a surface pattern of peaks and valleys. A containment system is formed from a plurality of strips of containment material joined by liquid-impervious bonds to provide coverage to the containment area. A process for forming a containment material comprises providing a structured felt geotextile layer formed with first and second needling operations to produce a surface pattern and a liquid impervious geomembrane barrier layer and joining the layers to form a lamination.

A heterophasic propylene polymerization material containing a propylene homopolymer component or a specific propylene copolymer component, and a specific ethylene--olefin copolymer component, in which (i) the amount of the xylene-soluble component is 40% by weight or more, (ii) the limiting viscosity [].sub.C X I S of the xylene-insoluble component is 1.50 dL/g or more, (iii) the ratio of the limiting viscosity [].sub.C X S of the xylene-soluble component to the limiting viscosity [].sub.C X I S of the xylene-insoluble component is 1.5 or less, and (iv) the content of monomer units derived from ethylene and -olefins having 4 to 12 carbon atoms in the xylene-insoluble component is 6% by weight or more.

To prevent lateral soil migration beneath a slab foundation lifted over a ground surface, a plurality of skirts are placed in the ground surface to define a foundation perimeter. A slab foundation is formed within an interior space of the foundation perimeter. The plurality of skirts are secured to the slab foundation via one or more anchors protruding from a portion of each skirt toward the interior space of the foundation perimeter. The slab foundation is raised above the ground surface to create a void that permits vertical expansion of soil without subjecting the slab foundation varying forces associated with the dynamic nature of the soil. The plurality of skirts are raised along with the slab foundation and operate as a barrier that circumscribes the void space and resists lateral soil migration into the void from the exterior of the foundation perimeter.

To prevent lateral soil migration beneath a slab foundation lifted over a ground surface, a plurality of skirts are placed in the ground surface to define a foundation perimeter. A slab foundation is formed within an interior space of the foundation perimeter. The plurality of skirts are secured to the slab foundation via one or more anchors protruding from a portion of each skirt toward the interior space of the foundation perimeter. The slab foundation is raised above the ground surface to create a void that permits vertical expansion of soil without subjecting the slab foundation varying forces associated with the dynamic nature of the soil. The plurality of skirts are raised along with the slab foundation and operate as a barrier that circumscribes the void space and resists lateral soil migration into the void from the exterior of the foundation perimeter.

A foundation waterproofing assembly for cracked foundations includes a panel that is flexible and water resistant. A plurality of slats is coupled to and extends substantially perpendicularly from the panel. The slats are positioned in parallel on the panel and extend from a top to a bottom of the panel. The panel is configured to bend into a curved configuration such that the panel is insertable into a recess adjoining at least one crack in a foundation. The panel is configured to direct water entering the recess from the at least one crack to a point below a floor abutting the foundation, such that water is prevented from penetrating to the interior of the structure.

Disclosed is a waterproofing membrane that comprises a carrier sheet, a pressure sensitive adhesive layer on one surface of the carrier sheet, and a protective coating layer on the adhesive layer. The protective coating layer comprises polyvinyl acetate (PVAc). The protective coating layer protects the membrane against weather exposure, tolerates foot traffic and strongly adheres to concrete cast against it.

A method for determining breakthrough time of anti-seepage liners in a landfill, includes (a) detecting a leachate sample of the landfill to determine the initial concentration C.sub.0 of pollutants, and monitoring the leachate head h of the landfill; (b) determining the pollution-causing concentration C.sub.A of the pollutants according to functional orientation of local groundwater of the landfill; (c) determining, related parameters of the anti-seepage liners including the thickness z of the anti-seepage liners, the permeability coefficient k of the liners, and the porosity n of the material of the liners, and determining the related parameters of pollutant migration including the effective diffusion coefficient D.sub.a* and the mechanical dispersion coefficient D.sub.m of the pollutants in the anti-seepage liners, and the adsorption retardation factor R.sub.d of the anti-seepage liners on the pollutants; and (d) calculating the breakthrough time t of the anti-seepage liners according to a formula,

[00001]$t=\frac{{\mathrm{nR}}_d.Math.z^2}{\left(h+z\right).Math.k}.Math.\left(\left({a?\left(\frac{C_0}{C_A}\right)}^b\right).Math.\ln ?\left(\frac{\left(h+z\right).Math.k}{n?\left(D_a^{*}+D_m\right)}\right)+c\right).$