Drive-over berm systems that protect raised sections of protective containment liners from truck and heavy equipment damage are disclosed. A ramped outer berm abuts an elevated portion of the liner, which may be raised to a desired height by an insert positioned under the liner. A ramped inner berm may about the elevated portion of the liner, and a connector plate may be used to secure the outer and inner ramped berms together. The height of the raised portion of the liner is selected to provide the desired sump capacity of the containment area. The inner berm and/or outer berm may be provided in sections that can be connected end-to-end.

A tape mounting system for a foundation covering having an adhesion strip including a porous substrate material. The porous substrate material having a wall adhesion side and a covering adhesion side facing opposite the wall adhesion side. An instant bond adhesive portion is included on the wall adhesion side and carries a first instant bond adhesive. An adhesive absorbing portion is included on the wall adhesion side that receives and absorbs an adhesive bead applied to a foundation wall. A second instant bond adhesive is disposed on the covering adhesion side for engaging a foundation wall covering. The instant bond adhesive on the wall adhesion side secures the adhesion strip to the foundation wall until the adhesive bead is cured to carry the foundation wall covering so that an air and moisture tight seal is formed between the foundation wall, the adhesion strip, and the covering material.

An electrically conductive geosynthetic clay liner incorporating an electrically conductive textile graphene.

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.

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

A system and method are provided for a protective barrier liner system on near vertical to vertical slopes of a waste facility. The system includes anchors installed into the side walls of the waste facility, a drainage network including geo-composite drain strips, steel reinforcement, a sprayed water proof membrane, and a pneumatically applied final protective concrete cap layer. The anchors may include soil nails launched from a pneumatic launching device or anchors placed in drilled bores then reinforced with grout. The water proof membrane may be installed between an initial layer of concrete and the final layer of concrete to protect the membrane from damage by facility operations. The steel reinforcement may include wire mesh, whalers, bearing plates, shear studs secured to the bearing plates, and combinations thereof. The system can be constructed in progressive bands spliced together enabling construction of the complete system over a longer period of time.

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.

The permeability of barrier layers formed from sodium bentonite clay may be significantly and unpredictably impacted upon contacting various ionic substances. Modifying agents may be admixed with sodium bentonite clay to lessen the impacts resulting from its contact with an ionic substance. Suitable modifying agents may comprise an anionic substance selected from the group consisting of a diutan, a polymer containing a 2-acrylamido-2-methylpropanesulfonic acid monomer, any salt thereof, and any combination thereof. Methods for forming a barrier layer may comprise: providing a barrier material comprising sodium bentonite clay and a modifying agent admixed with the sodium bentonite clay, the modifying agent comprising an anionic substance selected from the group consisting of a diutan, a polymer containing a 2-acrylamido-2-methylpropanesulfonic acid monomer, any salt thereof, and any combination thereof; and forming a barrier layer comprising the barrier material.