A cementitious composite includes a cementitious mixture of cementitious materials and non-cementitious materials. Prior to the in-situ hydration, V.sub.b=M.sub.c/.sub.c.Math.(1+F.sub.v)+.sub.i.sup.n(M.sub.nc.sub.i/.sub.nc.sub.i) where V.sub.b is the bulk volume of the cementitious mixture per unit area of the cementitious composite, M.sub.c is a mass of the cementitious materials of the cementitious mixture per unit area of the cementitious composite, .sub.c is a density of the cementitious materials of the cementitious mixture, M.sub.nc.sub.i is a mass of each constituent type of the non-cementitious materials of the cementitious mixture per unit area of the cementitious composite, .sub.nc.sub.i is a density of each constituent type of the non-cementitious materials of the cementitious mixture, and F.sub.v is a ratio of the volume of the voids within the cementitious mixture relative to the volume of the cementitious materials of the cementitious mixture per unit area of the cementitious composite. F.sub.v is between 0.64 and 1.35.

According to aspects of the present disclosure, a composition is disclosed, which can be utilized to construct a retention structure, e.g., for use with hardscape such as pavers, tile, stone, and other building materials. The composition is a mixture of a cement component (e.g., Portland cement), a sand component, a gravel component, a silica fume component, and fiber component, the above-components mixed in varying ratios. When the cement component, sand component, gravel component, silica fume component, and fiber component are mixed in an effective amount, combined with a water component, and applied against a hardscape, the composition, once cured, defines a retention structure that abuts to, but is not adhered to the hardscape.

A process for making a composite pavement structure comprising primed glass aggregate particles and a polymeric binder composition is disclosed. Systems and methods are also disclosed for the priming of glass aggregate particles. In one embodiment, the glass aggregate particles range from about 0.1 to about 0.5 inch in diameter and are exposed to a coupling agent in solution, for example an aqueous aminosilane solution, in an amount of about 1 to about 10 parts by weight of solution based on 100 parts by weight of the glass aggregate particles wherein the aqueous solution contains about 0.01 to about 5.0 parts by weight coupling agent based on 100 parts by weight of solution. After exposure, the primer is allowed to react and bond with the glass aggregate particles for a predetermined time period to provide primed glass particles, for example silylated glass particles, which are then dried. Once the primed glass and polymeric binder composition are mixed, they are allowed react and bond to provide a composite pavement structure.

Some examples include a turbine component comprising: a ceramic composite (CMC) having a matrix; and a watertight coating chemically miscible and/or mutually soluble with/in the CMC because particles and/or fibers which are composed of an identical or chemically matching, but at least chemically compatible. At least part of the watertight coating is incorporated in the matrix of the CMC, the matching and compatible material comprising at least one of: aluminum oxide, yttrium aluminum garnet (YAG), and yttrium-stabilized zirconium oxide (YSZ).

A calcium sulfoaluminate-based concrete with a permeability of less than 1000 Coulombs. Rapid-setting low chloride-ion permeability calcium sulfoaluminate (CSA) cements and concretes include CSA and a suitable polymer such as a sol-gel derived, organic-inorganic, silica based hybrid coating solutions of polystyrene-butylacrylate polymers containing active silanol groups protected by hydroxyl groups containing polyalcohol, or other polymers. Such polymers may be added as powders or as liquid in the finish mill. Other rapid-setting low chloride-ion permeability (CSA) cements and concretes include CSA with selected particle size distributions, and do not require use of any polymer. These CSA cements and concretes have low chloride-ion permeability, high early strength, fast setting times, low-shrinkage, and high freeze-thaw resistance.

A method for improving the air and/or water barrier performance of a building panel is disclosed. The building panel may be a gypsum board or cement board. In particular, the board may have improved resistance to bulk water penetration or permeation while maintaining breathability with respect to water vapor.

Beneficial use structures are disclosed that include coal combustion residuals (CCR) mixed with water and a binder to form a structural material, and adapted to be compacted for use in the formation of the beneficial use structure. Various structures having beneficial uses are described, including compressed air storage facilities and a pumped hydroelectric facility, including such a facility adapted for use with a lock system of a waterway.

A method for producing a composite insulating mineral block, includes providing a mineral masonry block including at least one cell with walls having a water absorption rate of less than 5 g/(m.sup.2.Math.s) at 10 minutes, and filling the cell with a mineral cement foam, wherein a cement used to produce the mineral cement foam has an aluminum oxide content of less than 20% by weight of the cement.

Beneficial use structures are disclosed that include coal combustion residuals (CCR) mixed with water and a binder to form a structural material and adapted to be compacted for use in the formation of the beneficial use structure. Various structures having beneficial uses described, including survival bunkers, composting pits, mine reclamation encapsulation and carbon sequestration facilities, water storage facilities, compressed air storage facilities, carbon sequestration/mineral carbonation facilities and a pumped hydroelectric facility adapted for use with a lock system of a waterway.

A waterproofing and dual-nano-engineering method and a resultant composition that includes a base sealer dual-nano-modified to alter the surface chemistry of a cementitious substrate and provide the formation of a rough nano/micro-scale hierarchical structure resulting from the introduction of the plurality of nanomaterials. The dual-nano-engineered sealer refines the microstructure of the cementitious substrate while enhancing its hydrophobicity with a water contact angle of at least 120 and increasing its resistance to salt-scaling and UV aging.