Abstract: An insulated wall construction having a substrate defining a wall surface, compressible insulation board positioned over the wall surface of the substrate and a specifically designed clip and fastener for securing the insulation board to the substrate. The clip includes a generally flat plate for providing a bearing surface against the compressible insulation board and a plurality of prongs extending outwardly from the plate for partially penetrating the insulation board for securing the clip to the insulation board. An elongate fastener passes through a central aperture in the clip and is of greater length than the thickness of the insulation board for penetrating through the insulation board and into the substrate for securing the insulation board to the substrate, while being restrained by the clip from undesired compression of the insulation board.

Abstract: A cement mix suitable for mixing with water to form a glass reinforced cementitious material for use in high tensile strength applications such as surface bonding of concrete blocks or the like or in the formation of concrete products and characterized by a resistance to degradation of the glass reinforcement by the alkaline environment of the cementitious material. The cement mix comprises a dry mixture of an inorganic cementitious binder containing at least one reactive alkali compound, glass reinforcement fibers, and a water soluble salt of a metal selected from the group consisting of barium, lithium, and zinc.

Abstract: A glass reinforced cement composition containing a scavenger material as an inhibitor to prevent or greatly reduce attack and degradation of the glass reinforcement by the alkali content of the inorganic alkaline cement binder. The scavenger is a finely divided alkali-reactive material which contains silica as the major constituent thereof, and which has a reactivity with the alkali content of the binder substantially greater than the reactivity of the glass reinforcement therewith whereby the alkali content of the binder reacts with the scavenger in preference to reacting with the glass reinforcement.