A shear connector for use with insulated concrete panels. The shear connector comprises an elongated core member that includes a first end and a second end, and a flanged end-piece removably secured to one of the first end or the second end of the core member. At least a portion of the flanged end-piece includes a maximum diameter that is larger than a maximum diameter of the core member. The shear connector is configured to transfer shear forces.

A formulation for an acoustically transparent coating for use on an acoustical substrate comprising a water dispersible binder and relatively large filler particles, and characterized by a high pigment to volume concentration, high viscosity, high shear thinning, and fast drying to enable the formulation to be sprayed in droplets that retain their identity when in mutual contact and in a dry coating can be efficiently sanded flat.

Prefabricated building panels combine new and unexpected element dimensions and materials with the effect of reducing overall weight and depth while simultaneously improving panel performance such as thermal insulation. As compared to former panels, prefabricated building panels according to exemplary embodiments of the invention generally include thinner concrete slabs, wider separations between concrete and support framing, and new material choices for anchors connecting slabs with framing. Exemplary panels are compliant with energy codes such as the latest ASHRAE and IECC.

Disclosed is a sand aerated concrete panel pre-embedded with a wire box and a wire conduit and its preparation method. The concrete panel includes a sand aerated concrete panel, a steel bar mesh cage, a wire box and a wire conduit. The steel bar mesh cage includes a plurality of longitudinal main steel bars, a plurality of transverse auxiliary steel bars and a plurality of connecting iron pieces; the wire box and the wire conduit are fixed on the steel bar mesh cage; and the steel bar mesh cage, the wire box and the wire conduit are poured in the sand aerated concrete panel. The disclosure solves the problems of complicated procedures, high cost, environmental pollution caused by dust and noise in the prior art, avoids the potential quality hazards of the panels and wall structures caused by on-site slotting, reduces labor force, intensity and cost.

A formulation for an acoustically transparent coating for use on an acoustical substrate comprising a water dispersible binder and relatively large filler particles, and characterized by a high pigment to volume concentration, high viscosity, high shear thinning, and fast drying to enable the formulation to be sprayed in droplets that retain their identity when in mutual contact and in a dry coating can be efficiently sanded flat.

A shear connector for use with insulated concrete panels. The shear connector comprises an elongated core member that includes a first end and a second end, and a flanged end-piece removably secured to one of the first end or the second end of the core member. At least a portion of the flanged end-piece includes a maximum diameter that is larger than a maximum diameter of the core member. The shear connector is configured to transfer shear forces.

Disclosed is a fire-proof thermal-insulation board of aerated concrete of B02-level lightweight autoclaved sand and its preparation method. Components of the thermal-insulation board are quartz sand, lime, cement, gypsum, aluminum powder, and foam stabilizer, weight percentages of the components are: 56%60% of the quartz sand, 8%11% of the lime, 20%30% of the cement, 2%4% of the gypsum, 0.24%0.26% of the aluminum powder, and 0.02%0.03% of the foam stabilizer. The fire-proof thermal-insulation board is made of an inorganic non-metallic material with lightweight, non-inflammable property and good thermal-insulation performance. The present disclosure well solves the thermal bridge problem of external wall of the building, and has A1-level fire-proof performance and good durability with the same service life as the building. The present disclosure overcomes low product strength, and inconvenience in transportation and construction in the prior art, reduces types of admixture used in the manufacturing process, and reduces the manufacturing cost.

An insulated concrete panel comprising an insulation layer having one or more openings extending therethrough, a first concrete layer adjacent to a first surface of the insulation layer, a second concrete layer adjacent to a second surface of the insulation layer, and a wall tie received within one or more of the openings. The wall tie includes a central section received within the one or more openings of the insulation layer, a first concrete engaging at least partially embedded within the first concrete layer, and a second concrete engaging section embedded within the second concrete layer. The second concrete engaging section has a maximum width that is larger than a maximum width of the central section. The central section of the wall tie is configured to transfer shear forces and resist delamination forces between the first and second concrete layers.

A method to make an ultra-stable structural laminate of a cementitious material with a nano-molecular veneer and a foam component catalytically reacted into an expanded closed cell foam having a thickness from .sup.th inch to 8 inches, a density from 1.5 pounds/cubic foot to 3 pounds/cubic foot that inter-engages the cementitious material forming a matrix creating the ultra-stable structural laminate with fire resistance; a lateral nail pull strength from 44 pounds to 300 pounds of force; an insulation R value from 1 to 40; a resistance to seismic impact for earthquakes over 3.1 on the Richter Scale; a break point from 7 lbs/inch to 100 lbs/inch; and a resistance to wind shear equivalent to a 15 mph downburst.

An ultrastable cementitious material with nano-molecular veneer makes a cementitious material by blending 29 wt % to 40 wt % of a magnesium oxide dry powder containing 80 wt % to 98 wt % of magnesium oxide based on a final total weight of the cementitious material, with 14 wt % to 18 wt % of a magnesium chloride dissolved in water and reacting to form a liquid suspension, mixing from 2 to 10 minutes, adding a phosphorus-containing material, and allowing the liquid suspension to react into an amorphous phase cementitious material, wherein a portion of the amorphous phase cementitious material grows a plurality of crystals. The plurality of crystals are encapsulated by the amorphous phase cementitious material forming a nano-molecular veneer. A process to make the ultrastable cementitious material. A tile backer board incorporating the ultrastable cementitious material and a process for making the tile backer board.