There are provided gypsum panels, sheets and multi-layer sheets as well as methods of preparation thereof. For example, there are provided cellulose filament-reinforced gypsum panels, sheets and multi-layer sheets and methods of preparation thereof. For example, in such gypsum panels, sheets and multi-layer sheets gypsum is bound with cellulose filaments to strengthen the gypsum panels, sheets and multi-layer sheets. The cellulose filament-reinforced gypsum panel can be, for example, a core comprising a honeycomb or corrugated structure. There are also provided aqueous suspensions comprising cellulose filaments and CaSO.sub.4.2H.sub.2O.

There are provided gypsum panels, sheets and multi-layer sheets as well as methods of preparation thereof. For example, there are provided cellulose filament-reinforced gypsum panels, sheets and multi-layer sheets and methods of preparation thereof. For example, in such gypsum panels, sheets and multi-layer sheets gypsum is bound with cellulose filaments to strengthen the gypsum panels, sheets and multi-layer sheets. The cellulose filament-reinforced gypsum panel can be, for example, a core comprising a honeycomb or corrugated structure. There are also provided aqueous suspensions comprising cellulose filaments and CaSO.sub.4.2H.sub.2O.

Reinforcing fibers, such as aromatic polyamide (aramid) fibers, are treated by coating with or embedding in a binder such as a Fischer-Tropsch wax. The treated fibers are divided into suitably-sized units, which are added to bitumen, aggregate and other ingredients in an asphalt cement concrete mix. The units shed fibers into the mix during the manufacturing process so that the fibers are distributed fairly evenly throughout the asphalt mixture. The binder may also impart beneficial qualities to the finished asphalt concrete.

Reinforcing fibers, such as aromatic polyamide (aramid) fibers, are treated by coating with or embedding in a binder such as a Fischer-Tropsch wax. The treated fibers are divided into suitably-sized units, which are added to bitumen, aggregate and other ingredients in an asphalt cement concrete mix. The units shed fibers into the mix during the manufacturing process so that the fibers are distributed fairly evenly throughout the asphalt mixture. The binder may also impart beneficial qualities to the finished asphalt concrete.

A printable concrete composition is made from the combination of a solid mix, water, and various liquid admixtures. The solid mix includes quantities of aggregate, coarse sand, and fine sand in an approximately 1:1:1 critical aggregate ratio, as well as a binding agent present in a critical binding ratio. Solid admixtures include clay, fly ash, and silica fume. This solid mix may be prepackaged for later combination with the water and liquid admixtures. The solid mix combines with water at a critical water ratio ranging from approximately 0.44 to approximately 0.50. Liquid admixtures include flow control, plasticizer, and shrinkage-reducing admixtures. Once the printable concrete composition is prepared, a user may print a structure without further modification of the composition. Users may embed mesh between layers of the printable concrete composition to reinforce or stabilize the structure.

Provided are cementitious formulations including nano crystalline cellulose (NCC).

Provided are cementitious formulations including nano crystalline cellulose (NCC).

The invention described is a reinforced refractory fire containment wall panel, the panel cast from a reinforced refractory composition. The refractory composition contains cement, a binder, a matrix material comprising 300 series stainless steel fibers and organic fibers, and a refractory aggregate comprising aluminum oxide, calcium oxide, iron oxide and silicon dioxide or a combination thereof, and a reinforcing material. The invention also describes methods of making the reinforced refractory fire containment wall panel.

The invention described is a reinforced refractory fire containment wall panel, the panel cast from a reinforced refractory composition. The refractory composition contains cement, a binder, a matrix material comprising 300 series stainless steel fibers and organic fibers, and a refractory aggregate comprising aluminum oxide, calcium oxide, iron oxide and silicon dioxide or a combination thereof, and a reinforcing material. The invention also describes methods of making the reinforced refractory fire containment wall panel.

A hybrid additive for use in construction materials such as asphalt and concrete is disclosed. The additive includes pellets formed of a plastic or polymer material, and one or more of fibers, pozzolans, nano-carbon tubes, glass, recycled asphalt shingles (RAS), liquid anti-strip, hydrated lime, rejuvenators, cementitious material, and ground tire rubber. Also disclosed are hybrid composite materials useful as paving and building materials, and methods of making the same. The hybrid additives were found to maintain the positive performance aspects of typical asphalt and concrete mixtures, while improving the performance of the mixtures by increasing bonding and strength within the mixtureand therefore increasing useable life and lowering costs.