▎ 摘　　要

NOVELTY - Composite material comprises a closed cell polyurethane matrix portion and further comprising: A2-23-025-B1/diph-diisocyanate; B-23-025-B1H/polyol resin; and a particulate portion homogeneously distributed and suspended in the matrix portion. The particulate portion is selected from the group consisting of HT fiber, fiberglass, silica (SiO2), and reclaimed concrete aggregate. The composite material has a compressive strength between 14-70 megapascals (MPa). The composite material has a tensile strength between 5.5-70 MPa. The composite material has a shear strength between 7.0-55 MPa. The composite material has a density between 0.15-1.2 g/cc. USE - Composite material for repairing a pothole and forming a structural material (all claimed). ADVANTAGE - The composite material has a matrix phase and at least one dispersed second phase. The matrix phase is a formulation capable of rapidly polymerizing on site without the application of heat to provide relatively lightweight structural materials but with compressive strength, toughness, and wear resistance comparable to structural materials such as concrete, and steel. The presence of the dispersed second phase typically allows for the composite material to achieve enhanced physical properties, such as compressive strength, tensile strength, and shear strength, while remaining relatively light weight and often retaining the desirable property of being able to hold nails. The suspended second phase material is typically dispersed homogeneously so that the composite material has isotropic physical and chemical properties. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. method of repairing a pothole, which involves: a) mixing A2-23-025-B1/diph-diisocyanate and B-23-025-B1H/polyol resin to yield an admixture; b) dispersing a particulate phase in the admixture to yield a homogeneous composition; c) filling a pothole with the homogeneous composition, where the pothole is defined by an outer boundary; d) covering at least two sides of the pothole to limit expansion of the homogeneous composition to within the outer boundary; e) allowing expansion of the homogeneous composition to infiltrate cracks and voids in outer boundary; and f) curing the homogeneous composition to yield a solid structural material filling the pothole; 2. method of pouring a body, which involves: i) mixing an isocyanate, a polyol, and a catalyst to yield an admixture; ii) dispersing a particulate phase in the admixture to yield a homogeneous composition; iii) pouring the homogeneous composition into a preform; iv) capping the preform to prevent expansion of the homogeneous composition; and v) curing the homogeneous composition to yield a polymeric composite body. 3. method for forming a structural material, which involves: a) providing a formulation consisting of at least one isocyanate, a polyol, and a catalyst contained in a mold having a pressure rating of at least 0.4 MPa; b) sealing the mold within about 1 to 10 minutes; c) polymerizing the formulation in an exothermic and adiabatic manner until complete as evidenced by no further generation of heat.