A composite material includes, in an exemplary embodiment a polyurethane foam and a plurality of inorganic particles dispersed therein. The polyurethane foam is formed from a reaction mixture that includes a first polyether polyol having a first molecular weight and a functionality of about 3 or less, a second polyether polyol having a second molecular weight less than the first molecular weight and a functionality of greater than about 3, and at least one isocyanate. The ratio of an amount of the first polyol in the reaction mixture to an amount of the second polyol in the reaction mixture is between about 1:1 to about 5:1.

A composite material includes, in an exemplary embodiment a polyurethane foam and a plurality of inorganic particles dispersed therein. The polyurethane foam is formed from a reaction mixture that includes a first polyether polyol having a first molecular weight and a functionality of about 3 or less, a second polyether polyol having a second molecular weight less than the first molecular weight and a functionality of greater than about 3, and at least one isocyanate. The ratio of an amount of the first polyol in the reaction mixture to an amount of the second polyol in the reaction mixture is between about 1:1 to about 5:1.

A hydraulic binder includes in mass percent from 20 to 82% of a Portland cement the particles of which have a D.sub.50 comprised from 2 m to 11 m; from 15 to 56% of a non-pozzolanic mineral addition A1, the particles of which have a D.sub.50 from 1 to 150 m and selected from among limestone additions, siliceous additions, siliceous limestone mineral additions, calcined shales, zeolites, burnt plant ashes, and mixtures thereof; from 4 to 30% of pozzolanic mineral addition A2, the particles of which have a D.sub.50 from 1 to 150 m; a sum of the percentages of the Portland cement, the non-pozzolanic mineral addition A1 and the pozzolanic mineral addition A2 being comprised from 90 to 100%.

This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.

This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.

The disclosure provides a basalt fiber reinforced concrete using an excavated material as aggregate, and a method for manufacturing same. The basalt fiber reinforced concrete is manufactured from ingredients according to a mix proportion as follows: 100 parts of cement, 300 parts of coarse aggregate, 226.4 parts of fine aggregate, 40 parts of water, 1 part of a water reducing agent, and chopped basalt fibers, where gneiss is crushed to manufacture the coarse aggregate and the fine aggregate, and is sieved to obtain first coarse aggregate with a grain size of 5 mm to 10 mm, second coarse aggregate with a grain size of 10 mm to 20 mm, and the fine aggregate with a grain size of 0.37 mm to 0.52 mm; in the coarse aggregate, an ingredient mix proportion of the first coarse aggregate to the second coarse aggregate is 1:1; and a volume fraction of the chopped basalt fibers is 0% to 0.5%, and an optimal volume fraction is 0.2%. Through the disclosure, an optimal fiber proportion suitable for lining structures on engineering sites can be determined.

In one embodiment, a geopolymer formulation for a building material comprises sand, ground granulated blast furnace slag (GGBFS), fly ash, sodium tetraborate, boric acid, zeolite, sodium caseinate, and SC-9. Optionally, the formulation also comprises additional constituents like sodium metasilicate, sodium hydroxide, magnesium oxide, hemp, basalt fibers, aggregates, and fillers. Building materials manufactured from the geopolymer formulation have high compressive strength, flexural strength, tensile strength, impact resistance, and thermal resistance.

In one embodiment, a geopolymer formulation for a building material comprises sand, ground granulated blast furnace slag (GGBFS), fly ash, sodium tetraborate, boric acid, zeolite, sodium caseinate, and SC-9. Optionally, the formulation also comprises additional constituents like sodium metasilicate, sodium hydroxide, magnesium oxide, hemp, basalt fibers, aggregates, and fillers. Building materials manufactured from the geopolymer formulation have high compressive strength, flexural strength, tensile strength, impact resistance, and thermal resistance.

Provided is a concrete reinforcing composite material that is impregnated with a thermoplastic resin having excellent alkali resistance and handleability. In a concrete reinforcing composite material 10, a core material 12 is formed from a fiber bundle of reinforcing fibers. The core material 12 is covered with a coating layer 14 made of a thermoplastic resin. The core material 12 is impregnated with the thermoplastic resin. The thickness of the coating layer 14 is 84 m or more. The fiber volume content V.sub.f of the core material 12 is 60% or more.

In one embodiment, a building material derived from a geopolymer formulation comprises sand, ground granulated blast furnace slag (GGBFS), fly ash, sodium tetraborate, boric acid, zeolite, sodium caseinate, and SC-9. Optionally, the formulation also comprises additional constituents like sodium metasilicate, sodium hydroxide, magnesium oxide, hemp, basalt fibers, aggregates, and fillers. The building materials have high compressive strength, flexural strength, tensile strength, impact resistance, and thermal resistance.