A grout composition includes a grout binder comprising calcium sulfate, the grout binder constituting from about 25.0 weight percent to about 99.0 weight percent of the grout composition, and at least one thermal conductivity additive comprising graphite. A grout formed from the grout composition has a thermal conductivity greater than about 1.0 W/m.Math.K. Related grout slurries formed from the grout composition, grouts, and methods of grouting a wellbore are also disclosed.

Embodiments of the present disclosure related carbon-based structural unit (CSU). The CSUs include a cured composition. The cured composition includes about 1% to about 80% pyrolysis char (PC), about 0.1% to about 35% coal deposits, extracts, and residual tar (CDER) materials, and about 0% to about 99% pitch material. The CDER material includes a tetralin insoluble (TI), a deposit (De), a distillation residue (DR), and a residue (Re). A method of making a composition includes extracting a coal extraction residue (CER) from coal; fabricating pyrolysis char (PC) and a coal deposits, extracts, and residual tar (CDER) material from the CER; sieving and milling the PC into milled PC; and mixing the pyrolysis char (PC) and the CDER material to form a composition.

A grout composition includes a grout binder comprising calcium sulfate, the grout binder constituting from about 25.0 weight percent to about 99.0 weight percent of the grout composition, and at least one thermal conductivity additive comprising graphite. A grout formed from the grout composition has a thermal conductivity greater than about 1.0 W/m.Math.K. Related grout slurries formed from the grout composition, grouts, and methods of grouting a wellbore are also disclosed.

The present application relates to the field of building insulation materials, and specifically discloses a coating fluid, a non-combustible insulation board and a preparation method therefor. The coating fluid comprises 30-60 parts of flame retardant, 20-40 parts of styrene-acrylic emulsion, 10-25 parts of arabic gum, 12-18 parts of titanium dioxide and 150-200 parts of water. The non-combustible insulation board is prepared from EPS particles, a grouting material and the coating fluid of the present application, the weight ratio of the coating fluid to the EPS particles to the grouting material is 0.6:(0.8-1.5):(12-20), and the non-combustible insulation board has the heat conductivity coefficient of below 0.045 w/m.Math.k, the combustion grade of above A2 and the compressive strength of 0.12-0.18 MPa. The preparation method for a non-combustible insulation board is simple in operation, easy in control and suitable for mass production.

The present invention provides a bidirectional energy-transfer system comprising: a thermally and/or electrically conductive concrete, disposed in a structural object; a location of energy supply or demand that is physically isolated from, but in thermodynamic and/or electromagnetic communication with, the thermally and/or electrically conductive concrete; and a means of transferring energy between the structural object and the location of energy supply or demand. The system can be a single node in a neural network. The thermally and/or electrically conductive concrete includes a conductive, shock-absorbing material, such as graphite. Preferred compositions are disclosed for the thermally and/or electrically conductive concrete. The bidirectional energy-transfer system may be present in a solar-energy collection system, a grade beam, an indoor radiant flooring system, a structural wall or ceiling, a bridge, a roadway, a driveway, a parking lot, a commercial aviation runway, a military runway, a grain silo, or pavers, for example.

A rapidly-expanding and -curing geopolymer formulation includes a liquid aqueous phase with silicate, aluminate and/or silico-aluminate precursors, an inorganic base, a monosaccharide and/or disaccharide, and a water-soluble peroxy compound. The saccharide and peroxy compound react spontaneously and rapidly in strongly alkaline conditions, producing an expanding gas and exothermic heat of reaction that drives at least an initial cure of the geopolymer formulation. The resulting foamed geopolymer formulation can be used in a variety of building and construction applications, as well as and others.

A rapidly-expanding and -curing geopolymer formulation includes a liquid aqueous phase with silicate, aluminate and/or silico-aluminate precursors, an inorganic base, a monosaccharide and/or disaccharide, and a water-soluble peroxy compound. The saccharide and peroxy compound react spontaneously and rapidly in strongly alkaline conditions, producing an expanding gas and exothermic heat of reaction that drives at least an initial cure of the geopolymer formulation. The resulting foamed geopolymer formulation can be used in a variety of building and construction applications, as well as and others.

A lightweight cement composition contains a curable component in an amount of 15 to 25 wt. %, a fine aggregate (FA) in an amount of 40 to 45 wt. %, a coarse aggregate (CA) in an amount of 3 to 30 wt. %, each wt. % based on a total weight of the lightweight cement composition. The CA contains a form-stabilized phase change material (FS-PCM) composite having a core of scoria-polyethylene glycol (SCP) composite and a cement shell. A cured lightweight cement specimen, and a method of making the cured lightweight cement specimen.

A multifunctional end cap catalyst is provided, comprising a multi-wall carbon nanotube with a multi-metal catalyst at the end cap. The catalyst contributes preferentially to growing a multi-wall carbon nanotube through a methane pyrolysis process at a lower temperature, and then infuses the nanotube into a host material, such as concrete, asphalt, polymer, or steel, improving functional parameters including thermal conductivity, electrical conductivity, wettability, flexural strength, tensile strength, or interfacial bonding strength. The catalyst can also increase the host material's decrease phonon scattering or interfacial resistance, and lower the final defect density of the multi-wall carbon nanotube. The multifunctional end cap catalyst can be composed of various metals, including copper, nickel, and manganese, and can achieve specific functional states, such as oxidized or functionalized metal states, without increasing the final defect density.

A plant enhanced concrete dry mix comprising (WAV) at least 137.5 parts Kenaf based plant material, derived from Hibiscus cannabinus, which is surface treated with sodium silicate (water glass); not more than 122.2 parts sand and not more than 189.4 parts cement. The plant material may be Kenaf branches that contain a soft core and/or heart surrounded by fibrous material.