Abstract: A wellbore servicing method comprises converting a water into an electrochemically activated water, preparing a wellbore servicing composition comprising the electrochemically activated water, and placing the wellbore servicing composition in a wellbore. Also, cement composition comprises a cement and an electrochemically activated water.

Abstract: A method of producing a sheet-form material having an exposed solid surface comprises pre-mixing cement with at least one pozzolan to provide a cement/pozzolan mixture with a high pozzolan to cement ratio, adding to the cement/pozzolan mixture an aqueous solution comprised of water and a high range water reducer to produce a cement/pozzolan dough-like substance, adding and mixing a sufficient quantity of glass aggregate to said cement/pozzolan dough-like substance to produce a moldable composition, wherein, after adding and mixing in the glass aggregate, the pozzolan is present in the composition at about 5% to about 20% by weight, the cement is present in the composition at about 3% to about 20% by weight, and the aggregate glass is by weight a relatively high percentage of the composition. The moldable composition is placed into a mold and vibrated, and is allowed to cure.

Abstract: In one example of an embodiment of the invention, a method for producing an aggregate is disclosed comprising mixing sewage sludge from a waste water treatment facility with a non-coal combustion ash silicoaluminous waste material, agglomerating the mixture to form an agglomerate, and pyroprocessing the agglomerate to form an aggregate. The waste material may comprise municipal solid waste incinerator bottom ash, incinerator fly ash, incinerator filter dusts, cement kiln dusts, waste glass, blast furnace slag, kiln dusts, and/or granite sawing residues, for example. The method may further comprise milling the waste material prior to mixing. Preferably, the milling is wet milling. Pyroprocessing of the agglomerate may take place in a rotary kiln. The resulting aggregate may be a lightweight or a normal weight, sintered or vitrified aggregate. Aggregates and methods for making aggregates of high and low calcium silicoaluminous materials are also disclosed.

Abstract: The use of pulverized glass having a particle size of 0 nm to 100 ?m as an ingredient in a composite material, said composite material is obtained by mixing a base component and a hardener, is disclosed. The pulverized glass is useful in composite materials, such as either a cement-based material which is to be mixed with water as a hardener or in epoxies, acrylics, polyurethanes, butylenes or silicones.

Abstract: A binder for mine tailings, alluvial sand and other aggregate used as a backfill for an underground void comprises ferrous slag, cement kiln dust and/or lime kiln dust, and Portland cement and/or lime; the binder displays strength characteristics better than or comparable to those achieved with conventional binders based on Portland cement or Portland cement and slag.

Abstract: A silica cement blend having an insulating, fire retarding and high temperature characteristic capable of withstanding temperatures ranging from ambient to greater than 40000 F without degradation of the concrete structure. In addition to its high temperature capabilities the blend can be produced as ultra light weight to heavy weight concrete. The silica based mixture when added to cementitious materials such as Portland cement, Class C Fly Ash, silica fume and other cementitious materials. Presented also are methods for reducing fire damage by coating interior/exterior walls, ceiling, and roofs of a building with a water based latex coating containing a fire retardant material and low heat conductivity silicas. Methods for painting internal/external walls, ceilings, and roof are also presented.

Abstract: A method for manufacturing concrete bodies or forms containing electric arc furnace dust in an amount of up to about 4% at elevated temperatures to provide concrete bodies is disclosed. The concrete bodies have improved compressive strength and slump retention capability. The method for producing the bodies includes the steps of providing pre-selected amounts of electric arc furnace dust, water, cement and aggregate. The electric arc furnace dust is mixed with water and then added to the cement and aggregate and mixed together at a temperature of about 32° C. and 45° C. to form a hot mixture. The hot mixture is added to a mold and cast at an elevated temperature to form a body with improved strength and slump retention characteristics.

Abstract: A cementitious composition for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate.

Abstract: It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with cement to form a cement composition. The cement composition is mixed with water and an aggregate to provide concrete with an excellent self-healing capability.

Abstract: Compositions for fabricating architectural works wherein the compositions utilize one or more cement materials, additives, fibers and recycled glass. Exemplary cement materials include Portland cement, calcium aluminate, fly ash and/or E glass. Exemplary additives include boric acid, citric acid, lithium, plasticizer and/or methylcellulose ethers. Exemplary fibers include polyvinyl alcohol (PVA) and/or micro-fibers. Crushed recycled glass is used as an aggregate or non-reactive material. Other ingredients may be used including: sodium hydroxide, potassium hydroxide and hydrated lime to alter the PH; ferrous sulfate, mono-potassium phosphate, or manganese carbonate and magnesium sulfate as color enhancements; and/or pozzolans (Vcas) to neutralize the ASR efflorescence.

Abstract: The present invention describes an improved building material composition, useful for example as a fire door core. The building material of the present invention is prepared by compressing an aqueous mixture of expanded perlite and a fast setting, cementitious composition consisting essentially of a hydraulic cement, preferably Portland cement, and a pozzolan additive selected from the group consisting of metakaolin, VCAS and mixtures thereof, and preferably also includes an organic binder and a fibrous reinforcement.

Abstract: Methods of manufacture and use of flowable materials are provided. The flowable fill materials include a cement-based fill material with a cement component and an aggregate component that are mixed with a chemical agent and the like in water. This provides the cement-based material in a flowable state that can be controllably set over time.

Abstract: A cementitious composition for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate.

Abstract: A method of placing a concrete compositions including a) combining 3-40 volume percent cement, 5-50 volume percent fine aggregate, 5-50 volume percent coarse aggregate, and 10-22 volume percent water; b) adding 1.5-40 volume percent of prepuff particles to form a concrete composition; and c) pumping the concrete composition to a point higher in elevation than the delivery point of the concrete to place the concrete. The concrete composition contains less than 30 volume percent of other light weighting aggregates and the prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the placed concrete measured according to ASTM C 143 is greater than 1 inch and the concrete has a density of from about 40 to about 135 lb./ft3.

Abstract: A coating for a reinforcing material, such as metal rebar, that increases the adhesion between the reinforcing material and a matrix, such as a cement-based mortar or concrete, in which the reinforcing material is embedded. The coating may comprise a glass frit mixed with a refractory material, such as dry Type I-II portland cement. The coating is bonded, typically by heat, to the surface of the reinforcing material. The reaction of the refractory component, e.g., portland cement, when the reinforcement, e.g., metal re-bar, is embedded in a matrix, e.g., fresh mortar or concrete, prevents the formation of soft precipitates at the interface of the matrix and its reinforcement. One coating comprises portland cement Type I-II combined with a commercial alkali-resistant glass frit. This coating is applied to a steel rebar and fired to bond to the rebar.

Abstract: A method for treating cement kiln dust containing alkaline metal salts includes the steps of hydration (formation of calcium hydroxide), dehydration i.e. drying, fractionation by sieving and carbonation (reaction of the fractionated moistened cement kiln dust) with CO2 gas in a fluidized bed reactor.

Abstract: A cover composition that can be applied to a bulk material pile, such as landfill refuse, to protect the pile from wind, precipitation, and access by animals and insects is provided. The cover composition is a mixture of a liquid, typically, water; bentonite clay; and synthetic fibers. The composition may be enhanced by the addition of one or more of the following additives: Portland cement, pregelatinized wheat starch, synthetic polymers, soda ash, and latex paint. Unlike prior art cover compositions, the disclosed composition adheres well to waste material, most notably plastics, whereby the composition is easy to apply and provides a substantially uniform, durable protective cover to landfill refuse piles and other bulk materials. Methods of applying the composition to bulk material piles are also disclosed.

Abstract: The invention relates to gypsum mortar with expanded vermiculite added with citric acid and tartaric acid and to the method for obtaining same, containing the following elements in the following proportions: between 40% and 70% calcium sulphate; between 40% and 70% laminated expanded vermiculite; between 0.05% and 0.3% citric acid; between 0.05% and 1% tartaric acid; between 0.01% and 0.5% sodium or potassium citrate; and water q.s.p. 1000 ml, in which, for surface coating, the added vermiculite is obtained following treatment in a vertical furnace, which provides improved grain size and sheets of exfoliated vermiculite without water or air, and the mortar is provided with citric acid and tartaric acid, copper sulphate and sodium or potassium scitrate, with the water being added before the mixture is produced.

Abstract: Cuttings from drilling through or into natural rock and/or soil can be incorporated into useful, high quality load-bearing structures such as vehicle roads and pads for deep drilling rigs. This process recycles a material previously regarded as valueless at best and often as a pollution hazard. The cuttings, optionally mixed with drilling mud and/or soil, are converted to the useful structures by pozzolanic and/or cementitious reactions after being mixed with suitable other materials and/or are bonded into the useful structures by asphaltic materials.

Abstract: Compositions useful as coatings, wherein the compositions comprise a coating material and a material selected from the group consisting of: mortars and grouts in admixture with the coating material. The coatings may be water-based or solvent-based, and may be epoxies, polyurethanes, polyaspartic ester polymers and polyureas in some embodiments. Compositions according to the disclosure exhibit enhanced physical properties compared with the same compositions made in the absence of a mortar or a grout as an ingredient. Compositions according to some embodiments have at least one of a mortar or grout, and optionally both, evenly dispersed within the bulk of a coating material prior to its application to a substrate sufficiently that the particles of the mortar or grout, or both when both are selected to be present, are substantially completely surrounded by a curable reactive mixture that cures to form a polymeric material useful as a coating.

Abstract: The problems to be solved by the invention are to provide a fiber reinforced cement composition for obtaining a fiber reinforced cement product which is inexpensive and economical, and to provide pushing forward disposal of defective products. Namely, the fiber reinforced cement composition comprises a hydraulic inorganic material, a siliceous material, a woody reinforcement, a finely dividing fiber reinforced cement product and/or a finely dividing intermediate of fiber reinforced cement product which is produced by said raw materials.

Abstract: An application for a pre-mixed mortar, stucco or masonry composition includes a approximately 75% sand and 25% of a light-weight cement mix comprising a cement (either Portland cement or hydraulic cement), hydrous magnesium silicate, sodium tall oil, sodium stearate, sodium C14-16 Alpha Olefin, linear alkyl benzene; and silicon dioxide.

Abstract: A cementitious Grout 111MG, with improved thermal and electrical conductivity over Grout 111, for use in at least one of geothermal heat pump systems and metal electrical grounding rod systems, with improved conductivity achieved by means of substituting metal grit for sand, a cementitious grout where both Grout 111MG and Grout 111 have mix water pH level limitations so as not to be corrosive to metals, a new use for Grout 111 as a fill material surrounding electrical grounding rods for enhanced electrical conductivity over traditional grouts, and a new use where both Grout 111MG and Grout 111 may be utilized to surround at least one of geothermal heat pump sub-surface heat transfer fluid conductive tubing/piping and electrical grounding rods installed within at least one of a well/borehole, a trench, and a pit.

Abstract: A variety of methods and compositions are disclosed herein, including, in one embodiment, a method comprising: introducing a settable composition into a subterranean formation, wherein the settable composition comprises: a cementitious component comprising a hydraulic cement and cement kiln dust; a swellable particle; and water; and allowing the settable composition to set in the subterranean formation. Another embodiment comprises a settable composition comprising: a cementitious component comprising a hydraulic cement and cement kiln dust, a swellable particle, and water.

Abstract: A fiber reinforced cement composition having the following raw material composition is provided to manufacture a fiber reinforced cement product which is excellent in bending strength, dimension stability, handling property, flexibility performance, and processability such as nail performance, as well as to provide a process for manufacturing the product. Namely, the fiber reinforced cement composition comprises a hydraulic inorganic material, a siliceous material and a woody reinforcement in a mass ratio of CaO to SiO2 contained in the hydraulic inorganic material and the siliceous material in the raw materials in a range of from 23:77 to 60:40.

Abstract: A white, substantially non-iron containing dental material formed from Portland cement. The material may be a dental cement, dental restorative or the like.

Abstract: Compositions for fabricating architectural works wherein the compositions utilize one or more cement materials, additives, fibers and recycled glass. Exemplary cement materials include Portland cement, calcium aluminate, fly ash and/or E glass. Exemplary additives include boric acid, citric acid, lithium, plasticizer and/or methylcellulose ethers. Exemplary fibers include polyvinyl alcohol (PVA) and/or micro-fibers. Crushed recycled glass is used as an aggregate or non-reactive material. Other ingredients may be used including: sodium hydroxide, potassium hydroxide and hydrated lime to alter the PH; ferrous sulfate, mono-potassium phosphate, or manganese carbonate and magnesium sulfate as color enhancements; and/or pozzolans (Vcas) to neutralize the ASR efflorescence.

Abstract: The invention provides geopolymeric compositions intended for use in carbon dioxide injection or production wells or storage reservoirs and preferably in a supercritical carbon dioxide conditions. The geopolymeric composition is formed from a suspension comprising an aluminosilicate source, a metal silicate, an alkali activator, a retarder and/or an accelerator and a carrier fluid wherein the oxide molar ratio M2O/SiO2 is greater than 0.20 with M an alkali metal.

Abstract: The sealing agent for waterproof barriers in the form of a clay and cement suspension made of polymineral clays, characterized by the fact that it contains 3-15% parts by weight of cement, up to 65% parts by weight of fly-ash and/or rock dust of similar granulation, and 30-60% parts by weight, or better up to 50% parts by weight, of water suspension of clay, heavy or loamy.

Abstract: A manufactured cementitious binder including a hydraulic binder in an amount in the range of from about 40 to 75% by weight of the cementitious binder; metakaolin in an amount greater than about 5% by weight of the cementitious binder; silica fume in an amount up to about 15% by weight of the cementitious binder; and cement kiln dust in an amount greater than about 10% by weight of the cementitious binder, the cement kiln dust including chlorine in an amount of at least 0.1% by weight of the cement kiln dust, the cementitious binder providing a cementitious settable composition, when added with water and without a lightweight additive, that has a density lower than about 13 pounds per gallon and greater than about 11 pounds per gallon and a 24 hour compressive strength at 100 F, as hardened, of at least 500 psi.

Abstract: A flexible cement stable at high temperatures contains an extender that is a finely ground bituminous coal and/or a finely ground coke prepared from coal and/or liquid hydrocarbons. Preferred cokes are made from bituminous coals and from petroleum, heavy oil, and oil from tar sands, oil shales or oil sands. The coke is present in an amount up to 100 percent by weight of cement and the particle size is preferably from 1 to 1000 microns. The coke is also effective as an extender, and the slurries and set cements have low specific gravity.

Abstract: This invention is a fiber reinforced cement composition comprising the following raw materials: a hydraulic inorganic material, a siliceous material, and a woody reinforcement wherein the siliceous material is a mixture of an average particle size of not less than 15 um and not more than 50 um which is burned ash of coal and/or rhyolite and an average particle size of not less than 1 um and not more than 15 um which is burned ash of coal and/or rhyolite.

Abstract: The object of the present invention is to provide an inorganic board whose dimensional stability, anti-freezing and fusing properties, and the like are much improved. To attain this object, an inorganic board is manufactured using a method comprising: preparing a raw material slurry by the dispersing of a cementitious material, silica-containing material, woody reinforcement, and mica in water, forming a papered mat by sheet forming the raw material slurry, pressing the papered mat, and curing the pressed papered mat in an autoclave at a temperature higher than 150° C., wherein the mass ratio of the cementitious inorganic material and silica-containing material is set to be in the range of between 35:65 and 45:55, to promote the curing reaction of the inorganic board and improve its dimensional stability and anti-freezing and fusing properties.

Abstract: The invention provides geopolymeric compositions, which have controllable thickening and setting times for a wide range of temperatures and a large range of geopolymer slurry densities. The geopolymer slurry compositions have good mixability and pumpability, while the set materials develop good compressive strength and permeability. The invention discloses a method for preparing geopolymer for oilfield cementing applications. The geopolymeric compositions according to the invention comprises a suspension comprising an aluminosilicate source, a metal silicate, an alkali activator, lightweight or heavyweight fillers and a carrier fluid wherein the suspension of said geopolymeric composition is pumped in a well and allowed to set.

Abstract: The present invention includes methods and compositions that include a latex, and at least one of a natural pozzolan or cement kiln dust. An embodiment includes a method comprising: placing a latex composition in a subterranean formation, wherein the latex composition comprises: latex, a component selected from the group consisting of a natural pozzolan, cement kiln dust, and a combination thereof, and water; and allowing the latex composition to set. Another embodiment of the present invention includes a latex composition comprising: latex, a component selected from the group consisting of a natural pozzolan, cement kiln dust, and a combination thereof.

Abstract: A cementitious composition for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate, preferably present in an amount which by weight is at least 60% of the composition. The cement content is relatively low, preferably in the range of about 3% to 20% by weight, and the pozzolan to cement ratio is relatively high, preferably equal to or greater than unity, but which can suitably be in the range from 0.25 to 4. The composition preferably uses recycled glass and preferably has a high recycle content. The sheet-form material made in accordance with the invention can be used to provide exposed solid surfaces, for example, surfaces for shower walls and floors, counter-tops, table-tops, and the like, where low hydraulic permeability and high compressive and tensile strength are desired.

Abstract: A fiber reinforced cement composition comprising the following raw materials: not less than 25% by mass and not more than 45% by mass of a hydraulic inorganic material; not less than 50% by mass and not more than 65% by mass of a siliceous material; not less than 5% by mass and not more than 12% by mass of woody reinforcement; not less than 0.25% by mass and not more than 1.5% by mass of a water soluble resin, wherein the hydraulic inorganic material is a Portland cement, the siliceous material is an amorphous material selected from the group consisting of fly ash, silica fume, blast furnace slag, perlite powder, glass powder, and mixtures thereof; the woody reinforcement is needle-leaves-tree unbleached kraft pulp and/or needle-leaves-tree bleached kraft pulp and used newspaper, and the water soluble resin is a polyvinyl alcohol resin.

Abstract: Pozzolan compositions incorporate glassy, amorphous particulates derived from byproducts of processes in which substantial energy was invested in generating those byproducts, at least one of which comprises amorphous calcium silicate slag generated as a byproduct of phosphorous production. The calcium silicate particulate is blended with one or more additional pozzolans, preferably one or more particulates of a material selected from the group consisting of fused silica of the type generated as a byproduct of making refractory grade fused silica and cullet glass of the type rejected from glass making processes. Pozzolanic cements incorporating up to about 50% by weight of such pozzolan compositions are also disclosed.

Abstract: A method for making a low embodied energy cementitious mixture by blending a variety of post-consumer wastes, post-industrial wastes, as well as renewable, organic and recyclable materials with Portland cement or a material having similar cementitious properties. The primary materials are recycled concrete, coal-fired fly ash waste, silica fume, post-industrial waste, organic or inorganic waste fibers. Glass, brick, ceramics, ground tires and other waste products can also be included.

Abstract: Provided is a fiber reinforced cement board having good installation properties such as nail performance, flexibility performance and handling performance, as well as other favorable physical properties. The board has an absolute dry specific gravity of not less than 1.20 and not more than 1.30 and comprises as raw materials not less than 28% by mass and not more than 32% by mass of a hydraulic inorganic material, not less than 54% by mass and not more than 58% by mass of a siliceous material, not less than 8% by mass and not more than 12% by mass of a woody reinforcement, not less than 2% by mass and not more than 5% by mass of mica, and not less than 0.5% by mass and not more than 1.25% by mass of a water-soluble resin.

Abstract: The technical field of the invention belongs to concrete and cement. The invention relates to a sialite binary wet cement and its package, transportation, storage and application. The sialite binary wet cement is composed of a “female body” as a primary component and a “male body” as a secondary component both of which are produced, stored, and transported separately, and are mixed together when they are used, wherein the “female body” and the “male body” each have a specific surface area of 2800-7500 cm2/g, the “female body” is mainly composed of inorganic cementitious materials and water, and it is in slurry, paste or wet powder form during the whole period of its production, storage, transportation and usage; the “male body” is mainly composed of inorganic cementitious materials, and it can be a wet form or a dry powder form. When they are used, the “female body” and the “male body” are mixed together with a small amount of regulating agents.

Abstract: A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, road beds and other articles.

Abstract: The present invention relates to a composite concrete building material comprising cementatious materials; and foam glass aggregates. The cementatious materials may comprise cement, sand and fly ash. The cementatious materials may also comprise other materials, including, for example, reinforcing fibers. In one embodiment the reinforcing fibers are comprised of one or more of the following materials: glass, steel, titanium, other metals, carbon, or Kevlar. The foam glass aggregates may have a closed pore structure and average pore size of 1.0 mm or less, wherein said average pore size is measured based on the distance between two farthest points of pore surface. The foam glass aggregate may have an average density of 30 to 100 PCF. The foam glass aggregate may have a compression strength of 2000 PSI or greater. The foam glass aggregates may be on average between 0.1 inches and approximately 2.0 inches in their largest diameter.

Abstract: An embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive, wherein the extended settable composition is capable of remaining in a pumpable fluid state for at least about 1 day; adding a cement set accelerator to the extended settable composition; introducing the extended settable composition into a well bore; and allowing the extended settable composition to set. Another embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive; storing the extended settable composition; adding a cement set accelerator to the extended settable composition; introducing the extended settable composition into a well bore; and allowing the extended settable composition to set.

Abstract: A method for producing a free-flowing granular material includes screening pumice and mixing it with sludge issuing from the biological treatment of municipal or industrial wastewater.

Abstract: A building product incorporating synthetic microspheres having a low alkali metal oxide content is provided. The synthetic microspheres are substantially chemically inert and thus a suitable replacement for cenospheres derived from coal combustion, particularly in caustic environments such as cementitious mixtures. The building product can have a cementitious matrix such as a fiber cement product. The synthetic microspheres can be incorporated as a low density additive and/or a filler for the building product and/or the like.

Abstract: A variety of methods and compositions are disclosed herein, including, in one embodiment, a method comprising: introducing a settable composition into a subterranean formation, wherein the settable composition comprises: a cementitious component comprising a hydraulic cement and cement kiln dust; a swellable particle; and water; and allowing the settable composition to set in the subterranean formation. Another embodiment comprises a settable composition comprising: a cementitious component comprising a hydraulic cement and cement kiln dust, a swellable particle, and water.

Abstract: An embodiment of a method of cementing comprises: introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement kiln dust, a natural pozzolan, and water; and allowing the cement composition to set. Another embodiment of a method comprises: introducing a cement composition into a subterranean formation, wherein the cement composition comprises a cement, a natural pozzolan, and water, wherein the cement comprises Portland cement interground with burned shale; and allowing the cement composition to set. Another embodiment includes a cement composition comprising at least one additive selected from the group consisting of cement, cement kiln dust, Portland cement interground with burned shale, and a combination thereof; a natural pozzolan; and water.

Abstract: The use of pulverized glass having a particle size of 0 nm to 100 ?m as an ingredient in a composite material, said composite material is obtained by mixing a base component and a hardener, is disclosed. The pulverized glass is useful in composite materials, such as either a cement-based material which is to be mixed with water as a hardener or in epoxies, acrylics, polyurethanes, butylenes or silicones.

Abstract: A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, road beds and other articles.