Described are cementitious reagent materials produced from globally abundant inorganic feedstocks. Also described are methods for the manufacture of such cementitious reagent materials and forming the reagent materials as microspheroidal glassy particles. Also described are apparatuses, systems and methods for the thermochemical production of glassy cementitious reagents with spheroidal morphology. The apparatuses, systems and methods make use of an in-flight melting/quenching technology such that solid particles are flown in suspension, melted in suspension, and then quenched in suspension. The cementitious reagents can be used in concrete to substantially reduce the CO.sub.2 emission associated with cement production.

Geopolymer cement slurries, cured geopolymer cements, and methods of making cured geopolymer cement and methods of using geopolymer cement slurries are provided. The geopolymer cement slurry comprises Saudi Arabian volcanic ash, an aqueous solution, Na.sub.2SiO.sub.3, NaOH, and a resin. The Saudi Arabian volcanic ash comprises SO.sub.3, CaO, SiO.sub.2, Al.sub.2O.sub.3, Fe.sub.2O.sub.3, MgO, and K.sub.2O.

A permeable floating concrete vessel for creating floating aquatic habitats is disclosed. The vessel includes an interior space to hold growth material and a plant. The vessels includes one or more channels so a root of the plant can extend through the channel and into a body of water in which the vessel is secured. The vessel is made from a buoyant material, such as water-permeable concrete material. In an exemplary embodiment the water-permeable concrete material includes a mixture of cement, glass microspheres, expanded glass aggregate, and microfibers. Two or more vessels may be connected together via a connecting member to form an array of the vessels.

A permeable floating concrete vessel for creating floating aquatic habitats is disclosed. The vessel includes an interior space to hold growth material and a plant. The vessels includes one or more channels so a root of the plant can extend through the channel and into a body of water in which the vessel is secured. The vessel is made from a buoyant material, such as water-permeable concrete material. In an exemplary embodiment the water-permeable concrete material includes a mixture of cement, glass microspheres, expanded glass aggregate, and microfibers. Two or more vessels may be connected together via a connecting member to form an array of the vessels.

Described are cementitious reagent materials produced from globally abundant inorganic feedstocks. Also described are methods for the manufacture of such cementitious reagent materials and forming the reagent materials as microspheroidal glassy particles. Also described are apparatuses, systems and methods for the thermochemical production of glassy cementitious reagents with spheroidal morphology. The apparatuses, systems and methods makes use of an in-flight melting/quenching technology such that solid particles are flown in suspension, melted in suspension, and then quenched in suspension. The cementitious reagents can be used in concrete to substantially reduce the CO.sub.2 emission associated with cement production.

Described are cementitious reagent materials produced from globally abundant inorganic feedstocks. Also described are methods for the manufacture of such cementitious reagent materials and forming the reagent materials as microspheroidal glassy particles. Also described are apparatuses, systems and methods for the thermochemical production of glassy cementitious reagents with spheroidal morphology. The apparatuses, systems and methods makes use of an in-flight melting/quenching technology such that solid particles are flown in suspension, melted in suspension, and then quenched in suspension. The cementitious reagents can be used in concrete to substantially reduce the CO.sub.2 emission associated with cement production.

Described are cementitious reagent materials produced from globally abundant inorganic feedstocks. Also described are methods for the manufacture of such cementitious reagent materials and forming the reagent materials as microspheroidal glassy particles. Also described are apparatuses, systems and methods for the thermochemical production of glassy cementitious reagents with spheroidal morphology. The apparatuses, systems and methods makes use of an in-flight melting/quenching technology such that solid particles are flown in suspension, melted in suspension, and then quenched in suspension. The cementitious reagents can be used in concrete to substantially reduce the CO.sub.2 emission associated with cement production.

An explosion protection system comprises the steps of providing a fire extinguishing chemicals which under heat from explosion will decompose to absorb heat and releasing fire extinguishing gases which create a gas barrier against explosion; providing blast suppression chemicals which provide attenuation of shock resulting from an explosion; and providing a reinforcement layer on the object to be protected, the reinforcement layer providing impact and tensile strength materials and supporting the fire extinguishing chemicals and blast suppression chemicals including means for blocking gases released by an explosion.

An explosion protection system comprises the steps of providing a fire extinguishing chemicals which under heat from explosion will decompose to absorb heat and releasing fire extinguishing gases which create a gas barrier against explosion; providing blast suppression chemicals which provide attenuation of shock resulting from an explosion; and providing a reinforcement layer on the object to be protected, the reinforcement layer providing impact and tensile strength materials and supporting the fire extinguishing chemicals and blast suppression chemicals including means for blocking gases released by an explosion.

Embodiments provide a mortar slurry and a method for preparing a hardened mortar. The method includes the steps of: mixing an aramide capsule, a cement, a silica, and a water to form a mortar slurry; and allowing the mortar slurry to set to form the hardened mortar, where the aramide capsule is embedded in the hardened mortar. A continuous solvent and a surfactant are mixed to produce a continuous phase. A dispersed solvent and a dispersed monomer are mixed to produce a dispersed phase. The continuous solvent and a crosslinker are mixed to produce a crosslinker solution. The continuous phase and the dispersed phase are mixed to form a mixture having an emulsion such that the dispersed phase is dispersed as droplets in the continuous phase, where an interface defines the droplets of the dispersed phase dispersed in the continuous phase. The crosslinker solution is added to the mixture such that the crosslinker reacts with the dispersed monomer. An aramide polymer forms on the interface of the droplets, forming the aramide capsule. The aramide capsule is settled and separated from the mixture, and is dried to form a free flowing powder.