The present invention relates to a process for the manufacture of a grout for concrete comprising a stage of mixing a hydraulic binder and water, characterized in that the process comprises a stage of deep freezing the water in the solid form.

Geopolymer compositions are provided herein, the geopolymer compositions including an aluminosilicate or a silicate of magnesium, zinc, and/or one or more rare earth metals, and an organic base, the organic base including an amidine, a guanidine, a vinamidine, a tetra-substituted ammonium species, an amine, a phosphazene, a tetra-substituted phosphonium species, a conjugate acid thereof, a salt thereof, or any combination thereof. Methods of making the geopolymer compositions are further provided. Methods of making alkali-free ceramics from geopolymer compositions including an organic base are further provided.

Geopolymer compositions are provided herein, the geopolymer compositions including an aluminosilicate or a silicate of magnesium, zinc, and/or one or more rare earth metals, and an organic base, the organic base including an amidine, a guanidine, a vinamidine, a tetra-substituted ammonium species, an amine, a phosphazene, a tetra-substituted phosphonium species, a conjugate acid thereof, a salt thereof, or any combination thereof. Methods of making the geopolymer compositions are further provided. Methods of making alkali-free ceramics from geopolymer compositions including an organic base are further provided.

A nano-inorganic composition according to an embodiment of the present disclosure includes and is not limited to excellent mechanical characteristics such as surface hardness and wear characteristics, chemical stability such as water resistance, acid resistance, and alkali resistance, and excellent thermal stability, as the composition is comprised of inorganic materials. In addition, the nano-inorganic composition may be controlled to have super-hydrophilic, hydrophilic, or hydrophobic properties, depending on coating methods. The nano-inorganic composition also has excellent surface contamination resistance and easy-clean properties depending on the characteristics of the thin film coating. Also, the nano-inorganic composition has excellent optical properties such as light transmittance and light reflectance.

A nano-inorganic composition according to an embodiment of the present disclosure includes and is not limited to excellent mechanical characteristics such as surface hardness and wear characteristics, chemical stability such as water resistance, acid resistance, and alkali resistance, and excellent thermal stability, as the composition is comprised of inorganic materials. In addition, the nano-inorganic composition may be controlled to have super-hydrophilic, hydrophilic, or hydrophobic properties, depending on coating methods. The nano-inorganic composition also has excellent surface contamination resistance and easy-clean properties depending on the characteristics of the thin film coating. Also, the nano-inorganic composition has excellent optical properties such as light transmittance and light reflectance.

A method for sealing of surfaces comprising the steps of: (a) supplying a first grouting composition; (b) introducing a second component to said first grouting composition to form a third grouting composition; and (c) forming a sealing barrier on a surface from said third grouting composition.

A method for sealing of surfaces comprising the steps of: (a) supplying a first grouting composition; (b) introducing a second component to said first grouting composition to form a third grouting composition; and (c) forming a sealing barrier on a surface from said third grouting composition.