A method for producing nano-clays comprising forming a mixture of a clay and water, wherein water is present in an amount of from 2 to 10% by weight of the total weight of clay and water, and milling the mixture of clay and water in the presence of a grinding media to form the nano-clay.

A method for producing nano-clays comprising forming a mixture of a clay and water, wherein water is present in an amount of from 2 to 10% by weight of the total weight of clay and water, and milling the mixture of clay and water in the presence of a grinding media to form the nano-clay.

A method for production of a grout comprises the steps of: a) acquiring a batch cement for a ball mill, b) forming in the ball mill a cement powder also called a nano-cement powder, c) pouring the nano-cement powder obtained in step b) to a rotary mixer, d) adding water to the rotary mixer, e) mixing the water and the nano-cement powder until a homogenous mixture of the nano-grout or the nano-slurry is obtained, f) pouring the nano-grout or the nano-slurry obtained in step e) from the rotary mixer to a distributing device.

A grouting method comprises the steps of: a) preparing the construction site for the grouting application, b) applying a grouting material to the construction site or specific places of the construction site, c) curing the applied grouting material for a predetermined amount of time, wherein the grouting material is the nano-grout or the nano-slurry.