Hydrophobic concrete and asphalt
A method of making superhydrophobic concrete includes creating a mixture, wherein the mixture comprises aragonite and/or graphene, and heating the mixture to a temperature between 500° C. and 2,500° C., then drying the mixture, and, optionally, adding the mixture to concrete.
1 . A method of reducing rusting in steel or concrete, the method comprising:
combining and mixing aragonite and superhydrophobic graphene to form a mixture;
heating the mixture to a temperature between 500° C. and 2,500° C.;
drying the mixture;
making the mixture into a paste; and
applying the paste to the steel or the concrete.
2 . The method of claim 1 , further comprising removing oxygen from the mixture before making the mixture into the paste.
3 . The method of claim 1 , wherein the paste is formulated as a paint, resin, or filler.
4 . The method of claim 1 , wherein aragonite is present in the mixture a quantity less than the superhydrophobic graphene.
5 . The method of claim 1 , wherein the method results in less quarry calcium carbonate in concrete than traditional concrete production.
6 . The method of claim 1 , wherein the method results in less carbon dioxide emission than traditional concrete production.
7 . The method of claim 1 , wherein the aragonite comprises modified aragonite particles formed from restructured oolitic aragonite that have an average diameter less than or equal to 10 μm.
8 . The method of claim 7 , wherein the modified aragonite particles have an average particle diameter of between 100 nm and 10 μm.
9 . The method of claim 1 , wherein the superhydrophobic graphene comprises few-layer graphene.
10 . The method of claim 1 , wherein the superhydrophobic graphene comprises hydrophobic moieties covalently attached to the graphene.
11 . The method of claim 1 , wherein the superhydrophobic graphene is in admixture with additional hydrophobic materials.
12 . The method of claim 1 , wherein the paste is applied to steel, and wherein the steel is used to reinforce concrete.
13 . The method of claim 1 , wherein the paste is applied to concrete.