Process for obtaining a cementitious mineral substance

Patent metadata

Field	Value
Publication number	US-11566264-B2
Application number	US-201715495595-A
Country	US
Kind code	B2
Filing date	Apr 24, 2017
Priority date	Apr 25, 2016
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

The invention relates to a method for obtaining a mineral substance from a base comprising mineral matter, the method comprising obtaining the base comprising a predetermined quantity of the mineral matter synthesised by a living structure or a portion of the latter,characterised in that obtaining the base comprises providing the living structure and providing at least one lactic acid microorganism suitable for symbiosis with the living structure for the synthesis of the mineral matter of the mineral substance.The invention also relates to a mineralising composition comprising a living structure, a lactic acid microorganism, a nutritive substance; the mineral substance used in the method; and the use of a combination of a living structure and a lactic acid microorganism in symbiosis with each other as a mineralising agent in a self-regenerating material.

First claim

The invention claimed is:

1. A mineral cement repairing substance comprising:
25 to 73 wt. % of a living structure or at least a portion thereof;
2 to 50 wt. % of at least one lactic acid microorganism;
25 to 70 wt. % of mineral matter synthesised by the living structure or the portion thereof; and
a nutritive substance,
wherein the at least one lactic acid microorganism is chosen from the group consisting of:
the family Aerococcaceae,
the family Bifidobacteriaceae,
the family Carnobacteriaceae,
the family Enterococcaceae,
the family Lactobacillaceae,
the family Leuconostocaceae,
the family Saccharomycetaceae,
the family Sporolactobacillaceae, and
the family Streptococcaceae,

wherein the living structure is a calcifying bacteria chosen from the genera Bacillus and Pseudomonas,
wherein the nutritive substance is chosen from the group consisting of:
an aqueous mixture comprising 5 g of glucose and 10 g of fructose, in 1 L of distilled water, and
de Man, Rogosa and Sharpe agar (M.R.S. agar), and

wherein the lactic acid microorganism accelerates production of the mineral matter by the living structure.

2. The mineral cement repairing substance according to claim 1 , further comprising a base substrate suitable for proliferation of the living structure and/or of the lactic acid microorganism.

3. The mineral cement repairing substance according to claim 1 , wherein the mineral matter, and optionally a base substrate, is present in a porous form, with pores, opening outside of the mineral cement repairing substance, in which the living structure and the lactic acid microorganism are present.

4. A mineralising cement repairing composition comprising:
25 to 73 wt. % of a living structure or at least a portion of a living structure;
2 to 50 wt. % of at least one lactic acid microorganism; and
25 to 70 wt. % of a nutritive substance,
wherein the at least one lactic acid microorganism is chosen from the group consisting of:
the family Aerococcaceae,
the family Bifidobacteriaceae,
the family Carnobacteriaceae,
the family Enterococcaceae,
the family Lactobacillaceae,
the family Leuconostocaceae,
the family Saccharomycetaceae,
the family Sporolactobacillaceae, and
the family Streptococcaceae,

wherein the living structure is a calcifying bacteria chosen from the genera Bacillus and Pseudomonas,
wherein the nutritive substance is chosen from the group consisting of:
an aqueous mixture comprising 5 g of glucose and 10 g of fructose, in 1 L of distilled water, and
de Man, Rogosa and Sharpe agar (M.R.S. agar), and

wherein the lactic acid microorganism accelerates production of a mineral matter by the living structure.

5. The mineral cement repairing substance according to claim 2 , wherein the base substrate is chosen from the group consisting of stone, a portion of an existing edifice, or a construction material.

6. The mineralising cement repairing composition according to claim 4 , further comprising a base substrate suitable for proliferation of the living structure and/or of the lactic acid microorganism.

7. The mineralising cement repairing composition according to claim 4 , wherein the mineral matter, and optionally a base substrate, is present in a porous form, with pores opening outside of the mineralising cement repairing composition, in which the living structure and the lactic acid microorganism are present.

8. The mineralising cement repairing composition according to claim 6 , wherein the base substrate is chosen from the group consisting of stone, a portion of an existing edifice, or a construction material.

Assignees

• Soletanche Freyssinet

Inventors

• Sarraf Riad

Classifications

• C04B2111/72

  Repairing or restoring existing buildings or building materials · CPC title

• C04B28/10

  Lime cements or magnesium oxide cements · CPC title

• Y02P40/18

  Carbon capture and storage [CCS] · CPC title

• C12P1/04 Primary

  by using bacteria · CPC title

• C04B2103/0001

  Living organisms, e.g. microorganisms, or enzymes · CPC title