EP3820828A1 - Composition comprenant au moins un micro-organisme et son utilisation - Google Patents

Composition comprenant au moins un micro-organisme et son utilisation

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Publication number
EP3820828A1
EP3820828A1 EP19735576.1A EP19735576A EP3820828A1 EP 3820828 A1 EP3820828 A1 EP 3820828A1 EP 19735576 A EP19735576 A EP 19735576A EP 3820828 A1 EP3820828 A1 EP 3820828A1
Authority
EP
European Patent Office
Prior art keywords
atom
och
composition according
compounds
bacillus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19735576.1A
Other languages
German (de)
English (en)
Inventor
Tobias Müller
Sarah HINTERMAYER
Jan HELLRIEGEL
Susanne Christine Martens-Kruck
Isabelle HAAS
Lukas Falke
Stella Molck
Lorena Stannek-Goebel
Anke Reinschmidt
Magnus Kloster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Evonik Operations GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Evonik Operations GmbH filed Critical Evonik Operations GmbH
Publication of EP3820828A1 publication Critical patent/EP3820828A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
    • C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
    • C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
    • C04B41/4922—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as monomers, i.e. as organosilanes RnSiX4-n, e.g. alkyltrialkoxysilane, dialkyldialkoxysilane
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
    • C04B24/42—Organo-silicon compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/502—Water
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20—Bacteria; Culture media therefor
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20—Bacteria; Culture media therefor
    • C12N1/205—Bacterial isolates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0001—Living organisms, e.g. microorganisms, or enzymes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0004—Compounds chosen for the nature of their cations
    • C04B2103/001—Alkaline earth metal or Mg-compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00586—Roofing materials
    • C04B2111/00594—Concrete roof tiles
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72—Repairing or restoring existing buildings or building materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72—Repairing or restoring existing buildings or building materials
    • C04B2111/723—Repairing reinforced concrete
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
    • C12R2001/00—Microorganisms ; Processes using microorganisms
    • C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
    • C12R2001/07—Bacillus
    • C12R2001/125—Bacillus subtilis ; Hay bacillus; Grass bacillus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y02P40/18—Carbon capture and storage [CCS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • Composition comprising at least one microorganism and their
  • the present invention relates to a composition
  • a composition comprising at least one microorganism which can form a phosphate or carbonate precipitate in an alkaline medium, and optionally at least one calcium source, the composition being characterized in that it has at least one silicon compound which has at least one silicon Atom, at least one C atom and at least one H atom, and a process for the production of construction products based on mineral building materials, wherein an appropriate composition is used in the production.
  • methods are to be mentioned in which cracks can be healed by the formation of expansive mineral structures or in which reactive resins or mineral systems are injected into the crack under pressure and thus subsequently seal the crack.
  • Known additives are e.g. B. water repellents used in the manufacture of Building materials, such as B. bricks, concrete parts, mortar or similar be added or applied to these or to parts of them after the building materials or structures have been created.
  • Such water repellents are e.g. B. in EP 0538555 A1, WO 2006/081891 A1, WO 2006/081892 A1, WO 2013/076035 A1 or WO 2013/076036 A1.
  • water repellents prevents water from penetrating the concrete; however, if larger cracks occur due to tension, water penetration and weakening of the structure are not prevented.
  • mineral-forming microorganisms as an additive in the production of building materials, such as. B. by Jonkers in WO 2009/093898 A1, WO 201 1/126361 A1 and WO 2016/010434 A1, or as an additive for the subsequent treatment of building materials or structures, such as. B. by Jonkers in WO 2014/185781 A1, which are said to cause cracks to heal themselves.
  • Microorganisms can heal cracks to a certain extent through the formation of calcium carbonate, the so-called MICB (microbial induced calcite pecipitation); however, if the amount of added Ca nutrient medium has been used up, calcium carbonate (calcite) can no longer be produced.
  • the amount of Ca nutrient medium to be added in the production of the building material is limited, however, since from a certain amount of additive, the density (concrete density) and thereby the compressive strength decrease significantly. If building materials or structures are subsequently treated, this must be repeated regularly in order to provide sufficient Ca nutrient medium. Further information can be found, for example, in Wiktor and Jonkers, Smart Mater. Struct.
  • compositions comprising at least one microorganism which can form a phosphate or carbonate precipitate in an alkaline medium, and optionally at least one calcium source, the composition being characterized in that it has at least one silicon compound which has at least one Si atom, at least one C atom and at least one H atom.
  • the present invention therefore relates to compositions comprising at least one microorganism which can form a phosphate or carbonate precipitate in an alkaline medium, and optionally at least one calcium source, the compositions being characterized in that they have at least one silicon compound which comprises at least one silicon Atom, at least one C atom and at least one H atom.
  • the present invention also relates to a method for producing construction products based on mineral building materials, a composition according to the invention being used in the production.
  • compositions according to the invention have the advantage that they can be used both as a mass additive, e.g. can be used in the manufacture of construction products or structures, as well as an additive or treatment agent for the repair or maintenance of existing construction products or structures. Repeated crack healing is possible in particular through the composition according to the invention.
  • the compositions according to the invention also exhibit sufficient stability without encapsulating the biomass.
  • the combination of silicon compound (as a hydrophobizing agent), which has at least one Si atom, at least one C atom and at least one H atom, and microorganisms has the further advantage that the penetration of water is initially avoided by the hydrophobicizing agents; however, if this barrier is penetrated, the microorganisms can have their curative effects (i.e., preferably through the formation of inorganic substances) Substances at least partially close the crack in the concrete). The water is displaced from the porous concrete structure for longer due to the hydrophobic properties; this allows bacteria to remain in the sporulated state for a longer time or to sporulate more quickly after activation.
  • composition according to the invention can avoid costs which may arise from the fact that cracks which have arisen go unnoticed and thus lead to progressive damage which then has to be eliminated in a complex manner.
  • compositions according to the invention and the method according to the invention are described below by way of example, without the invention being restricted to these exemplary embodiments. If areas, general formulas or classes of compounds are given below, these should not only include the corresponding areas or groups of compounds that are explicitly mentioned, but also all sub-areas and sub-groups of compounds that are obtained by removing individual values (areas) or compounds can be. If documents are cited in the context of the present description, their content, in particular with regard to the facts referred to, should completely belong to the disclosure content of the present invention. If percentages are given below, this applies if not otherwise stated by weight%. If mean values, for example molar mass mean values, are given below, this is the number average unless otherwise stated. Are substance properties such. B.
  • the indicated indices can represent both absolute numbers and mean values. In the case of polymeric compounds, the indices preferably represent mean values.
  • composition according to the invention comprising at least one microorganism which can form a phosphate or carbonate precipitate in an alkaline medium, and optionally at least one source of phosphate and / or calcium, is characterized in that the composition has at least one silicon compound which has at least one silicon Atom, at least one C atom and at least one H atom.
  • the microorganism is preferably selected from a bacterium, a lyophilized bacterium and a bacterial spore of a bacterium, preferably the microorganism is a bacterial spore of a bacterium.
  • the microorganism is preferably selected from bacterial spores or bacteria of the genera Enterococcus, Diophrobacter, Lysinbacillus, Planococcus, Bacillus, Proteus or Sporosarcina, preferably selected from the bacterial spores or bacteria of the group comprising the species Bacillus cohnii, Bacillus megaterium, Bacillus pasteurii, Bacillus pseudofarm, preferably Bacillus pseudof Bacillus pseudofirmus (DSM 8715) Bacillus sphaericus, Bacillus spp., Bacillus subtilis, Proteus vulgaris, Bacillus licheniformis, Diophrobacter sp., Enterococcus faecalis, Lysinbacillus sphaericus, Proteus vulgaris and Sporosarcii sub subtilis, particularly preferably a Bacillus subtilis DSM 32315, as described in WO 2017/207372 A1 and as described at the DSMZ
  • the weight ratio of microorganisms, which can form a phosphate or carbonate precipitate in an alkaline medium, to silicon compounds, which has at least one Si atom, at least one C atom and at least one H atom, in the composition from 100 to 1 to 1 to 100, preferably from 10 to 1 to 1 to 2.
  • the mass fraction of microorganisms which can form a phosphate or carbonate precipitate in an alkaline medium, based on the total mass of the composition, preferably on the total mass of the composition without taking water into account, is preferably from 0.0001 to 10% by weight from 0.001 to 5% by weight and particularly preferably from 0.002 to 3% by weight.
  • the number of spores per gram is preferably from 1 x 10 5 to 1 x 10 13 spores / g, preferably from 1 x 10 7 to 1 x 10 12 spores / g and particularly preferably from 1 x 10 9 to 1 x 10 11 spores / g.
  • the number of spores can be determined in accordance with the standard DIN EN 15784.
  • the composition according to the invention preferably contains at least one mineral building material, preferably cement.
  • the composition according to the invention can also have several mineral building materials. In principle, all known mineral building materials can be contained in the composition according to the invention.
  • the composition preferably contains sand, clay, gravel, crushed stone and / or gypsum as mineral building materials, particularly preferably in combination with cement.
  • composition according to the invention can contain a solvent, ie represent a liquid-containing mixture, or be solvent-free, ie represent a dry mixture.
  • a solvent in particular water.
  • the proportion of solvent, preferably water, is in the Total composition from 2.5 to 66% by weight, preferably from 5 to 40% by weight and particularly preferably from 10 to 20% by weight.
  • composition according to the invention contains an enrichment medium (often also called a nutrient medium or substrate) for the enrichment of the microorganisms. All known can be used as the enrichment medium
  • Enrichment media are used.
  • the enrichment medium preferably comprises a carbon source and / or a nitrogen source, particularly preferably the enrichment medium additionally contains a phosphorus source, in particular a phosphate source.
  • Preferred carbon sources are selected from the group of monosaccharides, oligosaccharides and polysaccharides. Particularly preferred carbon sources are glucose, fructose, maltose, sucrose, molasses, starch and starch products as well as whey and whey products.
  • the starch or starch products are preferably obtained from wheat or corn. Alditols (sugar alcohols), including in particular glycerol, can also be used as a carbon source. Both organic and inorganic nitrogen sources are suitable as nitrogen sources.
  • organic and inorganic nitrogen sources are suitable as nitrogen sources.
  • Nitrogen sources are preferably selected from the group consisting of peptone, yeast extract, soy flour, soy husks, cottonseed flour, lentil flour, aspartate, glutamate and tryptic soy broth.
  • a preferred inorganic nitrogen source is ammonium sulfate.
  • Some of the listed carbon sources are also suitable as a nitrogen source and vice versa, these include, for example, whey or whey products, peptone, yeast extract, soy flour, soy husks, cottonseed flour, lentil flour, tryptic soy broth.
  • the phosphorus source or phosphate source is preferably selected from the group consisting of ammonium phosphate, sodium phosphate and potassium phosphate.
  • Phosphorus can also be a component of the carbon and / or nitrogen sources.
  • the composition of the enrichment medium based on the respective dry weights of the individual components depends on the respective nutrient spectrum, but the weight ratio is preferably 1: 0.01: 0.001 to 1:10:10 for carbon source: nitrogen source: phosphorus source (C: N: P components ).
  • Suitable enrichment media are described, for example, in: “FAO. 2016. Probiotics in animal nutrition - Production, impact and regulation by Yadav S. Bajagai, Athol V. Klieve, Peter J. Dartand Wayne L. Bryden. Editor Harinder PS Makkar. FAO Animal Production and Flealth Paper No. 179. Rome. "(ISBN 978-92-5-109333-7).
  • a tryptic soy broth, a yeast extract, a peptone, an aspartate or a glutamate, or a mixture of two or more of the enrichment media mentioned is preferably present in the composition according to the invention.
  • Is particularly preferred in the Composition according to the invention contain tryptic soy broth (casein soy peptone medium) as an enrichment medium. It may be advantageous if one or more trace elements are present in the enrichment media in addition to the agents mentioned.
  • the composition according to the invention preferably has enough enrichment medium that the mass ratio of enrichment medium to microorganisms in the composition is from 10,000 to 1 to 1 to 10,000, preferably from 1000 to 1 to 1 to 1000, more preferably from 100 to 1 to 1 to 100, is particularly preferably from 10 to 1 to 1 to 10.
  • composition according to the invention has a calcium source.
  • the composition according to the invention preferably has calcium salts, preferably calcium salts of organic acids, as the calcium source.
  • Particularly preferred calcium sources are those which can also act as an enrichment medium at the same time.
  • Particularly preferred calcium sources are calcium gluconate, calcium acetate, calcium format, calcium lactate or calcium nitrate, very particularly preferably calcium lactate.
  • the at least one silicon compound, the at least one Si atom, at least one C atom and at least one H atom is preferably selected from silane compounds, siloxane compounds, silicone oils, siliconates, organosilane compounds or organosiloxane compounds, preferably selected from the organosilane compounds.
  • the at least one silicon compound preferably has hydrophobic properties.
  • Particularly preferred silicon compounds which have hydrophobic properties are those which have the water absorption of mortar, determined in accordance with DIN EN 480-5, if these are present in a concentration of 5% by weight, preferably in a concentration of 2% by weight and particularly preferred in a concentration of 0.5% by weight, based on the cement, to be added to the mortar, by at least 50% after 7 days and by at least 60% after 28 days.
  • composition according to the invention preferably contains at least one silicon compound which has at least one Si atom, at least one C atom and at least one H atom and satisfies the formula (I), (IIIa) or (Mb), R-SiR 1 xR 2 z (I)
  • R is a linear or branched alkyl group with 1 to 20 C atoms
  • R 1 is a linear or branched alkyl group with 1 to 4 C atoms
  • R 2 is a linear or branched alkoxy group with 1 to 4 carbon atoms or one
  • radicals R 'independently of one another are hydroxy, alkoxy, preferably with 1 to 6, preferably with 1 to 4 carbon atoms, alkoxyalkoxy, preferably with 1 to 6, preferably with 1 to 4 carbon atoms, alkyl, preferably with 1 to 20, preferably with 1 to 10 carbon atoms, alkenyl, preferably 1 to 20, preferably 1 to 10
  • n is an integer from 2 to 30,
  • n is an integer from 3 to 30,
  • the composition according to the invention preferably contains at least one silicon compound which has at least one Si atom, at least one C atom and at least one H atom which is selected from CH3Si (OCH3) 3, CH3Si (OC2H 5 ) 3, C2H 5 Si (OCH3 ) 3, i- C 3 H 7 Si (OCH 3 ) 3, C 2 H 5 Si (OC2H 5 ) 3 , iC 3 H7Si (OC2H 5 ) 3 , nC 3 H 7 Si (OCH 3 ) 3, nC 3 H 7 Si (OC 2 H 5 ) 3, i- C 3 H 7 Si (OCH 3 ) 3, nC 4 H 9 Si (OCH 3 ) 3, nC 4 H9Si (OC2H 5 ) 3 , iC 4 H 9 Si (OCH 3 ) 3, nC 4 H 9 Si (OC 2 H 5 ) 3, nC 5 HnSi (OCH 3 ) 3, nC 5 HiiSi (OC 2 H 5
  • CioH 2i Si (OCH 3 ) 3 nC-ioH 2i Si (OC 2 H 5 ) 3 , i-CioH 2i Si (OCH 8 ) 3 , i-CioH 2i Si (OC 2 H 5 ) 3 , n-
  • Compounds according to formula (Ila) or (Mb) can be, for example, methylalkoxysiloxanes, ethylalkyoxysiloxanes, propylalkoxysiloxanes, butylalkoxysiloxanes, hexylalkoxysiloxanes, phenylalkoxysiloxanes, octylalkyoxysiloxanes or hexadecylalkoxylsiloxanes, alkoxy preferably being methoxy or methoxy or methoxy.
  • composition according to the invention has further additives.
  • the composition according to the invention particularly if it has one or more mineral building materials, preferably cement, particularly preferably cement and sand or gravel, has further concrete or mortar additives, in particular selected from shrinkage reducing agents, defoamers, flow agents, accelerators, retarders, air entraining agents, Rheology modifies fillers / additives and / or fibers.
  • the mass fraction of all other additives in the total composition is preferably from 0 to 40% by weight, preferably 0.5 to 25% by weight and particularly preferably 1 to 10% by weight.
  • compositions according to the invention preferably have polycarboxylate ethers, lignosulfonates, melamine sulfonates, casein or polynaphthalene sulfonates or mixtures of two or more of the compounds mentioned as flow agents. If flow agents are present in the composition according to the invention, their proportion in the composition according to the invention is preferably from 0.01 to 2% by weight, preferably from 0.05 to 0.5% by weight.
  • compositions according to the invention preferably have monoalcohols, glycols, preferably neopentylglycol, alkanediols, polyoxyalkylene glycols, aminoalcohols or polyoxyalkylenes or mixtures of two or more of the compounds mentioned as shrinkage reducing agents.
  • the compositions according to the invention preferably have mineral oil, polyether, acetylene compounds or vegetable oils or mixtures of two or more of the compounds mentioned.
  • the compositions of the invention preferably have CaCh, carbonates, preferably Na 2 CO 3 or U 2 CO 3 , aluminates, preferably tricalcium aluminate, CaO or sulfates or mixtures of two or more of the compounds mentioned as accelerators. If the compositions according to the invention have Ca-containing substances as accelerators, the addition of calcium sources can optionally be dispensed with.
  • the retarders of the compositions according to the invention preferably have carbohydrates, preferably monosaccharides, disaccharides, oligosaccharides and / or polysaccharides, lignin sulfonates, hydroxycarboxylic acids, phosphates, tetraborates, citric acid, tartaric acid, tartrates or citrates or mixtures of two or more of the compounds mentioned.
  • Some of the retarders may also be suitable as an enrichment medium. If such retarders are used, their proportion is added to the mass fraction of enrichment medium.
  • compositions according to the invention preferably have betaine, natural resins, preferably root resins or tall resin, lauryl sulfate, sulfosuccinates, Fatty acids, sulfonates, soaps or fatty soaps or mixtures of two or more of the compounds mentioned.
  • Some of the air entraining agents such as e.g. B. sulfosuccinates and fatty acids may optionally also be suitable as an enrichment medium. If such air entraining agents are used, their proportion is added to the mass fraction of enrichment medium.
  • shrinkage reducers, defoamers, accelerators, retarders and / or air entraining agents are present in the composition according to the invention, the sum of their proportions in the composition according to the invention is preferably from 0.01 to 10% by weight, preferably from 0.02 to 3% by weight. and particularly preferably from 0.05 to 0.5% by weight.
  • compositions according to the invention preferably have starch, cellulose ether, PVAL, guar gum, xanthan gum, welan gum, alginates, agar, polyethylene oxides, bentonite or polyacrylamides or mixtures of two or more of the compounds mentioned as rheology modifiers.
  • compositions according to the invention preferably have fly ash, limestone powder, blast furnace slag, rock powder, micro- or nanosilica or mixtures of two or more of the compounds mentioned.
  • compositions according to the invention preferably have steel fibers, plastic fibers (PAN), glass fibers or carbon fibers or mixtures of two or more of the fibers mentioned.
  • compositions according to the invention can also, especially if they have no solvent, carrier materials, such as z. B. in Wiktor and Jonkers, Smart Mater. Struct. 25 (2016) “Bacteria-based concrete: from concept to market”.
  • compositions according to the invention can be used for the production of construction products or structures.
  • the compositions according to the invention are preferably used in the process described below for the production of construction products.
  • the process according to the invention for the production of construction products, preferably based on mineral building materials, is characterized in that at least one of the compositions according to the invention mentioned above is used in the production.
  • the construction product to be produced using the method according to the invention is preferably mortar, mortar-based components / products, reinforced concrete, concrete, a (steel) concrete part, a concrete block, a roof tile, a brick or a gas concrete block.
  • the composition according to the invention can be used before or after the completion of the construction product or the building.
  • the composition according to the invention is preferably used before the completion of the construction product or the building. If the composition according to the invention is used before completion of the construction product or the building, the addition is preferably carried out in a mixing process, particularly preferably during a mixing process which must also be used in the production of the construction product from conventional components.
  • the composition is preferably applied by applying the composition to the surface of the building product or building.
  • the application can be carried out by spraying or brushing construction products or structures with the composition; in the case of smaller construction products, such as. B. bricks or precast concrete, the immersion of the construction products in the composition can be suitable for application.
  • the composition can be used free of cement, preferably as a liquid, preferably as a sprayable, composition or as a cement-containing composition, e.g. B. in the form of mortar.
  • Compositions according to the invention which are free of cement are preferably used for the surface treatment of construction products or structures which have small cracks, preferably cracks with a gap width of less than 1 mm. In the case of larger cracks, a composition which has cement is preferably used.
  • the phosphate or carbonate precipitate, in particular calcium carbonate, formed by the composition according to the invention can have pores, contact surfaces, joints, Partially or completely fill or close gaps, cracks or cavities in or on the component.
  • the composition according to the invention is suitable as a mass additive for use in concrete, precast concrete elements, concrete blocks or fibreboard, or as a mass additive for use in other mineral building materials which, depending on the composition of the mass additive, form phosphate or carbonate precipitates, in particular calcium carbonate, or other mineral structures enable.
  • the composition according to the invention is also for subsequent treatment of concrete, prefabricated concrete parts, concrete blocks, concrete fiber boards or buildings. It can be applied subsequently, for example by spraying or brushing. It is also possible that only individual components of the composition, such as, for example, a nutrient solution or other auxiliaries for activating the microorganisms already present, are subsequently applied.
  • the composition according to the invention also leads to a targeted metabolism of other additives (preferably additives which are present in the component without further function after curing, such as concrete plasticizers) or other specifically introduced substances (in order, for example, to provide a targeted pore structure) generate) or penetrating substances with damage potential for the component (eg concrete attacking substances).
  • additives preferably additives which are present in the component without further function after curing, such as concrete plasticizers
  • other specifically introduced substances in order, for example, to provide a targeted pore structure
  • penetrating substances with damage potential for the component eg concrete attacking substances.
  • composition according to the invention for coating or combined use with built-in parts, reinforcement or sealing elements in concrete, mortar or other, preferably cementitious building materials, for example in connection with sealing membranes (for example incorporated in a coating or in a nonwoven fabric) to avoid backwardness to be remedied by the formation of mineral structures, in connection with a waterproofing membrane in order to bring about a targeted "growing together" of the waterproofing layer and the component, in connection with joint seals in order to remedy potential problems caused by the formation of mineral structures or in connection with other built-in parts, to make a tight connection.
  • the installation parts are preferably selected from spacers, formwork anchors, pipe penetrations or other penetrations.
  • composition according to the invention in conjunction with metallic, but preferably non-metallic reinforcement and reinforcement elements.
  • non-metallic reinforcement and Reinforcing elements can lead to an inadequate adhesive bond and thus a potential backwardness of water or a limited power transmission.
  • a sufficient adhesive bond can be achieved by the composition according to the invention, and thus the backwardness of water can be reduced or the power transmission can be improved.
  • Non-metallic reinforcement and reinforcement elements are, for example, polymeric reinforcement elements, such as fiber-reinforced epoxy resin systems, or glass or carbon fibers.
  • the composition according to the invention can also be a component of the fiber size.
  • the composition according to the invention is preferably suitable for filling or sealing gaps in multi-layer systems, for example in tunnel construction or in triple walls in precast concrete construction.
  • the composition is preferably used for filling processing-related cavities, pores, capillaries or construction joints.
  • the composition according to the invention can also be used in conjunction with modular components (stones, prefabricated parts, plugs, etc.) in order to enable specific "growing together" to form a connected component.
  • composition according to the invention can also be used as part of a coating or sealing system (e.g. mineral sealing slurry etc.), as part of an injection system for crack, joint, floor, rock or cavity injection, as part of a post-treatment agent (to quickly seal the superficial To enable pore structure and thus reduce the evaporation of water), as part of a grout, for example to prevent capillary rising moisture or to be used as part of an adhesive system for targeted “growing together” of components.
  • a coating or sealing system e.g. mineral sealing slurry etc.
  • an injection system for crack, joint, floor, rock or cavity injection as part of a post-treatment agent (to quickly seal the superficial To enable pore structure and thus reduce the evaporation of water)
  • a post-treatment agent to quickly seal the superficial To enable pore structure and thus reduce the evaporation of water
  • a grout for example to prevent capillary rising moisture or to be used as part of an adhesive system for targeted “growing together” of components.
  • the composition according to the invention can be liquid or solid. In solid form, it is preferably in particulate form, in particular as a powder or granulate. This makes the composition easier to handle, in particular easier to pour and easier to dose.
  • the particles, in particular the powder or granules, can be encapsulated or coated. Polyvinyl alcohol is particularly suitable as an encapsulation or coating agent.
  • the composition is preferably in unencapsulated or uncoated form.
  • the composition according to the invention can be in the form of one, two or more components. System can be used. As a two- or multi-component system, the two or more components are stored separately and only mixed with one another shortly before or during use.
  • the composition according to the invention is preferably used in structures such as sewage treatment plants and sewers, residential and administrative buildings (preferably basements), infrastructure structures (e.g. bridges, tunnels, troughs, concrete streets, parking garages and parking garages), hydraulic structures (e.g. locks and port facilities), energy structures (e.g. wind turbines) , Cooling towers, biogas plants, pumped storage plants).
  • structures such as sewage treatment plants and sewers, residential and administrative buildings (preferably basements), infrastructure structures (e.g. bridges, tunnels, troughs, concrete streets, parking garages and parking garages), hydraulic structures (e.g. locks and port facilities), energy structures (e.g. wind turbines) , Cooling towers, biogas plants, pumped storage plants).
  • the use of the composition according to the invention is particularly preferred in the case of components which come into contact with the ground or are exposed to the weather, such as, for example, outer walls or foundations.
  • FIG. 1 shows the side view of the test specimen with a crack, 200 times enlarged, 18 days after the block from example 4a was broken in two. It can be seen that the crack has healed.
  • the photograph in FIG. 2 shows a 100-fold magnification of the fracture surface 69 days after the block from example 4a was broken in two. It can be seen that Ca carbonate has formed in the crack.
  • the picture in FIG. 3 shows a 100-fold enlargement of the fracture surface 0 days after the block from example 4b was broken in two. It can be seen that no healing has yet taken place.
  • the image in FIG. 4 shows the side view of the test specimen from Example 4c in a 100-fold magnification, 69 days after the block from Example 4c was broken in two. It can be seen that Ca carbonate has formed in the crack.
  • 5a and 5b show the crack in a magnification of 30 and 100 times, in the test specimen of example 3 (E).
  • Bending tensile strengths were determined based on DIN EN 12390-5 (3-point bending test with central load application).
  • Karsten tube test Water absorption was measured using a water penetration tester, also called a Karst tube, as described in “MEASUREMENT OF WATER ABSORPTION UNDER LOW PRESSURE; RILEM TEST METHOD NO. 1 1.4, horizontal application ”(https: //www.m- testco.com/files/pages/Rilem%20Test.pdf)
  • spores 32315 Spores of Bacillus subtilis (DSM 32315), hereinafter also referred to as spores 32315,
  • DSM 10 Bacillus subtilis spores
  • WA CIT (Evonik Resource Efficiency GmbH), an aqueous emulsion of multifunctional silanes, hereinafter also referred to as WA CIT
  • Example 1 Checking the compatibility of microorganisms with water repellents and shrinkage reducing agents.
  • the strains Bacillus subtilis (DSM 10) and Bacillus pseudofirmus (DSM 8715) were examined for compatibility with water repellents and shrinkage reducing agents.
  • the medium used for Bacillus subtilis was a mixture of 3 g meat extract, 5 g peptone from casein and 1000 ml _ adjusted to pH 7 using HCI / NaOH and for Bacillus pseudofirmus (DSM 8715) adjusted to pH 7 using Na sesquicarbonate. distilled water used.
  • a preculture was prepared for both strains: For this purpose, an inoculation loop of the spores was placed in a culture tube with 8 ml of the respective medium and left overnight in a hood shaker at 30 ° C. and 200 revolutions per minute. Furthermore, aqueous stock solutions with a concentration of Protectosil ® WS405 (water repellent) of 500 g / L or with a concentration of neopentyl glycol (shrinkage reducing agent) of 280 g / L were produced.
  • Protectosil ® WS405 water repellent
  • neopentyl glycol wrinkleage reducing agent
  • the main cultures were then left in a hood shaker for 4 days at 30 ° C. and 200 revolutions per minute. The observation of the change in turbidity was then used to determine whether the microorganisms were growing in the presence of water repellents and / or shrinkage reducing agents.
  • Example 2 Production of test specimens
  • the recipe for the production of standard mortar with a mortar composition according to EN 480-1 was used.
  • 450 g of Milke ® classic CEM I 52.5 N cement and 1350 g of CEN standard sand according to EN 196-1 were homogenized to a dry mix using a Hobart mortar mixer.
  • the homogenized dry mix was added to the mortar mixer within 30 seconds at a slow mixing speed (level 1).
  • 450 g of water were added within 30 seconds and the entire mortar mixture was mixed for a further 60 seconds at a slow speed.
  • the amount of water was chosen so that the weight ratio of water to cement is 1 to 2.
  • the mortar was then mixed at high speed (level 2) for 60 seconds.
  • the total mixing time was 3 minutes and 30 seconds.
  • test specimens from Example 2 were broken apart in the middle and treated either with a composition from the prior art (S) or with a composition (E) according to the invention which, however, did not contain a hydrophobizing agent, at the breaking edges and then put back together.
  • Treatment with the Liquid Repair System - ER7 (state-of-the-art product) is carried out in such a way that 90 g of component A in 500 mL water (temperature of the water 40 ° C) for solution A and 50 g of component B in 250 mL Water (temperature of water 40 ° C) for solution B was processed according to the instructions for use. Then solution A was sprayed twice onto the breaking edges in accordance with the instructions for use and then solution B once.
  • the treatment with the composition according to the invention was carried out by first stirring 15 g of Tryptic Soy Broth with 50 g of Bacillus subtilis DSM 32315 spores in 500 mL of water and spraying this solution onto the broken edges.
  • test specimens were fixed with a Teflon tape.
  • the test specimens were stored in a water bath at room temperature.
  • the test specimens were immersed 0.5 cm in the water bath, the crack was not under the water surface.
  • the crack was sprayed with water at regular 2 day intervals.
  • Example 4 Preparation of test specimens with the addition of healing additives.
  • the test specimens were produced as described in Example 2. However, the aqueous proportion of the added compositions was added to the mixing water and taken into account accordingly, so that all mixtures for the production of test specimens were produced with the same water to cement ratio in order to ensure the comparability of the results.
  • the substances used and the appearance of the mortar mixtures during processing are given in Table 1 a.
  • Table 1 a Mortar mixtures (without water content) and their appearance
  • the hydrophobizing effect of the silane additive (silicon compound which has at least one Si atom, at least one C atom and at least one H atom)
  • the reduction in capillary water absorption over a period of 24 h and 14 days was determined.
  • the test specimen 4a biologicalmass only
  • test specimens are dabbed lightly with a dry cloth (test setup analogous to EN 480-5, but with different measuring periods and without 3-fold determination). The percentage reduction in water absorption was determined using the following method:
  • the water absorption of the test specimens can be significantly reduced by adding a silicon compound which has at least one Si atom, at least one C atom and at least one H atom (a hydrophobizing agent).
  • test specimens were broken into two parts, put back on the broken edges and then standing upright in a bowl with water (approx. 5 mm Water level) for 69 days so that the crack was immersed in the water on one side.
  • Example 5 Influence of microorganism concentration and Ca source The aim was to determine what influence the mass of microorganisms and additional Ca source has on the bending strength and water absorption of the test specimen.
  • Test specimens with different combinations of biomass, tryptic soy broth, Ca source and water repellant (WS405) were used. The test specimens were produced as described in Example 2. However, the components and concentrations given in Table 2a were used. Calcium lactate hydrate was used as the Ca source.
  • Example 5i represents the reference sample.
  • a spore mixture was first produced by diluting 0.68 g of spores 32315 with 50 ml of tap water, which accordingly had a concentration of 0.0136 g (spores 32315) / ml.
  • test specimens After 28 days of storage at 23 ° C. and 50% atmospheric humidity (standard climate) of the test specimens, the flexural tensile strengths of the test specimens and the reduction in water absorption after 24 h were measured. To determine the water absorption after 24 hours, the test specimens were stored in a standing water bath. They immersed about 5 cm in the water. After 24 h, it was determined gravimetrically how much water the test specimens had absorbed. The results are shown in Table 2b. Table 2b: Results of the test
  • the aim of this experiment is to investigate the effects of surface treatment with a solution of water repellent, spores, tryptic soy broth, calcium lactate and water.
  • a Wilsontlin coater (Bosch) with a fluidized bed attachment served as the device for coating / encapsulation.
  • the biomass was placed in the Wilsontlin coater, sprayed with an aqueous PVA solution and then dried.
  • a solution of 5% by weight of PVA was used as the PVA solution Kuraray Poval® 4-88 and 5% by weight Kuraray Poval® 8018 in water.
  • the total concentration of PVA was accordingly 10% by weight based on the total mass of the solution.
  • aqueous PVA solution (10% by weight PVA) were applied to 500 g of biomass. This corresponds to a proportion of 13 wt .-% PVA based on the total mass of the dry product.

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Abstract

La présente invention concerne une composition comprenant au moins un micro-organisme qui peut former un précipité de phosphate ou de carbonate dans un milieu alcalin, et au moins une source de calcium, la composition étant caractérisée en ce qu'elle comporte au moins un composé de silicium qui comporte au moins un atome de Si, au moins un atome de C et au moins un atome de H. L'invention concerne en outre un procédé de fabrication de produits de construction, une composition correspondante étant utilisée durant la fabrication.
EP19735576.1A 2018-07-11 2019-07-08 Composition comprenant au moins un micro-organisme et son utilisation Withdrawn EP3820828A1 (fr)

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CN114133157A (zh) * 2021-12-20 2022-03-04 西京学院 一种基于厌氧微生物的混凝土裂缝修复方法
WO2023158717A1 (fr) * 2022-02-17 2023-08-24 Worcester Polytechnic Institute Matériau de construction enzymatique pour la réparation offrant résistance à la corrosion et durabilité

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DE4122263C1 (fr) 1991-07-05 1993-02-25 Degussa Ag, 6000 Frankfurt, De
JPH06122539A (ja) * 1992-10-09 1994-05-06 Shin Etsu Chem Co Ltd セメント混和剤およびその製造方法
JP2005022913A (ja) * 2003-07-01 2005-01-27 Shin Etsu Chem Co Ltd モルタル又はコンクリート組成物
DE102005004871A1 (de) 2005-02-03 2006-08-10 Degussa Ag Hochviskose wässrige Emulsionen von funktionellen Alkoxysilanen, deren kondensierten Oligomeren, Organopolysiloxanen, deren Herstellung und Verwendung zur Oerflächenbehandlung von anorganischen Materialien
DE102005004872A1 (de) 2005-02-03 2006-08-10 Degussa Ag Wässrige Emulsionen von funktionellen Alkoxysilanen und deren kondensierten Oligomeren, deren Herstellung und Verwendung zur Oberflächenbehandlung
EP2082999A1 (fr) * 2008-01-23 2009-07-29 Technische Universiteit Delft Agent de auto-réparation dans des matériaux et structures a base de ciment, et procédé pour sa préparation
DE102008063965C5 (de) * 2008-12-19 2019-02-21 Evonik Degussa Gmbh Hydrophobierte zementhaltige Zusammensetzungen
NL2004520C2 (en) 2010-04-07 2011-10-11 Univ Delft Tech HEALING AGENT FOR SELF-HEALING CEMENTIOUS MATERIALS.
US8518177B2 (en) * 2010-12-07 2013-08-27 Jadavpur University, West Bengal Materials and methods for the production of green concrete
DE202011110267U1 (de) 2011-11-22 2013-03-26 Evonik Degussa Gmbh Zusammensetzung olefinisch funktionalisierter Siloxanoligomere basierend auf Alkoxysilanen
DE202011110266U1 (de) 2011-11-22 2013-03-26 Evonik Degussa Gmbh Besonders VOC-arme Gemische olefinisch funktionalisierter Siloxanoligomere basierend auf Alkoxysilanen
KR101343086B1 (ko) * 2012-05-30 2014-01-16 한국과학기술원 무기계 그라우팅 재료의 제조방법과 무기계 그라우팅 재료를 이용한 콘크리트 균열 보수방법
NL2010818C2 (en) 2013-05-17 2014-11-24 Univ Delft Tech Bio-based repair method for concrete.
CN103342484B (zh) * 2013-07-18 2014-09-03 东南大学 一种用于修复水泥基材料裂缝的方法
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EP3165512A1 (fr) 2015-11-06 2017-05-10 Technische Universität München Composition à base de ciment hybride modifiée présentant une meilleure résistance au mouillage
BR112018074616A2 (pt) 2016-05-31 2019-04-02 Evonik Degussa Gmbh cepa de bacillus subtilis com atividade probiótica
US20180072632A1 (en) * 2016-09-14 2018-03-15 Iowa State University Research Foundation, Inc. Silica encapsulation of ureolytic bacteria for self-healing of cement-based composites
JP6361053B2 (ja) * 2016-12-27 2018-07-25 京畿大学校産学協力団 コンクリート保護コーティング材

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CN112424141A (zh) 2021-02-26
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