CN115717045B - Concrete microcrack repairing material and preparation method thereof - Google Patents
Concrete microcrack repairing material and preparation method thereof Download PDFInfo
- Publication number
- CN115717045B CN115717045B CN202211361921.1A CN202211361921A CN115717045B CN 115717045 B CN115717045 B CN 115717045B CN 202211361921 A CN202211361921 A CN 202211361921A CN 115717045 B CN115717045 B CN 115717045B
- Authority
- CN
- China
- Prior art keywords
- epoxy resin
- component
- liquid
- repairing material
- curing agent
- 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.)
- Active
Links
- 239000000463 material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000003822 epoxy resin Substances 0.000 claims abstract description 82
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 82
- 239000007788 liquid Substances 0.000 claims abstract description 75
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 230000001580 bacterial effect Effects 0.000 claims abstract description 30
- 239000000839 emulsion Substances 0.000 claims abstract description 30
- 239000007787 solid Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004202 carbamide Substances 0.000 claims abstract description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011575 calcium Substances 0.000 claims abstract description 7
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims abstract description 6
- 230000001089 mineralizing effect Effects 0.000 claims abstract description 5
- 238000005303 weighing Methods 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 21
- 230000033558 biomineral tissue development Effects 0.000 claims description 19
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 238000009630 liquid culture Methods 0.000 claims description 8
- 229960005069 calcium Drugs 0.000 claims description 6
- 241000193386 Lysinibacillus sphaericus Species 0.000 claims description 5
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 5
- 235000015097 nutrients Nutrition 0.000 claims description 5
- 230000008439 repair process Effects 0.000 claims description 5
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims description 4
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 claims description 4
- 235000011092 calcium acetate Nutrition 0.000 claims description 4
- 239000001639 calcium acetate Substances 0.000 claims description 4
- 229960005147 calcium acetate Drugs 0.000 claims description 4
- 229940044172 calcium formate Drugs 0.000 claims description 4
- 235000019255 calcium formate Nutrition 0.000 claims description 4
- 239000004281 calcium formate Substances 0.000 claims description 4
- MKJXYGKVIBWPFZ-UHFFFAOYSA-L calcium lactate Chemical compound [Ca+2].CC(O)C([O-])=O.CC(O)C([O-])=O MKJXYGKVIBWPFZ-UHFFFAOYSA-L 0.000 claims description 4
- 239000001527 calcium lactate Substances 0.000 claims description 4
- 229960002401 calcium lactate Drugs 0.000 claims description 4
- 235000011086 calcium lactate Nutrition 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 39
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 20
- 244000005700 microbiome Species 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 20
- 238000000151 deposition Methods 0.000 description 6
- 229940079593 drug Drugs 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- -1 compound calcium carbonate Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a concrete crack repairing material and a preparation method thereof, wherein the concrete crack repairing material is prepared by mixing a component A and a component B, and the concrete crack repairing material comprises the following components: the component A is a mixed solution of aqueous epoxy resin emulsion and bacterial liquid, and the component B is a mixed solution of epoxy resin curing agent and mineralized liquid; the mineralizing liquid is formed by mixing a calcium source and urea. The invention uses the technology of generating calcium carbonate by microorganism induction to be used in combination with the water-based epoxy resin material, and the generated calcium carbonate can weaken the volume shrinkage generated after the water-based epoxy resin is repaired to a certain extent. And the technical problems of viscosity increase and permeability reduction caused by adding a large amount of solid particles into the aqueous epoxy resin emulsion can be avoided.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a concrete microcrack repairing material and a preparation method thereof.
Background
The concrete structure is affected by external factors, the interior or the surface of the concrete structure is gradually deteriorated, and cracking is one of common concrete deterioration phenomena. If not repaired in time, the concrete cracks will further deteriorate until the concrete member loses its load-bearing capacity.
Compared with the conventional concrete crack repairing material and technology, the patent CN 104196131B discloses a method for plugging a crack of a concrete cast-in-situ slab floor or a bottom plate by using microorganism deposited calcium carbonate, and proposes a pressure pouring mode to inject an aqueous solution required by the microorganism repairing technology into the concrete crack for repairing. The technology for repairing concrete cracks by microorganisms has the advantages of environmental protection, permeability, strong operability and the like. However, the microorganism-induced calcium carbonate deposition technique is affected by various factors, and is a slow deposition process, and the sinking speed is too high, and the produced calcium carbonate is loose and low in strength. Therefore, this technique has a technical problem of a long repair cycle.
Disclosure of Invention
In view of the above, the present invention provides a concrete crack repairing material and a preparation method thereof, so as to solve the technical problem of long repairing period in the microorganism-induced calcium carbonate deposition technology provided in the above background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The invention discloses a concrete crack repairing material, which is prepared by mixing a component A and a component B, wherein:
the component A is a mixed solution of aqueous epoxy resin emulsion and bacterial liquid, and the component B is a mixed solution of epoxy resin curing agent and mineralized liquid;
The mineralizing liquid is formed by mixing a calcium source and urea.
As a further scheme of the invention: the A component is calculated according to 100 parts, wherein the weight ratio of the aqueous epoxy resin emulsion to the bacterial liquid is 70-90:30-10.
As a further scheme of the invention: the aqueous epoxy resin emulsion in the component A is one of EP-2340W, BH644, EP-5024 and DS-5100.
As a further scheme of the invention: the bacterial liquid in the component A is prepared from bacillus sphaericus and a liquid culture solution according to a volume ratio of 1:8, configuring; the liquid culture solution is prepared from 2g of sodium bicarbonate, 50g of nutrient broth and 1L of distilled water.
As a further scheme of the invention: the epoxy resin curing agent in the component B is one of EH-2100W, BH, MG-50 and 900S.
As a further scheme of the invention: the mass ratio of the aqueous epoxy resin emulsion to the epoxy resin curing agent is 100: 133. 100: 100. 100:55 or 100:20.
As a further scheme of the invention: the calcium source is at least one of calcium nitrate, calcium formate, calcium lactate and calcium acetate.
As a further scheme of the invention: the mass ratio of the mineralization liquid to the bacterial liquid is (1-3): 1.
The invention also discloses a preparation method of the concrete micro-crack repairing material, which comprises the following steps:
s1, 70-90 parts by weight of: 30-10, weighing the aqueous epoxy resin emulsion and the bacterial liquid, and stirring uniformly at normal temperature to obtain a component A;
S2, mixing a calcium source and urea according to a molar concentration ratio of (1-1.2): 1, mixing to obtain mineralized liquid;
s3, weighing the epoxy resin curing agent and the mineralizing liquid, and uniformly stirring at normal temperature to obtain a component B;
s4, mixing the component A and the component B, calculating the total solid content of the aqueous epoxy resin and the epoxy resin curing agent in the mixture, and controlling the total solid content to 40% by adding water and uniformly stirring to obtain the concrete micro-crack repairing material.
In a further scheme, in the step S2, the mass ratio of the aqueous epoxy resin emulsion to the epoxy resin curing agent is 100: 133. 100: 100. 100:55 or 100:20, the mass ratio of the mineralization liquid to the bacterial liquid is (1-3): 1.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the waterborne epoxy resin is used as a cementing agent, so that loose calcium carbonate particles generated by rapid induction of microorganisms can be cemented, and the repairing period is shortened to a great extent on the premise of ensuring the mechanical properties of the repairing material.
2. The invention uses the technology of generating calcium carbonate by microorganism induction to be used in combination with the water-based epoxy resin material, and the generated calcium carbonate can weaken the volume shrinkage generated after the water-based epoxy resin is repaired to a certain extent.
3. The microbial liquid and the mineralization liquid are respectively placed in A, B components before use, A, B components are mixed before use and then poured into concrete cracks for reaction to generate calcium carbonate particles, and compared with the conventional operation, the repairing material disclosed by the patent can directly compound solid calcium carbonate particles into aqueous epoxy resin emulsion, so that the technical problems of viscosity increase and permeability reduction caused by adding a large amount of solid particles into the aqueous epoxy resin emulsion can be avoided.
Detailed Description
In order that the invention may be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated below. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Specific information of the raw materials used in the following examples and comparative examples are as follows:
and (3) a component A:
Aqueous epoxy resin emulsion, EP-2340W, available from Zhan Xin resin (China Co., ltd.);
aqueous epoxy resin emulsion, BH644, available from dongguan guan chemical industry, inc;
Aqueous epoxy resin emulsion, EP-5024, available from Haoge insulating materials Co., ltd;
Aqueous epoxy resin emulsion, DS-5100, available from Shanghai Cheng New Material Co., ltd;
bacillus sphaericus LMG22257, belgium strain preservation center;
Sodium bicarbonate, purchased from the national drug group;
Nutrient broth, HB0108, purchased from Qingdao sea Bo biotechnology limited;
And the component B comprises the following components:
Epoxy resin curing agent EH-2100W, available from Zhan Xin resin (China);
Epoxy resin curing agent BH560, available from Toguan Guangdong chemical industry Co., ltd;
Epoxy resin curing agent MG-50, available from Haoge insulating materials Co., ltd;
Epoxy curing agent 900S, available from Shanghai Technetia novel materials Co., ltd
Calcium nitrate, purchased from the national drug group;
Calcium formate, purchased from the national drug group;
calcium lactate, purchased from the national drug group;
calcium acetate, purchased from the national drug group;
Urea, purchased from the national drug group.
Wherein the water-based epoxy resin emulsion is matched with an epoxy resin curing agent for use, and the proportion of the water-based epoxy resin emulsion to the epoxy resin curing agent is EP-2340W: EH-2100 w=100:133, bh644: bh560=1: 1, EP-5024: MG-50=5:1, ds-5100:900 s=100:55.
The bacterial liquid is made of self-made materials, and is prepared from bacillus sphaericus and liquid culture liquid according to the following ratio of 1:8, the volume ratio is configured; wherein the liquid culture medium is prepared from 2g of sodium bicarbonate, 50g of nutrient broth and 1L of distilled water.
It will be appreciated that the above raw material reagents are only examples of some embodiments of the invention, so that the technical solution of the invention is more clear, and it is not represented that the invention can only employ the above reagents, and the scope of the claims is in particular. In addition, "parts" described in examples and comparative examples refer to parts by weight unless otherwise specified.
Any range recited in the invention includes any numerical value between the endpoints and any sub-range of any numerical value between the endpoints or any numerical value between the endpoints.
The preparation of the components in the following examples and comparative examples was carried out at normal temperature.
Example 1
Preparing a component A: weighing 70 parts of aqueous epoxy resin emulsion EP-2340W and 30 parts of bacterial liquid, and uniformly stirring to obtain a component A;
And (3) preparing a component B: according to EP-2340W: EH-2100 W=100:133, and weighing the epoxy resin curing agent EH-2100W; preparing mineralization liquid according to the molar concentration of 6M/L of calcium nitrate and 5M/L of urea, and mixing the mineralization liquid with bacterial liquid according to the dosage of 3:1, weighing mineralized liquid, and finally uniformly stirring an epoxy resin curing agent and the mineralized liquid to obtain a component B;
and mixing the component A and the component B, calculating the total solid content of the aqueous epoxy resin and the epoxy resin curing agent in the mixture, and controlling the total solid content to 40% by adding water and uniformly stirring to obtain the concrete micro-crack repairing material.
Example 2
Preparing a component A: weighing 90 parts of aqueous epoxy resin emulsion BH644 and 10 parts of bacterial liquid, and uniformly stirring to obtain a component A;
And (3) preparing a component B: according to BH644: bh560=1: 1, weighing an epoxy resin curing agent BH560; preparing mineralization liquid according to the molar concentration of calcium formate 5M/L and urea 5M/L, and mixing the mineralization liquid with bacterial liquid according to the dosage of 1:1, weighing mineralized liquid, and uniformly stirring an epoxy resin curing agent and the mineralized liquid to obtain a component B;
and mixing the component A and the component B, calculating the total solid content of the aqueous epoxy resin and the epoxy resin curing agent in the mixture, and controlling the total solid content to 40% by adding water and uniformly stirring to obtain the concrete micro-crack repairing material.
Example 3
Preparing a component A: weighing 80 parts of aqueous epoxy resin emulsion EP-5024 and 20 parts of bacterial liquid, and uniformly stirring to obtain a component A;
And (3) preparing a component B: according to EP-5024: proportioning MG-50=5:1, and weighing an epoxy resin curing agent MG-50; preparing mineralized liquid according to the molar concentration of 5.5M/L of calcium lactate and 5M/L of urea, and preparing mineralized liquid according to the using amount of the mineralized liquid and the using amount of bacterial liquid of 2:1, weighing mineralized liquid, and uniformly stirring an epoxy resin curing agent and the mineralized liquid to obtain a component B;
and mixing the component A and the component B, calculating the total solid content of the aqueous epoxy resin and the epoxy resin curing agent in the mixture, and controlling the total solid content to 40% by adding water and uniformly stirring to obtain the concrete micro-crack repairing material.
Example 4
Preparing a component A: weighing 80 parts of aqueous epoxy resin emulsion DS-5100, 20 parts of bacterial liquid, and uniformly stirring to obtain a component A;
and (3) preparing a component B: according to DS-5100:900 s=100:55, weighing the epoxy resin curing agent 900S; preparing mineralization liquid according to the molar concentration of 6M/L of calcium acetate and 5M/L of urea, and preparing mineralization liquid according to the usage amount of the mineralization liquid and the usage amount of bacterial liquid of 2:1, weighing mineralized liquid, and uniformly stirring an epoxy resin curing agent and the mineralized liquid to obtain a component B;
and mixing the component A and the component B, calculating the total solid content of the aqueous epoxy resin and the epoxy resin curing agent in the mixture, and controlling the total solid content to 40% by adding water and uniformly stirring to obtain the concrete micro-crack repairing material.
Comparative example 1
Preparing a component A: weighing 100 parts of aqueous epoxy resin emulsion EP-2340W to obtain a component A;
and (3) preparing a component B: according to EP-2340W: weighing the epoxy resin curing agent EH-2100W according to the ratio of EH-2100 W=100:133 to obtain a component B;
and mixing the component A and the component B, calculating the total solid content of the aqueous epoxy resin and the epoxy resin curing agent in the mixture, and controlling the total solid content to 40% by adding water and uniformly stirring to obtain the concrete micro-crack repairing material.
Comparative example 2
Preparing a component A: weighing 70 parts of aqueous epoxy resin emulsion EP-2340W,30 parts of 30% solid nano calcium carbonate dispersion liquid, and uniformly stirring to obtain a component A;
and (3) preparing a component B: according to EP-2340W: weighing the epoxy resin curing agent EH-2100W according to the ratio of EH-2100 W=100:133 to obtain a component B;
and mixing the component A and the component B, calculating the total solid content of the aqueous epoxy resin and the epoxy resin curing agent in the mixture, and controlling the total solid content to 40% by adding water and uniformly stirring to obtain the concrete micro-crack repairing material.
Comparative example 3
Preparing a component A: weighing 100 parts of bacterial liquid to obtain a component A;
And (3) preparing a component B: preparing mineralization liquid according to the molar concentration of 6M/L of calcium nitrate and 5M/L of urea, and preparing mineralization liquid according to the usage amount of the mineralization liquid and the usage amount of bacterial liquid of 2:1, weighing mineralized liquid to obtain a component B;
And mixing the component A and the component B to obtain the concrete micro-crack repairing material.
Comparative example 4
Preparing a component A: preparing liquid culture solution according to 2g of sodium bicarbonate, 50g of nutrient broth and 1L of distilled water, preparing bacillus sphaericus and the liquid culture solution into bacterial solution according to the volume ratio of 1:50, and weighing 100 parts of bacterial solution to obtain a component A;
And (3) preparing a component B: preparing mineralization liquid according to the molar concentration of 0.6M/L of calcium nitrate and 0.5M/L of urea, and preparing mineralization liquid according to the usage amount of the mineralization liquid and the usage amount of bacterial liquid of 2:1, weighing mineralized liquid to obtain a component B;
And mixing the component A and the component B to obtain the concrete micro-crack repairing material.
The above examples 1 to 4 and comparative examples 1 to 2 were subjected to the related test according to the test items and test methods or criteria shown in Table 1, and the test results are shown in Table 2.
Table 1 test items, test methods and standards
Table 2 test results
From the test results in table 2, the concrete microcrack repairing material has good mechanical properties and extremely short repairing period.
From the comparative data analysis of example 1 and comparative example 1, it is understood that the shrinkage of the aqueous epoxy resin material can be significantly reduced by the use of the aqueous epoxy resin repair material in combination with the microorganism-induced calcium carbonate deposition material. Whereas in comparative example 1, only the aqueous epoxy resin was used for repair, resulting in a large shrinkage of the final material, a small adhesive strength, and easy debonding from the matrix.
From the comparative data analysis of examples 1 and 1,3 and 4, it is known that the repairing period can be effectively shortened on the premise of ensuring the mechanical properties of the repairing material after the aqueous epoxy resin repairing material is compounded in the microorganism-induced calcium carbonate deposition material.
From the comparison data of the example 1 and the comparative example 2, the addition of nano calcium carbonate in the aqueous epoxy resin emulsion in the comparative example 2 leads to a significant increase in viscosity, influences the pourability of the material, and is also disadvantageous for the mechanical properties of the material. Therefore, in the embodiment 1 of the present application, the microorganism is selected to induce the formation of calcium carbonate, and the reason for using the compound calcium carbonate material is not the reason.
In example 1, compared with comparative examples 3 and 4, the viscosity of the materials is greatly reduced without adding the aqueous epoxy resin emulsion and the epoxy resin curing agent in comparative examples 3 and 4, and concrete cracks are overflowed during pouring of the materials, so that waste is caused. And the consumption of bacterial liquid and mineralization liquid in the comparative example 4 is reduced, so that the repair period of the material is greatly increased to 35d.
Compared with comparative example 4, the concentration of the bacterial liquid and mineralized liquid used in comparative example 3 is higher, the rate of generating calcium carbonate by bacteria induction in the system is faster, the repairing period is short, but the technical problems of loose calcium carbonate deposition and poor mechanical property exist; the concentration of the bacterial liquid and the mineralized liquid selected in the comparative example 4 is low, the reaction rate of the system is slow, the repairing period is long, but the formed calcium carbonate material is compact in deposition and good in mechanical property.
Although the present disclosure describes embodiments, not every embodiment is described in terms of a single embodiment, and such description is for clarity only, and one skilled in the art will recognize that the embodiments described in the disclosure as a whole may be combined appropriately to form other embodiments that will be apparent to those skilled in the art.
Therefore, the above description is not intended to limit the scope of the application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (9)
1. A concrete crack repair material is characterized in that: the composition is prepared by mixing a component A and a component B, wherein: the component A is a mixed solution of aqueous epoxy resin emulsion and bacterial liquid, and the component B is a mixed solution of epoxy resin curing agent and mineralized liquid; the mineralizing liquid is formed by mixing a calcium source and urea;
The preparation method comprises the following steps:
s1, 70-90 parts by weight of: 30-10, weighing the aqueous epoxy resin emulsion and the bacterial liquid, and stirring uniformly at normal temperature to obtain a component A;
S2, mixing a calcium source and urea according to a molar concentration ratio of (1-1.2): 1, mixing to obtain mineralized liquid;
s3, weighing the epoxy resin curing agent and the mineralizing liquid, and uniformly stirring at normal temperature to obtain a component B;
S4, mixing the component A and the component B, calculating the total solid content of the aqueous epoxy resin and the epoxy resin curing agent in the mixture, and controlling the total solid content to 40% by adding water and uniformly stirring to obtain the concrete micro-crack repairing material.
2. A concrete crack-repairing material according to claim 1, characterized in that: the A component is calculated according to 100 parts, wherein the weight ratio of the aqueous epoxy resin emulsion to the bacterial liquid is 70-90:30-10.
3. A concrete crack-repairing material according to claim 1, characterized in that: the aqueous epoxy resin emulsion in the component A is one of EP-2340W, BH644, EP-5024 and DS-5100.
4. A concrete crack-repairing material according to claim 1, characterized in that: the bacterial liquid in the component A is prepared from bacillus sphaericus and a liquid culture solution according to a volume ratio of 1:8, configuring; the liquid culture solution is prepared from 2g of sodium bicarbonate, 50g of nutrient broth and 1L of distilled water.
5. A concrete crack-repairing material according to claim 1, characterized in that: the epoxy resin curing agent in the component B is one of EH-2100W, BH, MG-50 and 900S.
6. A concrete crack-repairing material according to claim 1, characterized in that: the mass ratio of the aqueous epoxy resin emulsion to the epoxy resin curing agent is 100: 133. 100: 100. 100:55 or 100:20.
7. A concrete crack-repairing material according to claim 1, characterized in that: the calcium source is at least one of calcium nitrate, calcium formate, calcium lactate and calcium acetate.
8. A concrete crack-repairing material according to claim 1, characterized in that: the mass ratio of the mineralization liquid to the bacterial liquid is (1-3): 1.
9. A concrete crack-repairing material according to claim 1, characterized in that: in the step S4, the mass ratio of the aqueous epoxy resin emulsion to the epoxy resin curing agent is 100: 133. 100: 100. 100:55 or 100:20, the mass ratio of the mineralization liquid to the bacterial liquid is (1-3): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211361921.1A CN115717045B (en) | 2022-11-02 | 2022-11-02 | Concrete microcrack repairing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211361921.1A CN115717045B (en) | 2022-11-02 | 2022-11-02 | Concrete microcrack repairing material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115717045A CN115717045A (en) | 2023-02-28 |
| CN115717045B true CN115717045B (en) | 2024-05-10 |
Family
ID=85254632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211361921.1A Active CN115717045B (en) | 2022-11-02 | 2022-11-02 | Concrete microcrack repairing material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115717045B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130134058A (en) * | 2012-05-30 | 2013-12-10 | 한국과학기술원 | Inorganic grouting material, method for manufacturing the same, and method for reparing crack of concrete |
| WO2015007011A1 (en) * | 2013-07-18 | 2015-01-22 | 东南大学 | Preparation method of self-repairing cement-based material |
| CN106699026A (en) * | 2016-12-02 | 2017-05-24 | 太原理工大学 | Crack self-remediation regenerated concrete based on urease production microorganism mineralization deposition and preparation method |
| CN108823198A (en) * | 2018-07-20 | 2018-11-16 | 山东科技大学 | A kind of microcapsules and preparation method thereof that may continue from repairing Leaking Stoppage in Coal Mine wind material crack |
| CN110078462A (en) * | 2019-05-20 | 2019-08-02 | 山西晟科微生物建材科技有限公司 | Microorganism selfreparing thermal insulation mortar for building and preparation method thereof |
| CN111470844A (en) * | 2020-04-17 | 2020-07-31 | 太原理工大学 | Concrete crack repairing material and method based on facultative aerobic mixed bacteria mineralization deposition |
| CN111548756A (en) * | 2020-06-16 | 2020-08-18 | 佛山市鑫新新材料有限公司 | Preparation method of calcium carbonate composite filler for epoxy resin adhesive |
| CN112779182A (en) * | 2020-12-31 | 2021-05-11 | 武汉工程大学 | Portable microorganism-induced calcium carbonate precipitation kit and application thereof in repairing early cracks of pavement base |
| CN113121145A (en) * | 2021-04-15 | 2021-07-16 | 同济大学 | Concrete crack self-repairing material based on microbial collaborative mineralization and application |
| CN114989781A (en) * | 2022-06-21 | 2022-09-02 | 宁夏大学 | Material and method for repairing concrete cracks by mineralization of super absorbent resin and mixed bacteria |
| CN115159884A (en) * | 2022-03-21 | 2022-10-11 | 江苏科技大学 | Microbial metal composite carrier, preparation method and application thereof |
| CN115246730A (en) * | 2021-12-29 | 2022-10-28 | 山东建筑大学 | Waterborne epoxy resin and microorganism modified superfine cement-based self-repairing waterproof plugging material |
-
2022
- 2022-11-02 CN CN202211361921.1A patent/CN115717045B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130134058A (en) * | 2012-05-30 | 2013-12-10 | 한국과학기술원 | Inorganic grouting material, method for manufacturing the same, and method for reparing crack of concrete |
| WO2015007011A1 (en) * | 2013-07-18 | 2015-01-22 | 东南大学 | Preparation method of self-repairing cement-based material |
| CN106699026A (en) * | 2016-12-02 | 2017-05-24 | 太原理工大学 | Crack self-remediation regenerated concrete based on urease production microorganism mineralization deposition and preparation method |
| CN108823198A (en) * | 2018-07-20 | 2018-11-16 | 山东科技大学 | A kind of microcapsules and preparation method thereof that may continue from repairing Leaking Stoppage in Coal Mine wind material crack |
| CN110078462A (en) * | 2019-05-20 | 2019-08-02 | 山西晟科微生物建材科技有限公司 | Microorganism selfreparing thermal insulation mortar for building and preparation method thereof |
| CN111470844A (en) * | 2020-04-17 | 2020-07-31 | 太原理工大学 | Concrete crack repairing material and method based on facultative aerobic mixed bacteria mineralization deposition |
| CN111548756A (en) * | 2020-06-16 | 2020-08-18 | 佛山市鑫新新材料有限公司 | Preparation method of calcium carbonate composite filler for epoxy resin adhesive |
| CN112779182A (en) * | 2020-12-31 | 2021-05-11 | 武汉工程大学 | Portable microorganism-induced calcium carbonate precipitation kit and application thereof in repairing early cracks of pavement base |
| CN113121145A (en) * | 2021-04-15 | 2021-07-16 | 同济大学 | Concrete crack self-repairing material based on microbial collaborative mineralization and application |
| CN115246730A (en) * | 2021-12-29 | 2022-10-28 | 山东建筑大学 | Waterborne epoxy resin and microorganism modified superfine cement-based self-repairing waterproof plugging material |
| CN115159884A (en) * | 2022-03-21 | 2022-10-11 | 江苏科技大学 | Microbial metal composite carrier, preparation method and application thereof |
| CN114989781A (en) * | 2022-06-21 | 2022-09-02 | 宁夏大学 | Material and method for repairing concrete cracks by mineralization of super absorbent resin and mixed bacteria |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115717045A (en) | 2023-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2119923C1 (en) | Method of producing quick-hydrating velanic resin and cement composition based on this resin | |
| CN108164208A (en) | A kind of nano silicon dioxide regeneration concrete and preparation method thereof | |
| CN110451877B (en) | Building waste concrete-brick mixed self-repairing concrete and preparation method thereof | |
| CN106082901B (en) | A kind of the green concrete prefabricated pile and construction method of strengthening soft foundation | |
| CN113213854B (en) | Fair-faced concrete produced from construction waste recycled aggregate and preparation method thereof | |
| CN109485338A (en) | A kind of construction refuse regenerated aggregate pavement brick and preparation method thereof | |
| CN113548841B (en) | Composite geopolymer mortar grouting material for reinforcing pavement base and preparation method thereof | |
| CN114368951B (en) | Concrete reinforcing material and preparation method and application thereof | |
| CN115246730B (en) | Water-based epoxy resin and microorganism modified superfine cement-based self-repairing waterproof plugging material | |
| CN112624655A (en) | Self-repairing cement-based material based on artificial functional carrier loaded with microorganisms and preparation method thereof | |
| CN114213095A (en) | Alkali-activated phosphogypsum self-leveling mortar | |
| CN115717045B (en) | Concrete microcrack repairing material and preparation method thereof | |
| CN111848048B (en) | Waste alkali residue recycling method and alkali residue self-repairing cement-based material prepared by same | |
| CN113200712A (en) | Iron-rich sludge/slag composite geopolymer and preparation method thereof | |
| POLAT et al. | A research for bacterial self-healing in metakaolin based geopolymer mortars | |
| CN110510941B (en) | Self-repairing bearing building block with recycled fine aggregate as carrier and preparation method thereof | |
| CN115124298B (en) | High-strength recycled aggregate concrete prepared from waste stone powder and preparation method thereof | |
| CN114988796B (en) | Recycled broken brick concrete based on interface enhancement and preparation method thereof | |
| CN110698218A (en) | Solid waste non-fired pottery sand and ultra-high performance concrete as well as preparation method and application thereof | |
| CN115536358A (en) | Industrial solid waste carbonization and solidification baking-free building block and preparation method thereof | |
| CN114573301A (en) | Preparation method of novel composite cement-based grouting material | |
| CN111825356A (en) | High-activity regeneration auxiliary cementing material based on physical ball milling and chemical modification synergistic reinforcement of brick-concrete powder and preparation method thereof | |
| CN109485358A (en) | A kind of Fe alloy slag modified concrete and preparation method thereof | |
| CN115626790B (en) | Biological material for rapidly repairing concrete microcracks and preparation method thereof | |
| CN113943125B (en) | Microbial agent crack repairing liquid for repairing blast furnace cracks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |