CN111925162A - Egg shell powder modified concrete and preparation method thereof - Google Patents
Egg shell powder modified concrete and preparation method thereof Download PDFInfo
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- CN111925162A CN111925162A CN202010803242.XA CN202010803242A CN111925162A CN 111925162 A CN111925162 A CN 111925162A CN 202010803242 A CN202010803242 A CN 202010803242A CN 111925162 A CN111925162 A CN 111925162A
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- eggshell powder
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- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to eggshell powder modified concrete and a preparation method thereof. The eggshell powder modified concrete consists of cement, water, yellow sand, eggshell powder, sodium silicate, boric acid and macadam. The eggshell powder modified concrete provided by the invention has excellent mechanical strength and low brittleness.
Description
Technical Field
The invention relates to the field of concrete, and particularly relates to eggshell powder modified concrete and a preparation method thereof.
Background
With the development of concrete technology, concrete technology and material technology are continuously improved, more and more new materials are used in concrete, and in recent years, concrete projects which do not reach the service life have serious quality problems. The great part of the problems is that the concrete quality is not qualified due to the inherent shortage of various raw materials, such as compressive strength and splitting tensile strength, which brings various quality hidden dangers. Therefore, researchers in the fields of agriculture, inorganic materials and construction have conducted interdisciplinary research on the combination of the solid waste recycling and the concrete field. Because of the high cost of the novel chemical materials, improvement is needed in the aspects of solving the quality defects of solid wastes and concrete in compressive strength and splitting tensile strength.
Disclosure of Invention
The invention aims to provide eggshell powder modified concrete which is prepared from cement, water, yellow sand, eggshell powder, sodium silicate, boric acid and macadam and has excellent mechanical strength and low brittleness.
The invention also aims to provide a preparation method of the eggshell powder modified concrete.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an eggshell powder modified concrete comprises cement, water, yellow sand, eggshell powder, sodium silicate, boric acid and macadam in a mass portion ratio of 15: 6-10: 21-33: 1-10: 0.5-3: 0.1-0.8: 36-50.
Preferably, the mass part ratio of the cement to the water to the yellow sand to the eggshell powder to the sodium silicate to the boric acid to the macadam is 15:8:26:5:1.5:0.4: 40.
The preparation method of the eggshell powder modified concrete comprises the following steps:
the method comprises the steps of placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3 hours, cooling and then crushing to 200 meshes, adding materials, sodium silicate and boric acid into a reaction kettle filled with 30 parts by mass of water, mixing and stirring at the stirring speed of 25 ℃ and 150-200 r/min for 25 minutes, transferring the materials into a freeze dryer, freeze-drying at-30 ℃ for 10 hours, crushing the products to 200 meshes, uniformly mixing the products with 5 parts by mass of water, adding the products, cement, residual water, yellow sand and gravel mixture into a stirring tank for uniform mixing, pouring concrete into a mold for molding, and obtaining the eggshell powder modified concrete.
The invention has the beneficial effects that:
the eggshell powder that adopts in this application has microporous structure, possess high porosity and specific surface, is favorable to adsorbing sodium silicate and boric acid in microporous structure, improves sodium silicate and boric acid dispersion homogeneity and porosity in the concrete, improves compressive strength and splitting tensile strength after the concrete shaping. Meanwhile, the eggshell powder modified by the sodium silicate and the boric acid is dispersed in concrete as a raw material after absorbing water, and the water consumption of the concrete can be reduced. Meanwhile, the problem of environmental pollution caused by littering and littering of the eggshells is solved.
Detailed Description
The following description of specific embodiments of the present invention is provided in connection with examples to facilitate a better understanding of the present invention. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention. Experimental procedures without specific conditions noted in the examples below, generally according to conditions conventional in the art or as suggested by the manufacturer; the raw materials, reagents and the like used are, unless otherwise specified, those commercially available from the conventional markets and the like. Any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Example 1
The preparation method of the eggshell powder modified concrete comprises the following steps:
weighing 5 parts of eggshell powder, placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3h, cooling, then crushing to 200 meshes, adding the materials, 1.5 parts of sodium silicate and 0.4 part of boric acid into a reaction kettle filled with 30 parts of water, mixing and stirring for 25min at the stirring speed of 180r/min at 25 ℃, transferring the materials into a freeze dryer, freeze-drying for 10h at-30 ℃, crushing the products to 200 meshes, uniformly mixing the products with 5 parts of water, then adding the products, 15 parts of cement, 3 parts of water, 26 parts of yellow sand and 40 parts of broken stone mixture into a stirring tank for uniform mixing, pouring concrete into a mold for molding, and thus obtaining the eggshell powder modified concrete.
Example 2
The preparation method of the eggshell powder modified concrete comprises the following steps:
weighing 1 part of eggshell powder, placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3h, cooling, then crushing to 200 meshes, adding the materials, 0.5 part of sodium silicate and 0.1 part of boric acid into a reaction kettle filled with 30 parts of water, mixing and stirring for 25min at the stirring speed of 150r/min at 25 ℃, transferring the materials into a freeze dryer, freeze-drying for 10h at-30 ℃, crushing the products to 200 meshes, uniformly mixing the products with 5 parts of water, then adding the products, 15 parts of cement, 1 part of water, 21 parts of yellow sand and 36 parts of gravel mixture into a stirring tank for uniform mixing, pouring concrete into a mold for molding, and thus obtaining the eggshell powder modified concrete.
Example 3
The preparation method of the eggshell powder modified concrete comprises the following steps:
weighing 10 parts of eggshell powder, placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3h, cooling, then crushing to 200 meshes, adding the material, 3 parts of sodium silicate and 0.8 part of boric acid into a reaction kettle filled with 30 parts of water, mixing and stirring at the stirring speed of 200r/min at 25 ℃ for 25min, transferring the material into a freeze dryer, freeze-drying at-30 ℃ for 10h, crushing the product to 200 meshes, uniformly mixing the product with 5 parts of water, then adding the product, 15 parts of cement, 5 parts of water, 33 parts of yellow sand and 50 parts of broken stone mixture into a stirring tank for uniformity, pouring concrete into a mold for molding, and thus obtaining the eggshell powder modified concrete.
Example 4
The preparation method of the eggshell powder modified concrete comprises the following steps:
weighing 2.5 parts of eggshell powder, placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3h, cooling, then crushing to 200 meshes, adding the materials, 0.9 part of sodium silicate and 0.3 part of boric acid into a reaction kettle filled with 30 parts of water, mixing and stirring for 25min at the stirring speed of 160r/min at 25 ℃, transferring the materials into a freeze dryer, freeze-drying for 10h at-30 ℃, crushing the products to 200 meshes, uniformly mixing the products with 5 parts of water, then adding the mixture of the products, 15 parts of cement, 1.3 parts of water, 23 parts of yellow sand and 38 parts of gravel into a stirring tank, uniformly mixing the mixture, and pouring concrete into a mold for molding to obtain the eggshell powder modified concrete.
Example 5
The preparation method of the eggshell powder modified concrete comprises the following steps:
weighing 3.6 parts of eggshell powder, placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3h, cooling, then crushing to 200 meshes, adding the material, 1.3 parts of sodium silicate and 0.4 part of boric acid into a reaction kettle filled with 30 parts of water, mixing and stirring for 25min at the stirring speed of 170r/min at 25 ℃, transferring the material into a freeze dryer, freeze-drying for 10h at-30 ℃, crushing the product to 200 meshes, uniformly mixing the product with 5 parts of water, then adding the product, 15 parts of cement, 2.8 parts of water, 26 parts of yellow sand and 39 parts of gravel mixture into a stirring tank, uniformly mixing the product with the cement, 2.8 parts of water, 26 parts of yellow sand and 39 parts of gravel, and pouring concrete into a mold for molding to obtain the eggshell powder.
Example 6
The preparation method of the eggshell powder modified concrete comprises the following steps:
weighing 5 parts of eggshell powder, placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3h, cooling, then crushing to 200 meshes, adding the material, 2 parts of sodium silicate and 0.6 part of boric acid into a reaction kettle filled with 30 parts of water, mixing and stirring at the stirring speed of 180r/min at 25 ℃ for 25min, transferring the material into a freeze dryer, freeze-drying at-30 ℃ for 10h, crushing the product to 200 meshes, uniformly mixing the product with 5 parts of water, then adding the product, 15 parts of cement, 3 parts of water, 27 parts of yellow sand and 46 parts of broken stone mixture into a stirring tank, uniformly mixing the product with 15 parts of cement, 3 parts of water, 27 parts of yellow sand and 46 parts of broken stone, and pouring concrete into a mold for molding to obtain.
Example 7
The preparation method of the eggshell powder modified concrete comprises the following steps:
weighing 9 parts of eggshell powder, placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3h, cooling, then crushing to 200 meshes, adding the materials, 2.7 parts of sodium silicate and 0.6 part of boric acid into a reaction kettle filled with 30 parts of water, mixing and stirring for 25min at the stirring speed of 190r/min at 25 ℃, transferring the materials into a freeze dryer, freeze-drying for 10h at-30 ℃, crushing the products to 200 meshes, uniformly mixing the products with 5 parts of water, then adding the products, 15 parts of cement, 4.5 parts of water, 31 parts of yellow sand and 46 parts of broken stone mixture into a stirring tank for uniform mixing, pouring concrete into a mold for molding, and thus obtaining the eggshell powder modified concrete.
Example 8
The preparation method of the eggshell powder modified concrete comprises the following steps:
weighing 8 parts of eggshell powder, placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3h, cooling, then crushing to 200 meshes, adding the materials, 2.3 parts of sodium silicate and 0.6 part of boric acid into a reaction kettle filled with 30 parts of water, mixing and stirring for 25min at the stirring speed of 180r/min at 25 ℃, transferring the materials into a freeze dryer, freeze-drying for 10h at-30 ℃, crushing the products to 200 meshes, uniformly mixing the products with 5 parts of water, then adding the products, 15 parts of cement, 3.8 parts of water, 31 parts of yellow sand and 44 parts of broken stone mixture into a stirring tank for uniform mixing, pouring concrete into a mold for molding, and thus obtaining the eggshell powder modified concrete.
Comparative example 1
In this comparative example, ground eggshell was not added, and the other components were prepared in the same manner as in example 1.
Comparative example 2
In this comparative example, the other components were prepared in the same manner as in example 1 without adding silicic acid.
Comparative example 3
In this comparative example, boric acid was not added, and the other components were prepared in the same manner as in example 1.
Comparative example 4
In the comparison example, common calcium carbonate is selected in the formula to replace the eggshell powder in the example 1, and other components and the preparation method are the same as the example 1.
The compressive strength and the cleavage tensile strength of the eggshell powder modified concrete prepared in the examples 1 to 8 and the comparative examples 1 to 4 were tested according to GB/T50081, and the test results are shown in the following tables 1 and 2.
TABLE 1 Performance parameters of the eggshell powder-modified concrete prepared in examples 1 to 8
TABLE 2 Properties of ground eggshell-modified concrete obtained in example 1 and comparative examples 1 to 4
As can be seen from the above tables 1 and 2, the compressive strength and the cleavage tensile strength of the eggshell powder modified concrete prepared in the embodiments of the present invention are superior, which indicates that the eggshell powder modified concrete prepared from the raw materials provided by the present invention has superior compressive strength and cleavage tensile strength; in contrast, the eggshell powder modified concrete prepared from the raw materials of each comparative example has poorer compressive strength and splitting tensile strength. In addition, the eggshell powder modified concrete prepared by the embodiments of the invention has better compressive strength and splitting tensile strength.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (3)
1. The eggshell powder modified concrete is characterized by comprising cement, water, yellow sand, eggshell powder, sodium silicate, boric acid and macadam in a mass portion ratio of 15: 6-10: 21-33: 1-10: 0.5-3: 0.1-0.8: 36-50.
2. The eggshell powder modified concrete of claim 1, wherein the mass part ratio of the cement, the water, the yellow sand, the eggshell powder, the sodium silicate, the boric acid and the macadam is 15:8:26:5:1.5:0.4: 40.
3. The method for preparing eggshell powder modified concrete according to any one of claims 1 to 2, which is characterized by comprising the following steps:
the method comprises the steps of placing the eggshell powder in a muffle furnace for heat treatment at 600 ℃ for 3 hours, cooling and then crushing to 200 meshes, adding materials, sodium silicate and boric acid into a reaction kettle filled with 30 parts by mass of water, mixing and stirring at the stirring speed of 25 ℃ and 150-200 r/min for 25 minutes, transferring the materials into a freeze dryer, freeze-drying at-30 ℃ for 10 hours, crushing the products to 200 meshes, uniformly mixing the products with 5 parts by mass of water, adding the products, cement, residual water, yellow sand and gravel mixture into a stirring tank for uniform mixing, pouring concrete into a mold for molding, and obtaining the eggshell powder modified concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010803242.XA CN111925162A (en) | 2020-08-11 | 2020-08-11 | Egg shell powder modified concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010803242.XA CN111925162A (en) | 2020-08-11 | 2020-08-11 | Egg shell powder modified concrete and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111925162A true CN111925162A (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010803242.XA Withdrawn CN111925162A (en) | 2020-08-11 | 2020-08-11 | Egg shell powder modified concrete and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN111925162A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05132349A (en) * | 1991-11-07 | 1993-05-28 | Shuichi Fujiwara | Cement plaster |
| CN105272042A (en) * | 2015-11-02 | 2016-01-27 | 中国三冶集团有限公司 | Anti-freezing and anti-cracking concrete |
-
2020
- 2020-08-11 CN CN202010803242.XA patent/CN111925162A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05132349A (en) * | 1991-11-07 | 1993-05-28 | Shuichi Fujiwara | Cement plaster |
| CN105272042A (en) * | 2015-11-02 | 2016-01-27 | 中国三冶集团有限公司 | Anti-freezing and anti-cracking concrete |
Non-Patent Citations (1)
| Title |
|---|
| BALAMURUGAN M等: "Influence of Egg Shell Ash on the Properties of Cement", 《IMPERIAL JOURNAL OF INTERDISCIPLINARY RESEARCH》 * |
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Application publication date: 20201113 |
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