CN107986717B - High-wear-resistance concrete material and preparation method and application thereof - Google Patents
High-wear-resistance concrete material and preparation method and application thereof Download PDFInfo
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- CN107986717B CN107986717B CN201810000675.4A CN201810000675A CN107986717B CN 107986717 B CN107986717 B CN 107986717B CN 201810000675 A CN201810000675 A CN 201810000675A CN 107986717 B CN107986717 B CN 107986717B
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- dimethyl sulfoxide
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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
- C04B28/04—Portland cements
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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 discloses a high-wear-resistance concrete material and a preparation method and application thereof, wherein the concrete material comprises the following raw materials in parts by weight: 45-55 parts of Portland cement, 23-31 parts of fine sand, 11-19 parts of polystyrene resin, 7-15 parts of cellulose diacetate, 15-25 parts of dimethyl sulfoxide and 18-26 parts of vermiculite. Mixing and crushing vermiculite and cellulose diacetate, then mixing with dimethyl sulfoxide solution, heating, sealing and stirring, centrifugally separating to obtain precipitate, washing and drying to obtain pretreated vermiculite; adding polystyrene resin, ball milling, mixing with Portland cement and fine sand, and stirring uniformly; pouring, vibrating and curing to obtain the product. The concrete has higher compressive strength and rupture strength, obviously improves the VC value, the anti-permeability grade, the frost resistance strength, the ultimate tensile strength, the adiabatic temperature rise, the chemical corrosion resistance and the like, effectively improves the anti-abrasion capability, effectively reduces the shrinkage deformation of the concrete, improves the anti-cracking capability and has excellent comprehensive performance.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a high-wear-resistance concrete material and a preparation method and application thereof.
Background
Concrete is a general term for engineering composite materials in which aggregate is cemented into a whole by a cementing material. The term concrete generally refers to cement as a cementing material and sand and stone as aggregate; the cement concrete, also called as common concrete, is obtained by mixing with water (which may contain additives and admixtures) according to a certain proportion and stirring, and is widely applied to civil engineering. However, the common cement concrete has the defects of low compression and fracture resistance, low environmental corrosion resistance and durability, poor wear resistance and the like. Concrete is the most important building material in hydraulic engineering, especially large hydraulic engineering. The requirements on the material are extremely high, and the material is required to have better impermeability, heat resistance and low shrinkage; when the paint is used at a part flushed by high-speed water flow, the paint is required to have scouring resistance, wear resistance, cavitation resistance and the like; in cold regions, particularly in water level fluctuation regions, high frost resistance and corrosion resistance are required. Vermiculite is rarely used in the existing concrete material, and is easy to absorb water in water and expand at high temperature because of the adsorbability, so that the performance of the concrete is unstable and the wear-resisting strength is reduced when the vermiculite is applied in the field.
Disclosure of Invention
The invention aims to provide a high-wear-resistance concrete material, a preparation method and application thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-wear-resistance concrete material comprises the following raw materials in parts by weight: 45-55 parts of Portland cement, 23-31 parts of fine sand, 11-19 parts of polystyrene resin, 7-15 parts of cellulose diacetate, 15-25 parts of dimethyl sulfoxide and 18-26 parts of vermiculite.
As a further scheme of the invention: the high-wear-resistance concrete material comprises the following raw materials in parts by weight: 48-52 parts of Portland cement, 25-29 parts of fine sand, 13-17 parts of polystyrene resin, 9-13 parts of cellulose diacetate, 18-22 parts of dimethyl sulfoxide and 20-24 parts of vermiculite.
As a further scheme of the invention: the high-wear-resistance concrete material comprises the following raw materials in parts by weight: 50 parts of Portland cement, 27 parts of fine sand, 15 parts of polystyrene resin, 11 parts of cellulose diacetate, 20 parts of dimethyl sulfoxide and 22 parts of vermiculite.
A preparation method of a high-wear-resistance concrete material comprises the following steps:
1) mixing dimethyl sulfoxide with water with the mass of 4-5 times that of the dimethyl sulfoxide to prepare a dimethyl sulfoxide solution;
2) mixing and crushing vermiculite and cellulose diacetate, sieving the mixture through a sieve of 100-150 meshes, then mixing the mixture with a dimethyl sulfoxide solution, heating the mixture to 75-78 ℃, sealing and stirring the mixture at the temperature for 1.8-2 hours, centrifugally separating the mixture, taking precipitate, washing and drying the precipitate to obtain pretreated vermiculite;
3) adding polystyrene resin into the pretreated vermiculite, ball-milling for 45-50min, mixing with portland cement and fine sand, and stirring uniformly; pouring, vibrating and curing to obtain the product.
As a further scheme of the invention: in the step 2), the stirring speed is 200-220 r/min.
As a further scheme of the invention: in the step 2), the centrifugation speed is 3000r/min, and the centrifugation time is 10-20 min.
As a further scheme of the invention: in the step 3), the stirring speed is 120 r/min.
As a further scheme of the invention: in the step 3), the mass ratio of ball materials is 5:1 during ball milling.
Another object of the invention is to provide the use of said concrete material for the preparation of civil engineering materials.
As a further scheme of the invention: the civil engineering includes hydraulic engineering.
Compared with the prior art, the invention has the beneficial effects that:
the concrete material prepared by adopting the raw materials and the preparation process has higher compressive strength and flexural strength, obviously improves the VC value, the anti-permeability grade, the frost resistance strength, the ultimate tensile strength, the heat insulation temperature rise, the chemical corrosion resistance and other aspects, effectively improves the anti-abrasion capability, effectively reduces the drying shrinkage deformation of the concrete, improves the crack resistance, and has excellent comprehensive performance. The preparation method disclosed by the invention is simple in preparation process, environment-friendly, pollution-free, obvious in energy-saving and environment-friendly benefits, widely applied to the civil engineering fields of harbor engineering, hydraulic dam engineering, nuclear power engineering and the like with higher requirements on concrete, and particularly suitable for environments with higher requirements on erosion resistance and crack resistance of concrete, such as hydraulic engineering drainage buildings and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
In the embodiment of the invention, the high-wear-resistance concrete material comprises the following steps: 45kg of Portland cement, 23kg of fine sand, 11kg of polystyrene resin, 7kg of cellulose diacetate, 15kg of dimethyl sulfoxide and 18kg of vermiculite.
And mixing dimethyl sulfoxide with water with the mass of 4 times that of the dimethyl sulfoxide to obtain a dimethyl sulfoxide solution. Mixing and crushing vermiculite and cellulose diacetate, sieving with a 100-mesh sieve, then mixing with a dimethyl sulfoxide solution, heating to 75 ℃, sealing and stirring at the temperature for 1.8h, wherein the stirring speed is 200 r/min. Centrifugally separating, taking the precipitate, washing and drying to obtain pretreated vermiculite; the centrifugation speed is 3000r/min, and the centrifugation time is 10 min. Adding polystyrene resin into the pretreated vermiculite, and carrying out ball milling for 45min, wherein the ball-material mass ratio is 5:1 during ball milling. Then mixing with Portland cement and fine sand, and stirring uniformly; the stirring speed was 120 r/min. Pouring, vibrating and curing to obtain the product.
Example 2
In the embodiment of the invention, the high-wear-resistance concrete material comprises the following steps: 55kg of Portland cement, 31kg of fine sand, 19kg of polystyrene resin, 15kg of cellulose diacetate, 25kg of dimethyl sulfoxide and 26kg of vermiculite.
And mixing the dimethyl sulfoxide with water which is 5 times of the mass of the dimethyl sulfoxide to obtain a dimethyl sulfoxide solution. Mixing and crushing vermiculite and cellulose diacetate, sieving the mixture by a 150-mesh sieve, then mixing the mixture with a dimethyl sulfoxide solution, heating the mixture to 78 ℃, sealing and stirring the mixture at the temperature for 2 hours, wherein the stirring speed is 220 r/min. Centrifugally separating, taking the precipitate, washing and drying to obtain pretreated vermiculite; the centrifugation speed is 3000r/min, and the centrifugation time is 20 min. Adding polystyrene resin into the pretreated vermiculite, and carrying out ball milling for 50min, wherein the mass ratio of balls to materials is 5:1 during ball milling. Then mixing with Portland cement and fine sand, and stirring uniformly; the stirring speed was 120 r/min. Pouring, vibrating and curing to obtain the product.
Example 3
In the embodiment of the invention, the high-wear-resistance concrete material comprises the following steps: 48kg of Portland cement, 25kg of fine sand, 13kg of polystyrene resin, 9kg of cellulose diacetate, 18kg of dimethyl sulfoxide and 20kg of vermiculite.
And mixing the dimethyl sulfoxide with water which is 5 times of the mass of the dimethyl sulfoxide to obtain a dimethyl sulfoxide solution. Mixing and crushing vermiculite and cellulose diacetate, sieving the mixture by a 150-mesh sieve, then mixing the mixture with a dimethyl sulfoxide solution, heating the mixture to 76 ℃, sealing and stirring the mixture at the temperature for 1.9 hours, wherein the stirring speed is 220 r/min. Centrifugally separating, taking the precipitate, washing and drying to obtain pretreated vermiculite; the centrifugation speed is 3000r/min, and the centrifugation time is 15 min. Adding polystyrene resin into the pretreated vermiculite, and carrying out ball milling for 50min, wherein the mass ratio of balls to materials is 5:1 during ball milling. Then mixing with Portland cement and fine sand, and stirring uniformly; the stirring speed was 120 r/min. Pouring, vibrating and curing to obtain the product.
Example 4
In the embodiment of the invention, the high-wear-resistance concrete material comprises the following steps: 52kg of Portland cement, 29kg of fine sand, 17kg of polystyrene resin, 13kg of cellulose diacetate, 22kg of dimethyl sulfoxide and 24kg of vermiculite.
And mixing the dimethyl sulfoxide with water which is 5 times of the mass of the dimethyl sulfoxide to obtain a dimethyl sulfoxide solution. Mixing and crushing vermiculite and cellulose diacetate, sieving the mixture by a 150-mesh sieve, then mixing the mixture with a dimethyl sulfoxide solution, heating the mixture to 76 ℃, sealing and stirring the mixture at the temperature for 1.9 hours, wherein the stirring speed is 220 r/min. Centrifugally separating, taking the precipitate, washing and drying to obtain pretreated vermiculite; the centrifugation speed is 3000r/min, and the centrifugation time is 15 min. Adding polystyrene resin into the pretreated vermiculite, and carrying out ball milling for 50min, wherein the mass ratio of balls to materials is 5:1 during ball milling. Then mixing with Portland cement and fine sand, and stirring uniformly; the stirring speed was 120 r/min. Pouring, vibrating and curing to obtain the product.
Example 5
In the embodiment of the invention, the high-wear-resistance concrete material comprises the following steps: 50kg of Portland cement, 27kg of fine sand, 15kg of polystyrene resin, 11kg of cellulose diacetate, 20kg of dimethyl sulfoxide and 22kg of vermiculite.
And mixing the dimethyl sulfoxide with water which is 5 times of the mass of the dimethyl sulfoxide to obtain a dimethyl sulfoxide solution. Mixing and crushing vermiculite and cellulose diacetate, sieving the mixture by a 150-mesh sieve, then mixing the mixture with a dimethyl sulfoxide solution, heating the mixture to 76 ℃, sealing and stirring the mixture at the temperature for 1.9 hours, wherein the stirring speed is 220 r/min. Centrifugally separating, taking the precipitate, washing and drying to obtain pretreated vermiculite; the centrifugation speed is 3000r/min, and the centrifugation time is 15 min. Adding polystyrene resin into the pretreated vermiculite, and carrying out ball milling for 50min, wherein the mass ratio of balls to materials is 5:1 during ball milling. Then mixing with Portland cement and fine sand, and stirring uniformly; the stirring speed was 120 r/min. Pouring, vibrating and curing to obtain the product.
Comparative example 1
The formulation and preparation were identical to those of example 5, except that dimethyl sulfoxide was not included.
Comparative example 2
The formulation and preparation were identical to those of example 5, except that no vermiculite was included.
Comparative example 3
Directly mixing the raw materials, adding the other raw materials added in the embodiment 5, and uniformly stirring; pouring, vibrating and curing to obtain the product. The raw material amounts are the same as in example 5.
Example 6
The concrete material of the invention has excellent performance in civil engineering such as water conservancy engineering, and the performance test is as follows.
The concrete materials produced in examples 1-5 of the present invention and comparative examples 1-3 were tested using industry test standards known in the art. The results are shown in tables 1 and 2 and compared with commercially available concrete.
TABLE 1 determination of the compressive and flexural Strength of the concrete materials according to the invention
As can be seen from Table 1, the concrete materials prepared in examples 1 to 5 of the present invention have significantly better compressive strength and flexural strength than the concrete materials corresponding to comparative examples 1 to 3 and the existing commercially available concrete, which indicates that the concrete materials of the present invention have the above significant effects by using the above raw materials and preparation process.
TABLE 2 test results of the Properties of the concrete materials of the present invention
The concrete materials prepared in the embodiments 1 to 5 of the invention are obviously superior to the concrete materials corresponding to the comparative examples 1 to 3 and the existing commercial concrete in the aspects of VC value, impermeability grade, frost resistance, ultimate tensile strength, adiabatic temperature rise and the like. The concrete material of the invention adopts the raw materials and the preparation process to have the obvious effect.
The abrasion resistance strength test was also carried out by the annular ring method and the underwater steel ball method in DL/T5150-2001 "test procedure for Hydraulic concrete", as shown in Table 3.
TABLE 3
The concrete materials prepared in the embodiments 1 to 5 of the invention are obviously superior to the concrete materials corresponding to the comparative examples 1 to 3 and the existing commercial concrete in the aspect of impact and abrasion resistance. The concrete material of the invention adopts the raw materials and the preparation process to have the obvious effect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The high-wear-resistance concrete material is characterized by comprising the following raw materials in parts by weight: 45-55 parts of Portland cement, 23-31 parts of fine sand, 11-19 parts of polystyrene resin, 7-15 parts of cellulose diacetate, 15-25 parts of dimethyl sulfoxide, 18-26 parts of vermiculite and 4-5 times of water in mass of the dimethyl sulfoxide.
2. The high-wear-resistance concrete material as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 48-52 parts of Portland cement, 25-29 parts of fine sand, 13-17 parts of polystyrene resin, 9-13 parts of cellulose diacetate, 18-22 parts of dimethyl sulfoxide and 20-24 parts of vermiculite.
3. The high-wear-resistance concrete material as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 50 parts of Portland cement, 27 parts of fine sand, 15 parts of polystyrene resin, 11 parts of cellulose diacetate, 20 parts of dimethyl sulfoxide and 22 parts of vermiculite.
4. A method for preparing a highly wear resistant concrete material according to any of claims 1-3, characterized in that it comprises the following steps:
1) mixing dimethyl sulfoxide with water with the mass of 4-5 times that of the dimethyl sulfoxide to prepare a dimethyl sulfoxide solution;
2) mixing and crushing vermiculite and cellulose diacetate, sieving the mixture through a sieve of 100-150 meshes, then mixing the mixture with a dimethyl sulfoxide solution, heating the mixture to 75-78 ℃, sealing and stirring the mixture at the temperature for 1.8-2 hours, centrifugally separating the mixture, taking precipitate, washing and drying the precipitate to obtain pretreated vermiculite;
3) adding polystyrene resin into the pretreated vermiculite, ball-milling for 45-50min, mixing with portland cement and fine sand, and stirring uniformly; pouring, vibrating and curing to obtain the product.
5. The method for preparing the concrete material with high wear resistance as claimed in claim 4, wherein in the step 2), the stirring speed is 200-220 r/min.
6. The method for preparing the concrete material with high wear resistance according to claim 4, wherein in the step 2), the centrifugal speed is 3000r/min, and the centrifugal time is 10-20 min.
7. The method for preparing a concrete material with high wear resistance according to claim 4, wherein in the step 3), the stirring speed is 120 r/min.
8. The method for preparing the high-wear-resistance concrete material according to claim 4, wherein in the step 3), the mass ratio of the balls to the materials during ball milling is 5: 1.
9. Use of the concrete material as claimed in any one of claims 1 to 3 for the preparation of civil engineering materials.
10. Use of a concrete material according to claim 9 in the preparation of civil engineering materials, characterised in that the civil engineering comprises hydraulic engineering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810000675.4A CN107986717B (en) | 2018-01-02 | 2018-01-02 | High-wear-resistance concrete material and preparation method and application thereof |
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| CN201810000675.4A CN107986717B (en) | 2018-01-02 | 2018-01-02 | High-wear-resistance concrete material and preparation method and application thereof |
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| CN107986717A CN107986717A (en) | 2018-05-04 |
| CN107986717B true CN107986717B (en) | 2020-05-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5162060A (en) * | 1989-12-14 | 1992-11-10 | Rohm And Haas Company | Polymer-modified cements with improved chemical resistance |
| FR2992960B1 (en) * | 2012-07-06 | 2015-07-24 | Lafarge Sa | LIGHT CONCRETE WITH LOW THERMAL CONDUCTIVITY |
| CN104743995A (en) * | 2015-03-19 | 2015-07-01 | 中国水利水电第七工程局有限公司 | High-strength concrete cementitious composition and high-strength concrete thereof |
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