CN104310875A - Poly (ethyl methacrylate)-steel fiber cement concrete and preparation method thereof - Google Patents
Poly (ethyl methacrylate)-steel fiber cement concrete and preparation method thereof Download PDFInfo
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- CN104310875A CN104310875A CN201410504648.2A CN201410504648A CN104310875A CN 104310875 A CN104310875 A CN 104310875A CN 201410504648 A CN201410504648 A CN 201410504648A CN 104310875 A CN104310875 A CN 104310875A
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Abstract
The invention discloses a preparation method of poly (ethyl methacrylate)-steel fiber cement concrete. The preparation method of the poly (ethyl methacrylate)-steel fiber cement concrete comprises the following steps: 1) laying steel fibers into a steel fiber mesh fabric; 2) mixing cement, sand, coal ash, poly (ethyl methacrylate) and water to obtain concrete slurry; 3) spraying the concrete slurry into a mould and then paving the steel fiber mesh fabric on concrete, then spraying the concrete slurry on the steel fiber mesh fabric and paving the steel fiber mesh fabric above the concrete slurry, and repeating the process until a crude concrete product is formed; and 4) heating the crude concrete product to obtain the poly (ethyl methacrylate)-steel fiber cement concrete. The poly (ethyl methacrylate)-steel fiber cement concrete has excellent mechanical strength.
Description
Technical field
The present invention relates to concrete field, particularly, relate to a kind of polyethyl acrylate-steel fiber reinforced concrete and this concrete preparation method.
Background technology
Concrete refers to the general designation being cemented to overall engineered composite material by gelling material by gathering materials.Usually concrete one word said refers to makes gelling material with cement, and sand, masonry gather materials and to coordinate by a certain percentage with water (can contain admixture and adulterant), and the cement concrete obtained through stirring, also claims normal concrete, and it is widely used in civil engineering work.To take place frequently area in earthquake, normal concrete is difficult to resist earthquake, often causes building collapse.
Summary of the invention
The object of this invention is to provide a kind of polyethyl acrylate-steel fiber reinforced concrete, this refractory concrete has excellent physical strength, and prepare this concrete method steps simple, raw material is easy to get simultaneously.
To achieve these goals, the invention provides a kind of preparation method of polyethyl acrylate-steel fiber reinforced concrete, it is characterized in that, described method comprises:
1) steel fiber is laid into the operation of steel fiber screen cloth;
2) cement, sand, flyash, polyethyl acrylate and aqueous phase are mixed with the operation of obtained concrete slurry;
3) sprayed into by concrete slurry then on concrete, lay steel fiber screen cloth to mould, then on steel fiber screen cloth, spray is established concrete slurry and above concrete slurry, is laid steel fiber screen cloth with this toward the operation being copied into concrete first product;
4) concrete first product is heated with the operation of obtained polyethyl acrylate-steel fiber reinforced concrete.
Present invention also offers a kind of polyethyl acrylate-steel fiber reinforced concrete, described polyethyl acrylate-steel fiber reinforced concrete is prepared from by above-mentioned method.
Pass through technique scheme, the present invention is by mixing cement, sand, flyash, polyethyl acrylate and aqueous phase to form concrete slurry, then concrete slurry being filled between steel fiber screen cloth heating simultaneously makes polymkeric substance melt to be immersed in concrete hole and make polymkeric substance and steel fiber form 3D grid at inside concrete with this, thus significantly enhances this concrete physical strength.Prepare this concrete method steps simple, raw material is easy to get simultaneously.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of preparation method of polyethyl acrylate-steel fiber reinforced concrete, described method comprises:
1) steel fiber is laid into the operation of steel fiber screen cloth;
2) cement, sand, flyash, polyethyl acrylate and aqueous phase are mixed with the operation of obtained concrete slurry;
3) sprayed into by concrete slurry then on concrete, lay steel fiber screen cloth to mould, then on steel fiber screen cloth, spray is established concrete slurry and above concrete slurry, is laid steel fiber screen cloth with this toward the operation being copied into concrete first product;
4) concrete first product is heated with the operation of obtained polyethyl acrylate-steel fiber reinforced concrete.
In the present invention, described polyethyl acrylate can be any one polyethyl acrylate known in the field, from cost and obtained concrete physical strength consider, preferably, the weight-average molecular weight of described polyethyl acrylate is 3000-5000.
Simultaneously, steel fiber screen cloth in the present invention can have multiple specific constructive form, the steel fiber forming steel fiber screen cloth also can any one known in the field, in order to make concrete, there is more excellent physical strength, preferably, the radial density of described steel fiber screen cloth is 4-5 root/cm, and latitudinal density is 2-3 root/cm.More preferably, the diameter that described steel fiber is is 1-5mm.
In addition, starting material sand required for the present invention can be medium sand, also can be fine sand, and in order to improve concrete physical strength further, preferably, the particle diameter of described sand is 5-10mm.
In like manner, described cement can be any one cement that the trade mark is greater than 32.5, and in order to make concrete have more excellent physical strength, preferably, described cement is No. 42.5 cement or No. 52.5 cement.
In addition, the proportioning of each raw material of concrete also can be selected in wide scope, but in order to make the concrete prepared, there is excellent physical strength, preferably, relative to the cement of 100 weight parts, the consumption of described cement is weight part, the consumption of described sand is 200-300 weight part, the consumption of described flyash is 150-180 weight part, and the consumption of described polyethyl acrylate is 20-30 weight part, and the consumption of described water is 30-60 weight part.
In the present invention, in the operation making concrete first product, the distance between two adjacent steel fiber screen cloths can be selected in wide scope, and preferably, the distance between two adjacent steel fiber screen cloths is 10-15cm;
In the operation of obtained concrete slurry, the temperature and time of described mixing also can be selected in wide scope, and preferably, the time of described mixing is the temperature 15-30 DEG C of 20-30min, described mixing.
In the operation of obtained polyethyl acrylate-steel fiber reinforced concrete, the time of described heating and temperature also can be selected in wide scope, and preferably, the temperature of described heating is 80-100 DEG C, and the time of described heating is 2-3h.
Present invention also offers a kind of polyethyl acrylate-steel fiber reinforced concrete, described polyethyl acrylate-steel fiber reinforced concrete is prepared from by above-mentioned method.
Below will be described the present invention by embodiment.In following examples, tensile strength, bending strength and resistance to impact shock parameter are recorded by the YE-2000 hydraulic concrete pressure testing machine of Shanghai by golden Instrument Ltd..
Steel fiber is the product of Changzhou Zhu Wei material of construction company limited, sand is the product of Jun Feng natural emery factory of Wenxi County, flyash is the product of Lingshou County along Jia Kuangchanpinjiagongchang, polyethyl acrylate is the product of Hangzhou Tuo Mu Science and Technology Ltd., and cement is the product of Anhui Conch Cement limited-liability company.
Embodiment 1
1) be that the steel fiber of 3mm lays into steel fiber screen cloth by diameter, wherein the radial density of steel fiber screen cloth is 4/cm, and latitudinal density is 2/cm;
2) be the sand 250kg of 8mm by No. 42.5 cement 100kg, particle diameter, flyash 160, weight-average molecular weight be 4000 polyethyl acrylate 25kg and the obtained concrete slurry of aqueous phase mixing;
3) concrete slurry is sprayed into mould, then on concrete, lay steel fiber screen cloth, then on steel fiber screen cloth, spray is established concrete slurry and above concrete slurry, is laid steel fiber screen cloth with this toward being copied into concrete first product, and the distance between two wherein adjacent steel fiber screen cloths is 13cm;
4) at 90 DEG C, by concrete first product heating 2.5h with the operation of obtained polyethyl acrylate-steel fiber reinforced concrete.
This concrete incipient crack tensile strength is 5.2N/mm
2, ultimate tensile strength is 9.1N/mm
2, First Cracking strength is 7.8N/mm
2, ultimate bending strength is 24N/mm
2, resistance to impact shock is 31kJ/m
2.
Embodiment 2
1) be that the steel fiber of 1mm lays into steel fiber screen cloth by diameter, wherein the radial density of steel fiber screen cloth is 4/cm, and latitudinal density is 2/cm;
2) be the sand 200kg of 5mm by No. 42.5 cement 100kg, particle diameter, flyash 150, weight-average molecular weight be 3000 polyethyl acrylate 20kg and the obtained concrete slurry of aqueous phase mixing;
3) concrete slurry is sprayed into mould, then on concrete, lay steel fiber screen cloth, then on steel fiber screen cloth, spray is established concrete slurry and above concrete slurry, is laid steel fiber screen cloth with this toward being copied into concrete first product, and the distance between two wherein adjacent steel fiber screen cloths is 10cm;
4) at 80 DEG C, by concrete first product heating 2h with the operation of obtained polyethyl acrylate-steel fiber reinforced concrete.
This concrete incipient crack tensile strength is 5.1N/mm
2, ultimate tensile strength is 8.9N/mm
2, First Cracking strength is 7.9N/mm
2, ultimate bending strength is 24.6N/mm
2, resistance to impact shock is 28kJ/m
2.
Embodiment 3
1) be that the steel fiber of 5mm lays into steel fiber screen cloth by diameter, wherein the radial density of steel fiber screen cloth is 5/cm, and latitudinal density is 3/cm;
2) be the sand 300kg of 10mm by No. 42.5 cement 100kg, particle diameter, flyash 180, weight-average molecular weight be 5000 polyethyl acrylate 30kg and the obtained concrete slurry of aqueous phase mixing;
3) concrete slurry is sprayed into mould, then on concrete, lay steel fiber screen cloth, then on steel fiber screen cloth, spray is established concrete slurry and above concrete slurry, is laid steel fiber screen cloth with this toward being copied into concrete first product, and the distance between two wherein adjacent steel fiber screen cloths is 15cm;
4) at 100 DEG C, by concrete first product heating 3h with the operation of obtained polyethyl acrylate-steel fiber reinforced concrete.
This concrete incipient crack tensile strength is 5.1N/mm
2, ultimate tensile strength is 8.8N/mm
2, First Cracking strength is 7.8N/mm
2, ultimate bending strength is 25N/mm
2, resistance to impact shock is 29kJ/m
2.
Embodiment 4
Carry out obtained polyethyl acrylate-steel fiber reinforced concrete according to the method for embodiment 1, difference is, the weight-average molecular weight of described polyethyl acrylate is 2000.
This concrete incipient crack tensile strength is 4.1N/mm
2, ultimate tensile strength is 7.4N/mm
2, First Cracking strength is 7.1N/mm
2, ultimate bending strength is 17N/mm
2, resistance to impact shock is 17kJ/m
2.
Embodiment 5
Carry out obtained polyethyl acrylate-steel fiber reinforced concrete according to the method for embodiment 1, difference is, the weight-average molecular weight of described polyethyl acrylate is 8000.
This concrete incipient crack tensile strength is 4.1N/mm
2, ultimate tensile strength is 7.8N/mm
2, First Cracking strength is 7.4N/mm
2, ultimate bending strength is 20N/mm
2, resistance to impact shock is 20kJ/m
2.
Embodiment 6
Carry out obtained polyethyl acrylate-steel fiber reinforced concrete according to the method for embodiment 1, difference is, the weight-average molecular weight of described polyethyl acrylate is 8000.
This concrete incipient crack tensile strength is 4.1N/mm
2, ultimate tensile strength is 7.8N/mm
2, First Cracking strength is 7.4N/mm
2, ultimate bending strength is 20N/mm
2, resistance to impact shock is 21kJ/m
2.
Embodiment 7
Carry out obtained polyethyl acrylate-steel fiber reinforced concrete according to the method for embodiment 1, difference is, described cement is No. 52.5 cement.
This concrete incipient crack tensile strength is 5.6N/mm
2, ultimate tensile strength is 8.6N/mm
2, First Cracking strength is 8.5N/mm
2, ultimate bending strength is 26N/mm
2, resistance to impact shock is 22kJ/m
2.
Comparative example 1
Carry out obtained polyethyl acrylate-steel fiber reinforced concrete according to the method for embodiment 1, difference is, does not use polyethyl acrylate.
This concrete incipient crack tensile strength is 3.4N/mm
2, ultimate tensile strength is 7.2N/mm
2, First Cracking strength is 6.4N/mm
2, ultimate bending strength is 13N/mm
2, resistance to impact shock is 15kJ/m
2.
Comparative example 2
Carry out obtained polyethyl acrylate-steel fiber reinforced concrete according to the method for embodiment 1, difference is, does not use steel fiber.
This concrete incipient crack tensile strength is 3.5N/mm
2, ultimate tensile strength is 6.9N/mm
2, First Cracking strength is 6.0N/mm
2, ultimate bending strength is 12N/mm
2, resistance to impact shock is 16kJ/m
2.
Comparative example 3
Carry out obtained polyethyl acrylate-steel fiber reinforced concrete according to the method for embodiment 1, difference is, it is netted but to be in disorderly mixed in concrete slurry that steel fiber does not lay into steel fiber.
This concrete incipient crack tensile strength is 3.8N/mm
2, ultimate tensile strength is 7.5N/mm
2, First Cracking strength is 6.5N/mm
2, ultimate bending strength is 14N/mm
2, resistance to impact shock is 15kJ/m
2.
Comparative example 4
Carry out obtained polyethyl acrylate-steel fiber reinforced concrete according to the method for embodiment 1, difference is, concrete first product does not heat but Directly Dried in Shadow.
This concrete incipient crack tensile strength is 3.3N/mm
2, ultimate tensile strength is 8.1N/mm
2, First Cracking strength is 6.5N/mm
2, ultimate bending strength is 14N/mm
2, resistance to impact shock is 16kJ/m
2.
By above-described embodiment and comparative example known, polyethyl acrylate-steel fiber reinforced concrete prepared by the present invention has excellent tensile strength, bending strength and resistance to impact shock, thus meets the needs of strong concrete.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a preparation method for polyethyl acrylate-steel fiber reinforced concrete, is characterized in that, described method comprises:
1) steel fiber is laid into the operation of steel fiber screen cloth;
2) cement, sand, flyash, polyethyl acrylate and aqueous phase are mixed with the operation of obtained concrete slurry;
3) sprayed into by concrete slurry then on concrete, lay steel fiber screen cloth to mould, then on steel fiber screen cloth, spray is established concrete slurry and above concrete slurry, is laid steel fiber screen cloth with this toward the operation being copied into concrete first product;
4) concrete first product is heated with the operation of obtained polyethyl acrylate-steel fiber reinforced concrete.
2. preparation method according to claim 1, wherein, the weight-average molecular weight of described polyethyl acrylate is 3000-5000.
3. preparation method according to claim 1 and 2, wherein, the radial density of described steel fiber screen cloth is 4-5 root/cm, and latitudinal density is 2-3 root/cm.
4. preparation method according to claim 1 and 2, wherein, the particle diameter of described sand is 5-10mm.
5. preparation method according to claim 1 and 2, wherein, the diameter that described steel fiber is is 1-5mm.
6. preparation method according to claim 1 and 2, wherein, described cement is No. 42.5 cement or No. 52.5 cement.
7. preparation method according to claim 1 and 2, wherein, relative to the cement of 100 weight parts, the consumption of described sand is 200-300 weight part, the consumption of described flyash is 150-180 weight part, the consumption of described polyethyl acrylate is 20-30 weight part, and the consumption of described water is 30-60 weight part.
8. preparation method according to claim 1 and 2, wherein, the distance between two adjacent steel fiber screen cloths is 10-15cm.
9. preparation method according to claim 1 and 2, wherein, in the operation of obtained concrete slurry, the time of described mixing is the temperature 15-30 DEG C of 20-30min, described mixing;
Preferably, in the operation of obtained polyethyl acrylate-steel fiber reinforced concrete, the temperature of described heating is 80-100 DEG C, and the time of described heating is 2-3h.
10. polyethyl acrylate-steel fiber reinforced concrete, is characterized in that, described polyethyl acrylate-steel fiber reinforced concrete is prepared from by the method described in any one in claim 1-9.
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| CN201410504648.2A CN104310875B (en) | 2014-09-26 | 2014-09-26 | Polyethyl acrylate-steel fiber reinforced concrete and preparation method thereof |
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| CN201410504648.2A CN104310875B (en) | 2014-09-26 | 2014-09-26 | Polyethyl acrylate-steel fiber reinforced concrete and preparation method thereof |
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| CN104310875A true CN104310875A (en) | 2015-01-28 |
| CN104310875B CN104310875B (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981299A (en) * | 2019-11-29 | 2020-04-10 | 长安大学 | High-performance geopolymer concrete and preparation method thereof |
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|---|---|---|---|---|
| EP0063505A1 (en) * | 1981-03-27 | 1982-10-27 | Jacques Desdoigts | Glass-fibre reinforced material based on cement, and process for its production |
| CN2863464Y (en) * | 2005-12-14 | 2007-01-31 | 赵成颐 | Polymerized aluminate porous fiber board |
| CN101508133A (en) * | 2009-03-16 | 2009-08-19 | 上海衡峰氟碳材料有限公司 | Fiber-reinforced composite material cement board and preparation method thereof |
| CN104032898A (en) * | 2014-06-03 | 2014-09-10 | 南京工业大学 | Three-dimensional fiber gird bar reinforced concrete structural part |
-
2014
- 2014-09-26 CN CN201410504648.2A patent/CN104310875B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063505A1 (en) * | 1981-03-27 | 1982-10-27 | Jacques Desdoigts | Glass-fibre reinforced material based on cement, and process for its production |
| CN2863464Y (en) * | 2005-12-14 | 2007-01-31 | 赵成颐 | Polymerized aluminate porous fiber board |
| CN101508133A (en) * | 2009-03-16 | 2009-08-19 | 上海衡峰氟碳材料有限公司 | Fiber-reinforced composite material cement board and preparation method thereof |
| CN104032898A (en) * | 2014-06-03 | 2014-09-10 | 南京工业大学 | Three-dimensional fiber gird bar reinforced concrete structural part |
Non-Patent Citations (1)
| Title |
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| 孙伟等: "纤维网片复合方式对纤维增强水泥基材料性能的影响", 《东南大学学报（自然科学版）》, vol. 33, no. 6, 30 November 2003 (2003-11-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981299A (en) * | 2019-11-29 | 2020-04-10 | 长安大学 | High-performance geopolymer concrete and preparation method thereof |
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