CN104310876B - Polyethyl acrylate-glass fibre cement concrete and preparation method thereof - Google Patents
Polyethyl acrylate-glass fibre cement concrete and preparation method thereof Download PDFInfo
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- CN104310876B CN104310876B CN201410504661.8A CN201410504661A CN104310876B CN 104310876 B CN104310876 B CN 104310876B CN 201410504661 A CN201410504661 A CN 201410504661A CN 104310876 B CN104310876 B CN 104310876B
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Abstract
The invention discloses a kind of concrete preparation method of polyethyl acrylate-glass fibre cement, described method includes: glass fibre 1) lays into the operation of glass screen cloth；2) cement, sand, flyash, polyethyl acrylate and aqueous phase are mixed the operation with prepared concrete slurry；3) being sprayed into mould by concrete slurry and then lay glass fiber net cloth on concrete, then on glass screen cloth, spray sets concrete slurry and lays glass screen cloth above concrete slurry with this past operation being copied into concrete first product；4) concrete first product is heated with the prepared concrete operation of polyethyl acrylate-glass fibre cement.This concrete has the mechanical strength of excellence.
Description
Technical field
The present invention relates to concrete field, in particular it relates to a kind of polyethyl acrylate-glass fibre cement concrete and this concrete preparation method.
Background technology
Concrete refers to the general designation of the engineered composite material being cemented to entirety by Binder Materials by gathering materials.Concrete one word generally said refers to makes Binder Materials with cement, and sand, masonry gather materials and coordinate by a certain percentage with water (can containing additive and admixture), the agitated and cement concrete that obtains, and also referred to as normal concrete, it is widely used in civil engineering.Taking place frequently area in earthquake, normal concrete is difficult to opposing earthquake, often results in building collapse.
Summary of the invention
It is an object of the invention to provide a kind of polyethyl acrylate-glass fibre cement concrete, this refractory concrete has the mechanical strength of excellence, prepares this concrete method step simple simultaneously, and raw material is easy to get.
To achieve these goals, the invention provides a kind of concrete preparation method of polyethyl acrylate-glass fibre cement, it is characterised in that described method includes:
1) glass fibre is laid into the operation of glass screen cloth；
2) cement, sand, flyash, polyethyl acrylate and aqueous phase are mixed the operation with prepared concrete slurry；
3) being sprayed into mould by concrete slurry and then lay glass fiber net cloth on concrete, then on glass screen cloth, spray sets concrete slurry and lays glass screen cloth above concrete slurry with this past operation being copied into concrete first product；
4) concrete first product is heated with the prepared concrete operation of polyethyl acrylate-glass fibre cement.
Present invention also offers a kind of polyethyl acrylate-glass fibre cement concrete, described polyethyl acrylate-glass fibre cement 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 polymer is melted heating simultaneously between concrete slurry filling to glass screen cloth to be immersed in concrete hole and make polymer and glass fibre form three-dimensional grid at inside concrete with this, thus significantly enhancing this concrete mechanical strength.Preparing this concrete method step simple, raw material is easy to get simultaneously.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention.
The invention provides a kind of concrete preparation method of polyethyl acrylate-glass fibre cement, described method includes:
1) glass fibre is laid into the operation of glass screen cloth；
2) cement, sand, flyash, polyethyl acrylate and aqueous phase are mixed the operation with prepared concrete slurry；
3) being sprayed into mould by concrete slurry and then lay glass fiber net cloth on concrete, then on glass screen cloth, spray sets concrete slurry and lays glass screen cloth above concrete slurry with this past operation being copied into concrete first product；
4) concrete first product is heated with the prepared concrete operation of polyethyl acrylate-glass fibre cement.
In the present invention, described polyethyl acrylate can be any polyethyl acrylate known in the field, considers, it is preferable that the weight average molecular weight of described polyethyl acrylate is 3000-5000 from cost and in the concrete mechanical strength prepared.
Simultaneously, glass screen cloth in the present invention can have multiple specific constructive form, the glass fibre constituting glass screen cloth can also be known in the field any, so that concrete has more excellent mechanical strength, preferably, the radial density of described glass screen cloth is 4-5 root/cm, and latitudinal density is 2-3 root/cm.It is highly preferred that the diameter that described glass fibre is is 1-5mm.
It addition, raw material sand required for the present invention can be medium sand, it is also possible to be fine sand, in order to improve concrete mechanical strength further, it is preferable that the particle diameter of described sand is 5-10mm.
In like manner, described cement can be the trade mark any cement more than 32.5, so that concrete has more excellent mechanical strength, it is preferable that described cement is No. 42.5 cement or No. 52.5 cement.
In addition, the proportioning of each raw material of concrete can also select in wide scope, but so that the concrete of preparation has the mechanical strength of excellence, preferably, relative to the cement of 100 weight portions, the consumption of described cement is weight portion, the consumption of described sand is 200-300 weight portion, the consumption of described flyash is 150-180 weight portion, and the consumption of described polyethyl acrylate is 20-30 weight portion, and the consumption of described water is 30-60 weight portion.
In the present invention, in the operation making concrete first product, the adjacent distance between two glass screen cloths can select in wide scope, it is preferable that the adjacent distance between two glass screen cloths is 10-15cm；
In the operation of prepared concrete slurry, the temperature and time of described mixing also can select in wide scope, it is preferable that the time of described mixing is 20-30min, temperature 15-30 DEG C of described mixing.
In the prepared concrete operation of polyethyl acrylate-glass fibre cement, the time of described heating and temperature also can select in wide scope, it is preferable that 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-glass fibre cement concrete, described polyethyl acrylate-glass fibre cement concrete is prepared from by above-mentioned method.
Hereinafter will be described the present invention by embodiment.In following example, tensile strength, bending strength and impact strength parameter are recorded by the YE-2000 hydraulic concrete pressure testing machine of gold Instrument Ltd. by Shanghai.
Glass fibre is the product of Tyke, Hangzhou steyr composite company limited, sand is the product of Jun Feng natural emery factory of Wenxi County, flyash is the Lingshou County product 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 company.
Embodiment 1
1) glass fibre that diameter is 3mm being laid into glass screen cloth, wherein the radial density of glass screen cloth is 4/cm, and latitudinal density is 2/cm；
2) by No. 42.5 cement 100kg, particle diameter to be the sand 250kg of 8mm, flyash 160, weight average molecular weight be 4000 polyethyl acrylate 25kg and aqueous phase mixing prepare concrete slurry；
3) concrete slurry is sprayed into mould on concrete, then lay glass fiber net cloth, then on glass screen cloth, spray sets concrete slurry and lays glass screen cloth above concrete slurry with this toward being copied into concrete first product, and the wherein adjacent distance between two glass screen cloths is 13cm；
4) at 90 DEG C, concrete first product is heated 2.5h with the prepared concrete operation of polyethyl acrylate-glass fibre cement.
This concrete incipient crack tensile strength is 5.1N/mm2, ultimate tensile strength is 9.0N/mm2, First Cracking strength is 7.9N/mm2, ultimate bending strength is 25N/mm2, impact strength is 30kJ/m2。
Embodiment 2
1) glass fibre that diameter is 1mm being laid into glass screen cloth, wherein the radial density of glass screen cloth is 4/cm, and latitudinal density is 2/cm；
2) by No. 42.5 cement 100kg, particle diameter to be the sand 200kg of 5mm, flyash 150, weight average molecular weight be 3000 polyethyl acrylate 20kg and aqueous phase mixing prepare concrete slurry；
3) concrete slurry is sprayed into mould on concrete, then lay glass fiber net cloth, then on glass screen cloth, spray sets concrete slurry and lays glass screen cloth above concrete slurry with this toward being copied into concrete first product, and the wherein adjacent distance between two glass screen cloths is 10cm；
4) at 80 DEG C, concrete first product is heated 2h with the prepared concrete operation of polyethyl acrylate-glass fibre cement.
This concrete incipient crack tensile strength is 5.0N/mm2, ultimate tensile strength is 8.8N/mm2, First Cracking strength is 7.8N/mm2, ultimate bending strength is 24.5N/mm2, impact strength is 29kJ/m2。
Embodiment 3
1) glass fibre that diameter is 5mm being laid into glass screen cloth, wherein the radial density of glass screen cloth is 5/cm, and latitudinal density is 3/cm；
2) by No. 42.5 cement 100kg, particle diameter to be the sand 300kg of 10mm, flyash 180, weight average molecular weight be 5000 polyethyl acrylate 30kg and aqueous phase mixing prepare concrete slurry；
3) concrete slurry is sprayed into mould on concrete, then lay glass fiber net cloth, then on glass screen cloth, spray sets concrete slurry and lays glass screen cloth above concrete slurry with this toward being copied into concrete first product, and the wherein adjacent distance between two glass screen cloths is 15cm；
4) at 100 DEG C, concrete first product is heated 3h with the prepared concrete operation of polyethyl acrylate-glass fibre cement.
This concrete incipient crack tensile strength is 5.2N/mm2, ultimate tensile strength is 8.9N/mm2, First Cracking strength is 7.8N/mm2, ultimate bending strength is 24N/mm2, impact strength is 28kJ/m2。
Embodiment 4
According to the method for embodiment 1 carry out prepare polyethyl acrylate-glass fibre cement concrete, institute the difference is that, the weight average molecular weight of described polyethyl acrylate is 2000.
This concrete incipient crack tensile strength is 4.2N/mm2, ultimate tensile strength is 7.5N/mm2, First Cracking strength is 7.0N/mm2, ultimate bending strength is 18N/mm2, impact strength is 18kJ/m2。
Embodiment 5
According to the method for embodiment 1 carry out prepare polyethyl acrylate-glass fibre cement concrete, institute the difference is that, the weight average molecular weight of described polyethyl acrylate is 8000.
This concrete incipient crack tensile strength is 4.0N/mm2, ultimate tensile strength is 7.7N/mm2, First Cracking strength is 7.3N/mm2, ultimate bending strength is 19N/mm2, impact strength is 20kJ/m2。
Embodiment 6
According to the method for embodiment 1 carry out prepare polyethyl acrylate-glass fibre cement concrete, institute the difference is that, the weight average molecular weight of described polyethyl acrylate is 8000.
This concrete incipient crack tensile strength is 4.0N/mm2, ultimate tensile strength is 7.7N/mm2, First Cracking strength is 7.3N/mm2, ultimate bending strength is 19N/mm2, impact strength is 20kJ/m2。
Embodiment 7
According to the method for embodiment 1 carry out prepare polyethyl acrylate-glass fibre cement concrete, institute the difference is that, described cement is No. 52.5 cement.
This concrete incipient crack tensile strength is 5.5N/mm2, ultimate tensile strength is 8.5N/mm2, First Cracking strength is 8.5N/mm2, ultimate bending strength is 26N/mm2, impact strength is 22kJ/m2。
Comparative example 1
According to the method for embodiment 1 carry out prepare polyethyl acrylate-glass fibre cement concrete, institute the difference is that, it does not have use polyethyl acrylate.
This concrete incipient crack tensile strength is 3.5N/mm2, ultimate tensile strength is 7.2N/mm2, First Cracking strength is 6.5N/mm2, ultimate bending strength is 14N/mm2, impact strength is 16kJ/m2。
Comparative example 2
According to the method for embodiment 1 carry out prepare polyethyl acrylate-glass fibre cement concrete, institute the difference is that, it does not have use glass fibre.
This concrete incipient crack tensile strength is 3.6N/mm2, ultimate tensile strength is 7.0N/mm2, First Cracking strength is 6.1N/mm2, ultimate bending strength is 13N/mm2, impact strength is 17kJ/m2。
Comparative example 3
Carrying out preparing polyethyl acrylate-glass fibre cement concrete according to the method for embodiment 1, institute is netted but in disorder be mixed in concrete slurry the difference is that, glass fibre does not lay into glass.
This concrete incipient crack tensile strength is 3.7N/mm2, ultimate tensile strength is 8.2N/mm2, First Cracking strength is 6.6N/mm2, ultimate bending strength is 15N/mm2, impact strength is 16kJ/m2。
Comparative example 4
According to the method for embodiment 1 carry out prepare polyethyl acrylate-glass fibre cement concrete, institute the difference is that, concrete first product does not heat but Directly Dried in Shadow.
This concrete incipient crack tensile strength is 3.4N/mm2, ultimate tensile strength is 8.0N/mm2, First Cracking strength is 6.8N/mm2, ultimate bending strength is 16N/mm2, impact strength is 17kJ/m2。
By above-described embodiment and comparative example it can be seen that polyethyl acrylate-glass fibre cement concrete prepared by the present invention has the tensile strength of excellence, bending strength and impact strength, thus meeting the needs of strong concrete.
The preferred embodiment of the present invention described in detail above; but, the present invention is not limited to the detail in above-mentioned embodiment, in the technology concept of the present invention; technical scheme can being carried out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode, in order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by the present invention separately.
Additionally, can also carry out combination in any between the various different embodiment of the present invention, as long as it is without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. the concrete preparation method of polyethyl acrylate-glass fibre cement, it is characterised in that described method includes:
1) glass fibre is laid into the operation of glass screen cloth；
2) cement, sand, flyash, polyethyl acrylate and aqueous phase are mixed the operation with prepared concrete slurry；
3) being sprayed into mould by concrete slurry and then lay glass fiber net cloth on concrete, then on glass screen cloth, spray sets concrete slurry and lays glass screen cloth above concrete slurry with this past operation being copied into concrete first product；
4) concrete first product is heated with the prepared concrete operation of polyethyl acrylate-glass fibre cement；
Wherein, the radial density of described glass screen cloth is 4-5 root/cm, and latitudinal density is 2-3 root/cm；The diameter of described glass fibre is 1-5mm；Relative to the cement of 100 weight portions, the consumption of described sand is 200-300 weight portion, and the consumption of described flyash is 150-180 weight portion, and the consumption of described polyethyl acrylate is 20-30 weight portion, and the consumption of described water is 30-60 weight portion；The adjacent distance between two glass screen cloths is 10-15cm.
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 2, wherein, the particle diameter of described sand is 5-10mm.
4. preparation method according to claim 2, wherein, described cement is No. 42.5 cement or No. 52.5 cement.
5. the preparation method according to any one in claim 1-4, wherein, in the operation of prepared concrete slurry, the time of described mixing is 20-30min, temperature 15-30 DEG C of described mixing.
6. the preparation method according to any one in claim 1-4, wherein, in the prepared concrete operation of polyethyl acrylate-glass fibre cement, the temperature of described heating is 80-100 DEG C, and the time of described heating is 2-3h.
7. polyethyl acrylate-glass fibre cement concrete, it is characterised in that described polyethyl acrylate-glass fibre cement concrete is prepared from by the method described in any one in claim 1-6.
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| CN201410504661.8A CN104310876B (en) | 2014-09-26 | 2014-09-26 | Polyethyl acrylate-glass fibre cement concrete and preparation method thereof |
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| CN104310876B true CN104310876B (en) | 2016-06-29 |
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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 |
-
2014
- 2014-09-26 CN CN201410504661.8A patent/CN104310876B/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 |
|---|
| 纤维网片复合方式对纤维增强水泥基材料性能的影响;孙伟等;《东南大学学报（自然科学版）》;20031130;第33卷(第6期);第1.3-1.4节、2.1-2.2节 * |
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