CN102976663A - Polymer modified polyethylene terephthalate (PET) concrete and preparation method thereof - Google Patents
Polymer modified polyethylene terephthalate (PET) concrete and preparation method thereof Download PDFInfo
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- CN102976663A CN102976663A CN2012104996351A CN201210499635A CN102976663A CN 102976663 A CN102976663 A CN 102976663A CN 2012104996351 A CN2012104996351 A CN 2012104996351A CN 201210499635 A CN201210499635 A CN 201210499635A CN 102976663 A CN102976663 A CN 102976663A
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Abstract
The invention discloses polymer modified polyethylene terephthalate (PET) concrete. The polymer modified PET concrete comprises a binding agent, an aggregate and an admixture in a weight ratio of the binding agent and the admixture to the aggregate of 1:(1 to 3), wherein the binding agent is PET, the admixture is fly ash, and the weight ratio of the PET to the fly ash is equal to 1:(0.5-4); and the aggregate comprises stone and sand, and the sand accounts for 20 to 100 percent of the aggregate in percentage by weight. The invention also discloses a preparation method of the concrete. The concrete can be prepared from waste PET plastic bottles, so that the environmental pollution is reduced. The PET concrete has high compression strength, flexural strength and early strength, and is suitable for various concrete structures with early strength, high shock strength and high flexural strength.
Description
Technical field
The present invention relates to a kind of concrete structure material technology, especially a kind of polymer modification PET concrete and preparation method thereof.
Background technology
At present, the abbreviation of the English Polyethylene terephthalate of PET(is called for short PET or PETP.The Chinese meaning is: poly terephthalic acid class plastics mainly comprise polyethylene terephthalate PET and polybutylene terephthalate PBT.Polyethylene terephthalate is commonly called as again polyester resin, is commonly called as polyester resin) be normally used for producing the current consumption series products such as plastic beverage bottle, food pack.The PET plastic beverage bottle has the advantage that quality gently, is easily produced and is convenient to store, and has replaced transportation and storage that glass beverage bottle is used for soda pop.Had research report to show in 2007: the annual PET weight of drink bottle that consumes in the whole world is approximately 10,000,000 tons, and annual rate of increase is about 15%(ECO PET, 2007), by the end of at present, annual about about 20,000,000 tons of PET raw materials that consume.But then, the PET quantity of recycling is but very limited.Generally, people make it become waste PET using the PET beverage bottle it arbitrarily can be abandoned later, and this brings a very large problem is that we have to build more facility and remove to deposit and process waste PET.For thermoplastic material, regeneration is a kind of very feasible waste treatment method.Novel material is produced in the waste PET reclaiming of classifying, will effectively reduce the quantity of waste PET, and the waste or used plastics quantity that annual exponentially doubly increases has also promoted people and explored new way to the plastic prod recycling.Recycling PET material has been made major contribution to the development of plastics industry.There is report to claim that PET is a class the abundantest in the urban solid garbage, because the PET material can't be biodegradable, so the quality that waste PET is processed has great effect to ecotope.When the recycling waste PET is infeasible, burn PET and become topmost treatment process as energy derive, the atmospheric pollution that trash burning brings and acid rain are huge challenges to human survival, and green peace organization actively is devoted to address this problem always.Minimizing and the recycling of refuse have promoted expanding economy, and a large amount of waste and old starting material reclaim and are used for other aspects, have reduced waste and have saved resource.PET is applied to concrete provides a brand-new road for process in plastics, can also reduce simultaneously because gather the environmental disruption problem that mineral raw material (such as cement baking etc.) brings.
In concrete structure, for example roadupkeep, the concrete road surface is because the road surface local damage can appear in the factor affecting such as load, environment, design, construction.If these local diseases among a small circle can not get repairing effectively and timely, will cause damaged scope further to enlarge, disease is further aggravated, and finally causes even more serious destruction.When repairing, the gain in strength speed of material is restricting the time of open to traffic.Early strong, durable fast repairing material can shorten the road closed time, greatly reduces the impact on traffic.The concrete of early strength, resistance to impact shock and High anti bending strength is applied to have good social effect and economic implications in the various concrete structures.
The people such as University of Oklahoma's Thessaloniki (Niji Khoury) mention PET and soil or sand heating and melting under 275 ℃ condition at " recycled plastic bottle Application and preparation is in the synthetic soil research of Geological Engineering " (" Soil Fused with Recycled Plastic Bottles for Various Geo-Engineering Application "), form the plasticine material of homogeneous, the PET consumption that adopts is PET: sand=1:1.Utilizing hot melt PET to prepare aspect the concrete, the people such as Thessaloniki do not conduct a research, also the PET concrete that relates to for various concrete structures useless.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of polymer modification PET concrete and preparation method thereof is provided, this concrete utilizes the PET preparation, have higher ultimate compression strength, folding strength and early strength, be applicable to various morning of strong, high impact-resistant and the concrete structure of high breaking strength.
For achieving the above object, the present invention adopts following technical proposals:
A kind of polymer modification PET concrete comprises binding agent, gathers materials and additive, by weight, and binding agent+additive: gather materials=1:1 ~ 3; Described binding agent is PET, adopts the waste plastic bottle or the new production PET material that reclaim, and additive is flyash, by weight, PET: flyash=1:0.5 ~ 4, gathering materials is building stones and sand, weight percent sand accounts for 20% ~ 100% by gathering materials.
The particle diameter of described building stones is less than or equal to 31.5mm.
The concrete preparation method of a kind of polymer modification PET, step is as follows:
1) prepares by weight PET, flyash and gather materials;
2) with flyash and PET mix and blend 2min ~ 5min;
3) then add the continuation of gathering materials and stir 3min ~ 5min;
4) at 270～290 ℃ of heating 2h～3h, making compound become flow state can use, and again stirs 1min during use.
As binding agent, used sand and rubble gather materials as concrete PET used in the present invention in concrete, and flyash plays the effect that part substitutes PET and increases concrete workability as additive.By the consumption of optimizing PET and the grating of gathering materials, effectively raise the concrete ultimate compression strength of PET, folding strength and early strength, and with this PET concrete be applied to various morning strong, high impact-resistant and the concrete structure of high breaking strength in.
The present invention according to the aforementioned techniques alternatives formulation three kinds of PET concrete.
The first is for using PET as binding agent, and the basalt of maximum particle diameter 13.2mm and sand are as gathering materials, and additive is flyash, and according to PET: flyash=1:1, mix is made the first PET concrete;
The second is for using PET as binding agent, and the limestone of maximum particle diameter 9.5mm and sand are as coarse aggregate, and additive is flyash, and according to PET: flyash=1:0.5, mix is made the second PET concrete;
The third is for using PET as binding agent, and the limestone of maximum particle diameter 9.5mm and sand are as coarse aggregate, and additive is flyash, and according to PET: flyash=1:1, mix is made the third PET concrete.
Show by test, at PET+ flyash: gather materials=condition of 1:3 under, the concrete ultimate compression strength of the first PET is 34.04MPa, folding strength is 12.23MPa, wherein folding strength is higher than superfine road surface and requires 2 times; The concrete ultimate compression strength of the second PET is 27.8MPa, and folding strength is 9.56MPa, and wherein folding strength is higher than 1.59 times that superfine road surface requires; The concrete ultimate compression strength of the third PET is 36MPa, and folding strength is 9.09MPa, and wherein folding strength is higher than 1.5 times of express highway pavement requirement.
The invention has the beneficial effects as follows:
1. propose a kind of novel method of recycling waste PET, can effectively reduce waste PET to the destruction of ecotope.
2.PET the concrete raw materials easily obtains and price is low, manufacturing process is simple.
3. through the PET concrete mix of design, because it can reach intensity about 3 hours, can effectively be used for the various concrete structures such as highway, bridge, building.
4.PET concrete has preferably fracture resistance, can be used to require early strong, High anti bending strength and concrete structure excellent in cushion effect.
Description of drawings
Fig. 1 is PET concrete anti-compression test specimen picture;
Fig. 2 is PET agent on crack resistance of concrete folding test specimen picture;
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Embodiment:
Material prescription
Used PET is waste plastic bottle, before the use, removes label and bottle cap, obtains comparatively pure PET material, bottle is cut into little PET fragment after, use after using clear water suitably to clean also oven dry.
Used coarse aggregate is that maximum particle diameter is that limestone or the maximum particle diameter of 9.5mm is the 13.2mm basaltic broken stone, and rear use is also dried in the rubble washing.
Used fine aggregate is common river sand, the medium sand of maximum particle diameter 4.75mm.
Used additive is flyash.
Used grading limit of gathering materials is strangled grating design according to richness, according to maximum particle diameter 13.2mm and maximum particle diameter 9.5mm gradation design, sees for details shown in table 1 table 2 respectively.
The grading limit requirement of table 1 maximum particle diameter 13.2mm
The grading limit requirement of table 2 maximum particle diameter 9.5mm
During every 100g gathered materials, the used quality of gathering materials of each particle diameter saw Table shown in 3 tables 4.
Each particle diameter used quality of gathering materials during table 3 maximum particle diameter 13.2mm
Each particle diameter used quality of gathering materials during table 4 maximum particle diameter 9.5mm
Take PET as benchmark, the consumption of flyash is: PET: flyash=1:0.5～4(mass ratio)
Take PET and mixture of fly ash as benchmark, the consumption that gathers materials is: PET+ flyash: gather materials=1:1 ~ the 3(mass ratio)
2. preparation method
Use PET and coarse aggregate to make PET concrete 1 as the basalt of maximum particle diameter 13.2mm, its preparation technology is: the consumption that gathers materials by each particle diameter of table 3 defined carries out weighing, the Determination of quantity of PET is PET: flyash=1:1, PET+ flyash: gather materials=1:3.With flyash and PET mix and blend 2min, then adding gathers materials continues to stir 3min, and at 270～290 ℃ of heating 2h～3h, making compound become flow state can use, and again stirs 1min during use.
Use the limestone of PET and coarse aggregate maximum particle diameter 9.5mm to make PET concrete 2, its preparation technology is: the consumption that gathers materials by each particle diameter of table 4 defined carries out weighing, the Determination of quantity of PET is PET: flyash=1:0.5, PET+ flyash: gather materials=1:3.With flyash and PET mix and blend 5min, then adding gathers materials continues to stir 5min, and at 270～290 ℃ of heating 2h～3h, making compound become flow state can use, and again stirs 2min during use.
Use the PET concrete 3 of the limestone making of PET and coarse aggregate maximum particle diameter 9.5mm, its preparation technology is: the consumption that gathers materials by each particle diameter of table 4 defined carries out weighing, the Determination of quantity of PET is PET: flyash=1:1, PET+ flyash: gather materials=1:3.With flyash and PET mix and blend 3min, then adding gathers materials continues to stir 4min, and at 270～290 ℃ of about 2h～3h of heating, making compound become flow state can use, and again stirs 1.5min during use.
According to different-grain diameter and the PET of gathering materials: the flyash ratio, made the PET concrete of 4 kinds of proportionings.PET concrete setting and to reach the final strength time be 3h has very strong epistasis morning.
PET concrete 1 adopts the basalt of coarse aggregate maximum particle diameter 13.2mm, PET: flyash=1:1, and PET+ flyash: gather materials=1:3, the essential property of PET concrete 1 sees Table 5
The essential property of table 5PET concrete 1
| Character | Unit | Numerical value |
| Bulk density | kg/m 3 | 2000 |
| Water-intake rate | % | <1% |
| Ultimate compression strength | MPa | 34.04 |
| Folding strength | MPa | 12.23 |
As can be seen from Table 5, the water-intake rate of PET concrete 1 is lower, and anti-permeability performance is better, and ultimate compression strength satisfies the road surface requirement, and folding strength satisfies 2 times that superfine road surface requires simultaneously.
PET concrete 2 adopts the limestone of coarse aggregate maximum particle diameter 9.5mm, PET: flyash=1:0.5, and PET+ flyash: gather materials=1:3, the essential property of PET concrete 2 sees Table 6
The essential property of table 6 PET concrete 2
| Character | Unit | Numerical value |
| Bulk density | kg/m 3 | 1900 |
| Water-intake rate | % | <1% |
| Ultimate compression strength | MPa | 27.80 |
| Folding strength | MPa | 9.56 |
As can be seen from Table 6, the ultimate compression strength of PET concrete 2 satisfies the road surface requirement, and folding strength satisfies 1.59 times that superfine road surface requires simultaneously.
PET concrete 3 adopts the limestone of coarse aggregate maximum particle diameter 9.5mm, PET: flyash=1:1, and PET+ flyash: gather materials=1:3, the essential property of PET concrete 3 sees Table 7
The essential property of table 7PET concrete 3
| Character | Unit | Numerical value |
| Bulk density | kg/m 3 | 1950 |
| Water-intake rate | % | <1% |
| Ultimate compression strength | MPa | 36.00 |
| Folding strength | MPa | 9.09 |
As can be seen from Table 7, the ultimate compression strength of PET concrete 3 satisfies the road surface requirement, and is the highest in 3 kinds of proportionings, and folding strength satisfies 1.5 times that superfine road surface requires simultaneously.
PET concrete performance from table 5 table 6 table 7, ultimate compression strength can guarantee that at 25MPa ~ 36MPa folding strength is about 9MPa ~ 12MPa simultaneously, has preferably resistance to compression and folding strength, goes for various concrete structures.Observe PET concrete sample (Fig. 1, Fig. 2), find that the PET concrete surface is smooth smooth, do not have the crack.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (6)
1. a polymer modification PET concrete is characterized in that, comprise binding agent, gather materials and additive, by weight, binding agent+additive: gather materials=1:1 ~ 3.
2. polymer modification PET concrete as claimed in claim 1 is characterized in that, described binding agent is PET, adopts the waste plastic bottle or the new production PET material that reclaim.
3. polymer modification PET concrete as claimed in claim 2 is characterized in that, described additive is flyash, by weight, and PET: flyash=1:0.5 ~ 4,
4. polymer modification PET concrete as claimed in claim 1 is characterized in that, described gathering materials is building stones and sand, and weight percent sand accounts for 35%～100% by gathering materials.
5. polymer modification PET concrete as claimed in claim 4 is characterized in that, the particle diameter of described building stones is less than or equal to 31.5mm.
6. concrete preparation method of polymer modification PET described in claim 1, its step is as follows:
1) prepares by weight PET, flyash and gather materials;
2) with flyash and PET mix and blend 2min ~ 5min;
3) then add the continuation of gathering materials and stir 3min ~ 5min;
4) at 270～290 ℃ of heating 2h～3h, making compound become flow state can use, and again stirs 1min ~ 2min during use.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104996351A CN102976663A (en) | 2012-11-29 | 2012-11-29 | Polymer modified polyethylene terephthalate (PET) concrete and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8921463B1 (en) | 2014-05-16 | 2014-12-30 | King Saud University | Synthetic aggregate for use in concrete |
| CN108383424A (en) * | 2018-03-27 | 2018-08-10 | 山东省交通规划设计院 | A kind of PET based polyalcohols concrete and technique for anchorage bridge telescopic device |
| CN109061116A (en) * | 2018-06-04 | 2018-12-21 | 浙江科技学院 | It is a kind of to simulate the material for newly mixing lightweight concrete property |
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| US20030041782A1 (en) * | 2001-04-27 | 2003-03-06 | Robert Malloy | Fly ash/mixed plastic aggregate and products made therefrom |
| CN1527804A (en) * | 2001-05-08 | 2004-09-08 | ���ʿ����о�����˾ | Compositions comprising solid particles and binder |
| KR20040097609A (en) * | 2003-05-12 | 2004-11-18 | 조병완 | Performanced-improving method of PET recycling polymer concrete to apply highly efficient nano particles |
| CN101376577A (en) * | 2007-08-30 | 2009-03-04 | 北京曲全环保科技有限公司 | Plastic and solid waste combined building material and production method thereof |
| CN102311244A (en) * | 2011-06-27 | 2012-01-11 | 葛智 | Method for recycling PET (polyethylene terephthalate) plastics, early-strength plastic mortar and method for preparing mortar |
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2012
- 2012-11-29 CN CN2012104996351A patent/CN102976663A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030041782A1 (en) * | 2001-04-27 | 2003-03-06 | Robert Malloy | Fly ash/mixed plastic aggregate and products made therefrom |
| CN1527804A (en) * | 2001-05-08 | 2004-09-08 | ���ʿ����о�����˾ | Compositions comprising solid particles and binder |
| KR20040097609A (en) * | 2003-05-12 | 2004-11-18 | 조병완 | Performanced-improving method of PET recycling polymer concrete to apply highly efficient nano particles |
| CN101376577A (en) * | 2007-08-30 | 2009-03-04 | 北京曲全环保科技有限公司 | Plastic and solid waste combined building material and production method thereof |
| CN102311244A (en) * | 2011-06-27 | 2012-01-11 | 葛智 | Method for recycling PET (polyethylene terephthalate) plastics, early-strength plastic mortar and method for preparing mortar |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8921463B1 (en) | 2014-05-16 | 2014-12-30 | King Saud University | Synthetic aggregate for use in concrete |
| CN108383424A (en) * | 2018-03-27 | 2018-08-10 | 山东省交通规划设计院 | A kind of PET based polyalcohols concrete and technique for anchorage bridge telescopic device |
| CN108383424B (en) * | 2018-03-27 | 2021-02-02 | 山东省交通规划设计院有限公司 | Construction process for constructing PET (polyethylene terephthalate) -based polymer concrete |
| CN109061116A (en) * | 2018-06-04 | 2018-12-21 | 浙江科技学院 | It is a kind of to simulate the material for newly mixing lightweight concrete property |
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Application publication date: 20130320 |