CN104446140A - Modified polyurethane concrete thin layer paving material - Google Patents
Modified polyurethane concrete thin layer paving material Download PDFInfo
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- CN104446140A CN104446140A CN201410690097.3A CN201410690097A CN104446140A CN 104446140 A CN104446140 A CN 104446140A CN 201410690097 A CN201410690097 A CN 201410690097A CN 104446140 A CN104446140 A CN 104446140A
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Abstract
The invention relates to a modified polyurethane concrete thin layer paving material which comprises modified polyurethane and gravel which are uniformly mixed at the normal temperature, wherein the mass ratio of modified polyurethane to the gravel is (20-30) to 100; modified polyurethane is a thermosetting polymer material and has the tensile strength of higher than 10 MPa, the 70-DEG C bonding pulling strength of higher than 3 MPa, the break elongation rate of 60-200%, the tensile elasticity modulus of 30-100 MPa and the viscosity of lower than 2,000 mPa.s. The modified polyurethane concrete thin layer paving material has basic performance of a general road bituminous mixture, the fatigue resistance is remarkably improved, the high-temperature stability of the paving material is improved, the interlayer adhesion is enhanced, and the overall stability of a paving structure is facilitated; the paving material is relatively good in flexibility, can better adapt to bending deformation of a bridge panel, can prevent or reduce cracks, is relatively good in watertightness, can prevent water damage, and is relatively simple in construction process and relatively short in curing cycle.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of bridge deck pavement material.
Background technology
Current domestic deck paving material therefor mostly is asphalt, and it has, and maintenance is convenient, plastic deformation is good, the series of advantages such as comfortable of driving a vehicle, and this facilitates applying of it and technical development greatly.But in asphalt use procedure, some deck paving early diseases can not get good solution all the time, especially for paving steel bridge deck, fatigue crack, hole groove, rut etc. are that paving steel bridge deck is difficult to solve " difficult and complicated cases " for a long time always.By to the bridge deck damage analysis of causes in recent years, think that Asphalt Mixtures Fatigue Properties deficiency is that deck paving produces one of major reason of early damage.Driving long term causes fatigue crack, if repair not in time, the often disease such as derivative loose, hole groove, these diseases all can cause the acceleration of rainwater to be infiltrated, and then cause decking and destroy, the decline of bridge structure overall performance, the lost of life.
For solving deck paving engineering early damage problem, domestic many colleges and universities and scientific research institution are all at the deck paving novel material actively seeking or develop more excellent performance.Such as, a kind of modified epoxy resin concrete material disclosed in Chinese invention patent application Publication Specification that publication number is CN101497510 is prepared and method.Compare with pitch, the resistance to elevated temperatures of epoxy resin, adhesive property and antiseptic property are all relatively good, for can effectively solve rut problem after deck paving, and can greatly reduce the generation of the diseases such as deck paving delamination, hole groove.However, epoxy resin concrete is as a kind of rigid material, and it is still limited that it follows deformability, inevitable for crack problem during deck paving.And urethane can address this problem, especially through epoxy and the modified urethane of poly-sulphur, better than the snappiness of epoxy resin, improve for antifatigue cracking performance during deck paving, in turn ensure that the excellent and stable of other performances simultaneously.Therefore, modified polyurethane concrete material can solve nearly all typical disease problem that deck paving runs into, and is the important directions of bridge deck pavement material future development.Namely modified polyurethane concrete membrane pavement material of the present invention is the particular embodiment of these new approaches.
Summary of the invention
For solving the early damage problems such as deck paving hole groove, rut, crack, the invention provides a kind of modified polyurethane concrete membrane pavement material, comparing with traditional asphalt compound, effectively can improve mechanical property and the high-temperature stability of bridge deck pavement material.
A kind of modified polyurethane concrete membrane pavement material is made up of uniform mixing under modified polyurethane and rubble normal temperature, and the mass ratio of modified polyurethane and rubble is 20 ~ 30:100; Described modified polyurethane is thermoset copolymer material, tensile strength > 10MPa, 70 DEG C of bonding pull strength > 3 MPa, elongation at break 60% ~ 200%, tensile modulus of elasticity 30 ~ 100 MPa, viscosity < 2000mPas.
Advantageous Effects of the present invention embodies in the following areas:
(1) compared with traditional asphalt compound, anti-fatigue performance of the present invention obviously improves, and fatigue lifetime can increase at least 80%, not only can extend deck paving work-ing life, can reduce maintenance cost simultaneously;
(2) compared with traditional asphalt compound, high temperature dynamic stability of the present invention improves about 80%, and low-temperature bending strain simultaneously increases about 60%.The deck paving that this material having high temperature and low temperature advantage concurrently changes all greatly for the temperature difference and amount of deflection is more outstanding;
(3) compared with epoxy resin concrete, snappiness of the present invention is better, more can adapt to the flexural deformation of decking, can prevent or slow down the appearance in crack, and construction technology is simpler, and the health cycle is shorter.
There is a great difference on environment residing for bridge deck pavement material and road surface, stand more complicated mechanical deformation, and climatope is also more severe simultaneously, and fatigue cracking, the hole disease such as groove, rut often appear in traditional asphalt compound pavement material.Modified polyurethane concrete membrane pavement material of the present invention can overcome the above problems, thus improves driving condition, increases the service life.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
embodiment 1
In the modified polyurethane concrete membrane pavement material of every cubic metre of the present embodiment, the mass ratio of modified polyurethane and rubble is 20:100.
embodiment 2
In the modified polyurethane concrete membrane pavement material of every cubic metre of the present embodiment, the mass ratio of modified polyurethane and rubble is 25:100.
embodiment 3
In the modified polyurethane concrete membrane pavement material of every cubic metre of the present embodiment, the mass ratio of modified polyurethane and rubble is 30:100.
comparative examples
The present embodiment is traditional deck paving bituminous concrete, and the mass ratio of every cubic meter of concrete medium pitch and building stones is 6.2:100.
To above four embodiments, respectively according to split test in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011), bend test method shaping test piece.After test piece maintenance 21d, test cleavage strength and the flexural strain of test specimen respectively, obtain following testing data:
As can be seen from above-mentioned test-results: compare with bituminous concrete, the concrete cleavage strength of modified polyurethane and flexural strain are all improved significantly.The cleavage strength of above-mentioned three embodiments respectively comparatively bituminous concrete improve 294%, 322%, 356%, flexural strain respectively comparatively bituminous concrete improve 110%, 130%, 173%.
Claims (3)
1. a modified polyurethane concrete membrane pavement material, is characterized in that: be made up of uniform mixing under modified polyurethane and rubble normal temperature, and the mass ratio of modified polyurethane and rubble is 20 ~ 30:100; Described modified polyurethane is thermoset copolymer material, tensile strength > 10MPa, 70 DEG C of bonding pull strength > 3 MPa, elongation at break 60% ~ 200%, tensile modulus of elasticity 30 ~ 100 MPa, viscosity < 2000mPas.
2. a kind of modified polyurethane concrete membrane pavement material according to claim 1, is characterized in that: described the maximum particle of crushed stone is not more than 10mm.
3. a kind of modified polyurethane concrete membrane pavement material according to claim 1, is characterized in that: after described modified polyurethane and rubble uniform mixing, should pave in time, should more than 45min from mixing and stirring to the required time that paved; Construction environment temperature is not less than 10 DEG C, forbids in overcast and rainy and strong wind sky construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690097.3A CN104446140A (en) | 2014-11-26 | 2014-11-26 | Modified polyurethane concrete thin layer paving material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690097.3A CN104446140A (en) | 2014-11-26 | 2014-11-26 | Modified polyurethane concrete thin layer paving material |
Publications (1)
| Publication Number | Publication Date |
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| CN104446140A true CN104446140A (en) | 2015-03-25 |
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| CN201410690097.3A Pending CN104446140A (en) | 2014-11-26 | 2014-11-26 | Modified polyurethane concrete thin layer paving material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105801002A (en) * | 2016-03-31 | 2016-07-27 | 北京大陆益通环保科技有限公司 | Polyurethane rubber concrete material and processing method thereof |
| CN109056525A (en) * | 2018-09-06 | 2018-12-21 | 宁波路宝科技实业集团有限公司 | A kind of Steel Bridge Deck composite pavement structure and method for paving |
| CN110372295A (en) * | 2019-07-12 | 2019-10-25 | 同济大学 | High-intensity and high-tenacity light polyurethane rubber bridge deck pavement material and its preparation |
| CN111138116A (en) * | 2020-01-09 | 2020-05-12 | 北京建筑大学 | Polyether polyurethane concrete paving material and preparation method thereof |
| CN112726321A (en) * | 2020-12-30 | 2021-04-30 | 山东省交通规划设计院有限公司 | Full-thickness ultrathin long-life pavement structure and construction method thereof |
| CN113880497A (en) * | 2021-10-14 | 2022-01-04 | 勤山(上海)机场场道工程技术有限公司 | Polyurethane cementing material for airport pavement and polyurethane concrete for repairing airport pavement |
| CN116577160A (en) * | 2023-02-20 | 2023-08-11 | 山东省交通科学研究院 | Indoor forming method of single-component polyurethane mixture |
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| JP2004060384A (en) * | 2002-07-31 | 2004-02-26 | Koichiro Kimura | Paving method |
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| DE102010031311A1 (en) * | 2009-07-16 | 2011-01-20 | Basf Se | Method for the production of cover layer or supporting layer for roads, paths and other traffic areas, comprises producing a mixture containing mineral materials, and a polymer reaction mixture and/or if necessary further additives |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105801002A (en) * | 2016-03-31 | 2016-07-27 | 北京大陆益通环保科技有限公司 | Polyurethane rubber concrete material and processing method thereof |
| WO2017165989A1 (en) * | 2016-03-31 | 2017-10-05 | 北京大陆益通环保科技有限公司 | Polyurethane rubber concrete material and processing method therefor |
| CN109056525A (en) * | 2018-09-06 | 2018-12-21 | 宁波路宝科技实业集团有限公司 | A kind of Steel Bridge Deck composite pavement structure and method for paving |
| CN110372295A (en) * | 2019-07-12 | 2019-10-25 | 同济大学 | High-intensity and high-tenacity light polyurethane rubber bridge deck pavement material and its preparation |
| CN111138116A (en) * | 2020-01-09 | 2020-05-12 | 北京建筑大学 | Polyether polyurethane concrete paving material and preparation method thereof |
| CN112726321A (en) * | 2020-12-30 | 2021-04-30 | 山东省交通规划设计院有限公司 | Full-thickness ultrathin long-life pavement structure and construction method thereof |
| CN113880497A (en) * | 2021-10-14 | 2022-01-04 | 勤山(上海)机场场道工程技术有限公司 | Polyurethane cementing material for airport pavement and polyurethane concrete for repairing airport pavement |
| CN116577160A (en) * | 2023-02-20 | 2023-08-11 | 山东省交通科学研究院 | Indoor forming method of single-component polyurethane mixture |
| CN116577160B (en) * | 2023-02-20 | 2024-03-19 | 山东省交通科学研究院 | Indoor forming method of single-component polyurethane mixture |
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Application publication date: 20150325 |
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