改性沥青SMA路面现场热再生工艺研究
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摘要
改革开放以来,我国公路建设事业得到了迅速发展,但随着我国公路建设事业高速发展,路面养护方面的问题也逐渐显现出来。早期修建的沥青混凝土路面经过多年的使用,其面层变薄并且老化,出现诸如网裂、沉陷、车辙、拥包等病害并逐步扩展,严重影响行车安全。
温拌—再生技术具有经济效率高、环境污染小、节能减排效果显著等特点。为了满足国家加强节能减排和推动循环经济发展的要求,需要大力发展路面温拌—再生技术。目前国内外对于温拌—再生技术的研究还很少,尤其是对于改性沥青SMA路面的温拌—再生技术的研究更是空白。
本文以某高速公路辽阳段K44+600-K46+750右幅第三车道现场热再生项目为依托,对改性沥青SMA路面的温拌—再生技术进行研究。首先,对某高速公路目前的道路状况进行了观测,找到其最大的病害所在,并提出了处理办法。其次,分析了SBS改性沥青的老化机理和再生剂的再生机理；试验确定了温拌—再生改性沥青SMA混合料的最佳拌合温度；通过旧路面材料与四种再生改性沥青SMA混合料的路用性能指标、疲劳性能指标的对比研究提出了在改性沥青SMA混合料再生过程中添加温拌剂DAT和新纤维的必要性。最后,在保证现场热再生施工效率的情况下,提出了温拌剂、新纤维的添加工艺和现场热再生施工的技术控制要点。
Since reform and opening, highway construction business in China have developed rapidly, but with the rapid development of highway construction business in China, the problems of pavement maintenance had emerged gradually at the same time. After so many years'usage, the asphalt mixture pavement surface course during early age had thinned out and aged. The pavement had appeared many diseases, such as net-shaped cracks, settlement, rutting, folding and so on. With these diseases extending gradually, the security of driving has been seriously influenced.
The technology of warm mix-recycled asphalt mixture has many characteristics, which are higher economic efficiency, smaller environmental pollution, more remarkable of energy conservation and emission reduction effect, etc. In order to meet the state strategic requirements of strengthening energy conservation and emission reduction and promoting circulation economy development, our country need to rapidly develop warm mix-recycled asphalt mixture technology. Nowadays there is a little research on warm mix-recycled asphalt mixture technology, especially on warm mix-recycled modified asphalt SMA mixture technology, which is blank.
This study is based on the hot in-place recycling project of the third lane right roadway on Liaoyang section of a highway, from K44+600to K46+750. In this project, we study on the warm mix-recycled modified asphalt SMA mixture technology. First of all, we have observed the current using status of the highway. Then we have found the most seriously disease of the highway and brought forward the disposal way. In the second place, we have analyzed the aging mechanism and regeneration mechanism of SBS modified asphalt; we have determined the best temperature of warm mix-recycled modified asphalt SMA mixture through the test; we have proposed the necessity of adding DAT and new fiber on the regenerative process of warm mix-recycled modified asphalt SMA mixture, which is based on the comparison result of pavement performance indexes and fatigue property indexes. In the last place, we have proposed adding process of DAT and new fiber. We also have proposed the technology controlling points of hot recycling construction, both of which are under the situation of ensuring construction efficiency.
温拌—再生技术具有经济效率高、环境污染小、节能减排效果显著等特点。为了满足国家加强节能减排和推动循环经济发展的要求,需要大力发展路面温拌—再生技术。目前国内外对于温拌—再生技术的研究还很少,尤其是对于改性沥青SMA路面的温拌—再生技术的研究更是空白。
本文以某高速公路辽阳段K44+600-K46+750右幅第三车道现场热再生项目为依托,对改性沥青SMA路面的温拌—再生技术进行研究。首先,对某高速公路目前的道路状况进行了观测,找到其最大的病害所在,并提出了处理办法。其次,分析了SBS改性沥青的老化机理和再生剂的再生机理；试验确定了温拌—再生改性沥青SMA混合料的最佳拌合温度；通过旧路面材料与四种再生改性沥青SMA混合料的路用性能指标、疲劳性能指标的对比研究提出了在改性沥青SMA混合料再生过程中添加温拌剂DAT和新纤维的必要性。最后,在保证现场热再生施工效率的情况下,提出了温拌剂、新纤维的添加工艺和现场热再生施工的技术控制要点。
Since reform and opening, highway construction business in China have developed rapidly, but with the rapid development of highway construction business in China, the problems of pavement maintenance had emerged gradually at the same time. After so many years'usage, the asphalt mixture pavement surface course during early age had thinned out and aged. The pavement had appeared many diseases, such as net-shaped cracks, settlement, rutting, folding and so on. With these diseases extending gradually, the security of driving has been seriously influenced.
The technology of warm mix-recycled asphalt mixture has many characteristics, which are higher economic efficiency, smaller environmental pollution, more remarkable of energy conservation and emission reduction effect, etc. In order to meet the state strategic requirements of strengthening energy conservation and emission reduction and promoting circulation economy development, our country need to rapidly develop warm mix-recycled asphalt mixture technology. Nowadays there is a little research on warm mix-recycled asphalt mixture technology, especially on warm mix-recycled modified asphalt SMA mixture technology, which is blank.
This study is based on the hot in-place recycling project of the third lane right roadway on Liaoyang section of a highway, from K44+600to K46+750. In this project, we study on the warm mix-recycled modified asphalt SMA mixture technology. First of all, we have observed the current using status of the highway. Then we have found the most seriously disease of the highway and brought forward the disposal way. In the second place, we have analyzed the aging mechanism and regeneration mechanism of SBS modified asphalt; we have determined the best temperature of warm mix-recycled modified asphalt SMA mixture through the test; we have proposed the necessity of adding DAT and new fiber on the regenerative process of warm mix-recycled modified asphalt SMA mixture, which is based on the comparison result of pavement performance indexes and fatigue property indexes. In the last place, we have proposed adding process of DAT and new fiber. We also have proposed the technology controlling points of hot recycling construction, both of which are under the situation of ensuring construction efficiency.
引文
[1]马月明.广巴公路沿线路面面层材料适用性研究[D].西安：长安大学,2008.
[2]赵慧敏.热再生沥青的路用性能评价[D].大连：大连理工大学,2008.
[3]张昌波.沥青混凝土厂拌热再生技术研究[D].西安：长安大学,2006.
[4]任拴哲.沥青路面厂拌热再生及其设备关键技术研究[D].西安：长安大学,2008.
[5]Button, J W, Estakhri C K, Little D N. Overiew of hot in-palce recycling of bituminous pavement [J]. Transportation Research Board,1999(32):178-185.
[6]Tom Kazmierowski, Pamela Marks, Stephen Lee. Ten years performance review of in-situ hot mix recycling in Ontario [J]. Transportation Research Board,1999(14):126-139.
[7]雒泽华.沥青路面再生技术在我国的发展应用[J].建筑机械技术与管理,2007(7).
[8]潘万宝.沥青路面热再生在道路改建工程中试验应用[J].安徽建筑,2005(5)：123-124.
[9]屈朝彬,从保华,等.旧同沥青路面现场热再生技术在石安高速公路上的应用[J].公路交通科技,2006(11)：28-30.
[10]赵利明.SBS改性沥青路面现场热再生试验研究[D].大连：大连理工大学,2006.
[11]张园.Evotherm温拌沥青混合料节能减排效果评价[J].黑龙江交通科技,2010(5)：61-63.
[12]徐世国,张萍,何唯平.雏议道路沥青再生方法的选择与工程评价[C].第四届中国国际沥青大会,2006.
[13]杨军.聚合物改性沥青[M].北京：化学工业出版社,2007.
[14]沈金安.改性沥青与SMA路面[M].北京：人民交通出版社,1999.
[15]杨哲,程国香.聚合物改性沥青生产现状与发展趋势[J].石油沥青,2001(4)：1-6.
[16]耿久光.沥青老化机理及再生技术研究[D].西安：长安大学,2009.
[17]恽魁宏.有机化学[M].北京：高等教育出版社,1982.
[18]赵志军,陈明宁,等.沥青的老化机理与性能研究[J].建材世界,2009(2)：159-162.
[19]黄晓明,吴少鹏,赵永利.沥青与沥青混合料[M].南京：东南大学出版社,2002.
[20]N. A. Glotova, V. S.Gorshkov, B. I. Kats. Changes in rheological properties and chemical composition of asphalts upon aging [J]. Chemistry and Technology of Fuels and Oils,2001(8):278-280.
[21]庞凌.沥青紫外光老化特性研究[D].武汉：武汉理工大学,2008.
[22]M. S. Cortizo, D.O,Larsen, H. Bianchetto, etal. Effect of the thermal degradation of SBS copolymers during the ageing of modified asphalt [J]. Polymer Degradation and Stability,2004(86):275-282.
[23]王忠涛,朱国军,肖敏,等.基于红外光谱法的SBS沥青光氧老化机理[J].国外建材科技,2008(6)：86-90.
[24]Codrin Daranga. Characterization of aged polymer modified asphalt cements for recycling puroses [D]. Louisiana State University,2005.
[25]Xiaohu Lu, Ulf Isacsson. Chemical and rheological evaluation of ageing of SBS polymer modified bitumen [J], Fuel,1998(7)961-972.
[26]徐静,洪锦祥,等.有关SBS改性沥青老化研究的文献综述[J].石油沥青,2009(6)：41-46.
[27]徐静,洪锦祥,等.改性沥青老化机理及再生剂的研究[J].石油沥青,2011(3)：19-23.
[28]吕伟民.沥青混合料设计原理与方法[M].上海：同济大学出版社,2001.
[29]王鹏,黄卫尔.采东DAT添加剂的温拌沥青拌合温度[J].长沙理工大学学报(自然科学版),2010(2)：12-18.
[30]杨航.掺温拌剂的沥青及其混合料性能研究[D].长沙：长沙理工大学,2010.
[31]倪良松,陈华鑫,等.纤维沥青混合料增强作用机理分析[J].合肥工业大学学报(自然科学版),2003(5)：1033-1037.
[32]刘立新.沥青混合料粘弹性力学及材料学原理[M].北京：人民交通出版社,2006.
[33]郭博.基于材料组成的双掺外加剂沥青混合料路用性能研究[D].西安：长安大学,2011.
[34]窦刚玉.SBS改性沥青路面现场热再生技术研究[D].大连：大连理工大学,2011.
[35]Mohammad L N, Negulescu II, Wu Z, et al. Investigation of the Use of Recycled Polymer Modified Asphalt Binder and Mixtures [J]. Asphalt Paving Technology, 2003,72:551-594.
[36]Rajib Basu Mallick, Julie E Bradley, Richard L Bradbury. Evaluation of heated reclaimed asphalt pavement material and wax-modified asphalt for use in recycled hot-mix asphalt [J]. Transportation Research Record,2007,1998:112-122.
[37]Strategic Highway Research Program. Summary Report on low Temperature and Thermal Fatifue Cracking. SHRP-A/2R-90-011[R]. USA:Strategic Highway Research Program, 1990.
[38]葛折圣,黄晓明,许国光.用弯曲应变能方法评价沥青混合料的低温抗裂性能[I].东南大学学报(自然科学版).2002,32(4)：1-3.
[39]Lee S J, Rust J P, Hamoud H, et al. Fatigue cracking resistance of f iber-reinforced asphalt concrete[J]. Textile Research Journal,2005,75:123-128.
[40]Mohammad L N, Wu Z, Aglan M A. Characterization of fracture and fatigue resistance on recycled polymer-modified asphalt pavement[C].5th international rilem conference, France, May 5-7,2004. Limoges:RILHM,375-381.
[41]江燕青.沥青路面就地热再生技术的研究[D].西安：长安大学,2006.
[42]张竹平.沥青混凝土路面就地热再生艺及设备[J].筑路机械与施工机械化,2003(4)：20-22.
[43]刘金玲.沥青及沥青混合料就地热再生工艺研究[D].大连：大连理工大学,2009.
[44]熊志江,刘安刚,杨新亮.沥青路面就地热再生工艺及设备研究[J].中国水运,2007(6)：49-51.
[45]刘泾堂.高性能沥青路面在润扬大桥南接线高速公路上的应用[I].城市道路与防洪,2007(8)：17-19.
[2]赵慧敏.热再生沥青的路用性能评价[D].大连：大连理工大学,2008.
[3]张昌波.沥青混凝土厂拌热再生技术研究[D].西安：长安大学,2006.
[4]任拴哲.沥青路面厂拌热再生及其设备关键技术研究[D].西安：长安大学,2008.
[5]Button, J W, Estakhri C K, Little D N. Overiew of hot in-palce recycling of bituminous pavement [J]. Transportation Research Board,1999(32):178-185.
[6]Tom Kazmierowski, Pamela Marks, Stephen Lee. Ten years performance review of in-situ hot mix recycling in Ontario [J]. Transportation Research Board,1999(14):126-139.
[7]雒泽华.沥青路面再生技术在我国的发展应用[J].建筑机械技术与管理,2007(7).
[8]潘万宝.沥青路面热再生在道路改建工程中试验应用[J].安徽建筑,2005(5)：123-124.
[9]屈朝彬,从保华,等.旧同沥青路面现场热再生技术在石安高速公路上的应用[J].公路交通科技,2006(11)：28-30.
[10]赵利明.SBS改性沥青路面现场热再生试验研究[D].大连：大连理工大学,2006.
[11]张园.Evotherm温拌沥青混合料节能减排效果评价[J].黑龙江交通科技,2010(5)：61-63.
[12]徐世国,张萍,何唯平.雏议道路沥青再生方法的选择与工程评价[C].第四届中国国际沥青大会,2006.
[13]杨军.聚合物改性沥青[M].北京：化学工业出版社,2007.
[14]沈金安.改性沥青与SMA路面[M].北京：人民交通出版社,1999.
[15]杨哲,程国香.聚合物改性沥青生产现状与发展趋势[J].石油沥青,2001(4)：1-6.
[16]耿久光.沥青老化机理及再生技术研究[D].西安：长安大学,2009.
[17]恽魁宏.有机化学[M].北京：高等教育出版社,1982.
[18]赵志军,陈明宁,等.沥青的老化机理与性能研究[J].建材世界,2009(2)：159-162.
[19]黄晓明,吴少鹏,赵永利.沥青与沥青混合料[M].南京：东南大学出版社,2002.
[20]N. A. Glotova, V. S.Gorshkov, B. I. Kats. Changes in rheological properties and chemical composition of asphalts upon aging [J]. Chemistry and Technology of Fuels and Oils,2001(8):278-280.
[21]庞凌.沥青紫外光老化特性研究[D].武汉：武汉理工大学,2008.
[22]M. S. Cortizo, D.O,Larsen, H. Bianchetto, etal. Effect of the thermal degradation of SBS copolymers during the ageing of modified asphalt [J]. Polymer Degradation and Stability,2004(86):275-282.
[23]王忠涛,朱国军,肖敏,等.基于红外光谱法的SBS沥青光氧老化机理[J].国外建材科技,2008(6)：86-90.
[24]Codrin Daranga. Characterization of aged polymer modified asphalt cements for recycling puroses [D]. Louisiana State University,2005.
[25]Xiaohu Lu, Ulf Isacsson. Chemical and rheological evaluation of ageing of SBS polymer modified bitumen [J], Fuel,1998(7)961-972.
[26]徐静,洪锦祥,等.有关SBS改性沥青老化研究的文献综述[J].石油沥青,2009(6)：41-46.
[27]徐静,洪锦祥,等.改性沥青老化机理及再生剂的研究[J].石油沥青,2011(3)：19-23.
[28]吕伟民.沥青混合料设计原理与方法[M].上海：同济大学出版社,2001.
[29]王鹏,黄卫尔.采东DAT添加剂的温拌沥青拌合温度[J].长沙理工大学学报(自然科学版),2010(2)：12-18.
[30]杨航.掺温拌剂的沥青及其混合料性能研究[D].长沙：长沙理工大学,2010.
[31]倪良松,陈华鑫,等.纤维沥青混合料增强作用机理分析[J].合肥工业大学学报(自然科学版),2003(5)：1033-1037.
[32]刘立新.沥青混合料粘弹性力学及材料学原理[M].北京：人民交通出版社,2006.
[33]郭博.基于材料组成的双掺外加剂沥青混合料路用性能研究[D].西安：长安大学,2011.
[34]窦刚玉.SBS改性沥青路面现场热再生技术研究[D].大连：大连理工大学,2011.
[35]Mohammad L N, Negulescu II, Wu Z, et al. Investigation of the Use of Recycled Polymer Modified Asphalt Binder and Mixtures [J]. Asphalt Paving Technology, 2003,72:551-594.
[36]Rajib Basu Mallick, Julie E Bradley, Richard L Bradbury. Evaluation of heated reclaimed asphalt pavement material and wax-modified asphalt for use in recycled hot-mix asphalt [J]. Transportation Research Record,2007,1998:112-122.
[37]Strategic Highway Research Program. Summary Report on low Temperature and Thermal Fatifue Cracking. SHRP-A/2R-90-011[R]. USA:Strategic Highway Research Program, 1990.
[38]葛折圣,黄晓明,许国光.用弯曲应变能方法评价沥青混合料的低温抗裂性能[I].东南大学学报(自然科学版).2002,32(4)：1-3.
[39]Lee S J, Rust J P, Hamoud H, et al. Fatigue cracking resistance of f iber-reinforced asphalt concrete[J]. Textile Research Journal,2005,75:123-128.
[40]Mohammad L N, Wu Z, Aglan M A. Characterization of fracture and fatigue resistance on recycled polymer-modified asphalt pavement[C].5th international rilem conference, France, May 5-7,2004. Limoges:RILHM,375-381.
[41]江燕青.沥青路面就地热再生技术的研究[D].西安：长安大学,2006.
[42]张竹平.沥青混凝土路面就地热再生艺及设备[J].筑路机械与施工机械化,2003(4)：20-22.
[43]刘金玲.沥青及沥青混合料就地热再生工艺研究[D].大连：大连理工大学,2009.
[44]熊志江,刘安刚,杨新亮.沥青路面就地热再生工艺及设备研究[J].中国水运,2007(6)：49-51.
[45]刘泾堂.高性能沥青路面在润扬大桥南接线高速公路上的应用[I].城市道路与防洪,2007(8)：17-19.