基于路用性能的应力吸收层沥青混合料设计方法研究
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摘要
反射裂缝一直以来是水泥混凝土路面加铺沥青面层的主要病害,如何防治反射裂缝,更是困扰道路工程工作者的一个难题。针对该类病害,道路工程研究者投入大量精力在其研究工作上,其主要集中在以下几个方面:(1)水泥混凝土沥青加铺层反射裂缝产生机理及力学分析研究;(2)水泥混凝土沥青加铺层防治反射裂缝措施研究;(3)防治反射裂缝新材料新技术的研究。无论开展哪一方面的研究,最终目的都是解决水泥混凝土沥青加铺层反射裂缝,并延长加铺层使用寿命。在众多的防治反射裂缝措施中,采用沥青混合料作为应力吸收层是目前是水泥混凝土路面加铺沥青面层防治反射裂缝的主要措施。既然采用沥青混合料作为应力吸收层,必然将涉及到应力吸收层沥青混合料配合比设计。根据应力吸收层沥青混合料的功能特点,显然传统的以高温为主的普通沥青混合料配合比设计方法已经不适应应力吸收层沥青混合料。因此,亟需一种适用于应力吸收层沥青混合料的新设计方法。
众所周知,沥青混合料配合比设计主要包括级配设计及油石比确定。因此,本文围绕混合料配合比设计,主要进行了如下三方面工作。
首先,探讨具备何种结构特点的级配更适应于应力吸收层沥青混合料。考虑目前应用于应力吸收层沥青混合料的级配特点,设计出七种级配(其中,AC5三种级配,AC10四种级配),且该七种级配所确定的级配范围将目前应用与应力吸收层沥青混合料的级配类型均包括在内。通过室内试验,分别对试验级配混合料进行体积参数验证、高温稳定性验证、抗裂性能(低温抗裂和抗反射裂缝能力)验证以及施工和易性验证。综合各性能参数,最终,确定适用于应力吸收层沥青混合料的级配。
其次,综合考虑应力吸收层沥青混合料高温稳定性、抗弯拉性能以及施工和易性,提出一种适用于应力吸收层沥青混合料的油石比设计方法。即,采用最佳紧密状态油石比为下限,谢伦堡析漏试验析漏损失率拐点油石比为上限,并根据路用性能最优确定应力吸收层最佳油石比。
最后,根据本文应力吸收层所提出的配合比设计方法,通过实体工程验证,并取得良好的使用效果。
Crack reflection has been main diseases of the cement concrete pavement overlaid Asphalt Surface. How to prevent Crack Rflection, is a difficult problem ,and it troubled road engineering workers. Based on the class of disease, Road Engineering Researchers have invested considerable effort to research work on it,it mainly focused the following several aspects:(1) the research on the mechanism of Produce mechanism and mechanics analysis on Crack Rflection;(2) the research on measures of preventing crack reflection;(3) the research on the new material and new technique of preventing crack reflection. No matter what kinds of research, the final purpose is solving problems about Crack Rflection and prolonging the service life of asphalt overlay. Among the numerous measures about preventing Crack Rflection,Using asphalt mixture as stress absorbing layer is the main measure of preventing Crack Rflection about the cement concrete pavement overlaid Asphalt Surface. Now that using asphalt mixture as stress absorbing layer,it should be involved in the design of mix proportion about asphalt mixture used as stress absorbing layer. According to function characteristics of stress absorbing layer, The traditional design procedures which dominated by high-temperature stability obviously don’t suit this asphalt mixture. Therefore it urgently need new the new design of mix proportion which suit asphalt mixture used as stress absorbing layer.
As we all know, the design of mix proportion about asphalt mixture mainly includes gradation design and asphalt-aggregate ratio design. Therefore this paper focus on mix proportion and proceed two aspects of the work as follows:
First, this paper discuss what structure characteristics of gradation is more suitable for asphalt mixture as stress absorbing layer. Considering the structure characteristics of gradation used as stress absorbing layer at present,this paper design seven gradation (including three AC5 gradation and four AC10 gradation).The gradation range determined by seven gradation includes the gradation range which used to asphalt mixture as stress absorbing layer. According to laboratory test. This paper respectively adopts volumetric parameter、high-temperature stability、crack resistance performance(Low Temperature crack and reflection crack)、workable performance to verify the performance of asphalt mixture. Comprehensively considered each performance parameters. Finally, this paper select the gradation which is suitable for asphalt mixture used as stress absorbing layer.
Then, Comprehensively considered volumetric parameter、high-temperature stability、crack resistance performance、workable performance, this paper Proposes the method of the design based on equilibrium of pavement performance stress absorbing layer. This method adopts the asphalt-aggregate ratio of closest compact condition as Lower Limit, adopts the asphalt-aggregate ratio of loss rate of Schellenberg Binder Drainage Test as Upper Limit, and finally determine the optimum asphalt-aggregate ratio by the optimum pavement performance.
Finally,according to the method of mix proportion proposed by this paper,and through the verification of the entity engineering,it achieved good use effect.
众所周知,沥青混合料配合比设计主要包括级配设计及油石比确定。因此,本文围绕混合料配合比设计,主要进行了如下三方面工作。
首先,探讨具备何种结构特点的级配更适应于应力吸收层沥青混合料。考虑目前应用于应力吸收层沥青混合料的级配特点,设计出七种级配(其中,AC5三种级配,AC10四种级配),且该七种级配所确定的级配范围将目前应用与应力吸收层沥青混合料的级配类型均包括在内。通过室内试验,分别对试验级配混合料进行体积参数验证、高温稳定性验证、抗裂性能(低温抗裂和抗反射裂缝能力)验证以及施工和易性验证。综合各性能参数,最终,确定适用于应力吸收层沥青混合料的级配。
其次,综合考虑应力吸收层沥青混合料高温稳定性、抗弯拉性能以及施工和易性,提出一种适用于应力吸收层沥青混合料的油石比设计方法。即,采用最佳紧密状态油石比为下限,谢伦堡析漏试验析漏损失率拐点油石比为上限,并根据路用性能最优确定应力吸收层最佳油石比。
最后,根据本文应力吸收层所提出的配合比设计方法,通过实体工程验证,并取得良好的使用效果。
Crack reflection has been main diseases of the cement concrete pavement overlaid Asphalt Surface. How to prevent Crack Rflection, is a difficult problem ,and it troubled road engineering workers. Based on the class of disease, Road Engineering Researchers have invested considerable effort to research work on it,it mainly focused the following several aspects:(1) the research on the mechanism of Produce mechanism and mechanics analysis on Crack Rflection;(2) the research on measures of preventing crack reflection;(3) the research on the new material and new technique of preventing crack reflection. No matter what kinds of research, the final purpose is solving problems about Crack Rflection and prolonging the service life of asphalt overlay. Among the numerous measures about preventing Crack Rflection,Using asphalt mixture as stress absorbing layer is the main measure of preventing Crack Rflection about the cement concrete pavement overlaid Asphalt Surface. Now that using asphalt mixture as stress absorbing layer,it should be involved in the design of mix proportion about asphalt mixture used as stress absorbing layer. According to function characteristics of stress absorbing layer, The traditional design procedures which dominated by high-temperature stability obviously don’t suit this asphalt mixture. Therefore it urgently need new the new design of mix proportion which suit asphalt mixture used as stress absorbing layer.
As we all know, the design of mix proportion about asphalt mixture mainly includes gradation design and asphalt-aggregate ratio design. Therefore this paper focus on mix proportion and proceed two aspects of the work as follows:
First, this paper discuss what structure characteristics of gradation is more suitable for asphalt mixture as stress absorbing layer. Considering the structure characteristics of gradation used as stress absorbing layer at present,this paper design seven gradation (including three AC5 gradation and four AC10 gradation).The gradation range determined by seven gradation includes the gradation range which used to asphalt mixture as stress absorbing layer. According to laboratory test. This paper respectively adopts volumetric parameter、high-temperature stability、crack resistance performance(Low Temperature crack and reflection crack)、workable performance to verify the performance of asphalt mixture. Comprehensively considered each performance parameters. Finally, this paper select the gradation which is suitable for asphalt mixture used as stress absorbing layer.
Then, Comprehensively considered volumetric parameter、high-temperature stability、crack resistance performance、workable performance, this paper Proposes the method of the design based on equilibrium of pavement performance stress absorbing layer. This method adopts the asphalt-aggregate ratio of closest compact condition as Lower Limit, adopts the asphalt-aggregate ratio of loss rate of Schellenberg Binder Drainage Test as Upper Limit, and finally determine the optimum asphalt-aggregate ratio by the optimum pavement performance.
Finally,according to the method of mix proportion proposed by this paper,and through the verification of the entity engineering,it achieved good use effect.
引文
[1]王敏.张东长.窦彦磊.“白加黑“工程中常用反射裂缝防治材料效果分析研究[J].公路交通科技.2010.8(4):38-42
[2]王朝辉.王选仓.杨维国.格栅加筋沥青加铺层结构轮载疲劳模拟对比试验[J].长安大学学报(自然科学版).2008.6(28):16-20
[3]胡长顺.曹东伟.有防裂夹层结构的旧水泥混凝土路面沥青加铺层力学分析[J].中国公路学报.1995.(12):1-5
[4]Luis Loria. Peter E. Sebaaly. Elie Y. Hajj. Long-Term Performance of Reflective Cracking Mitigation Techniques in Nevada. .TRB.2008
[5]Joe W. Button. Robert L. Lytton. Guidelines for Using Geosynthetics with Hot Mix Asphalt Overlays to Reduce Reflective Cracking. TRB.2007
[6]廖卫东.基于应力吸收层的旧水泥混凝土路面沥青加铺层结构与材料研究[博士学位论文].武汉.武汉理工大学.2007
[7]汤文.孙立军等.应力吸收层防治沥青加铺层反射裂缝的力学分析[J].公路工程.2008.33(4):1～4
[8] Jongeun Baek. Imad L. Al-Qadi.Sand Mix Interlayer to Control Reflective Cracking in Hot-Mix Asphalt Overlay..TRB.2011
[9]美国科氏材料(中国)公司.科氏路面解决方案·反射裂缝应力吸收层系统.2001年
[10]郑俊杰.阳晏.Strata应力吸收层在我国的首次应用[J].公路交通科技.2003.6(3):19-22.
[11]田加亨,苏华友等. STRATA技术在路面防反射裂缝中的应用研究[J].养护机械与施工技术.2006.9():33-35
[12]何雄伟.薛永杰等.旧混凝土路面沥青混合料加铺层的结构设计[J].武汉理工大学学报.2003.12(25).
[13] J. Baek, I.L. Al-Qadi, and W.G. Buttlar. Numerical Modeling and Life Cycle Cost Analysis of Hot-Mix Asphalt Overlay with Steel Netting Interlayer System for Airport Pavements.TRB.2009
[14] Thomas Bennert. Ali Maher. Field and Laboratory Evaluation of a Reflective Crack Interlayer in New Jersey.TRB.2008
[15]吴旷怀.应力吸收夹层沥青混合料设计研究[J].公路交通科技.2006.12(23):18-20
[16]周燕、陈拴发、刘丹等.SAMPAVE沥青混合料级配设计研究[J].郑州大学学报(工业版).2010.31(1):30~33
[17]李祖仲、陈拴发等.应力吸收层材料拉伸与拉压疲劳试验[J].公路.2007.(10):190~194
[18]邢明亮,李祖仲等.应力吸收层沥青混合料的低温抗裂性能[J].河北工业大学学报.2009.38(6):68~72
[19]石昆磊.高粘性沥青应力吸收层防治沥青路面反射裂缝的研究[硕士学会论文].哈尔滨.哈尔滨工业大学.2006
[20]交通部公路科学研究所.北京市典型结构研究.2002年.
[21]中华人民共和国行业标准.公路沥青路面施工技术规范(TJGF4O一2004).人民交通出版社,2004 [22 ]Allen L C,Brian J D,Prowell M R etal.Bulk Specific Gravity Round-robin Using the Corelok Vacuum Sealing Device[R].NCAT Report 02-11,FHWA-IF-02-044,2002.5-10
[23]斐建中.沥青路面细观结构特性与衰变行为(M).科学出版社.2010
[24]孙立军.沥青路面结构行为理论(M).人民交通出版社.2005
[25] Youngguk Seo,Omar El-Haggan,Mark King,S. Joon Lee P.E.,Y. Richard Kim P.E.. Air Void Models for the Dynamic Modulus, Fatigue Cracking,and Rutting of Asphalt Concrete[J], JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2007.10:875-883
[26] Edith Arambula, Eyad Masad, and Amy Epps Martin. Influence of Air Void Distribution on the Moisture Susceptibility of Asphalt Mixes[J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2007.8:655-664
[27]Xinjun Li,R. Christopher Williams,Mihai O. Marasteanu, Timothy R. Clyne,Eddie Johnson. Investigation of In-Place Asphalt Film Thickness and Performance of Hot-Mix Asphalt Mixtures. Journal of Materials in Civil Engineering.2009.6:263~270
[28] Kumar, W.H.Goetz.Asphalt Hardening as Affected by Film Thickness,Voids and Permeability in Asphalt mixtures.AAPT,1977,46
[29]Kumar,W.H.Goetz.Asphalt Hardening as Affected by Film Thickness,Voids and Permeability in Asphalt mixtures.AAPT,1977,46
[30]王衡,杨大田.沥青膜厚度对沥青混合料老化性质的影响.重庆交通学院学报,2006,2(25):49~51
[31]Campan,W.H.,J.R.Smith,L.G.Erickson,L.R.Mertz.The Relationships Between Voids,Surface Area.Film Thickness and Stability in Bituminous Paving Mixtures.AAPT,1958,28
[32] Burak Sengoz, Ali Topal. Minimum voids in mineral aggregate in hot-mix asphalt based onasphalt film thickness. Building and Environment.2007 (42): 3629–3635
[33]中华人民共和国行业标准.公路沥青路面施工技术规范(JTG F40-2004).人民交通出版社.2004
[34]刘涛,郝培文.沥青混合料低温抗裂性评价方法研究[J].同济大学学报.2002.30(12):1468-1471
[35]沈金安.改性沥青与SMA路面(M).人民交通出版社.1999
[36] xudong.wang ,lei.zhang, Optimal Bitumen-Aggregate Ratio Selection Method of Hot MixAsphalt Based on Closest Compaction Condition[J],Journal Of Testing And Evaluation.Amer Soc Testing Materials, 100 Barr Harbor DR, W Conshohocken, PA 19428-2959 USA, 2009,37(5):490-495
[2]王朝辉.王选仓.杨维国.格栅加筋沥青加铺层结构轮载疲劳模拟对比试验[J].长安大学学报(自然科学版).2008.6(28):16-20
[3]胡长顺.曹东伟.有防裂夹层结构的旧水泥混凝土路面沥青加铺层力学分析[J].中国公路学报.1995.(12):1-5
[4]Luis Loria. Peter E. Sebaaly. Elie Y. Hajj. Long-Term Performance of Reflective Cracking Mitigation Techniques in Nevada. .TRB.2008
[5]Joe W. Button. Robert L. Lytton. Guidelines for Using Geosynthetics with Hot Mix Asphalt Overlays to Reduce Reflective Cracking. TRB.2007
[6]廖卫东.基于应力吸收层的旧水泥混凝土路面沥青加铺层结构与材料研究[博士学位论文].武汉.武汉理工大学.2007
[7]汤文.孙立军等.应力吸收层防治沥青加铺层反射裂缝的力学分析[J].公路工程.2008.33(4):1～4
[8] Jongeun Baek. Imad L. Al-Qadi.Sand Mix Interlayer to Control Reflective Cracking in Hot-Mix Asphalt Overlay..TRB.2011
[9]美国科氏材料(中国)公司.科氏路面解决方案·反射裂缝应力吸收层系统.2001年
[10]郑俊杰.阳晏.Strata应力吸收层在我国的首次应用[J].公路交通科技.2003.6(3):19-22.
[11]田加亨,苏华友等. STRATA技术在路面防反射裂缝中的应用研究[J].养护机械与施工技术.2006.9():33-35
[12]何雄伟.薛永杰等.旧混凝土路面沥青混合料加铺层的结构设计[J].武汉理工大学学报.2003.12(25).
[13] J. Baek, I.L. Al-Qadi, and W.G. Buttlar. Numerical Modeling and Life Cycle Cost Analysis of Hot-Mix Asphalt Overlay with Steel Netting Interlayer System for Airport Pavements.TRB.2009
[14] Thomas Bennert. Ali Maher. Field and Laboratory Evaluation of a Reflective Crack Interlayer in New Jersey.TRB.2008
[15]吴旷怀.应力吸收夹层沥青混合料设计研究[J].公路交通科技.2006.12(23):18-20
[16]周燕、陈拴发、刘丹等.SAMPAVE沥青混合料级配设计研究[J].郑州大学学报(工业版).2010.31(1):30~33
[17]李祖仲、陈拴发等.应力吸收层材料拉伸与拉压疲劳试验[J].公路.2007.(10):190~194
[18]邢明亮,李祖仲等.应力吸收层沥青混合料的低温抗裂性能[J].河北工业大学学报.2009.38(6):68~72
[19]石昆磊.高粘性沥青应力吸收层防治沥青路面反射裂缝的研究[硕士学会论文].哈尔滨.哈尔滨工业大学.2006
[20]交通部公路科学研究所.北京市典型结构研究.2002年.
[21]中华人民共和国行业标准.公路沥青路面施工技术规范(TJGF4O一2004).人民交通出版社,2004 [22 ]Allen L C,Brian J D,Prowell M R etal.Bulk Specific Gravity Round-robin Using the Corelok Vacuum Sealing Device[R].NCAT Report 02-11,FHWA-IF-02-044,2002.5-10
[23]斐建中.沥青路面细观结构特性与衰变行为(M).科学出版社.2010
[24]孙立军.沥青路面结构行为理论(M).人民交通出版社.2005
[25] Youngguk Seo,Omar El-Haggan,Mark King,S. Joon Lee P.E.,Y. Richard Kim P.E.. Air Void Models for the Dynamic Modulus, Fatigue Cracking,and Rutting of Asphalt Concrete[J], JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2007.10:875-883
[26] Edith Arambula, Eyad Masad, and Amy Epps Martin. Influence of Air Void Distribution on the Moisture Susceptibility of Asphalt Mixes[J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2007.8:655-664
[27]Xinjun Li,R. Christopher Williams,Mihai O. Marasteanu, Timothy R. Clyne,Eddie Johnson. Investigation of In-Place Asphalt Film Thickness and Performance of Hot-Mix Asphalt Mixtures. Journal of Materials in Civil Engineering.2009.6:263~270
[28] Kumar, W.H.Goetz.Asphalt Hardening as Affected by Film Thickness,Voids and Permeability in Asphalt mixtures.AAPT,1977,46
[29]Kumar,W.H.Goetz.Asphalt Hardening as Affected by Film Thickness,Voids and Permeability in Asphalt mixtures.AAPT,1977,46
[30]王衡,杨大田.沥青膜厚度对沥青混合料老化性质的影响.重庆交通学院学报,2006,2(25):49~51
[31]Campan,W.H.,J.R.Smith,L.G.Erickson,L.R.Mertz.The Relationships Between Voids,Surface Area.Film Thickness and Stability in Bituminous Paving Mixtures.AAPT,1958,28
[32] Burak Sengoz, Ali Topal. Minimum voids in mineral aggregate in hot-mix asphalt based onasphalt film thickness. Building and Environment.2007 (42): 3629–3635
[33]中华人民共和国行业标准.公路沥青路面施工技术规范(JTG F40-2004).人民交通出版社.2004
[34]刘涛,郝培文.沥青混合料低温抗裂性评价方法研究[J].同济大学学报.2002.30(12):1468-1471
[35]沈金安.改性沥青与SMA路面(M).人民交通出版社.1999
[36] xudong.wang ,lei.zhang, Optimal Bitumen-Aggregate Ratio Selection Method of Hot MixAsphalt Based on Closest Compaction Condition[J],Journal Of Testing And Evaluation.Amer Soc Testing Materials, 100 Barr Harbor DR, W Conshohocken, PA 19428-2959 USA, 2009,37(5):490-495