基于骨架嵌挤的13型沥青混合料配合比设计研究
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摘要
近年来我国公路事业突飞猛进,但由于公路关键技术储备不足,已建沥青路面中出现了不同程度的早期病害,其中以高温稳定性不足引起的破坏尤为突出。骨架嵌挤型沥青混合料有着优良的高温性能,得到了越来越多的道路工程师的青睐。
通过分析国内外研究成果,对骨架嵌挤型沥青混合料的粗集料几何特征、最紧密骨架结构状态进行了探索。对沥青混合料骨架结构影响因素进行了深入分析,认为粗集料几何特性、粗集料级配和混合料压实功是骨架嵌挤结构形成的关键因素。针对目前沥青混合料配合比设计中级配设计与沥青用量设计相互孤立的现状,以13型沥青混合料配合比设计为例,分别采用改变粗集料中粒径不同的两种碎石比例和改变粗细集料含量两种方式对混合料级配进行调整,对沥青混合料最紧密骨架结构状态油石比与矿料级配之间的关系进行了深入研究。研究结果表明,最紧密骨架结构状态油石比随矿料级配由粗变细的过程中呈现出先减小后增大的变化规律,通过该变化规律寻找油石比突变点并以突变点对应的油石比为设计油石比,对应的级配为设计级配,由此完成对混合料配合比的设计。性能验证结果表明,设计出的混合料能具有较好的力学性能与路用性能。此外,鉴于工程应用中对于沥青混合料最大理论密度试验方法存在争议,本文通过室内试验对集料有效密度的测定方法和对矿料级配的修正进行了深入探讨,得到了合理确定最大理论密度的计算方式和试验方法。通过本文的探讨与研究,可以为沥青混合料的配合比设计方法提供一定的参考依据,保证设计出的沥青混合料具有优异的力学性能和路用性能。
With the rapid development of economy, highway enterprises have been in the golden time of development in our country in recent years. However, due to the key technical reserve inadequate, the damages of pavement become serious soon, especially rutting damage. Asphalt mixture with skeleton dense structure has won increasing reputations by pavement engineers because of its good high-temperature performance.
Based on the previous researches at home and abroad, this paper is systematically explored the geometric characteristics of the coarse aggregate particles and the closest compact condition of the asphalt mixture with skeleton structure. It is deeply analyzed the influencing factors about the skeleton interlocking dense condition. It is considered that the important factors are the geometric characteristics and the gradation of the coarse aggregate particles as well as the compacting work. According to existing problem that gradation design and the bitumen-aggregate ratio design are isolated,this paper is deeply studied its connection based on the design of AC13 mix by adjusting the gradations through adjusting the relative content of two kinds sizes of coarse aggregate particles and adjusting the content of coarse aggregates. From the explorations and researches, it is indicated that the bitumen-aggregate ratio in the closest compact formation condition is decreased first, then increased with coarse aggregate's content reducing. From studying on the change law, it can be obtained a catastrophe point at which the bitumen-aggregate ratio is optimal and the corresponding gradation is the optimal gradation. So the asphalt mix design can be gained. From the laboratory verification tests, the asphalt mixture designed has excellent mechanical properties and pavement performances. Besides, aiming at the controversy on the methods of maximum theoretical density in engineering application,this paper is discussed the measure method of the aggregate effective density and the gradation correction. It is explored appropriate calculate formulas and test methods from theoretical analysis and laboratory tests. Through the discussion and the research,it can provide a reference of asphalt mix design for asphalt pavement, which makes asphalt mixture has the excellent performances.
通过分析国内外研究成果,对骨架嵌挤型沥青混合料的粗集料几何特征、最紧密骨架结构状态进行了探索。对沥青混合料骨架结构影响因素进行了深入分析,认为粗集料几何特性、粗集料级配和混合料压实功是骨架嵌挤结构形成的关键因素。针对目前沥青混合料配合比设计中级配设计与沥青用量设计相互孤立的现状,以13型沥青混合料配合比设计为例,分别采用改变粗集料中粒径不同的两种碎石比例和改变粗细集料含量两种方式对混合料级配进行调整,对沥青混合料最紧密骨架结构状态油石比与矿料级配之间的关系进行了深入研究。研究结果表明,最紧密骨架结构状态油石比随矿料级配由粗变细的过程中呈现出先减小后增大的变化规律,通过该变化规律寻找油石比突变点并以突变点对应的油石比为设计油石比,对应的级配为设计级配,由此完成对混合料配合比的设计。性能验证结果表明,设计出的混合料能具有较好的力学性能与路用性能。此外,鉴于工程应用中对于沥青混合料最大理论密度试验方法存在争议,本文通过室内试验对集料有效密度的测定方法和对矿料级配的修正进行了深入探讨,得到了合理确定最大理论密度的计算方式和试验方法。通过本文的探讨与研究,可以为沥青混合料的配合比设计方法提供一定的参考依据,保证设计出的沥青混合料具有优异的力学性能和路用性能。
With the rapid development of economy, highway enterprises have been in the golden time of development in our country in recent years. However, due to the key technical reserve inadequate, the damages of pavement become serious soon, especially rutting damage. Asphalt mixture with skeleton dense structure has won increasing reputations by pavement engineers because of its good high-temperature performance.
Based on the previous researches at home and abroad, this paper is systematically explored the geometric characteristics of the coarse aggregate particles and the closest compact condition of the asphalt mixture with skeleton structure. It is deeply analyzed the influencing factors about the skeleton interlocking dense condition. It is considered that the important factors are the geometric characteristics and the gradation of the coarse aggregate particles as well as the compacting work. According to existing problem that gradation design and the bitumen-aggregate ratio design are isolated,this paper is deeply studied its connection based on the design of AC13 mix by adjusting the gradations through adjusting the relative content of two kinds sizes of coarse aggregate particles and adjusting the content of coarse aggregates. From the explorations and researches, it is indicated that the bitumen-aggregate ratio in the closest compact formation condition is decreased first, then increased with coarse aggregate's content reducing. From studying on the change law, it can be obtained a catastrophe point at which the bitumen-aggregate ratio is optimal and the corresponding gradation is the optimal gradation. So the asphalt mix design can be gained. From the laboratory verification tests, the asphalt mixture designed has excellent mechanical properties and pavement performances. Besides, aiming at the controversy on the methods of maximum theoretical density in engineering application,this paper is discussed the measure method of the aggregate effective density and the gradation correction. It is explored appropriate calculate formulas and test methods from theoretical analysis and laboratory tests. Through the discussion and the research,it can provide a reference of asphalt mix design for asphalt pavement, which makes asphalt mixture has the excellent performances.
引文
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[2]张肖宁等.按体积法设计沥青混合料[J].哈尔滨建筑大学学报,1995,28(2):28-36.
[3]林绣贤.柔性路面结构设计方法[M].北京:人民交通出版社,1998.158.
[4]吕伟民.沥育混合料设计原理与方法[M].上海:同济大学大学出版社,2001.206.
[5]Nei C.Krutz and Peter E.Sebaaly.The Effect of Aggregate Gradation on Performance Deformation of Asphalt Conerete[J].Proeeedings Association of AsPhalt Paving Technologists,Vol.62,1993:451-473.?
[6]Seho1Z and Todd.Rheologieal Charaeteristies of Bitumen in Contact with Mineral Aggregate[J].Journal Association of Asphalt Paving Technologists.Vol.65,1996.
[7]张争奇.集料级配对沥青路面抗滑性能的影响[J].长安大学学报(自然科学版),2005,25(l):6-9.
[8]张争奇.矿料级配对沥青混合料低温性能的影响[J].长安大学学报(自然科学版),2005,25(2):l-5.
[9] Elie Y.Hajj.Hot Mix Asphalt Mixtures for Nevada’s Intersections[J],A dissertation submitted in Partial fulfillment of the requirements for the degree of Doetor of philosophy in Civil Engineering.2005.?
[10]张卫平.勉宁高速公路中面层SuperPave沥青混合料的设计和施工[J].公路,2005,(1):88～93.
[11] Gerald A.Huber.Development of the Superpave Gryatory Compactor.The Superpave AsPhalt Research Program[R],the University of Texas at Austin.2005.?
[12]栗亨乐.地质土质与筑路材料[M].北京:人民交通出版社,2000.159.?
[13]刘中林,田文,史建方等.高等级公路沥青混凝土路面新技术[M].北京:人民交通出版社,2002.10.
[14]贾渝.高性能沥青路面Superpave技术实用手册[R].江苏省交通科研院,2002,1(1):57-100.?
[15] Hand,A.J. and A.L. Epps. Impact of Gradation Relative to the Superpave Restricted Zone on HMA Performance[J].A Paper Submitted for Presentation and Publication at the 80th Annual Meeting of the Transportation Research Board,Washington,D.C.,January 2001.?
[16]Cooley L.A“Significance of Restricted Zone in Superpave Aggregate Gradation Specification"[J].Transportation Research Circular No.E-C043,TransPortation Research Board, National Research Council,Washington,D.C.,2002.?
[17] Kandhal,P.5.;Foo,K.Y. Mallick,R.B.”Critical Review of the Voids in Mineral AggregateRequirements in SUPERPAVE”[J].Transportation Research Record 1609,1998.?
[18] WesTrack.WesTrack Project Overview [J].Part3.Draft l:Febuary1.?
[19] VAVRIK W. R, PINE W J, HUBER G, et al.The Bailey Method of Gradation Evaluation: The Influence of Aggregate Gradation and Packing Characteristics on Voids in the Mineral Aggregate[J].Asphalt Paving Technology,2002,70 :132-175.
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[21] William R V,William J P,Samuel H C1 Bailey method for gradation selection in HMA mixture design [R].TransPortation Researeh Cireular Number E2C044,2002.?
[22] Manfred N Patrol,Teds.Vension;R.Gong HilK,and Krey Younger.Performance Related Testing of Stone Mastie Asphalt,AAPT,1995.
[23]张肖宁,王绍怀.沥青混合料组成设计的CAVF法[J].公路,2001,12:17-21.
[24]邱颖峰,梁亚军,许志鸿.对骨架密实结构判断标准的改进研究[J].公路交通科技,2008,25(2):10-14.
[25]陆阳,周永江,廖敬梅.粗级配沥青混合料骨架结构的细观分析[J].公路交通科技,2008,25(2):2-5.
[26]赵可,卢永贵,魏如喜.SMA高温稳定性研究[J].中国公路学报,2004,17(2):11-17.
[27]沙庆林.多碎石沥青混凝土SAC系列设计与施工[M].人民交通出版社.2005.235.?
[28]沙庆林.SAC和其他粗集料断级配的矿料级配设计方法[J].公路,2005,1(1):21-25.
[29]卢永贵,赵可,张登良.SMA骨架标准研究[J].长安大学学报,2002年,22(1):5-8.
[30]裴建中.沥青路面细观结构特性与衰变行为[M].北京:科学出版社,2010.262.?
[31]沈金安.沥青及沥青混合料路用性能[M].北京:人民交通出版社,2001.383.?
[32]Prithvi S K,Cynthia Y L,Frazier P J. Characterization Tests for Mineral Fillers Related to Performance of Asphalt Paving Mixtures[J]. NAPA Report January 1998(2):89-90.
[33] Vincent C.Janoo.Quantification of Shape,Angularity,and Surface Texture of Base Course Materials. Special Report 98-1[R].January 1998.
[34]Furnas,C C.Flow of gases through beds of broken solids[J]. U.S.Bureau of Mines Bulletin.1929,130-144.
[35]朱梦良,张起森,陈强沥青玛蹄脂碎石混合料的集料级配优化[J].中国公路学报,2001,14(2):1-5
[36]弗朗索瓦·德拉拉尔〔法〕著.廖欣,叶枝荣,李启令译混凝土混合料的配合[M].北京:化学工业出版社.2004.365.?
[37]杜顺成,戴经梁.基于散体力学理论的多级抗剪密级配设计方法[J].中国公路学报,2008, 21(1): 35-39.
[38]陆永青,计三有.散体材料弹性参数的估计[J].武汉交通科技大学学报,1997,21(2):178-185.
[39]张肖宁等.按体积法设计沥青混合料哈尔滨建筑大学学报[J].哈尔滨建筑大学学报,1995,28(2):28-36.
[40]吴旷怀,张肖宁.沥青混合料设计的主骨料空隙体积填充法研究及应用[J].中南公路工程,2004,29:58-62.
[41]葛折圣,张肖宁.粗集料间隙率最小值的测定方法及其应用[J].华南理工大学学报(自然科学版),2009,37(7):42-44.
[42]日本道路协会.铺装试验法便览[S].东京:日本道路协会,1997.157.
[43] Xudong.Wang,Lei.Zhang,Optimal Bitumen-Aggregate Ratio Selection Method of Hot Mix Asphalt Based on Closest Compaction Condition [J]. JOURNAL OF TESTING AND EVALUATION,2009, 37(5):490.
[44]田健.粗集料含量对沥青混合料高温稳定性影响的分析与研究[J].交通标准化,2003:156-159.
[45]张争奇,张卫平沥青混合料粉胶比[J].长安大学学报(自然科学版),2004.24(5):7-10.
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[49]谭忆秋,陈国明,李强.沥青混合料空隙率测定方法的初探[J].哈尔滨建筑大学学报,2002.35(3):120-124.
[50]沈金安.论压实沥青混合料的密度、空隙率与压实度问题[J].公路,1996,6:29-41.
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[52]公路工程沥青及沥青混合料试验规程(JTJ052—2000)[S].北京:人民交通出版社,2000.?
[53]公路沥青路面施工技术规范(JTG F40—2004)[S].北京:人民交通出版社,2004.?
[54]公路工程集料试验规程(JTG E42-2005)[S].北京:人民交通出版社.2005.
[2]张肖宁等.按体积法设计沥青混合料[J].哈尔滨建筑大学学报,1995,28(2):28-36.
[3]林绣贤.柔性路面结构设计方法[M].北京:人民交通出版社,1998.158.
[4]吕伟民.沥育混合料设计原理与方法[M].上海:同济大学大学出版社,2001.206.
[5]Nei C.Krutz and Peter E.Sebaaly.The Effect of Aggregate Gradation on Performance Deformation of Asphalt Conerete[J].Proeeedings Association of AsPhalt Paving Technologists,Vol.62,1993:451-473.?
[6]Seho1Z and Todd.Rheologieal Charaeteristies of Bitumen in Contact with Mineral Aggregate[J].Journal Association of Asphalt Paving Technologists.Vol.65,1996.
[7]张争奇.集料级配对沥青路面抗滑性能的影响[J].长安大学学报(自然科学版),2005,25(l):6-9.
[8]张争奇.矿料级配对沥青混合料低温性能的影响[J].长安大学学报(自然科学版),2005,25(2):l-5.
[9] Elie Y.Hajj.Hot Mix Asphalt Mixtures for Nevada’s Intersections[J],A dissertation submitted in Partial fulfillment of the requirements for the degree of Doetor of philosophy in Civil Engineering.2005.?
[10]张卫平.勉宁高速公路中面层SuperPave沥青混合料的设计和施工[J].公路,2005,(1):88～93.
[11] Gerald A.Huber.Development of the Superpave Gryatory Compactor.The Superpave AsPhalt Research Program[R],the University of Texas at Austin.2005.?
[12]栗亨乐.地质土质与筑路材料[M].北京:人民交通出版社,2000.159.?
[13]刘中林,田文,史建方等.高等级公路沥青混凝土路面新技术[M].北京:人民交通出版社,2002.10.
[14]贾渝.高性能沥青路面Superpave技术实用手册[R].江苏省交通科研院,2002,1(1):57-100.?
[15] Hand,A.J. and A.L. Epps. Impact of Gradation Relative to the Superpave Restricted Zone on HMA Performance[J].A Paper Submitted for Presentation and Publication at the 80th Annual Meeting of the Transportation Research Board,Washington,D.C.,January 2001.?
[16]Cooley L.A“Significance of Restricted Zone in Superpave Aggregate Gradation Specification"[J].Transportation Research Circular No.E-C043,TransPortation Research Board, National Research Council,Washington,D.C.,2002.?
[17] Kandhal,P.5.;Foo,K.Y. Mallick,R.B.”Critical Review of the Voids in Mineral AggregateRequirements in SUPERPAVE”[J].Transportation Research Record 1609,1998.?
[18] WesTrack.WesTrack Project Overview [J].Part3.Draft l:Febuary1.?
[19] VAVRIK W. R, PINE W J, HUBER G, et al.The Bailey Method of Gradation Evaluation: The Influence of Aggregate Gradation and Packing Characteristics on Voids in the Mineral Aggregate[J].Asphalt Paving Technology,2002,70 :132-175.
[20]刘中林,田文,史建方等.?高等级公路沥青混凝土路面新技术[M].北京:人民交通出版社,2002.10.
[21] William R V,William J P,Samuel H C1 Bailey method for gradation selection in HMA mixture design [R].TransPortation Researeh Cireular Number E2C044,2002.?
[22] Manfred N Patrol,Teds.Vension;R.Gong HilK,and Krey Younger.Performance Related Testing of Stone Mastie Asphalt,AAPT,1995.
[23]张肖宁,王绍怀.沥青混合料组成设计的CAVF法[J].公路,2001,12:17-21.
[24]邱颖峰,梁亚军,许志鸿.对骨架密实结构判断标准的改进研究[J].公路交通科技,2008,25(2):10-14.
[25]陆阳,周永江,廖敬梅.粗级配沥青混合料骨架结构的细观分析[J].公路交通科技,2008,25(2):2-5.
[26]赵可,卢永贵,魏如喜.SMA高温稳定性研究[J].中国公路学报,2004,17(2):11-17.
[27]沙庆林.多碎石沥青混凝土SAC系列设计与施工[M].人民交通出版社.2005.235.?
[28]沙庆林.SAC和其他粗集料断级配的矿料级配设计方法[J].公路,2005,1(1):21-25.
[29]卢永贵,赵可,张登良.SMA骨架标准研究[J].长安大学学报,2002年,22(1):5-8.
[30]裴建中.沥青路面细观结构特性与衰变行为[M].北京:科学出版社,2010.262.?
[31]沈金安.沥青及沥青混合料路用性能[M].北京:人民交通出版社,2001.383.?
[32]Prithvi S K,Cynthia Y L,Frazier P J. Characterization Tests for Mineral Fillers Related to Performance of Asphalt Paving Mixtures[J]. NAPA Report January 1998(2):89-90.
[33] Vincent C.Janoo.Quantification of Shape,Angularity,and Surface Texture of Base Course Materials. Special Report 98-1[R].January 1998.
[34]Furnas,C C.Flow of gases through beds of broken solids[J]. U.S.Bureau of Mines Bulletin.1929,130-144.
[35]朱梦良,张起森,陈强沥青玛蹄脂碎石混合料的集料级配优化[J].中国公路学报,2001,14(2):1-5
[36]弗朗索瓦·德拉拉尔〔法〕著.廖欣,叶枝荣,李启令译混凝土混合料的配合[M].北京:化学工业出版社.2004.365.?
[37]杜顺成,戴经梁.基于散体力学理论的多级抗剪密级配设计方法[J].中国公路学报,2008, 21(1): 35-39.
[38]陆永青,计三有.散体材料弹性参数的估计[J].武汉交通科技大学学报,1997,21(2):178-185.
[39]张肖宁等.按体积法设计沥青混合料哈尔滨建筑大学学报[J].哈尔滨建筑大学学报,1995,28(2):28-36.
[40]吴旷怀,张肖宁.沥青混合料设计的主骨料空隙体积填充法研究及应用[J].中南公路工程,2004,29:58-62.
[41]葛折圣,张肖宁.粗集料间隙率最小值的测定方法及其应用[J].华南理工大学学报(自然科学版),2009,37(7):42-44.
[42]日本道路协会.铺装试验法便览[S].东京:日本道路协会,1997.157.
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