大粒径沥青混合料路用性能研究
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摘要
随着交通量的快速增长和轴载的加重,沥青路面普遍出现了抗车辙能力不足和耐久性较差等质量问题。大粒径沥青混合料具有良好的抵抗反射裂缝和抗车辙能力,可有效解决以上问题。本文结合河南省交通厅科研项目“大粒径沥青混合料基层应用技术研究”课题,在借鉴国内外LSM研究成果的基础上,进行大粒径沥青混合料的路用性能研究。
本文分析探讨了大粒径沥青混合料的组成结构和强度的主要影响因素。采用大马歇尔沥青混合料设计法和旋转压实体积设计法分别对大粒径沥青混合料进行设计,分析了两者的优缺点。研究了大粒径沥青混合料的高温稳定性,车辙试验结果表明LSM抗车辙能力远大于普通沥青混合料抗车辙能力,LSM集料级配对车辙起决定性作用,形成骨架嵌挤结构是LSM具有良好的高温稳定性的关键。同时,采用浸水大马歇尔试验和冻融劈裂试验方法来评价分析大粒径沥青混合料的水稳定性,结果表明大粒径沥青混合料具有较好的抗水损害能力。对大粒径沥青混合料进行了回弹模量试验、抗压试验、劈裂试验,并将大粒径沥青混合料的力学性能与普通沥青混合料、半刚性材料的力学性能进行了对比分析,研究表明大粒径沥青混合料回弹模量和抗压强度与半刚性材料90d龄期的相当,抗拉强度比半刚性材料大一倍左右。根据LSM的室内为试验研究结果,修筑了试验路来检验LSM的路用性能,检测结果表明大粒径沥青混合料具有良好的路用性能。
With the highway volumes and axle loads' fast increasing, the inadequate rutting resistance and poor durability to the asphalt pavement and etc, become the important problems in recent years. Because the Large Stone asphalt Mixes (LSM), has the good properties of eliminating the reflect crack and resistance rut, it can effectively solve these problems. Based on researches on LSM home and abroad, and combined with the project " the LSM base application study" of the Community Department of Henan province, the paper studies the pavement performance of LSM.Firstly, the paper plainly analyses composition and structure of LSM, based on the asphalt mixture composition theory. Secondly, the paper studies the large-scale Marshall design method and the SHRP Gyration Compact void design method to design LSM individually, what is more, analyses their properties. Thirdly, the paper studies LSM high temperature stability by wheel track test, tests show the rutting resistance of LSM is far great than that of the normal HMA, besides, the aggregate gradation of LSM and skeleton-compact structure is vital to the rutting resistance. Fourthly, the paper studies LSM water stability by the water submerged large Scale Marshall and the freeze -thraw test, tests show the water damage resistance of LSM is well. Fifthly, the paper studies mechanical property of LSM by tests, further, making comparative studies between LSM and normal asphalt mixes or semi-stiff material differently. Research shows that the elastic modulus and resistance press of LSM are almost equal to that of semi-stiff materials, but the tensile splitting strength of LSM is almost 2 times larger than that of semi-rigid materials after 90 days. Finally, according to the experiments on LSM in and out, test road is built; construction technology of LSM is studied. To conclude, the results above show LSM has excellent pavement performance.
本文分析探讨了大粒径沥青混合料的组成结构和强度的主要影响因素。采用大马歇尔沥青混合料设计法和旋转压实体积设计法分别对大粒径沥青混合料进行设计,分析了两者的优缺点。研究了大粒径沥青混合料的高温稳定性,车辙试验结果表明LSM抗车辙能力远大于普通沥青混合料抗车辙能力,LSM集料级配对车辙起决定性作用,形成骨架嵌挤结构是LSM具有良好的高温稳定性的关键。同时,采用浸水大马歇尔试验和冻融劈裂试验方法来评价分析大粒径沥青混合料的水稳定性,结果表明大粒径沥青混合料具有较好的抗水损害能力。对大粒径沥青混合料进行了回弹模量试验、抗压试验、劈裂试验,并将大粒径沥青混合料的力学性能与普通沥青混合料、半刚性材料的力学性能进行了对比分析,研究表明大粒径沥青混合料回弹模量和抗压强度与半刚性材料90d龄期的相当,抗拉强度比半刚性材料大一倍左右。根据LSM的室内为试验研究结果,修筑了试验路来检验LSM的路用性能,检测结果表明大粒径沥青混合料具有良好的路用性能。
With the highway volumes and axle loads' fast increasing, the inadequate rutting resistance and poor durability to the asphalt pavement and etc, become the important problems in recent years. Because the Large Stone asphalt Mixes (LSM), has the good properties of eliminating the reflect crack and resistance rut, it can effectively solve these problems. Based on researches on LSM home and abroad, and combined with the project " the LSM base application study" of the Community Department of Henan province, the paper studies the pavement performance of LSM.Firstly, the paper plainly analyses composition and structure of LSM, based on the asphalt mixture composition theory. Secondly, the paper studies the large-scale Marshall design method and the SHRP Gyration Compact void design method to design LSM individually, what is more, analyses their properties. Thirdly, the paper studies LSM high temperature stability by wheel track test, tests show the rutting resistance of LSM is far great than that of the normal HMA, besides, the aggregate gradation of LSM and skeleton-compact structure is vital to the rutting resistance. Fourthly, the paper studies LSM water stability by the water submerged large Scale Marshall and the freeze -thraw test, tests show the water damage resistance of LSM is well. Fifthly, the paper studies mechanical property of LSM by tests, further, making comparative studies between LSM and normal asphalt mixes or semi-stiff material differently. Research shows that the elastic modulus and resistance press of LSM are almost equal to that of semi-stiff materials, but the tensile splitting strength of LSM is almost 2 times larger than that of semi-rigid materials after 90 days. Finally, according to the experiments on LSM in and out, test road is built; construction technology of LSM is studied. To conclude, the results above show LSM has excellent pavement performance.
引文
[1] 沙庆林.高等级公路半刚性基层沥青路面.北京:人民交通出版社,1999.[3]
[2] 江苏交通科学研究院.大粒径沥青混合料的研究报告.2002.1
[3] 张肖宁.沥青混合料抵抗反射裂缝能力的评价方法研究.华南理工大学学报,2001,7
[4] 何兆益等.碎石基层防止沥青路面反射裂缝结构的应用研究.华东公路,1997,(1)
[5] NCHRP REPORT386. Design and Evaluation of Large Stone Asphalt Mixes. Transportation Research Board National Research council. 2000.
[6] Prithvi S. Kandal. Large Stone Asphalt Mixes: DESIGN AND CONSTRUCTION. NCAT Report 1989
[7] Prithvi. S. Kandal. Large Stone Asphalt Mixes: DESIGN AND CONSTRUCTION. NCAT Report 1990.
[8] 曾宇彤等.美国永久性路面结构.中外公路.2003,6
[9] 王旭东.大型马歇尔击实试验研究.公路交通科技.2002,2.
[10] 王富玉.大粒径沥青混合料路用性能研究[硕士学位论文].长安大学,2001,2
[11] 刘中林等.沥青路面的新技术、新方法.北京:人民交通出版社.2003,5.
[12] 沈金安.沥青与沥青混合料路用性能.北京:人民交通出版社.2001,5.
[13] 徐培华等.公路工程混合料配合比设计与试验技术手册.人民交通出版社.2001,8.
[14] 吕伟民.沥青混合料设计方法与原理.上海:同济大学出版社.2001,1.
[15] 李立寒等.道路建筑材料.上海:同济大学出版社.1997,7.
[16] 张登良.沥青与沥青混合料.北京:人民交通出版社.1993,7.
[17] Kandhals. Large Stone Asphalt Mixes: Design and Construction. NCAT Report1990(4).
[18] KENTUCKYSExperiencewithLargeSizeAggregateinBituminousHot-Mix. AAPT, 1991. ComparativeEvaluationof4-inchand6-inchDiame-ter. AAPT. 1992. [4]
[19] KandhalS, BrownE R. SpecimensforTestingLargeStoneAsphaltmixes. NCATReport, 1990.
[20] Williams,EllisG. Design and Constuction of Large Stone HMA Bases in Kentucky. Hot Mix Asphalt Technology. 1998.
[21] DanSosnovske. EvaluationofRuttingPotentialofOregonSuffaceMixes, AAPT, 1994
[22] 郝培文.沥青混合料配合比设计方法研究[博士学位论文].西安公路交通大学,1996,2
[23] 张登良.沥青路面.北京:人民交通出版社,1999.
[24] 严家及.沥青材料性能学.北京:人民交通出版社,1990.
[25] 张肖宁等.按体积法设计沥青混合料.哈尔滨建筑大学学报.1995,4
[26] 袁迎捷等.沥青混合料压实机理新解.公路.2002,2
[27] 贾渝等.论我国沥青混合料设计方法.公路.2001,8
[28] 张宗涛等.间断密级配沥青混合料配合比设计方法.西安公路交通大学学报.2001,10
[29] 刘红等.新型级配图的分析与验证.同济大学学报.2003,3
[30] 李一鸣等.沥青路面车辙形成机理力学分析.东南大学学报.1994,1
[31] 沈金安.关于沥青混合料的均匀性和离析问题.公路交通科技.2001,12
[32] 余叔藩.沥青混合料设计中沥青用量的确定.公路.2002,6
[33] 孙立军等.沥青路面结构行为理论.上海:同济大学出版社.2003,4
[34] 黄晓明等.沥青稳定基层路面结构综述.河南交通科技,1999,6
[35] 郝培文等.不同沥青用量与沥青组成对沥青混合料抗车辙性能的影响.西安公路交通大学学报,1998,(7)
[2] 江苏交通科学研究院.大粒径沥青混合料的研究报告.2002.1
[3] 张肖宁.沥青混合料抵抗反射裂缝能力的评价方法研究.华南理工大学学报,2001,7
[4] 何兆益等.碎石基层防止沥青路面反射裂缝结构的应用研究.华东公路,1997,(1)
[5] NCHRP REPORT386. Design and Evaluation of Large Stone Asphalt Mixes. Transportation Research Board National Research council. 2000.
[6] Prithvi S. Kandal. Large Stone Asphalt Mixes: DESIGN AND CONSTRUCTION. NCAT Report 1989
[7] Prithvi. S. Kandal. Large Stone Asphalt Mixes: DESIGN AND CONSTRUCTION. NCAT Report 1990.
[8] 曾宇彤等.美国永久性路面结构.中外公路.2003,6
[9] 王旭东.大型马歇尔击实试验研究.公路交通科技.2002,2.
[10] 王富玉.大粒径沥青混合料路用性能研究[硕士学位论文].长安大学,2001,2
[11] 刘中林等.沥青路面的新技术、新方法.北京:人民交通出版社.2003,5.
[12] 沈金安.沥青与沥青混合料路用性能.北京:人民交通出版社.2001,5.
[13] 徐培华等.公路工程混合料配合比设计与试验技术手册.人民交通出版社.2001,8.
[14] 吕伟民.沥青混合料设计方法与原理.上海:同济大学出版社.2001,1.
[15] 李立寒等.道路建筑材料.上海:同济大学出版社.1997,7.
[16] 张登良.沥青与沥青混合料.北京:人民交通出版社.1993,7.
[17] Kandhals. Large Stone Asphalt Mixes: Design and Construction. NCAT Report1990(4).
[18] KENTUCKYSExperiencewithLargeSizeAggregateinBituminousHot-Mix. AAPT, 1991. ComparativeEvaluationof4-inchand6-inchDiame-ter. AAPT. 1992. [4]
[19] KandhalS, BrownE R. SpecimensforTestingLargeStoneAsphaltmixes. NCATReport, 1990.
[20] Williams,EllisG. Design and Constuction of Large Stone HMA Bases in Kentucky. Hot Mix Asphalt Technology. 1998.
[21] DanSosnovske. EvaluationofRuttingPotentialofOregonSuffaceMixes, AAPT, 1994
[22] 郝培文.沥青混合料配合比设计方法研究[博士学位论文].西安公路交通大学,1996,2
[23] 张登良.沥青路面.北京:人民交通出版社,1999.
[24] 严家及.沥青材料性能学.北京:人民交通出版社,1990.
[25] 张肖宁等.按体积法设计沥青混合料.哈尔滨建筑大学学报.1995,4
[26] 袁迎捷等.沥青混合料压实机理新解.公路.2002,2
[27] 贾渝等.论我国沥青混合料设计方法.公路.2001,8
[28] 张宗涛等.间断密级配沥青混合料配合比设计方法.西安公路交通大学学报.2001,10
[29] 刘红等.新型级配图的分析与验证.同济大学学报.2003,3
[30] 李一鸣等.沥青路面车辙形成机理力学分析.东南大学学报.1994,1
[31] 沈金安.关于沥青混合料的均匀性和离析问题.公路交通科技.2001,12
[32] 余叔藩.沥青混合料设计中沥青用量的确定.公路.2002,6
[33] 孙立军等.沥青路面结构行为理论.上海:同济大学出版社.2003,4
[34] 黄晓明等.沥青稳定基层路面结构综述.河南交通科技,1999,6
[35] 郝培文等.不同沥青用量与沥青组成对沥青混合料抗车辙性能的影响.西安公路交通大学学报,1998,(7)