细粒式薄表层沥青混合料中粗集料的骨架特性
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摘要
为研究薄表层沥青混合料的骨架特性,同时为保证公称最大粒径9. 5 mm(UTL-10)矿料级配的稳定性,在4. 75 mm与9. 5 mm筛孔中间增设7. 5 mm筛孔,通过捣实密度试验分析了不同粗集料配比的集料骨架间隙率(VCA)。同时,提出了利用粗集料-沥青胶浆试件的单轴贯入试验来研究不同组合的粗集料抗剪强度相关参数,确定了薄表层粗集料的级配设计控制指标,最终给出了薄表层粗集料的推荐配比范围。结果表明:集料内摩阻角φ能够很好地反映粗集料级配的骨架强度稳定性;采用VCA和内摩阻角φ双重指标可以有效控制薄表层沥青混合料的粗集料配比设计;公称最大粒径为13. 2 mm(UTL-13)矿料级配三档集料含量的推荐范围分别为12. 5%～22. 2%,37. 5%～44. 4%,33. 3%～50%;UTL-10三档集料含量的推荐范围分别为10%～16. 7%,40%～50%,33. 3%～50%。
This work aimed to explore the skeleton characteristics of thin-layer asphalt mixture and to ensure the aggregate gradation stability of UTL-10.We introduced 7. 5 mm sieve between 4. 75 mm and 9. 5 mm sieves,and carried out the dry-rodded test so as to analyze the voids in coarse aggregates(VCA) under different coarse aggregate contents. Meanwhile,we conducted uniaxial penetration test upon the coarse aggregate-asphalt mortar specimens,and thus the parameters related to shear strength of different coarse aggregate proportions were obtained. Consequently the indexes for the proportion control of coarse aggregate in ultra-thin asphalt mixture were determined,and the recommended ranges of coarse aggregates content were presented as well. The results indicated that the internal friction angle φ of coarse aggregate can be used to reflect the skeleton strength stability of coarse aggregate gradation. Meanwhile,by the combination of VCA and internal friction angle φ,the coarse aggregate proportion design of ultra-thin asphalt mixture can be effectively controlled. The UTL-13 recommended contents of the three coarse aggregate are 12. 5% —22. 2%,37. 5% —44. 4% and 33. 3% —50%,respectively. And the UTL-10 recommended contents of the three coarse aggregate are 10% —16. 7%,40% —50% and 33. 3% —50% respectively.
This work aimed to explore the skeleton characteristics of thin-layer asphalt mixture and to ensure the aggregate gradation stability of UTL-10.We introduced 7. 5 mm sieve between 4. 75 mm and 9. 5 mm sieves,and carried out the dry-rodded test so as to analyze the voids in coarse aggregates(VCA) under different coarse aggregate contents. Meanwhile,we conducted uniaxial penetration test upon the coarse aggregate-asphalt mortar specimens,and thus the parameters related to shear strength of different coarse aggregate proportions were obtained. Consequently the indexes for the proportion control of coarse aggregate in ultra-thin asphalt mixture were determined,and the recommended ranges of coarse aggregates content were presented as well. The results indicated that the internal friction angle φ of coarse aggregate can be used to reflect the skeleton strength stability of coarse aggregate gradation. Meanwhile,by the combination of VCA and internal friction angle φ,the coarse aggregate proportion design of ultra-thin asphalt mixture can be effectively controlled. The UTL-13 recommended contents of the three coarse aggregate are 12. 5% —22. 2%,37. 5% —44. 4% and 33. 3% —50%,respectively. And the UTL-10 recommended contents of the three coarse aggregate are 10% —16. 7%,40% —50% and 33. 3% —50% respectively.
引文
1 Cao W D,Shen J R,Han H C.Petroleum Asphalt,2005,19(4),56(in Chinese).曹卫东,沈建荣,韩恒春.石油沥青,2005,19(4),56.
2 Highway Scientific Research Institute of Ministry of Communications.Technical study on ultra-thin asphalt concrete surface,China Communications Press,China,2004(in Chinese).交通部公路科学研究院.超薄层沥青混凝土面层技术研究.人民交通出版社,2004.
3 Sha Qinglin.Design and construction of SAC series of multi stone asphalt concrete.China Communications Press,China,2005(in Chinese).沙庆林.多碎石沥青混凝土SAC系列的设计与施工,人民交通出版社,2005.
4 He C M,Su W G.Highway,2007(11),85(in Chinese).何春木,苏卫国.公路,2007(11),85.
5 Li D P.Study on properties of ultra thin asphalt concrete surface.Master's Thesis,Southeast University,China,2007(in Chinese).李大鹏.超薄沥青混凝土面层性能研究.硕士学位论文,东南大学,2007.
6 Watson D E,Masad E,Moore K A,et al.In:83rd Annual Meeting of the Transportation Research Board.Washington D.C.,2004,pp.182.
7 Zhu S Y,Chen S F,Dou H B,et al.Materials Review B:Research Papers,2015,29(1),133(in Chinese).祝斯月,陈拴发,豆怀兵,等.材料导报:研究篇,2015,29(1),133.
8 Sun Y S,Xu D,Zhang W G.Materials Review B:Research Papers,2012,26(9),161(in Chinese).孙岩松,徐东,张文刚.材料导报:研究篇,2012,26(9),161.
9 Shi L W,Wang D Y,Wu W L.Journal of Building Materials,2016(4),767(in Chinese).石立万,王端宜,吴文亮.建筑材料学报,2016(4),767.
10 Shi L W,Wang D Y.China Journal of Highway and Transport,2014,27(8),23(in Chinese).石立万,王端宜.中国公路学报,2017,30(5),52.
11 Bi Y F,Sun L J.Journal of Tongji University(Natural Science),2005,33(8),1037(in Chinese).毕玉峰,孙立军.同济大学学报(自然科学版),2005,33(8),1037.
12 Li F P,Shen J A.Journal of Highway Transportation Res Development,2004,21(12),5(in Chinese).李福普,沈金安.公路交通科技,2004,21(12),5.
13 Zhang X N,Wang S H,Wu K H.Highway,2001(12),17(in Chinese).张肖宁,王绍怀,吴旷怀,等.公路,2001(12),17.
14 Sha Q L.Highway,2005(1),144(in Chinese).沙庆林.公路,2005(1),144.
15 Zhao Y L.Composition mechanism of asphalt mixtures.Ph.D.Thesis,Southeast University,China,2005(in Chinese).赵永利.沥青混合料的结构组成机理研究.博士学位论文,东南大学,2005.
16 Liu H Y.Technology of Highway and Transport,2004(3),25(in Chinese).刘红瑛.公路交通技术,2004(3),25.
17 Gao Z W,Li H,Lei J.Science Technology and Engineering,2014(14),26(in Chinese).高志伟,李浩,雷剑.科学技术与工程,2014(14),26.
2 Highway Scientific Research Institute of Ministry of Communications.Technical study on ultra-thin asphalt concrete surface,China Communications Press,China,2004(in Chinese).交通部公路科学研究院.超薄层沥青混凝土面层技术研究.人民交通出版社,2004.
3 Sha Qinglin.Design and construction of SAC series of multi stone asphalt concrete.China Communications Press,China,2005(in Chinese).沙庆林.多碎石沥青混凝土SAC系列的设计与施工,人民交通出版社,2005.
4 He C M,Su W G.Highway,2007(11),85(in Chinese).何春木,苏卫国.公路,2007(11),85.
5 Li D P.Study on properties of ultra thin asphalt concrete surface.Master's Thesis,Southeast University,China,2007(in Chinese).李大鹏.超薄沥青混凝土面层性能研究.硕士学位论文,东南大学,2007.
6 Watson D E,Masad E,Moore K A,et al.In:83rd Annual Meeting of the Transportation Research Board.Washington D.C.,2004,pp.182.
7 Zhu S Y,Chen S F,Dou H B,et al.Materials Review B:Research Papers,2015,29(1),133(in Chinese).祝斯月,陈拴发,豆怀兵,等.材料导报:研究篇,2015,29(1),133.
8 Sun Y S,Xu D,Zhang W G.Materials Review B:Research Papers,2012,26(9),161(in Chinese).孙岩松,徐东,张文刚.材料导报:研究篇,2012,26(9),161.
9 Shi L W,Wang D Y,Wu W L.Journal of Building Materials,2016(4),767(in Chinese).石立万,王端宜,吴文亮.建筑材料学报,2016(4),767.
10 Shi L W,Wang D Y.China Journal of Highway and Transport,2014,27(8),23(in Chinese).石立万,王端宜.中国公路学报,2017,30(5),52.
11 Bi Y F,Sun L J.Journal of Tongji University(Natural Science),2005,33(8),1037(in Chinese).毕玉峰,孙立军.同济大学学报(自然科学版),2005,33(8),1037.
12 Li F P,Shen J A.Journal of Highway Transportation Res Development,2004,21(12),5(in Chinese).李福普,沈金安.公路交通科技,2004,21(12),5.
13 Zhang X N,Wang S H,Wu K H.Highway,2001(12),17(in Chinese).张肖宁,王绍怀,吴旷怀,等.公路,2001(12),17.
14 Sha Q L.Highway,2005(1),144(in Chinese).沙庆林.公路,2005(1),144.
15 Zhao Y L.Composition mechanism of asphalt mixtures.Ph.D.Thesis,Southeast University,China,2005(in Chinese).赵永利.沥青混合料的结构组成机理研究.博士学位论文,东南大学,2005.
16 Liu H Y.Technology of Highway and Transport,2004(3),25(in Chinese).刘红瑛.公路交通技术,2004(3),25.
17 Gao Z W,Li H,Lei J.Science Technology and Engineering,2014(14),26(in Chinese).高志伟,李浩,雷剑.科学技术与工程,2014(14),26.