[1]高磊,倪富健,罗海龙,等.乳化沥青冷再生混合料的透水性与空隙特征[J].东南大学学报(自然科学版),2015,45(3):581-585.[doi:10.3969/j.issn.1001-0505.2015.03.029]
 Gao Lei,Ni Fujian,Luo Hailong,et al.Permeability and air voids of cold recycled mixtures with asphalt emulsion[J].Journal of Southeast University (Natural Science Edition),2015,45(3):581-585.[doi:10.3969/j.issn.1001-0505.2015.03.029]
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乳化沥青冷再生混合料的透水性与空隙特征()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第3期
页码:
581-585
栏目:
交通运输工程
出版日期:
2015-05-20

文章信息/Info

Title:
Permeability and air voids of cold recycled mixtures with asphalt emulsion
作者:
高磊倪富健罗海龙杨美坤
东南大学交通学院, 南京 210096
Author(s):
Gao Lei Ni Fujian Luo Hailong Yang Meikun
School of Transportation, Southeast University, Nanjing 210096, China
关键词:
冷再生混合料 渗透系数 CT扫描 空隙特征
Keywords:
cold recycled mixtures hydraulic conductivity computed tomography scanning air voids
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2015.03.029
摘要:
为了研究乳化沥青冷再生混合料的透水性与空隙特征之间关系,通过测定渗透系数来评价其透水性,并利用工业CT扫描观测其内部细观空隙结构.根据乳化沥青冷再生混合料养生过程中空隙率的变化,探究水泥和水对其空隙形成的影响.结果发现,乳化沥青冷再生混合料在较高的空隙率下具有相对较低的透水性;其平均空隙尺寸略小于同级配的热拌沥青混合料,且大空隙较少,小空隙较多;乳化沥青冷再生混合料的空隙由压实空隙和养生空隙构成,水分的蒸发和水泥用量对养生空隙的形成具有显著的影响,随着水分的蒸发和水泥的水化,乳化沥青冷再生混合料内部形成了许多养生空隙;乳化沥青冷再生混合料的空隙尺寸以及分布特征是造成其低透水性的重要因素.
Abstract:
The relationship between the permeability and air voids of cold recycled mixtures with asphalt emulsion was studied. The hydraulic conductivity was used to evaluate the permeability and the CT(computed tomography)scanning was applied to find the characteristics of air voids. The effects of Portland cement and water were evaluated according to the change of air void content. The results show that the cold recycled mixture has a relatively low permeability under a relatively high air void content. The average air void size of cold recycled mixture is a little smaller than that of hot mix asphalt mixture, with less air voids in large size and more air voids in small size. The air voids of cold recycled mixture are developed during compaction and curing time. In the process of curing, the evaporation of water and hydration of cement affect the air void content significantly leading to the formation of more air voids. The size and distribution of air voids are important factors that contribute to the relatively low permeability of cold recycled mixture.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-10-18.
作者简介: 高磊(1988—),男,博士生;倪富健(联系人),男,博士,教授,博士生导师,nifujian@gmail.com.
基金项目: 国家自然科学基金资助项目(51178113)、江苏省普通高校研究生科研创新计划资助项目(CXZZ13_0113)、东南大学优秀博士学位论文培育基金资助项目.
引用本文: 高磊,倪富健,罗海龙,等.乳化沥青冷再生混合料的透水性与空隙特征[J].东南大学学报:自然科学版,2015,45(3):581-585. [doi:10.3969/j.issn.1001-0505.2015.03.029]
更新日期/Last Update: 2015-05-20