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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第10卷    第6期    总第56期    2013年12月

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文章编号:1672-7029( 2013) 06-0040-05
板式轨道用高弹模水泥沥青砂浆与混凝土黏结性能的试验研究
元强12,郭建光3,邓德华12,谢友均12,王世雄1,曾志平12

(1.中南大学土木工程学院,湖南长沙410075;
2.高速铁路建造技术国家工程实验室,湖南长沙410075;
3.沪昆铁路客运专线江西公司,江西南昌330000
)

摘 要: 采用一种直接拉伸法试验研究了水泥乳化沥青砂浆与支承层混凝土( C15) 、底座板混凝土( C30) 和轨道板蒸养混凝土( C55) 的黏结强度及其影响因素。试验结果表明: 砂浆配合比( 用水量) 对砂浆与轨道板蒸养混凝土、底座板混凝土及支承层混凝土的黏结强度影响很小; 混凝土表面拉毛显著提高了黏结强度; 板腔的润湿状态对砂浆充填层与混凝土的黏结力影响很大; 黏结强度随龄期增加而增加,在7 d 龄期时已基本达到最大值。

 

关键字: 水泥沥青砂浆; CRTS II 型板式轨道结构; 黏结强度; 混凝土

Experimental study on the bonding strength between high modulus cement emulsified asphalt for slab track and concrete
YUAN Qiang12,GUO Jianguang3,DENG Dehua12,XIE Youjun12,WANG Shixiong1,ZENG Zhiping12

1.School of Civil Engineering,Central South Unviersity,Changsha 410075,China;
2.National Engineering Laboratory for Construction of High Speed Railway,Changsha 410075,China;
3.Hu-Kun Railway PDL Jiangxi Co.Ltd.,Nanchang 330000,China

Abstract:The bonding strength between CA mortar and different strength grades of concrete in different positions ( C15 in supporting layer,C30 in base plate,and C55 steamed in track slab) and their affecting factors were studied by using direct tensile tests.The results show that mix proportion of CA mortar( water content) has minor effect on the bonding strength in above locations.Rough handling significantly increases bonding strength,and the wetness of the concrete chamber dramatically affects the bonding strength of filling layers and concrete.Meanwhile,bonding strength increases with the age,and reaches its maximum value at the age of 7 d.

 

Key words: CA mortar; CRTS II slab ballastless track; bonding strength; concrete

ISSN 1672-7029
CN 43-1423/U

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