Effects of Parameters of Air-Avid Structure on the Salt-Frost Durability of Hardened Concrete

被引：17
|
作者：
Zhang, Hui [1 ,2 ]
Gao, Peiwei [1 ]
Zhang, Zhixiang [2 ]
Pan, Youqiang [2 ]
Zhang, Weiguang [3 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Civilaviat, Nanjing 210016, Peoples R China
[2] Jiangsu SinoRd Engn Res Inst, Nanjing 211806, Peoples R China
[3] Southeast Univ, Sch Transportat, Nanjing 211189, Peoples R China
来源：
APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 02期
关键词：
air-content; air-void structure; air-void spacing factor; salt-frost scaling;
D O I：
10.3390/app10020632
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Through laboratory testing, this research studied the connection between air-void structures of hardened concrete and fresh concrete and discussed the effects of the air-void structure on the salt-frost durability of the concrete. The results demonstrate that, in comparison with fresh concrete, the air-void spacing factor shows a close correlation with hardened concrete air-content and decreases in the form of a power function as the air-content increases. When the fresh concrete air-content is more than 6% and the hardened concrete air-void spacing factor is less than 0.18 mm, the influence of parameters of air-void structure on the salt-frost resistance of the concrete reduces. The air-void spacing factor more significantly affects the salt-frost resistance of the concrete compared with air content and the correlation reaches 0.93. Therefore, air-content and air-void spacing factor are recommended for dual control.
引用
收藏
页数：9
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