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

页数：9

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