Experimental Study on Salt Freezing Damage of Cement Concrete by Chloride Deicing Agent. Issue 2 (April 2021)

• Record Type: Journal Article
• Authors: Chen, Xiaodong; Gao, Peiwei; liu, Jun
• Is Part Of: IOP conference series. Volume 719:Issue 2(2021)
• Publication Date: 2021-04
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/719/2/022070
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: In winter, a large number of chloride deicing agents are spread in northern China. The damage effect of chloride deicing agent on concrete has attracted great attention in the industry. It is of great significance to study the mechanism of salt freezing to improve the service life and safety of roads and bridges in cold regions. In this paper, using C30 and C50 concrete specimens commonly used in highway engineering, using water bath box, oven, cut-201 ultrasonic instrument and other instruments and equipment, on the basis of a large number of indoor tests, the mode and degree of concrete salt freezing damage under freeze-thaw cycle environment are studied in depth, including the influence of concrete quality loss rate, appearance, dynamic elastic modulus and strength The influence mode and degree of concrete salt frost damage are given, and the variation law of various performance parameters of concrete under salt freezing condition is analyzed, which provides the test basis for the proposal of relevant protection measures.