Stainless and Galvanized Steel, Hydrophobic Admixture and Flexible Polymer-Cement Coating Compared in Increasing Durability of Reinforced Concrete Structures

International Conference on Materials, Alloys and Experimental Mechanics 2017

材料科学;金属学;机械制造

Tittarelli, Francesca^1 ; Giosue, Chiara^1 ; Mobili, Alessandra^1

Department of Materials and Environment Engineering and Physics (SIMAU), Universita Politecnica Delle Marche (UNIVPM), UdR INSTM, Via Brecce Bianche, Ancona

60131, Italy^1

关键词: Concrete specimens;    Cracked reinforced concrete;    Cracked specimens;    Flexible polymers;    Galvanized steels;    Hydrophobic;    Hydrophobic admixtures;    Reinforcement corrosion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/225/1/012109/pdf
DOI  :  10.1088/1757-899X/225/1/012109

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The use of stainless or galvanized steel reinforcements, a hydrophobic admixture or a flexible polymer-cement coating were compared as methods to improve the corrosion resistance of sound or cracked reinforced concrete specimens exposed to chloride rich solutions. The results show that in full immersion condition, negligible corrosion rates were detected in all cracked specimens, except those treated with the flexible polymer-cement mortar as preventive method against corrosion and the hydrophobic concrete specimens. High corrosion rates were measured in all cracked specimens exposed to wet-dry cycles, except for those reinforced with stainless steel, those treated with the flexible polymer-cement coating as restorative method against reinforcement corrosion and for hydrophobic concrete specimens reinforced with galvanized steel reinforcements.