Comparison of rebar corrosion in normal water and water containing micro-nano bubbles

Alireza Matlabi¹ Mahin Ghannadi²

1) Master s student in Civil Engineering, Islamic Azad University, Sarab Branch, Iran
2) Assistant Professor, Department of Civil Engineering, Islamic Azad University, Sarab Branch, Iran

IOI Code : XHFC-KDFHK
Publication : 6th.International Conference & 7th.National Conference on Civil Engineering, Architecture, Art and Urban Design(7iccacs.ir)
Abstract :
    Rebar corrosion means oxidation of a material with air (usually humid air). Corrosion can also be described as the reaction of matter with oxygen in the presence of water. In this research, the wet environment of rebars used in building structures with two types of mirage city water and water containing micronanobubbles and their comparison with each other at different times is investigated. The reinforcement used in this research is ribbed steel of St37 type, which surface It is free from rust and has different diameters of 10, 14, 16, 18 and 20 with a length of 300 mm. In order to make a device for producing water containing micronanobubbles, a venturi tube with an inner diameter of 6 mm and a tube inlet with a diameter of 6 cm was used. In this device, air and weather are combined and can be seen in the exit part, which is in the form of a glass tube. After making the machine for producing micronanobubbles and cutting different rebars of the same size (30 cm), the samples were kept for four months from the first of February to the end of May in 15 days in two tanks of drinking water and water containing micronanobubbles. were placed The results of examining the electrical resistance of the samples show that the use of water containing micro-nanobubbles increases the electrical resistance and reduces the flow of current, resulting in more rusting of the rebars.

Keywords : rebar corrosion normal water water containing micro nano bubbles electrical resistance