Ambient pressure carbonation curing of reinforced concrete for CO2 utilization and corrosion resistance

Reinforced concrete structures are subjected to deterioration due to many factors such as corrosion of reinforcing steel. Ultimate strengths of structural elements can be greatly affected by these deteriorating factors. There are numerous methods and techniques used to protect these structural elements. The mortar layer (Plastering) is considered the first defense line against all the deteriorating factors. The main goal of this research is to investigate to what extent the plastering layer can protect reinforced concrete beams against corrosion. The aim of the experimental program is to study the effect of plastering layer on corrosion resistance of reinforced concrete beams. Four reinforced concrete beams (1002001100 mms) and four Lollypop specimens (cylinders 100200 mms) were tested and described as follows: • A beam and a lollypop specimen without any plastering layer (control). • A beam and a lollypop specimen with traditional plastering layer (cement + sand + water). • A beam and a lollypop specimen with modified plastering (traditional plastering + waterproof admixtures). • A beam and a lollypop specimen with painted and modified plastering layer (traditional plastering + waterproof admixtures + external waterproof paint). These eight specimens were subjected to corrosion using accelerated corrosion technique, after that the four beams were tested in flexure under three point load arrangement while the four lollypops were used to calculate the total mass loss due to accelerated corrosion. The test results were used to figure out the effect of plastering layer on corrosion resistance of RC beams.

Download Full-text

Improving Sustainability through Corrosion Resistance of Reinforced Concrete by Using a Manufactured Blended Cement and Fly Ash

Sustainability ◽

10.3390/su10062004 ◽

2018 ◽

Vol 10 (6) ◽

pp. 2004 ◽

Cited By ~ 3

Author(s):

Hector Campos Silva ◽

Pedro Garces Terradillos ◽

Emilio Zornoza ◽

Jose Mendoza-Rangel ◽

Pedro Castro-Borges ◽

...

Keyword(s):

Corrosion Resistance ◽

Reinforced Concrete ◽

Fly Ash ◽

Blended Cement

Download Full-text

Chemical Deposition of Thin Layers on Reinforcing Steel

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.660.213 ◽

2015 ◽

Vol 660 ◽

pp. 213-218 ◽

Cited By ~ 2

Author(s):

Petru Lazăr ◽

Costică Bejinariu ◽

Andrei Victor Sandu ◽

Alin Marian Cazac ◽

Ioan Gabriel Sandu

Keyword(s):

Corrosion Resistance ◽

Reinforced Concrete ◽

Experimental Research ◽

Immersion Time ◽

Chemical Deposition ◽

Thin Layers ◽

Phosphate Solution ◽

Reinforcing Steel ◽

Good Surface

This paper presents the results of experimental research on the influence of using microcrystalline phosphating process on the OB37 steel used in construction. For this purpose, the samples were immersed in phosphate solution and the structures were characterized using SEM microscope. The results show that the obtained structures, are influenced by pH and immersion time and show a good surface compactity and roughness, which means that the obtained layer on the OB37 reinforcement improves corrosion resistance and adhesion of these reinforcements in the reinforced concrete.

Download Full-text