Use of Surface Treatment Materials to Improve Concrete Durability

International Journal of Modelling Identification and Control, 2009

Construction and Building Materials, 2013

Restoration of Buildings and Monuments, 2008

Revista ALCONPAT, 2020

This study aims to evaluate the use of silicon base (NS) and functionalized (NF) nanoparticles as emerging preventive surface treatment (ST) in reinforced concrete specimens. The specimens were fabricated with a water/cement (w/c) of 0.65 and subjected to a previous aging period through exposure to CO2. Subsequently, two different variants of the treatment were applied by spraying (using a 0.1% dispersion of nanoparticles in water) and then re-applied to carbonation. The carbonation depth and contact angle results indicate that there is an influence between the degree of aging and the efficiency of each treatment.

2012

2012

Concrete is a porous material. The size and distribution of pores in concrete varies, depending upon the quality of compaction, the materials, the water-to-cement ratio and the degree of hydration. Many of these pores are inter-connected creating larger and more complex pore systems. Water can penetrate this network and cause deterioration of the concrete structure. Silanes have been generally used in the past to help protect reinforced concrete exposed to an aggressive environment. The treatment works as a pore liner, thus ...

Construction and Building Materials, 1995

2017

Chloride and sulfate ions damage the reinforced concrete in marine environment due to the corrosion and formation of expansive products, respectively. Interaction of chloride-sulfate ions on concrete deterioration is very complicated. Little research has been conducted in this respect. In this study, the effect of chloride ions on sulfate attack and effect of sulfate ions on chloride attack were reviewed. According to the results, contradictory reports were observed in studies. However, most of the researchers believed that chloride ions mitigate the sulfate attack in combined chloride- sulfate solutions. On the other hand, regarding the influence of sulfate ions on chloride attack, some of the researchers reported the mitigating effect, but others referred to the accelerating effect. Tricalcium aluminate (C3A) content, water to cement ratio (w/c), duration of submerging, corrosive ions concentrations, cation type,type of pozzolan and its replacement are important parameters that could affect the concrete performance against combined chloride-sulfate solution.

Cement and Concrete Composites, 2012