Improvement of historic reinforced concrete/mortars by impregnation and electrochemical methods

Franzoni, Elisa; Varum, Humberto; Natali, Maria Elia; Bignozzi, Maria Chiara; Melo, José; Rocha, Luciana S.; Pereira, Eduarda

doi:10.1016/j.cemconcomp.2013.12.013

Cited by 45 publications

(22 citation statements)

References 15 publications

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“…Other authors base the evaluation of the water capillary resistance on the water uptake giving it as a weight gain percentage. Franzoni et al [163] have made reference to the Italian standard UNI 7699:2005 for assessing the effectiveness of impregnation and electrochemical methods as protective surface treatments, and the performance of ethyl silicate for surface protection of concrete [124]. The same authors have also evaluated the water capillary uptake of concrete specimens after treating the concrete surface with ethyl silicate [126] by immersing the treated concrete face, originally in surface-dry conditions, into a 3-5 mm layer of deionized water, and weighting at different times between 4 minutes and 24 hours.…”

Section: Moisture Controlmentioning

confidence: 99%

External treatments for the preventive repair of existing constructions: A review

Sánchez

Faria

Ferrara

et al. 2018

Construction and Building Materials

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In the present paper different external surface treatments published in the literature as preventive solutions for improving the performance of existing concrete constructions are presented and discussed. They are categorized as repair materials for concrete conservation, protection surface methods against moisture and aggressive agent penetration, injection techniques for crack sealing and preventive repair solutions with smart functionalities. In a final section, the most extended testing methods for evaluating the effectiveness of the different repair solutions are summarized depending on the property to be enhanced: moisture control and resistance against penetration of aggressive agents. The review shows that although several possibilities exist for the repair of the existing constructions, there is a lack of comparative analysis between the different methodologies. SARCOS COST Action stablishes as scientific objectives to carry out comparative studies including the most advanced solutions for the external repair of concrete, giving criteria for effectiveness assessment and defining robust and reliable methods for charactering the performance of the repaired structures.

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Section: Moisture Controlmentioning

confidence: 99%

External treatments for the preventive repair of existing constructions: A review

Sánchez

Faria

Ferrara

et al. 2018

Construction and Building Materials

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“…5. It was reported that the experimental corrosion test showed that corrosion risk classes of some mortar samples after such immersion treatment passed from a high level to a low one [83].…”

Section: Steel Corrosionmentioning

confidence: 99%

“…However, drawbacks of these composites are the high price and high temperature sensitivity [2]. 7) In order to increase the bond strength of the embedded plain steel bars in existing structures without any need for demolition and realkalization, the deep impregnation of cement-based mortars and concrete with a solution of ethyl silicate and with electrochemical treatments by means of a solution of sodium carbonate was investigated [83]. The set-up of electrochemical treatment was presented in Fig.…”

Section: Steel Corrosionmentioning

confidence: 99%

Recent durability studies on concrete structure

Tang

Yao

Andrade

2015

Cement and Concrete Research

448

121

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“…Impregnation of the surface of the overlay by different coatings (e.g., epoxy, acrylic, polyurethane, cementitious, polymer/clay nanocomposites) can increase its durability, as well as improve many functional parameters such as adhesive resistant, chemical resistance, chloride permeability, hardness, impermeability, abrasion resistance, heat resistance, shrinkage, etc. [120][121][122][123][124][125][126][127][128][129].…”

Section: Overview Of Recent Activities Used To Improve the Functionalmentioning

confidence: 99%

Evaluation of the Adhesion between Overlays and Substrates in Concrete Floors: Literature Survey, Recent Non-Destructive and Semi-Destructive Testing Methods, and Research Gaps

Szymanowski

2019

Buildings

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Non-destructive testing (NDT) and semi-destructive testing (SDT) have recently been more frequently used for the evaluation and condition assessment of concrete floors in various types of buildings. The subject of the article is to briefly introduce the reader to the problem of adhesion between overlays and substrates in concrete floors and to illustrate the current state of knowledge on the subject. The aim of this paper was to briefly describe the recently used non-destructive and semi-destructive testing methods and the parameters useful for characterizing the adhesion between overlays and substrates in concrete floors, as well as the methods useful to characterize the functional properties of the overlays. A recent literature survey, related to the adhesion between the overlays and substrates in concrete floors, is thus shown. Special emphasis was placed on the critical review of the current research results. Based on the analysis of the literature review, research gaps have been presented in order to highlight future research directions.

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Improvement of historic reinforced concrete/mortars by impregnation and electrochemical methods

Cited by 45 publications

References 15 publications

External treatments for the preventive repair of existing constructions: A review

External treatments for the preventive repair of existing constructions: A review

Recent durability studies on concrete structure

Evaluation of the Adhesion between Overlays and Substrates in Concrete Floors: Literature Survey, Recent Non-Destructive and Semi-Destructive Testing Methods, and Research Gaps

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