2007
DOI: 10.1617/s11527-006-9218-5
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Efficacy of surface hydrophobic agents in reducing water and chloride ion penetration in concrete

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Cited by 148 publications
(78 citation statements)
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“…Hydrophobic treatments have therefore been used in various forms in the construction industry to help prevent water and chloride ingress and their benefits are well documented [4][5][6][7][8][9]. They can be divided into three categories: coatings, pore blockers and pore liners ( Figure 1).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Hydrophobic treatments have therefore been used in various forms in the construction industry to help prevent water and chloride ingress and their benefits are well documented [4][5][6][7][8][9]. They can be divided into three categories: coatings, pore blockers and pore liners ( Figure 1).…”
Section: Introductionmentioning
confidence: 99%
“…The organic alkylic (CH 3 ) group remaining will protrude from the pore structure and are responsible for the hydrophobic characteristics [5][6]. Evidence from numerous studies demonstrate that the application of silanes significantly reduces water uptake, which as a result reduces the ingress of chlorides and hence also reduces the corrosion risk to the reinforcement [6,9,[12][13][14][15][16][17][18]. However, their performance is affected by surface imperfections, cyclic wetting and drying, skill of the applicator, surface preparation, application rates and local environmental conditions at the time of application.…”
Section: Introductionmentioning
confidence: 99%
“…No caso do tratamento de silicatos, o produto apresentou ótima capacidade de redução da absorção por capilaridade, porém resultou no pior resultado no ensaio de migração de cloretos. Apesar de os resultados estarem conflitantes com o observado em outros trabalhos como Medeiros e Helene [1] e Medeiros [5], no qual os autores verificaram valores de carga passante menores do que os concretos de referência, os resultados obtidos nesta pesquisa estão de acordo com o apresentado por Raisdorfer et al [21] que utilizaram o mesmo produto comercial. Provavelmente a película superficial formada pela camada de silicato possa estar retendo o sódio e decompondo a molécula de água, deixando passar o íon hidroxila através do material, o que explicaria o aumento da carga passante.…”
Section: Penetração De Cloretosunclassified
“…Alguns outros trabalhos nesta linha foram desenvolvidos e publicados por estes autores previamente [1,2], porém, a novidade da presente pesquisa é o emprego da determinação do ângulo de contato com a água e a inclusão do epóxi como alternativa de sistema de proteção de superfície.…”
Section: Introductionunclassified
“…This is achieved by means of waterproof (or moisture-proof) materials, e.g., continuous-sheet waterproofing, waterproof concrete, injections, surface penetration and impregnation, surface hydrophobisation, [3][4][5] etc. It is also possible to prevent water or moisture penetration using active methods for reducing the moisture stress on a construction, e.g., electokinetic methods.…”
Section: Introductionmentioning
confidence: 99%