Hydrophobic treatment of concrete

Vries, Jan de; Polder, R.B.

doi:10.1016/s0950-0618(97)00046-9

Cited by 152 publications

(73 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%

“…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%

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Long-term performance of surface impregnation of reinforced concrete structures with silane

Christodoulou¹,

Goodier

Austin

et al. 2013

Construction and Building Materials

111

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Long-term performance of surface impregnation of reinforced concrete structures with silane

Christodoulou¹,

Goodier

Austin

et al. 2013

Construction and Building Materials

111

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“…Their presence represents the risk of the formation of white efflorescence and even the degradation of the treated material due to the crystallisation pressure. The advantages of siliconates are their good water solubility (i.e., the possibility of application onto wet surfaces) and substantially lower prices in com- 8,9 . Table 1 contains an overview of the tested hydrophobic agents.…”

Section: Hydrophobic Agentsmentioning

confidence: 99%

Ceramic masonry units intended for the masonry resistant to high humidity

Zach¹,

Novák²,

...³

2015

Mater. Tehnol.

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The Faculty of Civil Engineering has been developing modern masonry blocks for several years. The aim is to develop masonry units that provide a good thermal insulation, mechanical and acoustic properties and a reduction in the energy consumption required for their production. Given the ever increasing frequency of natural disasters, which also affect landlocked countries, a part of this research also focuses on the development of ceramic blocks resistant to high humidity. High humidity is one of the most harmful effects occurring in a building construction. It causes an overall deterioration of the building construction and can lead to its degradation. Ceramic-brick constructions are already under stress due to a high humidity during the building period and also afterwards during their use. However, natural disasters such as floods, which have often occurred in the Czech Republic in recent years, cause the destruction of building constructions and their subsequent demolition. The paper deals with the possibility of a preventive use of hydrophobic ceramic masonry units intended for masonry plinths. This hydrophobisation serves as the prevention in the cases, in which the conventional waterproofing fails and also in the case of an extremely high humidity. Keywords: ceramic masonry blocks, high humidity, hydrophobic, waterproofing, capillary absorption Fakulteta za gradbeni{tvo`e ve~let razvija moderne gradbene elemente. Namen je razviti moderno gradbeno enoto, ki bo imela dobro toplotno izolacijo, mehanske in akusti~ne lastnosti ter zmanj{ano porabo energije za njeno proizvodnjo. Zaradi vedno ve~je pogostosti naravnih katastrof, ki vplivajo tudi na oto{ke dr`ave, je del razvoja usmerjen tudi v razvoj kerami~nih opek, odpornih proti visoki vlagi. Ta je med najbolj {kodljivimi vplivi na gradbeno konstrukcijo. Povzro~a splo{no poslab{anje zgradbe in lahko povzro~i celo njen razpad. Konstrukcije iz kerami~nih opek so izpostavljene veliki vlagi`e pri gradnji, kot tudi kasneje pri uporabi. Pri naravnih nesre~ah, kot so poplave, ki so bile zadnja leta pogoste v^e{ki Republiki, so bile vzrok za uni~enje gradbenih konstrukcij in posledi~no ru{enje le-teh.^lanek obravnava mo`nost preventivne uporabe hidrofobne kerami~ne opeke za podlago zgradbe. Ta hidrofobizacija se uporablja kot za{~ita v primeru, kjer navadna hidroizolacija odpove, in tudi v primerih ekstremno visoke vla`nosti.

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“…It is well recognized that the main components of the most commonly used hydrophobic agents are alkiltrialkoxisilane, alkilalkoxisiloxanes or a mixture of these two components [19][20][21][22]. Furthermore, alkiltrialkoxisilane-based hydrophobic agents is generally found to penetrate deeper in the concrete substrate than talkilalkoxisiloxane-based hydrophobic agents [20,22], but the former agents are more volatile than the latter ones [20].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, alkiltrialkoxisilane-based hydrophobic agents is generally found to penetrate deeper in the concrete substrate than talkilalkoxisiloxane-based hydrophobic agents [20,22], but the former agents are more volatile than the latter ones [20]. In addition, waterborne systems (micro-emulsion) [3,19,23] is increasingly becoming popular because of environmental protection. However, the exact components of hydrophobic agents have not yet been disclosed by any manufacturer due to commercial confidentiality, although it is well known that silanes are generally dissolved in alcohol or are applied to the concrete as 100% active substance and siloxanes are often dissolved in alcohol or hydrocarbon [19].…”

Section: Introductionmentioning

confidence: 99%