Aspects of bond layer role in concrete repairs

Błaszczyński, Tomasz; Jasiczak, Józef; Ksit, Barbara; Siewczyńska, Monika

doi:10.1016/s1644-9665(12)60277-5

Cited by 17 publications

(12 citation statements)

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“…It is also known from literature that the use of a bonding agent on the surface of the substrate before the application of the overlay improves the level of the bonding between the cement mortar overlay and the concrete substrate. [11][12][13] Sadowski et al [14] showed that with an increase of fractional pore shares and the number of pores within the interphase zone, the value of f b decreases, and that with an increase in fractional pore shares and the number of pores within the subsurface zone of the substrate the value of f b increases.…”

Section: Introductionmentioning

confidence: 99%

Functional and adhesive properties of cement-based overlays modified with amorphous silica nanospheres

Szymanowski

Sadowski

2019

The Journal of Adhesion

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In civil engineering, overlays should have appropriate strength and functional parameters. In order to obtain these parameters to the desired level, additional actions are applied in the form of dispersed reinforcement, surface hardening and impregnation. There is a lack of detailed results of studies on the impact of amorphous SiO 2 nanospheres contained in the cement mortar of the overlay in concrete floors on its bonding with the concrete substrate, as well as on its functional parameters. Considering the above, the article presents the results of research regarding the impact of amorphous SiO 2 nanospheres. It was also shown that the most favourable results (understood as lower abrasion resistance, higher subsurface tensile strength and a higher overlay hardness), when compared to the reference mortar, are achieved with the use of amorphous SiO 2 nanospheres in an amount of 0.5% in relation to the cement mass. This is confirmed by studies carried out using scanning electron microscopy, which confirmed that these improvements are due to the fact that the mortar with the addition of amorphous SiO 2 nanospheres in an amount of 0.5% of the cement mass is characterized by a lower ratio of pores within the range from 0.83 to 7.50 μm.

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Section: Introductionmentioning

confidence: 99%

Functional and adhesive properties of cement-based overlays modified with amorphous silica nanospheres

Szymanowski

Sadowski

2019

The Journal of Adhesion

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“…The research has also shown that using a bonding agent before laying the overlay on the concrete substrate surface improves the level of the pull-off adhesion fb of the overlay with the concrete substrate [58][59][60][61]. Figure 15 shows the relation between shear bond strength and the method of substrate surface treatment.…”

Section: Strengthening Of the Surface Of The Concrete Substrate With mentioning

confidence: 97%

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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“…The durability of concrete structures depends on the proper bond between the added concrete layer and the existing concrete substrate layer [1][2][3][4][5]. The measure of this bond is the value of pull-off adhesion f b.…”

Section: Introductionmentioning

confidence: 99%

Non-destructive identification of pull-off adhesion between concrete layers

Sadowski

2015

Automation in Construction

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Aspects of bond layer role in concrete repairs

Cited by 17 publications

References 0 publications

Functional and adhesive properties of cement-based overlays modified with amorphous silica nanospheres

Functional and adhesive properties of cement-based overlays modified with amorphous silica nanospheres

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

Non-destructive identification of pull-off adhesion between concrete layers

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