Self-healing efficiency of cementitious materials containing tubular capsules filled with healing agent

Tittelboom, Kim Van; Belie, Nele De; Loo, Denis Van; Jacobs, Patric

doi:10.1016/j.cemconcomp.2011.01.004

Cited by 342 publications

(239 citation statements)

References 15 publications

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“…Also, this technique is not repeatable since the glass tubes would most likely be emptied during the first loading cycle. It has been shown that self-healing using this approach leads to recovery of both transport and mechanical properties, however, it is not 100% efficient and the healing under repeated damage was minimal Joseph et al 2010;Van Tittelboom et al 2011).…”

Section: Self-healing Robustness Of Various Approachesmentioning

confidence: 99%

“…Indeed the glass tubing approach may be considered a variant of chemical encapsulation as an alternative form of healing agent delivery approach, with the advantage of potentially carrying a larger amount of healing agent compared with microcapsules. Various chemicals including methyl methacrylate (Dry and McMillan 1996), ethyl cyanoacrylate Joseph et al 2010) and polyurethane combined with an accelerator (van Tittelboom et al 2011) have demonstrated the ability of recovering concrete mechanical and transport properties. These chemicals are chosen to have low viscosity so that the healing agents can leak from the fractured glass tube into the concrete crack to perform the self-healing.…”

Section: Self-healing Approachesmentioning

confidence: 99%

“…As noted above, the healing agent is not limited to chemicals, but could be biological (Wang et al 2012). Evidence of self-healing was based on mechanical reloading of beam elements that show a rebound of stiffness and/or strength Joseph et al 2010;Van Tittelboom et al 2011) and a reduction of permeability coefficient (Van Tittelboom et al 2011).…”

Section: Self-healing Approachesmentioning

confidence: 99%

“…In the first type of approaches encapsulated sealants or adhesives are used (Dry 200). The adhesives can be stored in short fibres , Qian et al 2009, van Tittelboom et al 2011 or in longer tubes (Nishiwaki et al 2006, Joseph 2008, Joseph et al 2008. Another approach is incorporating an expansive component in the concrete which starts to expand and fill voids and cracks when triggered by carbonation or moisture ingress (Hosoda et al 2007, Sisomphon et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Advances in Self-healing Cementitious Materials

2012

ACT

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PrefaceThis special issue is aiming at summarizing recent progress in self-healing cementitious materials and at motivating further development in the relevant research. It took a long time since the efforts to develop self-healing materials working as intelligent materials drew strong attention worldwide in the research communities. Research and development of self-healing performance have been progressing on varieties of materials including metals, non-metals, inorganic and organic materials, and composite materials. Particularly for cement-based materials, based on the background of epoch-making ideas and existing research results, it has become possible to introduce some self-healing functions and their combined mechanisms. These self-healing cementitious materials have potentials to renovate existing structural designs and maintaining schemes and contribute to service life extension and environmental impact reduction. We expect this special issue could support to realize the potential.This special issue was worked out under a strong support of JCI Technical Committee on Self-healing / Repairing Technology in Cement-based Materials (JCI TC-091) chaired by Prof. S. Igarashi, Kanazawa University. This committee's activities included 1) quantitative evaluation of self-healing performance such as water leakage control and loading damage recovery, 2) investigation into self-healing mechanism, and 3) application of non-destructive test to identify self-healing results. Committee members of the TC are listed below.Koichi Maekawa, Editor-in-Chief of ACT TC-091 committee members AbstractReinforced concrete (RC) structures in marine environments are generally affected by harsh marine environmental actions, resulting in early performance degradation mainly due to chloride-induced deterioration. In such conditions, corrosion of rebar progresses rapidly, and also the cross-sectional area of rebar is reduced and consequently structural performance of RC structures will be degraded. In contrast, the surface of concrete structures is often covered with many marine sessile organisms under marine tidal and submerged conditions. These marine sessile organisms have been empirically known to enhance the durability of concrete though the effectiveness is not appropriately evaluated. This paper describes the long-term resistance of concrete with marine sessile organisms to chloride ion penetration in concrete. The effect and its sustainability of marine sessile organisms on chloride ion penetration in concrete were investigated through field exposure tests and laboratory tests. From the test results, the basal membrane, which is a matrix of marine sessile organisms, adheres to concrete strongly on a long-term basis though some gaps between concrete and the basal membrane can be observed. In addition, experimental results and simplified simulation clarified that the attachment of marine sessile organisms can enhance the long-term resistance of concrete to chloride ion penetration.

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Section: Self-healing Robustness Of Various Approachesmentioning

confidence: 99%

Section: Self-healing Approachesmentioning

confidence: 99%

Section: Self-healing Approachesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Advances in Self-healing Cementitious Materials

2012

ACT

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“…[1][2][3][4][5][6][7][8][9][10]. The working principle of this autonomic healing strategy depends upon an adequate release of the capsule content whenever the matrix is internally damaged.…”

Section: Introductionmentioning

confidence: 99%

Determination of strength and debonding energy of a glass-concrete interface for encapsulation-based self-healing concrete

Gilabert

Tittelboom

Tsangouri

et al. 2017

Cement and Concrete Composites

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This paper presents a combined experimental-numerical analysis to assess the strength and fracture toughness of a glass-concrete interface. This interface is present in encapsulation-based self-healing concrete. There is absence of published results of these two properties, despite their important role in the correct working of this self-healing strategy. Two setups are used: uniaxial tensile tests to assess the bonding strength and four point bending tests to get the interfacial energy. The complementary numerical models for each setup are conducted using the finite element method. Two approaches are used: cohesive zone model to study the interface strength and the virtual crack closure technique to analyze the interfacial toughness. The models are validated and used to verify the experimental interpretations. It is found that a glass-concrete interface can develop a maximum strength of approximately 1 N/mm 2 with fracture energy of 0.011 J/m 2 .

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Advanced Materials for Use in Soft Self‐Healing Devices

2017

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Devices integrated with self-healing ability can benefit from long-term use as well as enhanced reliability, maintenance and durability. This progress report reviews the developments in the field of self-healing polymers/composites and wearable devices thereof. One part of the progress report presents and discusses several aspects of the self-healing materials chemistry (from non-covalent to reversible covalent-based mechanisms), as well as the required main approaches used for functionalizing the composites to enhance their electrical conductivity, magnetic, dielectric, electroactive and/or photoactive properties. The second and complementary part of the progress report links the self-healing materials with partially or fully self-healing device technologies, including wearable sensors, supercapacitors, solar cells and fabrics. Some of the strong and weak points in the development of each self-healing device are clearly highlighted and criticized, respectively. Several ideas regarding further improvement of soft self-healing devices are proposed.

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Self-healing efficiency of cementitious materials containing tubular capsules filled with healing agent

Cited by 342 publications

References 15 publications

Advances in Self-healing Cementitious Materials

Advances in Self-healing Cementitious Materials

Determination of strength and debonding energy of a glass-concrete interface for encapsulation-based self-healing concrete

Advanced Materials for Use in Soft Self‐Healing Devices

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