Comparison of different approaches for self-healing concrete in a large-scale lab test

Tittelboom, Kim Van; Wang, Jianyun; Araújo, Maria Adelaide Pereira Gomes de; Snoeck, Didier; Gruyaert, Elke; Debbaut, Brenda; Derluyn, Hannelore; Cnudde, Veerle; Tsangouri, Eleni; Hemelrijck, Danny Van; Belie, Nele De

doi:10.1016/j.conbuildmat.2015.12.186

Cited by 182 publications

(139 citation statements)

References 19 publications

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“…In addition, engineered cementitious composite (ECC) with unique micro‐crack behavior and tight crack width control properties also shows great potential in crack self‐healing . Among all these available self‐healing concrete technologies, encapsulation‐based self‐healing concrete is considered as the most promising one, when simply taking the maximum sealed crack width and depth as self‐healing governing parameters, according to the comparison made by Muhammad et al Moreover, the healing process of encapsulation strategy is more flexible, with no need for additional water, less curing time, and repeatable seal‐healing actions comparing with other traditional approaches …”

Section: Introductionmentioning

confidence: 99%

“…There are various factors which influence the curing process of encapsulation‐based self‐healing concrete, including the composition of healing agents, the capsule materials, accelerators, ambient conditions, as well as crack patterns . Besides, experimental methods for self‐healing efficiency assessment also affect results . The aim of this review is to discuss different parameters which are relevant to the efficiency of encapsulation‐based self‐healing cementitious material, and propose valuable suggestions for the future investigation on this topic.…”

Section: Introductionmentioning

confidence: 99%

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A review study on encapsulation‐based self‐healing for cementitious materials

Xue

et al. 2018

Structural Concrete

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Inspired by the self-repair polymeric materials, most of healing agents in encapsulation-based self-healing concrete are FIGURE 1 Self-healing schematic concept for cementitious materials 10 : (a) crack forming; (b) healing agent releasing; (c) polymerization with catalysts FIGURE 2 Configuration of encapsulation-based self-healing concrete 61 : (a) crack breaking capsule; (b) healing agent filling; (c) healing agent curing XUE ET AL.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A review study on encapsulation‐based self‐healing for cementitious materials

Xue

et al. 2018

Structural Concrete

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“…with detailed discussions and comparisons provided in [18][19][20][21][22][23]. In these strategies, there are not enough results about the mechanical recovery regarding the bacteria healing method, although it has been proved to be very effective for controlling the long term mass transport e.g.…”

Section: Introductionmentioning

confidence: 99%

A softening-healing law for self-healing quasi-brittle materials: Analyzing with strong discontinuity embedded approach

Zhang

Zhuang

2018

Engineering Fracture Mechanics

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Quasi-brittle materials such as concrete suffer from cracks during their life cycle, requiring great cost for conventional maintenance or replacement. In the last decades, self-healing materials are developed which are capable of filling and healing the cracks and regaining part of the stiffness and strength automatically after getting damaged, bringing the possibility of maintenance-free materials and structures.In this paper, a time dependent softening-healing law for self-healing quasi-brittle materials is presented by introducing limited material parameters with clear physical background. Strong Discontinuity embedded Approach (SDA) is adopted for evaluating the reliability of the model. In the numerical studies, values of healing parameters are firstly obtained by back analysis of experimental results of self-healing beams. Then numerical models regarding concrete members and structures built with self-healing and non-healing materials are simulated and compared for showing the capability of the self-healing material.

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“…The glass capsules used to test large-scale self-healing concrete beams are typically made of borosilicate glass [33,34], therefore the same type of glass was chosen for the glass plates used in this work. Before use, the glass plates were degreased with acetone.…”

Section: Specimen Design and Preparationmentioning

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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Comparison of different approaches for self-healing concrete in a large-scale lab test

Cited by 182 publications

References 19 publications

A review study on encapsulation‐based self‐healing for cementitious materials

A review study on encapsulation‐based self‐healing for cementitious materials

A softening-healing law for self-healing quasi-brittle materials: Analyzing with strong discontinuity embedded approach

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

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