Fundamental Study on Development of Intelligent Concrete Characterized by Self-Healing Capability for Strength

Mihashi, Hirozo; Nishiwaki, Tomoya; Otsuka, Koji

doi:10.3151/crt1990.11.2_21

Cited by 60 publications

(66 citation statements)

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“…The adhesive is thereby intended to be released into the crack plane, cure, and thus heal the original crack through bonding of the crack faces. This concept has also been explored by other authors including Li et al (1998), Mihashi et al (2000) and more recently by Nishiwaki et al (2006).…”

Section: Introductionmentioning

confidence: 87%

“…extended potlife) is required. Mihashi et al (2000) examined the feasibility of separate storage of the two epoxy resin components, adjacent to one another within a cementitious matrix, although the authors concluded that insufficient mixing on release resulted in poor curing and therefore poor mechanical performance of the adhesive. Cyanoacrylates (superglue) are more suitable healing agents since they are single-agent adhesives with generally lower viscosities than epoxy resins, and are therefore able to flow into, and heal, finer cracks.…”

Section: Healing Agentmentioning

confidence: 99%

“…The three main autonomic healing agents which have been investigated in the literature to date are (a) epoxy resins (Mihashi et al, 2000) (b) cyanacrylates (Li et al, 1998) (c) alkali-silica solutions (Mihashi et al, 2000).…”

Section: Healing Agentmentioning

confidence: 99%

“…The two main forms of delivery system are (a) internal encapsulation of the adhesive in brittle capsules (Li et al, 1998) (b) external delivery of the adhesive through a brittle supply network (Mihashi et al, 2000).…”

Section: Delivery Systemmentioning

confidence: 99%

See 3 more Smart Citations

Experimental investigation of adhesive-based self-healing of cementitious materials

Joseph

Jefferson

Isaacs

et al. 2010

Magazine of Concrete Research

175

109

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This paper presents the results of a series of self-healing experiments conducted on reinforced mortar beams containing adhesive-filled glass reservoirs. An overview of the findings of the preliminary investigation stage of experiments is given in addition to the results of a parametric study which investigates the effect of the level of reinforcement and loading rate on the amount of self-healing. Results show that both primary and secondary healing occurs during the first and second loading cycles respectively. Qualitative results also show clear evidence of the occurrence of crack-healing following the first loading cycle and new crack formation during the second loading cycle. The long-term motivation for this work is to provide data suitable for the development of a numerical material model for the autonomic healing process in cementitious materials.

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Section: Introductionmentioning

confidence: 87%

Section: Healing Agentmentioning

confidence: 99%

Section: Healing Agentmentioning

confidence: 99%

Section: Delivery Systemmentioning

confidence: 99%

See 2 more Smart Citations

Experimental investigation of adhesive-based self-healing of cementitious materials

Joseph

Jefferson

Isaacs

et al. 2010

Magazine of Concrete Research

175

109

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“…Intelligent materials possess the following three functions (Fig. 15) (Science and Technology Agency 1989, Mihashi et al 2000, Mihashi et al 2002.…”

Section: Intelligent Materialsmentioning

confidence: 99%

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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Research Progress on Numerical Models for Self‐Healing Cementitious Materials

Jefferson

Javierre

Freeman

et al. 2018

Adv Materials Inter

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In this paper, research progress on numerical models for self‐healing cementitious materials (SHCMs) is discussed. Models developed specifically for SHCMs, as well as other relevant work, are considered. A summary of current self‐healing (SH) techniques is provided along with descriptions of the processes that govern their behavior. Models for mechanical self‐healing, transport processes in materials with embedded healing systems, fully coupled models, and other modeling techniques used to simulate SH behavior are discussed. The mechanics models discussed include those based on continuum–damage–healing mechanics (CDHM), micromechanics, as well as models that use discrete elements and particle methods. A considerable section is devoted to the simulation of carbonation in concrete since the essential mechanisms that govern this process are applicable to SH systems that employ calcite as a healing material. A number of transport models for simulating early‐age self‐healing are also considered. This highlights the fact that there are currently very few papers that describe fully coupled models, although a number of approaches that couple some aspects of transport and mechanical healing behavior are discussed. This article closes with a discussion that highlights the fact that many models are presented with limited or no experimental validation.

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Fundamental Study on Development of Intelligent Concrete Characterized by Self-Healing Capability for Strength

Cited by 60 publications

References 0 publications

Experimental investigation of adhesive-based self-healing of cementitious materials

Experimental investigation of adhesive-based self-healing of cementitious materials

Advances in Self-healing Cementitious Materials

Research Progress on Numerical Models for Self‐Healing Cementitious Materials

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