Performance of modified self-healing concrete with calcium nitrate microencapsulation

Al‐Ansari, Mohammed S.; Abu-Taqa, Ala G.; Hassan, Marwa; Senouci, Ahmed

doi:10.1016/j.conbuildmat.2017.05.152

Cited by 55 publications

(23 citation statements)

References 31 publications

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“…In particular, the fraction and size of microcapsules can be seen to have a pronounced effect not only on mechanical properties but also on pore structure and permeability (Table ). However, most researchers seem to identify a critical content below the effect of which is negligible or acceptable …”

Section: Encapsulated Autonomous Self‐healing (Polymers or Minerals)mentioning

confidence: 99%

A Review of Self‐Healing Concrete for Damage Management of Structures

Belie

Gruyaert

Al‐Tabbaa

et al. 2018

Adv Materials Inter

489

278

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The increasing concern for safety and sustainability of structures is calling for the development of smart self-healing materials and preventive repair methods. The appearance of small cracks (<300 µm in width) in concrete is almost unavoidable, not necessarily causing a risk of collapse for the structure, but surely impairing its functionality, accelerating its degradation, and diminishing its service life and sustainability. This review provides the state-ofthe-art of recent developments of self-healing concrete, covering autogenous or intrinsic healing of traditional concrete followed by stimulated autogenous healing via use of mineral additives, crystalline admixtures or (superabsorbent) polymers, and subsequently autonomous self-healing mechanisms, i.e. via, application of micro-, macro-, or vascular encapsulated polymers, minerals, or bacteria. The (stimulated) autogenous mechanisms are generally limited to healing crack widths of about 100-150 µm. In contrast, most autonomous self-healing mechanisms can heal cracks of 300 µm, even sometimes up to more than 1 mm, and usually act faster. After explaining the basic concept for each self-healing technique, the most recent advances are collected, explaining the progress and current limitations, to provide insights toward the future developments. This review addresses the research needs required to remove hindrances that limit market penetration of self-healing concrete technologies.

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Section: Encapsulated Autonomous Self‐healing (Polymers or Minerals)mentioning

confidence: 99%

A Review of Self‐Healing Concrete for Damage Management of Structures

Belie

Gruyaert

Al‐Tabbaa

et al. 2018

Adv Materials Inter

489

278

View full text Add to dashboard Cite

show abstract

“…Using complex coacervation, spherical polymeric microcapsules in the range of 300-700 μm, with switchable mechanical properties have been developed, while the use of microfluidic devices allowed the development of acrylic microcapsules with adjustable shell properties. References (Yang et al 2009(Yang et al , 2011Ge et al 2011;Dong et al 2012Dong et al , 2016Dong et al , 2017Li et al 2013Li et al , 2016aLi et al , 2016bLi et al , 2017Li et al , 2020aWang et al 2013Wang et al , 2015Wang et al , 2017bWang et al , 2018Wang et al , 2019aWang et al , 2020Song et al 2013;Gilford et al 2014;Litina et al 2014;Perez et al 2015aPerez et al , 2015bMostavi et al 2015;Zhou et al 2015;Giannaros et al 2016;Tan et al 2016;Lv et al 2016aLv et al , 2016bLv et al , 2020bVan Stappen et al 2016;Arce et al 2017;Al-Ansari et al 2017Kim et al 2017;Milla et al 2017;De Nardi et al 2017;García Calvo et al 2017;Souza and Al-Tabbaa 2018;Kim et al 2018;Liu et al 2018;…”

Section: Protective Shellmentioning

confidence: 99%

Critical Aspects in the Development and Integration of Encapsulated Healing Agents in Cement and Concrete

Papaioannou

Amenta

Kilikoglou

et al. 2021

ACT

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“…The working assumption argued for the leaching out of such hydration yields and renewed crystallization in flow water via fractures. In line with this, a range of repair agents, including expansive agents, geo-materials, and chemical mixtures together with their blends were used to assess the performance of concrete in terms of its ability to repair itself [ 44 , 45 , 46 ]. In addition, comparative analysis was undertaken between the reference specimen and the specimen with 10% cement content replaced with expansive materials consisting of C 4 A 3 S, CaSO 4 , and CaO.…”

Section: Mechanism Of Self-healing In Cementitious Materialsmentioning

confidence: 99%

Biomimetic Self-Healing Cementitious Construction Materials for Smart Buildings

Shah

Huseien

2020

Biomimetics

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Climate change is anticipated to have a major impact on concrete structures through increasing rates of deterioration as well the impacts of extreme weather events. The deterioration can affect directly or indirectly climate change in addition to the variation in the carbon dioxide concentration, temperature and relative humidity. The deterioration that occurs from the very beginning of the service not only reduces the lifespan of the concretes but also demands more cement to maintain the durability. Meanwhile, the repair process of damaged parts is highly labor intensive and expensive. Thus, the self-healing of such damages is essential for the environmental safety and energy cost saving. The design and production of the self-healing as well as sustainable concretes are intensely researched within the construction industries. Based on these factors, this article provides the materials and methods required for a comprehensive assessment of self-healing concretes. Past developments, recent trends, environmental impacts, sustainability, merits and demerits of several methods for the production of self-healing concrete are discussed and analyzed.

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Performance of modified self-healing concrete with calcium nitrate microencapsulation

Cited by 55 publications

References 31 publications

A Review of Self‐Healing Concrete for Damage Management of Structures

A Review of Self‐Healing Concrete for Damage Management of Structures

Critical Aspects in the Development and Integration of Encapsulated Healing Agents in Cement and Concrete

Biomimetic Self-Healing Cementitious Construction Materials for Smart Buildings

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