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Journal articles on the topic 'Construction of healing'

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Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Mors, Renée, and Henk M. Jonkers. "Bacteria-based self-healing concrete: evaluation of full scale demonstrator projects." RILEM Technical Letters 4 (April 8, 2020): 138–44. http://dx.doi.org/10.21809/rilemtechlett.2019.93.

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Bacteria-based self-healing concrete is an innovative concrete that contains a self-healing agent that provides the material with enhanced autonomous crack-sealing performance. A specific type of this concrete, based on a healing agent composed of bacterial spores and lactate as carbon source, has been developed and applied by the Delft University of Technology for over ten years. Under laboratory conditions it was proven that, depending on the dosage of healing agent, self-healing of cracks up to 0.8 mm widths occurs. As such the material potentially allows reduction of steel reinforcement used for crack width limitation in watertight constructions. Application of self-healing concrete would therefore not only result in a reduction of costs but also in improvement of environmental performance (lower CO2 footprint) and ease of in situ casting due to reduction of use of steel in waterproof applications. However, according to the EN 1990 Eurocode (Basis of structural design), customary application of a novel type of concrete must be preceded by full scale demonstrators proving evidence for safe and functional performance. In this contribution we portray full scale application of bacteria-based self-healing agent as developed by the Delft research group in two repair mortar- and in two concrete construction demonstrator projects. These demonstrator projects show that addition of the bacteria-based self-healing agent to the concrete mix is safe as no negative side effects on construction performance was observed. However, it also proved difficult to find evidence for increased crack-healing performance as cracking in the demonstrator constructions hardly occurred. In further full scale demonstrators we therefore plan to drastically reduce amount of crack width-restraining reinforcement to show crack-healing capacity and potential to save on use of reinforcement steel in watertight concrete constructions.

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2

Lesovik, Valery, Roman Fediuk, Mugahed Amran, Nikolai Vatin, and Roman Timokhin. "Self-Healing Construction Materials: The Geomimetic Approach." Sustainability 13, no. 16 (August 12, 2021): 9033. http://dx.doi.org/10.3390/su13169033.

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A person spends most of his life in rooms built from various building materials; therefore, the optimization of the human environment is an important and complex task that requires interdisciplinary approaches. Within the framework of the new theory of geomimetics in the building science of materials, the concepts of technogenic metasomatism, the affinity of microstructures, and the possibilities of creating composites that respond to operational loads and can self-heal defects have been created. The article aims to introduce the basic principles of the science of geomimetics in terms of the design and synthesis of building materials. The study’s novelty lies in the concept of technogenic metasomatism and the affinity of microstructures developed by the authors. Novel technologies have been proposed to produce a wide range of composite binders (including waterproof and frost-resistant gypsum binders) using novel forms of source materials with high free internal energy. The affinity microstructures for anisotropic materials have been formulated, which involves the design of multilayered composites and the repair of compounds at three levels (nano-, micro-, macro-). The proposed theory of technogenic metasomatism in the building science of materials represents an evolutionary stage for composites that are categorized by their adaptation to evolving circumstances in the operation of buildings and structures. Materials for three-dimensional additive technologies in construction are proposed, and examples of these can be found in nature. Different ways of applying our concept for the design of building materials in future works are proposed.

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Ã–zgen, Elif. "Evaluation on the change of healing perception at healthcare facilities the royal children's hospital." International Journal of Emerging Trends in Health Sciences 2, no. 1 (June 28, 2018): 07–13. http://dx.doi.org/10.18844/ijeths.v2i1.3423.

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Healthcare constructions are public buildings that necessitate technical, healing and medical conditions, require common action from a number of disciplines and accommodate differing scales within themselves. Recently, these constructions have been a field of study whose momentum have continued to speed up for varying disciplines in terms of healing factors. This condition can be evaluated in terms of the basic requirement of â€œwell-beingâ€ for each individual, the fact that the definition of health has become more comprehensive and the changes on spatial requirements in accord with developing technology. The definition by World Health Organization (WHO) will be distinctive for designers. WHO stated that â€œHealth is not only protection from diseases and microbes but also a state of well-being physically, mentally and socially.â€ Furthermore, excitement, hope and other positive emotions that can be conveyed to human soul through design can be viewed as the basis of health philosophy constructed on the condition of â€œwell-beingâ€ Even though the concept of health involves a comprehensive definition, its perception by users indicates change over time and it can be considered that this perception is far from a holistic approach in parallel with the definition of health. Healthcare constructions include places that have negative connotations in the conscious of the society. The design of modern healing places as livable spots, environments to where feelings of belonging can be attached and environments of relaxing and healing therapeutics has become a delayed requirement. This will only start with understanding the role of place on healing. Hospitals can be regarded as type of constructions that are convenient to healing reading. Therefore, the efforts to create theoretical background have been put forward in this study in order to evaluate the relation between healthcare constructions and perception of places to provide reading over hospitals. The study will mention hospital buildings in the historical process and changes on the healing perception of people. It is impossible to design the study independent of users in this healing reading from past to present. With the evaluation carried out in this respect, todayâ€™s spatial construction perception will be evaluated over The Royal Childrenâ€™s Hospital, Melbourne, Australia and providing recommendations on construction design is targeted. Keywords: Healing Places, Hospitals, Hospital design, Healing Design, Healthcare Constructions, Spatial Perception.

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4

Shah, Kwok Wei, and Ghasan Fahim Huseien. "Biomimetic Self-Healing Cementitious Construction Materials for Smart Buildings." Biomimetics 5, no. 4 (October 8, 2020): 47. http://dx.doi.org/10.3390/biomimetics5040047.

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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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5

Müller, Werner E. G., Emad Tolba, Shunfeng Wang, Qiang Li, Meik Neufurth, Maximilian Ackermann, Rafael Muñoz-Espí, Heinz C. Schröder, and Xiaohong Wang. "Transformation of Construction Cement to a Self-Healing Hybrid Binder." International Journal of Molecular Sciences 20, no. 12 (June 17, 2019): 2948. http://dx.doi.org/10.3390/ijms20122948.

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A new biomimetic strategy to im prove the self-healing properties of Portland cement is presented that is based on the application of the biogenic inorganic polymer polyphosphate (polyP), which is used as a cement admixture. The data show that synthetic linear polyp, with an average chain length of 40, as well as natural long-chain polyP isolated from soil bacteria, has the ability to support self-healing of this construction material. Furthermore, polyP, used as a water-soluble Na-salt, is subject to Na+/Ca2+ exchange by the Ca2+ from the cement, resulting in the formation of a water-rich coacervate when added to the cement surface, especially to the surface of bacteria-containing cement/concrete samples. The addition of polyP in low concentrations (<1% on weight basis for the solids) not only accelerated the hardening of cement/concrete but also the healing of microcracks present in the material. The results suggest that long-chain polyP is a promising additive that increases the self-healing capacity of cement by mimicking a bacteria-mediated natural mechanism.

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6

HARLEY, D. "Rhetoric and the Social Construction of Sickness and Healing." Social History of Medicine 12, no. 3 (December 1, 1999): 407–35. http://dx.doi.org/10.1093/shm/12.3.407.

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7

Young, Allan. "Narrative and the Cultural Construction of Illness and Healing." Journal of Nervous and Mental Disease 190, no. 2 (February 2002): 128–29. http://dx.doi.org/10.1097/00005053-200202000-00015.

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8

Hassan, Marwa Abdul Muhsien, Asaad M. Abbas, and Mohammed J. Mohammed Ali. "Construction of Scaffold from MgO Nanoparticle: Bone Fracture Healing." IOP Conference Series: Materials Science and Engineering 928 (November 19, 2020): 072133. http://dx.doi.org/10.1088/1757-899x/928/7/072133.

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9

Koch, Anne, and Stefan Binder. "Holistic Medicine between Religion and Science: A Secularist Construction of Spiritual Healing in Medical Literature." Journal of Religion in Europe 6, no. 1 (2013): 1–34. http://dx.doi.org/10.1163/18748929-89100001.

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A particular formation can be observed in the discourse of spiritual healing and complementary and alternative medicine (CAM). Explanations of the effectiveness of spiritual healing by medical doctors and psychologists sometimes include ideological and non-scientific conclusions and concepts, which are similar to but also different from New Age science on healing. With discourse analysis discursive nodes and strategies are identified in international medical and psychological research journals at the boundary of CAM, traditional medicine, and psychosomatics from the last decade. The article develops the category of secularism to describe these propositional formations and contributes to the larger debate of postsecular societies. Postsecularism not only puts public religion but also secularisms back on the agenda. This particular secularism in the field of spiritual healing is based on transfers of knowledge and practices between subareas of a functionally differentiated society: esoteric and scientific cultural models shift into medicine, and continue into the area of health care and healing. The article demonstrates how this secularism gathers around key concepts such as emergence, quantum physics, and physicalism, and is engaged in a permanent boundary work between conventional and alternative medicine, which is governed by the notion of holistic healing.

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10

Amiri, Mehrdad, Javad Majrouhi Sardroud, and Ali Golsoorat Pahlaviani. "Self-healing Concrete and Environmental Health." International Journal of Epidemiologic Research 5, no. 3 (September 18, 2018): 107–12. http://dx.doi.org/10.15171/ijer.2018.23.

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Nanotechnology will serve as a suitable solution to achieve high performance in future construction. Using this new technology results in creativity and innovation in the construction industry. One of these new technologies is the smart concrete which has received much emphasis in recent years. Many research and experiments have been conducted in scientific research centers around the world in this regard. It is an undeniable fact that concrete structures are prone to cracking. Natural processes have caused cracks in the concrete through which harmful substances entered the concrete leading to steel corrosion. To tackle this issue through the conventional method of concrete restorative, materials, especially polymers which are also harmful to the environment, are used. An alternative that the scientists have achieved is to employ bacteria in concrete through which to produce self-healing concrete and also to reduce the problems regarding the maintenance of concrete for the environment. Bacteria contribute to the durability and performance of the concrete and increase the service life of the concrete.

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11

Su, Yen-Fang, Cihang Huang, HyunGu Jeong, Tommy Nantung, Jan Olek, Prince Baah, and Na Lu. "Autogenous healing performance of internal curing agent-based self-healing cementitious composite." Cement and Concrete Composites 114 (November 2020): 103825. http://dx.doi.org/10.1016/j.cemconcomp.2020.103825.

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12

Jun Hyeong Kim, Jae-Suk Ryou, Hong-Gi Kim, Tae Ho Ahn, Yong-Soo Lee, and Abdul Qudoos. "Self-healing phenomena using PVA coated granules for sustainable construction." Journal of Ceramic Processing Research 20, no. ll (July 2019): 70–76. http://dx.doi.org/10.36410/jcpr.2019.20..70.

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13

Henderson, Julie. "Book Review: Narrativeand the Cultural Construction of Illness and Healing." Journal of Sociology 38, no. 3 (September 2002): 306–7. http://dx.doi.org/10.1177/144078330203800310.

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14

Baer, Hans A. "Three perspectives on the cultural construction of disease and healing." Reviews in Anthropology 30, no. 2 (June 2001): 175–90. http://dx.doi.org/10.1080/00988157.2001.9978279.

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15

Litina, Chrysoula, and Abir Al-Tabbaa. "First generation microcapsule-based self-healing cementitious construction repair materials." Construction and Building Materials 255 (September 2020): 119389. http://dx.doi.org/10.1016/j.conbuildmat.2020.119389.

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16

Liu, Ji-Dong, Xiang-Yun Du, Cai-Feng Wang, Qing Li, and Su Chen. "Construction of triple non-covalent interaction-based ultra-strong self-healing polymeric gels via frontal polymerization." Journal of Materials Chemistry C 8, no. 40 (2020): 14083–91. http://dx.doi.org/10.1039/d0tc02986f.

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17

Feng, Libang, Zhengyang Yu, Yaohui Bian, Yanping Wang, Yanhua Zhao, and Liuxiaohui Gou. "Effect of failure modes on healing behavior and multiple healing capability of self-healing polyurethanes." Construction and Building Materials 186 (October 2018): 1212–19. http://dx.doi.org/10.1016/j.conbuildmat.2018.08.048.

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18

Beard, David. "How Can You Not Shout, Now That the Whispering Is Done? Accounts of the Enemy in US, Hmong, and Vietnamese Soldiers’ Literary Reflections on the War." Humanities 8, no. 4 (November 1, 2019): 172. http://dx.doi.org/10.3390/h8040172.

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As typified in the Christmas Truce, soldiers commiserate as they see themselves in the enemy and experience empathy. Commiseration is the first step in breaking down the rhetorical construction of enemyship that acts upon soldiers and which prevents reconciliation and healing. This essay proceeds in three steps. We will identify first the diverse forms of enemyship held by the American, by the North Vietnamese, and by the Hmong soldiers, reading political discourse, poetry, and fiction to uncover the rhetorical constructions of the enemy. We will talk about both an American account and a North Vietnamese account of commiseration, when a soldier looks at the enemy with compassion rooted in identification. Commiseration is fleeting; reconciliation and healing must follow, and so finally, we will look at some of the moments of reconciliation, after the war, in which Vietnamese, Hmong and American soldiers (and their children and grandchildren) find healing.

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19

Wu, Shaopeng, Inge Hoff, Serji Amirkhanian, and Yue Xiao. "Special Issue of Environment-Friendly Construction Materials." Materials 12, no. 7 (April 3, 2019): 1101. http://dx.doi.org/10.3390/ma12071101.

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This special issue, “Environment-Friendly Construction Materials”, has been proposed and organized as a means to present recent developments in the field of construction materials. For this reason, the articles highlighted in this editorial relate to different aspects of construction materials, from pavement materials to building materials, from material design to structural design, from self-healing to cold recycling, from asphalt mixture to cement concrete.

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20

Xu, Jing, and Wu Yao. "Multiscale mechanical quantification of self-healing concrete incorporating non-ureolytic bacteria-based healing agent." Cement and Concrete Research 64 (October 2014): 1–10. http://dx.doi.org/10.1016/j.cemconres.2014.06.003.

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21

Riara, Martin, Ping Tang, Liantong Mo, Barugahare Javilla, and Shaopeng Wu. "Investigation into crack healing of asphalt mixtures using healing agents." Construction and Building Materials 161 (February 2018): 45–52. http://dx.doi.org/10.1016/j.conbuildmat.2017.11.074.

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22

Monks, Judith. "Book Reviews: Narrative and the Cultural Construction of Illness and Healing." Sociological Review 50, no. 1 (February 2002): 142–43. http://dx.doi.org/10.1111/1467-954x.00359-2.

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23

Ferrara, L. "Self-healing cement-based materials: an asset for sustainable construction industry." IOP Conference Series: Materials Science and Engineering 442 (November 27, 2018): 012007. http://dx.doi.org/10.1088/1757-899x/442/1/012007.

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24

Foltz, Tanice G. "The Social Construction of Reality in a Para-Religious Healing Group." Social Compass 34, no. 4 (November 1987): 397–413. http://dx.doi.org/10.1177/003776868703400406.

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L 'A uteur de cet article présente une série de données récoltées par observation participante au sein d'un groupe de guérison para-religieux. Trois topiques de base ont retenu l'attention pour décrire le processus de construction sociale de la réalité dans ce groupe: le pouvoir d'utiliser un langage «inventé», la conception du monde qui transparaît de l'utilisation de ce langage, l'impor tance de la combinaison des éléments précédents avec un rituel performatif.

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Dai, Baoying, Yunru Yu, Yukai Chen, Hengming Huang, Chunhua Lu, Jiahui Kou, Yuanjin Zhao, and Zhongzi Xu. "Construction of Self‐Healing Internal Electric Field for Sustainably Enhanced Photocatalysis." Advanced Functional Materials 29, no. 16 (January 11, 2019): 1807934. http://dx.doi.org/10.1002/adfm.201807934.

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26

Lado, Ludovic, Coulibaly Navigue Félicien, and Jacquineau Azetsop. "The social construction of the legitimacy of Christian healing in Abidjan." Journal of Contemporary African Studies 36, no. 3 (July 3, 2018): 334–50. http://dx.doi.org/10.1080/02589001.2018.1492709.

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27

Peng, Zhi-gang, Chun-yang Yu, Qian Feng, Yong Zheng, Jin-hua Huo, and Jia-rong Wu. "Synthesis, characterisation and application of self-healing material in oil well cement for healing microcracks." Advances in Cement Research 32, no. 11 (November 2020): 519–26. http://dx.doi.org/10.1680/jadcr.19.00004.

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28

Holmsen, Katherine. "Narrative and the Cultural Construction of Illness and Healing:Narrative and the Cultural Construction of Illness and Healing." Transforming Anthropology 11, no. 1 (January 2002): 68–69. http://dx.doi.org/10.1525/tran.2002.11.1.68.

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29

Delmouzou, Efrossyni. "Narrative and the Cultural Construction of Illness and Healing:Narrative and the Cultural Construction of Illness and Healing." Medical Anthropology Quarterly 16, no. 3 (September 2002): 380–81. http://dx.doi.org/10.1525/maq.2002.16.3.380.

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30

Nomfundo Mlisa, Lily Rose. "I am an igqirha (healer): phenomenological and experiential spiritual journey towards healing identity construction." Numen 22, no. 1 (February 11, 2020): 220–39. http://dx.doi.org/10.34019/2236-6296.2019.v22.29618.

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Traditional healers are acknowledged within their communities as possessing special insight, intuition knowledge and skills to connect and converse with the universe better than an ordinary person. African religions are endowed with a wide variety of traditional healers and healing practices, using diverse healing practices, symbolisms and interpretations relevant to the contextual setting of their cultures. Rooted in that diversified rich ecological heritage of the indigenous religions, are unique personal spiritual journeys that depict individual phenomenological and existential ways of constructing meaningful special spiritual healing identities. Healing identities are created and manifested in different socio-cultural, physical and spiritual abundant sacred spaces travelled by an initiate. This is an inborn gift from ancestors. The spiritual journey is abundantly infested by crisis and requires resilience, passion and faith. I give my personal phenomenological spiritual life journey in the traditional and spiritual quest for a holistically construed healing identity and proper individuation. The journey encompasses various stages with differentiated growth, maturity and competences to be acquired. The objective for this narrative is many fold. It is a response to various individual respondent experiences, questions and inquiries that I always receive from the conference audiences and unique feedback narratives from others who are either in the confusion stage or denial stage, yet they are aware they have a calling to accept. Ukuthwasa journey is briefly discussed and the historical ontology of ukuthwasa is mapped up. The discussion addresses the responses expected as evidence based results to confirm the reality of ukuthwasa and its value to the self, family and community at large. In conclude by highlighting, my own revelations and reflections on what could be done and how I finally achieved my healing identity and its relation to the universe at large.I am a fully-fledge trained igqirha, teacher, nurse and pastor. I practise as a Clinical psychologist and I have founded a prophesized church, a dream I had in 2001. I am also a founder of a community project for rural development at my village. All these achievements were shown to me by dreams and I followed my dreams under very challenging circumstances. I am from a family with a rich lineage of healers from both my paternal and maternal side, yet both became staunch Christian converts and ignored the cultural rites. To become a healer was not easy.

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31

Xu, JianHua, Sheng Ye, and JiaJun Fu. "Novel sea cucumber-inspired material based on stiff, strong yet tough elastomer with unique self-healing and recyclable functionalities." Journal of Materials Chemistry A 6, no. 47 (2018): 24291–97. http://dx.doi.org/10.1039/c8ta08498j.

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32

Gola, Marco, Gaetano Settimo, and Stefano Capolongo. "Indoor air in healing environments." Facilities 37, no. 9/10 (July 1, 2019): 600–623. http://dx.doi.org/10.1108/f-01-2018-0008.

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Purpose Several countries have carried out air quality monitoring in professional workplaces where chemicals are used. Health-care spaces have been less investigated. This paper aims to define a protocol, as developed by a research group, for inpatient rooms to understand the state of the art and to suggest design and management strategies for improving process quality. Design/methodology/approach Starting from the ISO-16000 standard and guidelines for monitoring activities, a protocol is defined for a one year investigation, with passive samplers. Through data analysis of the investigations and analysis of the cleaning and finishing products, heating, ventilation and air conditioning and maintenance activities, etc., it is possible to highlight the potential influences of chemical pollution. Findings A methodology is defined for understanding the chemical pollution and the possible factors related to construction materials, cleaning products and maintenance activities. Research limitations/implications The paper analyzes only a limited number of case studies because the monitoring activity is still in progress. Practical implications The investigation offers a starting point for a wide tool for the definition of design, maintenance and management strategies in health-care facilities. Social implications The research project, aimed at improving the knowledge of indoor air quality (IAQ) in inpatient rooms, is a starting point for a supporting tool for future regulations concerning health-care facilities. Originality/value IAQ is an issue on which many governments are focusing. Several health-care researchers have reported studies that aim at improving users’ health. Most investigations are about biological and physical risks, but chemical risks have been less studied. The paper suggests some design and management strategies for inpatient room.

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33

Hu, Zun-Xiang, Xiang-Ming Hu, Wei-Min Cheng, Yan-Yun Zhao, and Ming-Yue Wu. "Performance optimization of one-component polyurethane healing agent for self-healing concrete." Construction and Building Materials 179 (August 2018): 151–59. http://dx.doi.org/10.1016/j.conbuildmat.2018.05.199.

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34

Stryszewska, Teresa, and Marta Dudek. "Microstructure of autonomous self-healing concrete." MATEC Web of Conferences 322 (2020): 01022. http://dx.doi.org/10.1051/matecconf/202032201022.

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Over the past years, many research projects in the field of construction have been based on the concept of intelligent materials. One example of such materials is self-healing concrete. This material has the ability to repair the damage that occurs, which in concrete materials means filling/closing the cracks formed. This paper describes autonomous concrete that heals itself thanks to modifications with mineral additives. The study used the basic method of evaluating the effectiveness of the healing process, which is visual observation of the material. For this purpose, tests were performed using optical, digital and electron microscopes. In addition to the observations, a chemical analysis of the composition was performed using the EDS detector mounted on the SEM. The findings indicate the ability of filling cracks with accumulating products of reaction with water.

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35

TAKASHIMA, Yoshinori, Takahiro KAKUTA, Masaki NAKAHATA, and Akira HARADA. "Construction of Stimuli-Responsive Self-Healing Supramolecular Materials Using Host-Guest Interaction." NIPPON GOMU KYOKAISHI 85, no. 8 (2012): 260–64. http://dx.doi.org/10.2324/gomu.85.260.

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36

Yang, Hua Yun. "Construction Principle and Application Test of 220kV Self-Healing Optical Voltage Sensor." Applied Mechanics and Materials 511-512 (February 2014): 116–19. http://dx.doi.org/10.4028/www.scientific.net/amm.511-512.116.

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In this paper, a self-healing optical voltage sensor (SOVS) based on the Pockels electro-optical effect and capacitive divider of BGO crystal is reported. A special design of automatic calibrating reference voltage source is used to solve the drift problem of measurement accuracy of an optical voltage sensor that was influenced by temperature. According to the mathematic models of capacitive divider and voltage sensors based on Pockels electro-optical effect, the real-time correction principle of sensing channel parameters is introduced, and the structure design of optical voltage sensor is given out. According to the IEC 60044-7 standard, the proposed optical voltage sensor is tested. The advantages of this voltage sensor in application and some testing records in a typical 220kV substation are introduced as well. The practical operation conclusion indicates the SOVS works stably, value of measurement is correct, and the configuration is good for extend in applications.

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37

Glik, Deborah C. "The redefinition of the situation: the social construction of spiritual healing experiences." Sociology of Health and Illness 12, no. 2 (June 1990): 151–68. http://dx.doi.org/10.1111/1467-9566.ep11376371.

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38

de Souza, Lívia Ribeiro, Abir Al-Tabbaa, and Damiano Rossi. "Taking a microfluidic approach to the production of self-healing construction materials." Metal Powder Report 74, no. 3 (May 2019): 121–25. http://dx.doi.org/10.1016/j.mprp.2019.01.001.

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39

Nik Md Noordin Kahar, Nik Nur Farisha, Azlin Fazlina Osman, Eid Alosime, Najihah Arsat, Nurul Aida Mohammad Azman, Agusril Syamsir, Zarina Itam, and Zuratul Ain Abdul Hamid. "The Versatility of Polymeric Materials as Self-Healing Agents for Various Types of Applications: A Review." Polymers 13, no. 8 (April 7, 2021): 1194. http://dx.doi.org/10.3390/polym13081194.

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The versatility of polymeric materials as healing agents to prevent any structure failure and their ability to restore their initial mechanical properties has attracted interest from many researchers. Various applications of the self-healing polymeric materials are explored in this paper. The mechanism of self-healing, which includes the extrinsic and intrinsic approaches for each of the applications, is examined. The extrinsic mechanism involves the introduction of external healing agents such as microcapsules and vascular networks into the system. Meanwhile, the intrinsic mechanism refers to the inherent reversibility of the molecular interaction of the polymer matrix, which is triggered by the external stimuli. Both self-healing mechanisms have shown a significant impact on the cracked properties of the damaged sites. This paper also presents the different types of self-healing polymeric materials applied in various applications, which include electronics, coating, aerospace, medicals, and construction fields. It is expected that this review gives a significantly broader idea of self-healing polymeric materials and their healing mechanisms in various types of applications.

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40

Lv, Z., and D. Chen. "Overview of recent work on self-healing in cementitious materials." Materiales de Construcción 64, no. 316 (October 14, 2014): e034. http://dx.doi.org/10.3989/mc.2014.05313.

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Zhukova, G. G., and A. I. Saifulina. "RESEARCH ON THE USE OF SELF-HEALING CONCRETE." Construction and Geotechnics 11, no. 4 (December 15, 2020): 58–68. http://dx.doi.org/10.15593/2224-9826/2020.4.05.

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Concrete is currently the main man-made structural building material. It takes on extreme loads, undergoes periodic processes of freezing and thawing, which affects its integrity and, as a result, the process of cracking is observed. A promising direction of development in improving the performance properties of concrete is the use of self-healing elastic concrete, which allows increasing the strength characteristics of the concrete structure and preventing corrosion of the reinforcing elements. The article discusses the technology for the production of self-healing concrete, indicates the necessary conditions for self-healing and defines the features of its application. Also, the calculation of production costs was made and the economic effect from the basic version of the production of self-healing concrete was calculated, the relationship between the service life and cost was determined using the correlation method. As a result of the work, it was confirmed that the new method of self-healing has the prospect of implementation and is more effective in places where the production of repair work, and regular inspection of the condition of structures, in practical terms, is impossible: underground construction, underwater construction, high-rise buildings, bridge-type transport structures. The use of self-healing concrete ensures the preservation of the bearing capacity of concrete and reinforced concrete structures, which significantly increases the service life without damage and equally helps to reduce additional material costs for maintaining the facility. The same research method revealed that bio-concrete with the use of Bacillus subtilis bacteria allows reducing the level of environmental pollution by minimizing hydrocarbon emissions during the preparation of the mixture.

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Wang, Jiajie, Yingzhuo Lu, Qindan Chu, Chaoliang Ma, Lianrun Cai, Zhehong Shen, and Hao Chen. "Facile Construction of Superhydrophobic Surfaces by Coating Fluoroalkylsilane/Silica Composite on a Modified Hierarchical Structure of Wood." Polymers 12, no. 4 (April 4, 2020): 813. http://dx.doi.org/10.3390/polym12040813.

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Constructing superhydrophobic surfaces by simple and low-cost methods remains a challenge in achieving the large-scale commercial application of superhydrophobic materials. Herein, a facile two-step process is presented to produce a self-healing superhydrophobic surface on wood to improve water and mildew resistance. In this process, the natural hierarchical structure of wood is firstly modified by sanding with sandpaper to obtain an appropriate micro/nano composite structure on the surface, then a fluoroalkylsilane/silica composite suspension is cast and dried on the wood surface to produce the superhydrophobic surface. Due to the full use of the natural hierarchical structure of wood, the whole process does not need complicated equipment or complex procedures to construct the micro/nano composite structure. Moreover, only a very low content of inorganic matter is needed to achieve superhydrophobicity. Encouragingly, the as-obtained superhydrophobic surface exhibits good resistance to abrasion. The superhydrophobicity can still be maintained after 45 abrasion cycles under the pressure of 3.5 KPa and this surface can spontaneously recover its superhydrophobicity at room temperature by self-healing upon damage. Moreover, its self-healing ability can be restored by spraying or casting the fluoroalkylsilane/silica composite suspension onto this surface to replenish the depleted healing agents. When used for wood protection, this superhydrophobic surface greatly improves the water and mildew resistance of wood, thereby prolonging the service life of wood-based materials.

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Gao, Huimin, Zibiao Zhong, Haoyang Xia, Qianchao Hu, Qifa Ye, Yanfeng Wang, Lingyun Chen, Yumin Du, Xiaowen Shi, and Lina Zhang. "Construction of cellulose nanofibers/quaternized chitin/organic rectorite composites and their application as wound dressing materials." Biomaterials Science 7, no. 6 (2019): 2571–81. http://dx.doi.org/10.1039/c9bm00288j.

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Li, Victor C., and Emily Herbert. "Robust Self-Healing Concrete for Sustainable Infrastructure." Journal of Advanced Concrete Technology 10, no. 6 (June 28, 2012): 207–18. http://dx.doi.org/10.3151/jact.10.207.

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Yıldırım, Gürkan, Arash Hamidzadeh Khiavi, Seda Yeşilmen, and Mustafa Şahmaran. "Self-healing performance of aged cementitious composites." Cement and Concrete Composites 87 (March 2018): 172–86. http://dx.doi.org/10.1016/j.cemconcomp.2018.01.004.

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Gupta, Souradeep, Harn Wei Kua, and Sze Dai Pang. "Healing cement mortar by immobilization of bacteria in biochar: An integrated approach of self-healing and carbon sequestration." Cement and Concrete Composites 86 (February 2018): 238–54. http://dx.doi.org/10.1016/j.cemconcomp.2017.11.015.

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Roig-Flores, M., S. Formagini, and P. Serna. "Self-healing concrete-What Is it Good For?" Materiales de Construcción 71, no. 341 (March 9, 2021): e237. http://dx.doi.org/10.3989/mc.2021.07320.

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Self-healing of concrete is the process in which the material regenerates itself repairing inner cracks. This process can be produced by autogenous or autonomous healing. Autogenous healing is a natural process, produced by carbonation and/or continuing hydration. Autonomous healing is based on the use of specific agents to produce self-healing, which can be added directly to the concrete matrix, embedded in capsules or introduced through vascular networks. Some examples are superabsorbent polymers, crystalline admixtures, microencapsulated sodium silicate, and bacteria. This review is structured into two parts. The first part is an overview of self-healing concrete that summarises the basic concepts and the main advances produced in the last years. The second part is a critical discussion on the feasibility of self-healing concrete, its possibilities, current weaknesses, and challenges that need to be addressed in the coming years.

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Vaughn, Rick L., Shailendra K. Saxena, and John G. Sharp. "ultrastructural process of intestinal wound healing." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 1024–25. http://dx.doi.org/10.1017/s0424820100141494.

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We have developed an intestinal wound model that includes surgical construction of an ileo-cecal patch to study the complex process of intestinal wound healing. This allows approximation of ileal mucosa to the cecal serosa and facilitates regeneration of ileal mucosa onto the serosal surface of the cecum. The regeneration of ileal mucosa can then be evaluated at different times. The wound model also allows us to determine the rate of intestinal regeneration for a known size of intestinal wound and can be compared in different situations (e.g. with and without EGF and Peyer’s patches).At the light microscopic level it appeared that epithelial cells involved in regeneration of ileal mucosa originated from the enlarged crypts adjacent to the intestinal wound and migrated in an orderly fashion onto the serosal surface of the cecum. The migrating epithelial cells later formed crypts and villi by the process of invagination and evagination respectively. There were also signs of proliferation of smooth muscles underneath the migratory epithelial cells.

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Sarkar, Manas, Dibyendu Adak, Abiral Tamang, Brajadulal Chattopadhyay, and Saroj Mandal. "Genetically-enriched microbe-facilitated self-healing concrete – a sustainable material for a new generation of construction technology." RSC Advances 5, no. 127 (2015): 105363–71. http://dx.doi.org/10.1039/c5ra20858k.

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Williams, H. R., R. S. Trask, and I. P. Bond. "A probabilistic approach for design and certification of self-healing advanced composite structures." Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability 225, no. 4 (June 22, 2011): 435–49. http://dx.doi.org/10.1177/1748006x10397847.

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Design and certification of novel self-healing aerospace structures was explored by reviewing the suitability of conventional deterministic certification approaches. A sandwich structure with a vascular network self-healing system was used as a case study. A novel probabilistic approach using a Monte Carlo method to generate an overall probability of structural failure yields notable new insights into design of self-healing systems, including a drive for a faster healing time of less than two flight hours. In the case study considered, a mature self-healing system could be expected to reduce the probability of structural failure (compared to a conventional damage-tolerant construction) by almost an order of magnitude. In a risk-based framework this could be traded against simplified maintenance activity (to save cost) and/or increased allowable stress (to allow a lighter structure). The first estimate of the increase in design allowable stresses permitted by a self-healing system is around 8 per cent, with a self-healing system much lighter than previously envisaged. It is thought these methods and conclusions could have wider application to self-healing and conventional high-performance composite structures.

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