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    Publications

    Papers in International JournalsChapters/ Papers in International BooksChapters/ Papers in National BooksCommunications in International ConferencesCommunications in National ConferencesMSc ThesesBooksProceedingsPatentsTechnical/ Scientific ReportsPhD Theses
    @inbook {2386,
    	title = {Performance on an Alkali- Activated Cement-Based Binder (AACB) for Coating of an OPC Infrastructure Exposed to Chemical Attack: A Case Study},
    	booktitle = {Handbook of low carbon concrete},
    	volume = {1},
    	year = {2016},
    	note = {

    Tahri et al.

    }, month = {2016-10-05 00:00:00}, pages = {335-356}, publisher = {Elsevier}, organization = {Elsevier}, edition = {1}, chapter = {12}, abstract = {

    Premature degradation of ordinary Portland cement (OPC) concrete infrastructure is a current and serious problem with overwhelming costs amounting to several trillion dollars. The use of concrete surface treatments with waterproofing materials to prevent the access of aggressive substances is an important way of enhancing concrete durability. The most common surface treatments use polymeric resins based on epoxy, silicone (siloxane), acrylics, polyurethanes, or polymethacrylate. However, epoxy resins are not cost-efficient and have low resistance to ultraviolet radiation while polyurethanes have low resistance to chemical attack. This chapter presents results of an experimental investigation on the resistance to chemical attack (with sulfuric, hydrochloric, and nitric acid) of several materials: OPC concrete, high-performance concrete, epoxy resin, acrylic painting, and a fly ash{\textendash}based geopolymeric mortar. Three types of acids with three high concentrations (10\%, 20\%, and 30\%) were used to simulate long-term degradation. A cost analysis was also performed. The results show that the epoxy resin has the best resistance to chemical attack independently of the acid type and the acid concentration. However, the cost analysis shows that the epoxy resin{\textendash}based solution is the least cost-efficient solution being 70\% above the cost efficiency of the fly ash{\textendash}based geopolymeric mortar.

    }, keywords = {AACB, Chemical attack, Coatings, cost efficiency, Durability, OPC}, isbn = {9780128045244}, doi = {10.1016/B978-0-12-804524-4.00012-9}, url = {https://www.elsevier.com/books/handbook-of-low-carbon-concrete/unknown/978-0-12-804524-4}, author = {Tahri, W. and Abdollahnejad, Z. and Pacheco-Torgal, F. and Aguiar, J. B.} }

    About CTAC

    The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.

    Currently CTAC aggregates 25 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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    Centro de Território, Ambiente e Construção
    Escola de Engenharia da Universidade do Minho
    Campus de Azurém
    4800-058 Guimarães, Portugal

    Phone: + 351 253 510 200 (517 206)
    Fax: + 351 253 510 217

    Email: geral@ctac.uminho.pt


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