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Special Issue "Properties and Novel Applications of Recycled Aggregates"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Construction and Building Materials".

Deadline for manuscript submissions: 31 May 2020

Special Issue Editor

Guest Editor
Prof. Fernando Lopez Gayarre

University of Oviedo. Department of Construction and Manufacturing Engineering. Campus de Gijon. 33203 Gijon, Spain
Website | E-Mail
Interests: sustanaible construction materials; recycled aggregates; concrete technologies; ultra high-performance concrete; selfcompacting concrete

Special Issue Information

Dear Colleagues,

The aggregates used in construction are the natural resource more consumed in the world after the air and water. Due to the overexploitation, all the environmental laws reward the use of recycled materials to guarantee the reduction of the consumption of natural aggregates. The use of reclaimed aggregates, reused aggregates and recycled aggregates increase the sustainability in the construction activities. Nowadays, they are strategic materials in the manufacturing of green concrete and mortars and as road construction eco-efficient materials. In addition, the use of recycled aggregates from industrial or mining by-products present great potential in the construction activities as recycled aggregates and/or supplementary cementitious materials.

This Special Issue is open to new experiences in construction materials and/or works made with recycled aggregates, including:

-Reclaimed aggregates from returned concrete waste from the washed of the mixer truck (reclaimed aggregates);

-Recycled concrete aggregates from crushed old concrete of construction and demolition waste;

-Recycled ceramic aggregates from brick and tiles waste and/or ceramic sanitary waste;

-Recycled mixed waste of concrete and ceramic waste from construction and demolition waste;

-Recycled glass aggregates from cullet glasses;

-Recycled plastic aggregates from plastic waste, for example, recycled polycarbonate particles waste from electric wires;

-Recycled aggregates from iron and steel industry waste (granulated blast furnace slag, electric furnace slag, Steel furnace slag);

-Recycled aggregates from processed scrap tires like tire chips and crumb rubber;

-Fly ash;

-Furnace bottom ash and incinerator bottom ash;

-Recycled mine aggregates from mine waste (coal washer rejects, fluorite waste, granite cutting waste, etc);

-Others recycled aggregates like rice husk, woodchip, etc.

Prof. Fernando Lopez Gayarre
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (1 paper)

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Research

Open AccessArticle
Chloride Induced Reinforcement Corrosion in Mortars Containing Coal Bottom Ash and Coal Fly Ash
Materials 2019, 12(12), 1933; https://doi.org/10.3390/ma12121933
Received: 30 May 2019 / Revised: 10 June 2019 / Accepted: 12 June 2019 / Published: 15 June 2019
PDF Full-text (5909 KB) | HTML Full-text | XML Full-text
Abstract
Coal bottom ash is normally used as aggregate in mortars and concretes. When it is ground, its characteristics are modified. Therefore, the assessment of its long-term durability must be realized in depth. In this sense, an accelerated chloride ingress test has been performed [...] Read more.
Coal bottom ash is normally used as aggregate in mortars and concretes. When it is ground, its characteristics are modified. Therefore, the assessment of its long-term durability must be realized in depth. In this sense, an accelerated chloride ingress test has been performed on reinforced mortars made of Portland cement with different amounts of coal bottom ash (CBA) and/or coal fly ash (CFA). Corrosion potential and corrosion rate were continuously monitored. Cement replacement with bottom and fly ash had beneficial long-term effects regarding chloride penetration resistance. Concerning corrosion performance, by far the most dominant influencing parameter was the ash content. Chloride diffusion coefficient in natural test conditions decreased from 23 × 10−12 m2/s in cements without coal ashes to 4.5 × 10−12 m2/s in cements with 35% by weight of coal ashes. Moreover, the time to steel corrosion initiation went from 102 h to about 500 h, respectively. Therefore, this work presents experimental evidence that confirms the positive effect of both types of coal ashes (CBA and CFA) with regard to the concrete steel corrosion. Full article
(This article belongs to the Special Issue Properties and Novel Applications of Recycled Aggregates)
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