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Sustainability of Reinforced Concrete
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Sustainability of Reinforced Concrete

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Engineering and Science".

Deadline for manuscript submissions: closed (15 January 2024) | Viewed by 6879

Special Issue Editors

Prof. Dr. Jamal A. Abdalla

E-Mail Website
Guest Editor
School of Engineering, American University of Sharjah, Sharjah 26666, United Arab Emirates
Interests: strengthening and retrofitting of structures; sustainable construction materials; computing in civil engineering and earthquake engineering
Dr. Blessen Skariah Thomas

E-Mail Website
Guest Editor
Department of Civil Engineering, National Institute of Technology, Calicut 673601, India
Interests: concrete technology; supplementary cementitious materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We invite you to contribute your work to a Special Issue of Sustainability entitled “Sustainability of Reinforced Concrete”. Due to the continuous advancement in construction technology, the requirements for construction materials have gradually increased. The development of materials which can reduce carbon footprints in terms of carbon sequestration is the need of the hour. Much research is ongoing on the use of alkali-activated materials and the development of a one-part geopolymer binde that can be utilized like ordinary Portland cement. Accurately understanding the research mechanism of solid industrial waste utilization, natural aggregates and natural fibres and the mechanical properties of green building materials, realizing resource utilization, improving the utilization rate of natural resources, and reducing environmental pollution are very important tasks for the development of sustainable buildings. This Special Issue aims to collect the latest research results on green building materials and solid waste utilization in the construction industry in general and in reinforced concrete especially.

Topics of interest include but are not limited to:

  • Sustainability of cement-based construction materials;
  • Sustainability of supplementary cementitious material;
  • Sustainability of aggregates;
  • Sustainability of fiber reinforced concrete;
  • Sustainability of concrete construction and methods;
  • Research progress of green building materials;
  • Low carbon construction technology innovation;
  • Solid waste resource utilization;
  • 3D printing technology;
  • Carbon footprint of materials, carbon reduction, and carbon sequestration;
  • Artificial materials in construction;
  • New green building materials and Engineering Applications;
  • Long-term performance research.

Prof. Dr. Jamal A. Abdalla
Dr. Blessen Skariah Thomas
Guest Editors

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 submissions that pass pre-check are 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. Sustainability 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 2400 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.

Keywords

  • concrete technology
  • sustainability
  • recycled materials
  • alkali-activated materials

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Published Papers (3 papers)

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Research

15 pages, 3764 KiB  
Article
Application of Coffee Husk Ash as Partial Replacement of Fine Aggregate in Concrete
by Radhika P. Bhandary, Asha U. Rao, Prathibha P. Shetty, S. Blesson and Blessen Skariah Thomas
Sustainability 2023, 15(18), 13328; https://doi.org/10.3390/su151813328 - 5 Sep 2023
Cited by 5 | Viewed by 2859
Abstract
The task of turning agricultural waste into practical construction and building materials has been placed before civil engineers. Coffee husk is produced in vast amounts due to the global commerce of coffee beans, which are incinerated into ash when used as fuel, producing [...] Read more.
The task of turning agricultural waste into practical construction and building materials has been placed before civil engineers. Coffee husk is produced in vast amounts due to the global commerce of coffee beans, which are incinerated into ash when used as fuel, producing coffee husk ash (CHA). Even though many researchers have worked on the utilization of CHA in concrete, they have been used as partial cement replacement but not as a replacement of aggregates. The experimental study of the performance of concrete on fine aggregate replaced partially with CHA is represented in this paper. The fine aggregate is replaced by 0%, 2%, 4%, 6%, and 8% by weight of CHA. The performance of the partially replaced fine aggregate with CHA is reviewed by considering the compressive strength and workability of fresh concrete and the splitting tensile strength, flexural strength, durability under acid and alkaline media, thermal conductivity, and rapid chloride permeability test of hardened concrete. The results indicate that the partial replacement of fine aggregate with 4% of CHA (CHA04) in concrete provides a positive impact to all the selected performance parameters. The compressive strength, flexural strength, and splitting tensile of the CHA04 mix were 43.4 MPa, 3.7 MPa, and 2.44 MPa, respectively, which were 28.4%, 19.35%, and 1.66%, respectively, greater than normal concrete mix (CHA00). Even the study of acid and alkaline attack on the CHA04 mix showed lesser strength reduction as compared to other mixes. The RCPT showed less chloride permeability, and the thermal conductivity is higher for CHA04, indicating lesser voids compared to other mixes. With the help of this investigation, it can be said that fine aggregate replacement with 4% CHA has the best strength and durability properties compared to regular concrete. Full article
(This article belongs to the Special Issue Sustainability of Reinforced Concrete)
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20 pages, 10158 KiB  
Article
Mechanical Properties of Fiber-Reinforced High-Volume Fly-Ash-Based Cement Composite—A Long-Term Study
by Laxman P. Kudva, Gopinatha Nayak, Kiran K. Shetty and H. K. Sugandhini
Sustainability 2023, 15(17), 13128; https://doi.org/10.3390/su151713128 - 31 Aug 2023
Cited by 2 | Viewed by 1484
Abstract
This article presents the long-term mechanical properties of a novel cement composite, no-aggregate concrete (NAC), containing 80% of low-calcium (class F) fly ash (F-FA) and 20% ordinary Portland cement (OPC) without aggregates. The study investigates the effect of adding polypropylene fibers (PPFs) in [...] Read more.
This article presents the long-term mechanical properties of a novel cement composite, no-aggregate concrete (NAC), containing 80% of low-calcium (class F) fly ash (F-FA) and 20% ordinary Portland cement (OPC) without aggregates. The study investigates the effect of adding polypropylene fibers (PPFs) in varying volume fractions to NAC by conducting compressive, splitting tensile, flexural, bond strength, and sorptivity tests, emphasizing the morphological features over a curing duration of up to three years. The results indicate that adding PPF has an insignificant effect on compressive strength. However, flexural, splitting tensile, and bond strength improve with an increasing volume fraction of PPF. The addition of PPF achieves a ductile failure which is desirable. The initial and final water absorption rate (sorptivity) reduces with the addition of PPF. Further, scanning electron microscopy (SEM) images reveal dense precipitation of C-S-H, while energy-dispersive X-ray spectroscopy (EDS) quantifies the hydration products. The ultrasonic pulse velocity (UPV) affirms the composite’s excellent quality. Full article
(This article belongs to the Special Issue Sustainability of Reinforced Concrete)
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18 pages, 13741 KiB  
Article
The Durability of High-Volume Fly Ash-Based Cement Composites with Synthetic Fibers in a Corrosive Environment: A Long-Term Study
by H. K. Sugandhini, Gopinatha Nayak, Kiran K. Shetty and Laxman P. Kudva
Sustainability 2023, 15(15), 11481; https://doi.org/10.3390/su151511481 - 25 Jul 2023
Cited by 5 | Viewed by 1485
Abstract
The utilization of class F fly ash (F-FA) is limited to 15–30% as a substitution for cement. The study intends to tap into the potential of high-volume F-FA as a pozzolan and micro filler by eliminating aggregates. The article presents the long-term behavior [...] Read more.
The utilization of class F fly ash (F-FA) is limited to 15–30% as a substitution for cement. The study intends to tap into the potential of high-volume F-FA as a pozzolan and micro filler by eliminating aggregates. The article presents the long-term behavior of a novel cement composite called no-aggregate concrete (NAC), incorporating 20% ordinary Portland cement (OPC) and 80% F-FA, with polypropylene (PP) fibers in 0.6, 0.8, and 1.0% volume fractions, in a corrosive environment. The bulk diffusion of preconditioned 100 mm cubes reveals that all mixtures’ chloride-binding capacity increases significantly with prolonged exposure. The total chloride content for mixtures M1, M2, and M3 is within acceptable limits as per EN 206. M4 with 1.0% PP fibers shows a higher total chloride content at 2 cm depth. The average chloride content for all mixtures is within 0.4%. The compressive strength of mixtures cured in water is about 90 MPa at 730 days, and is severely affected in the absence of fibers in a corrosive environment. The microstructure of mixtures at 730 days displays a cohesive, compact, continuous matrix, and the presence of unreacted F-FA. Full article
(This article belongs to the Special Issue Sustainability of Reinforced Concrete)
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