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Special Issue "Advances in Lightweight Aggregate Concrete"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: 31 October 2019

Special Issue Editor

Guest Editor
Dr. J. Alexandre Bogas

Instituto Superior Técnico, Department of Civil Engineering and Architecture, University of Lisbon, Portugal
Website | E-Mail
Interests: New cementitious materials; Nano-reinforced cementitious materials; Advanced concrete technology; High-strength/high-performance concrete; Ultra-high-strength reactive powder concrete; Lightweight aggregate concrete; Recycled concrete; High volume fly ash concrete; Fiber-reinforced concrete; Carbon nanotube-reinforced concrete; Self-compacting concrete; Rheology of fresh concrete; Durability and service lifetime assessment of concrete; Concrete performance and characterization; Sustainability through concrete materials and construction; Repair, strengthening, and maintenance of concrete; Non-destructive and semi-destructive testing of concrete

Special Issue Information

Dear Colleagues,

Lightweight aggregate concrete (LWAC), usually characterized by densities less than 2000 kg/m3 and thermal conductivity coefficients up to 1.0 W/m °C, is a lighter and more energy efficient alternative solution to normal weight concrete. The high potential of LWAC has been recognized, especially when the self-weight is a determinant factor, such as in long-span bridges, shell structures of high slenderness and complicated shapes, skyscrapers, and building rehabilitation. Moreover, LWAC may result in more sustainable solutions due to its better insulating properties, lower transportation requirements, and lower demolition impact.

Although LWAC in buildings dates back to the old Indus Valley and Romans civilizations, it appears with relevance only in the second half of the twentieth century. Since then, LWAC has been subjected to ongoing technologic and scientific developments, especially in the last years with the technological development of high-performance concrete, the research and application of new additives and cementitious materials, the advances in manufacturing new lightweight aggregates (LWA), the growing interest in using lightweight concrete for offshore rigs and the more exigent durability, sustainability and applicability requirements of concrete have all contributed to a new generation of LWAC. This is why research has intensified and new advances in LWAC have been progressively attained.

However, despite research efforts, knowledge is still limited and some topics are the focus of ongoing investigation, such as special LWAC (ultra-high strength, high-performance, self-compacting, fiber-reinforced, incorporation of advanced cementitious materials), LWAC with alternative recycled or more sustainable LWA, durability and service lifetime assessment, structural design, long-term deformation, internal curing, and thermal efficiency of LWAC.

This Special Issue will present some of the latest developments and advances in lightweight aggregate concrete, concerning its technology, production, use, general performance, and new emerging solutions. Original papers dealing with new advances in LWAC are welcome, namely involving manufacture, material properties, mix design, fresh, and hardened behavior of concrete, durability, service life assessment, structural design, testing, modeling, sustainability, repair and maintenance, composite solutions, and new emerging types of LWA and LWAC. The main objective is to present some of the most recent research in the field of LWAC, to foster a better understanding and greater confidence in using LWAC, and highlight the remaining challenges and future perspectives for LWAC

 

Dr. J. Alexandre Bogas
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.

Keywords

  • Lightweight aggregate
  • Lightweight concrete
  • Manufacture
  • Durability
  • Service lifetime
  • High-performance
  • Self-compacting
  • Fiber-reinforced
  • Mix design
  • Structural design
  • Rheology
  • Hardened behavior
  • Long-term deformation
  • Internal curing
  • Thermal efficiency
  • Cementitious materials
  • Sustainability

Published Papers (1 paper)

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Research

Open AccessArticle
Testing and Prediction of Shear Performance for Steel Fiber Reinforced Expanded-Shale Lightweight Concrete Beams without Web Reinforcements
Materials 2019, 12(10), 1594; https://doi.org/10.3390/ma12101594
Received: 13 April 2019 / Revised: 10 May 2019 / Accepted: 14 May 2019 / Published: 15 May 2019
PDF Full-text (4271 KB) | HTML Full-text | XML Full-text
Abstract
In this paper, for a wide application of high-performance steel fiber reinforced expanded-shale lightweight concrete (SFRELC) in structures, the shear behavior of reinforced SFRELC beams without web reinforcements was experimentally investigated under a four-point bending test. Twenty-six beams were fabricated considering the influencing [...] Read more.
In this paper, for a wide application of high-performance steel fiber reinforced expanded-shale lightweight concrete (SFRELC) in structures, the shear behavior of reinforced SFRELC beams without web reinforcements was experimentally investigated under a four-point bending test. Twenty-six beams were fabricated considering the influencing parameters of SFRELC strength, shear-span to depth ratio, longitudinal reinforcement ratio and the volume fraction of the steel fiber. The statistical analyses based on the foundational design principles and the experimental results are made based on the shear cracking resistance, the shear crack distribution and width, the mid-span deflection, the patterns of shear failure, and the shear capacity of the specimens. This confirms the effective strengthening of steel fibers on the shear performance of reinforced SFRELC beams without web reinforcements. Based on the modifications to the formulas of reinforced conventional concrete, lightweight-aggregate concrete or steel fiber reinforced concrete (SFRC) beams, and the validation against the experimental findings, formulas are proposed for the prediction of shear cracking resistance and shear capacity of reinforced SFRELC beams without web reinforcements. Finally, formulas are discussed for the reliable design of the shear capacity of reinforced SFRELC beams without web reinforcements. Full article
(This article belongs to the Special Issue Advances in Lightweight Aggregate Concrete)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

1. Dr. J. Alexandre Bogas et al., Review on the carbonation and chloride induced corrosion of structural lightweight concrete

2. Alzaza A., Mastali M.*, Kinnunen P., Korat L., Ducman V., Abdollahnejad Z., Illikainen M.

Produce of lightweight geopolymer concretes using hybrid rock/glass wools

3. Gintaris Kaklauskas et al, Paper on deformation and cracking behaviour of RC members made of lightweight aggregate concrete

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