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Applied Sciences
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Latest Advances in Cement and Concrete Composites
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Latest Advances in Cement and Concrete Composites

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (1 March 2024) | Viewed by 9394

Special Issue Editor

Dr. Riyadh Al-Ameri

E-Mail Website
Guest Editor
School of Engineering, Faculty of Science Engineering & Built Environment, Deakin University, Melbourne, VIC 3216, Australia
Interests: sustainable construction materials; concrete durability; composite structures; geopolymers; fibre-reinforced concrete
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The construction industry is striving towards innovation in building materials and technology. Optimising material characteristics is a strategic goal aligned with the need for sustainable construction and durable structures. Composites are proven to have the potential for innovative applications in the construction industry where the material properties can be fully utilised. In particular, cement and concrete composites have undergone significant advancement and are the core theme of considerable amounts of research in recent times. Therefore,  in this Special Issue, we invite researchers interested in various aspects of the characterisation and durability of cement and concrete composites to contribute and share their findings and achievements. The aim is to provide a platform for the research community to advance cement-based composite technology and facilitate practical applications in the industry.

Dr. Riyadh Al-Ameri
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 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. Applied Sciences 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

  • fire-resistant cementitious composites
  • non-corrosive cementitious composites
  • alkali-activated binders, fly ash, and pozzolanic reaction
  • graphene and carbon nano-platelets/tubes
  • geopolymer mortar and concrete
  • polymer concrete
  • nanosilica and recycled glass
  • recycled composites
  • FRP composites
  • durability & life cycle assessment

Published Papers (5 papers)

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Research

48 pages, 5515 KiB  
Article
Prediction of Compressive Strength Loss of Normal Concrete after Exposure to High Temperature
by Xiaoyu Qin, Qianmin Ma, Rongxin Guo and Shaoen Tan
Appl. Sci. 2022, 12(23), 12237; https://doi.org/10.3390/app122312237 - 29 Nov 2022
Cited by 1 | Viewed by 1385
Abstract
In recent years, there has been an increasing number of fires in buildings. The methods for detecting residual properties of buildings after fires are commonly destructive and subjective. In this context, property prediction based on mathematical modeling has exhibited its potential. Backpropagation ( [...] Read more.
In recent years, there has been an increasing number of fires in buildings. The methods for detecting residual properties of buildings after fires are commonly destructive and subjective. In this context, property prediction based on mathematical modeling has exhibited its potential. Backpropagation (BP), particle swarm algorithms optimized-BP (PSO-BP) and random forest (RF) models were established in this paper using 1803 sets of data from the literature. Material and relevant heating parameters, as well as compressive strength loss percentage, were used as input and output parameters, respectively. Experimental work was also carried out to evaluate the feasibility of the models for prediction. The accuracy of all the models was sufficiently high, and they were also much more feasible for prediction. Moreover, based on the RF model, the importance of the inputting parameters was ranked as well. Such prediction has provided a new perspective to non-destructively and objectively assess the post-fire properties of concrete. Additionally, this model could be used to guide performance-based design for fire-resistant concrete. Full article
(This article belongs to the Special Issue Latest Advances in Cement and Concrete Composites)
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12 pages, 3329 KiB  
Article
Research on the Pavement Performance of Slag/Fly Ash-Based Geopolymer-Stabilized Macadam
by Jinchao Yue, Xiaofan Nie, Ziran Wang, Junlei Liu and Yanchun Huang
Appl. Sci. 2022, 12(19), 10000; https://doi.org/10.3390/app121910000 - 05 Oct 2022
Cited by 4 | Viewed by 1566
Abstract
The substitution of slag-based geopolymer materials for cement-stabilized macadam in road bases is in line with the demand for green and sustainable development in the transportation industry. Thus, slag/fly-ash-based geopolymer materials were prepared to stabilize macadam of road bases in this study. The [...] Read more.
The substitution of slag-based geopolymer materials for cement-stabilized macadam in road bases is in line with the demand for green and sustainable development in the transportation industry. Thus, slag/fly-ash-based geopolymer materials were prepared to stabilize macadam of road bases in this study. The mechanical properties, freeze-thaw resistance, and dry shrinkage durability of slag/fly-ash-based stabilized macadam materials were studied to analyze the influence of geopolymer dosage on these properties of stabilized macadam. Microscopic tests such as XRD, FITR, and SEM were carried out to explore the formation mechanism of strength and the characteristic of interface transition zone (ITZ). Results show that the 28 d compressive strength, compressive elastic modulus, and tensile strength of slag/fly-ash-based stabilized macadam increase linearly with the increase of geopolymer content. When the dosage of slag-based geopolymer is 4%, the 7 d unconfined compressive strength of slag/fly-ash-based stabilized macadam reaches 8.76 MPa, and the strength still reaches 14.84 MPa after five freeze-thaw cycles (28 d), which satisfy the application requirements of expressway and first-class highway base (JTG/T F20-2015). The dry shrinkage property of slag/fly-ash-based stabilized macadam is better than that of cement-fly-ash-stabilized macadam. When the amount of geopolymer is 3%, the dry shrinkage strain of slag/fly-ash-based stabilized macadam is 231.2 με, which is smaller than that of cement-fly-ash-stabilized macadam (261.3 με). No obvious porosity around the ITZ was detected, indicating good binding between the geopolymer and the aggregate. Full article
(This article belongs to the Special Issue Latest Advances in Cement and Concrete Composites)
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21 pages, 8154 KiB  
Article
Effect of Particle Sizes and Dosages of Rubber Waste on the Mechanical Properties of Rubberized Concrete Composite
by Safeer Abbas, Ayesha Fatima, Syed Minhaj Saleem Kazmi, Muhammad Junaid Munir, Shahid Ali and Mujasim Ali Rizvi
Appl. Sci. 2022, 12(17), 8460; https://doi.org/10.3390/app12178460 - 24 Aug 2022
Cited by 7 | Viewed by 1465
Abstract
The utilization of waste rubber in concrete composites has gained more attention nowadays owing to its enhanced engineering properties and eco-friendly viability. This study explored the effect of waste rubber sizes and its contents on the mechanical properties of developed concrete composites. Rubber [...] Read more.
The utilization of waste rubber in concrete composites has gained more attention nowadays owing to its enhanced engineering properties and eco-friendly viability. This study explored the effect of waste rubber sizes and its contents on the mechanical properties of developed concrete composites. Rubber waste with various particle sizes (R1, R5 and R10) was replaced with 10%, 20% and 30% of aggregates by volume, and the workability, compressive, splitting tensile and flexural strengths and impact resistance of the developed composite were investigated. An increase in the waste rubber contents decreased the slump of the composite due to the rougher surface of the rubber particles. The reduction in the slump was more pronounced for mixtures with smaller rubber sizes. Similarly, an increase in rubber contents decreased the compressive strength, tensile strength and flexural strength because of the lower stiffness of the used rubber waste and the poor bond between the rubber particles and the matrix. For instance, an approximately 27% decrease in compressive strength was observed for the mixture incorporating 20% of R1 rubber compared to that of the control mixture without rubber. It was observed that the incorporation of rubber waste in the concrete composite led to an enhanced resilience toward impact loading due to the improved energy dissipation mechanism offered by the rubberized concrete composite. For example, 13 blows in the case of 30% of the rubber replacement were required for the final crack as compared to 5 blows for the control mixture without rubber. It can be concluded that the choice of the optimal replacement ratio and the size of the rubber yield the developed rubberized concrete composite with a desirable strength and impact resistance. Full article
(This article belongs to the Special Issue Latest Advances in Cement and Concrete Composites)
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18 pages, 7256 KiB  
Article
Seismic Performance Analysis of Segmental Assembled Concrete-Filled Steel Tubular Pier with External Replaceable Energy Dissipation Ring
by Chengquan Wang, Zheng Qu, Yun Zou, Chongli Yin, Yanwei Zong and Zexuan Sun
Appl. Sci. 2022, 12(9), 4729; https://doi.org/10.3390/app12094729 - 08 May 2022
Cited by 4 | Viewed by 1461
Abstract
In order to develop a new type of prefabricated bridge structure system with green, efficient and recoverable function, which complies with the new requirements of rapid repair of pier function after earthquake, and improves the applicable performance of prefabricated assembled pier in medium [...] Read more.
In order to develop a new type of prefabricated bridge structure system with green, efficient and recoverable function, which complies with the new requirements of rapid repair of pier function after earthquake, and improves the applicable performance of prefabricated assembled pier in medium and high-intensity seismic areas, a precast segmental concrete-filled steel tubular (PSCFST) pier with an external energy dissipation ring is proposed. Based on ABAQUS analysis software, a four-segment PSCFST pier model is established, and the pseudo-static comparative analysis is carried out between the traditional PSCFST pier and the PSCFST pier with the external energy dissipation ring. The results show that compared with the traditional PSCFST pier, the lateral bearing capacity of the PSCFST pier with an external energy dissipation ring is increased by 60%, the energy dissipation capacity is increased by about 20 times, and the damage is concentrated in the energy dissipation ring, the damage is controllable, and the rapid repair after the earthquake can be realized by replacing energy dissipation devices and other measures. At the same time, the seismic performance of pier models with three different control parameters (initial prestress, material strength of energy dissipation ring and section width of energy dissipation ring) under reciprocating loading is analyzed. The results show that the initial prestress does not affect the cumulative energy consumption of the pier; the increase in the material strength of the energy dissipation ring improves the overall stiffness and improves the energy dissipation capacity of the PSCFST pier; the reduction in section width will affect the overall equivalent stiffness and unloading stiffness of the segmental pier, and the energy dissipation capacity will be significantly reduced. Full article
(This article belongs to the Special Issue Latest Advances in Cement and Concrete Composites)
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15 pages, 23273 KiB  
Article
Marine Geopolymer Concrete—A Hybrid Curable Self-Compacting Sustainable Concrete for Marine Applications
by Sherin Khadeeja Rahman and Riyadh Al-Ameri
Appl. Sci. 2022, 12(6), 3116; https://doi.org/10.3390/app12063116 - 18 Mar 2022
Cited by 6 | Viewed by 2216
Abstract
Marine environments are widely addressed as a serious threat to coastal concrete structures due to higher repair and rehabilitation costs. The rising concerns of climate change and related issues also require marine structures to be resilient and sustainable at the same time. Geopolymer [...] Read more.
Marine environments are widely addressed as a serious threat to coastal concrete structures due to higher repair and rehabilitation costs. The rising concerns of climate change and related issues also require marine structures to be resilient and sustainable at the same time. Geopolymer concrete has been given more significant consideration as an alternative, reporting better resistance to harsh and hazardous environmental exposure, including sulphate attacks, chloride attacks, and freeze–thaw climates. This study investigated the mechanical properties of fly ash (FA) and ground granulated blast furnace slag (GGBFS)-based self-compacting geopolymer concrete (SCGC), subjected to short term ambient and marine curing conditions. The mechanical performance, inclusive of compressive strength, tensile strength, and modulus of elasticity under three-month marine exposure compared to an ambient environment, indicates that the SCGC mix offered an increase in strength. It is reported that the compressive strength of SCGC increased to the range of 50 MPa after marine exposure in comparison to the 40 MPa strength after 28-day curing. A similar increase in indirect tensile strength and modulus of elasticity were observed for the test specimens, with no signs of leaching of salts under marine exposure. Thus, the current SCGC acts as a sustainable construction material in counteracting the threats of marine degradation in civil structural components. Full article
(This article belongs to the Special Issue Latest Advances in Cement and Concrete Composites)
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