3D-Printing of Ultra-High-Performance Concrete for Robotic Bridge Construction

Javed, Ali; Mantawy, Islam M.; Azizinamini, Atorod

doi:10.1177/03611981211011645

Cited by 15 publications

(5 citation statements)

References 22 publications

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“…Other beneficial properties of UHPC are its low moisture content and porosity when compared to conventional concrete, making this material an ideal solution for maintenance and structural rehabilitation ( 29 , 30 ). Another application of UHPC is to connect prefabricated structural elements in bridges ( 22 , 31 ) and three-dimensional (3D) printing ( 32 ). It provides strong durability and resistance against unexpected lateral and blast loads ( 33 , 34 ).…”

Section: Methodsmentioning

confidence: 99%

Repair of Timber Piles Using Ultra-High-Performance Concrete: Investigation of Load Transfer and Load-Carrying Capacity

Cárdenas

Mantawy

Azizinamini

2022

Transportation Research Record: Journal of the Transportation R

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Timber piles have been used for a long time in bridges and marine structures. Many of these structures have exceeded their service life and require maintenance or repair because of deterioration. To address this issue, repair/retrofit techniques utilizing ultra-high-performance concrete (UHPC) can provide many advantages, such as minimizing repair material amounts and high durability because of its superior mechanical characteristics. This paper presents preliminary tests to comprehend the behavior of composite specimens made of timber and UHPC, including the load transfer mechanism and load-carrying capacity. For load transfer between the timber pile and UHPC, push-off and slant shear tests were conducted on composite timber and UHPC specimens with different surface preparations for timber surfaces. It was concluded that because of the smoothness of the UHPC surface, mechanical connectors (nails) provided the highest interface shear strength between timber and UHPC. For the load-carrying capacity, several specimens were tested under compression loading and it was concluded that timber treatment before casting UHPC plays a vital role in restoring the load-carrying capacity of timber piles.

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Section: Methodsmentioning

confidence: 99%

Repair of Timber Piles Using Ultra-High-Performance Concrete: Investigation of Load Transfer and Load-Carrying Capacity

Cárdenas

Mantawy

Azizinamini

2022

Transportation Research Record: Journal of the Transportation R

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“…UHPC is a cementitious composite with superior mechanical properties, such as high compressive strength, better tensile strength, and better durability, which makes it an ideal material for structural applications. Some of the key benefits of the 3D printing of UHPC are [109,110]:…”

Section: D Printing Of Ultra-high-performance Concretementioning

confidence: 99%

Sustainable Non-Conventional Concrete 3D Printing—A Review

2023

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In this review article, system materials for concrete 2D printing have been discussed, along with the various other aspects that are connected to sustainable construction. The article consists of an introduction giving the background of manufacturing that started almost two decades ago, including the non-conventional methods of building structures. It has been seen that there are various stainable materials in the field of 3D printing in construction, as the conversion of construction to 3D printing reduces waste generation. Further in this article, the cost comparison between conventional and non-conventional construction methods has been discussed, including the effectiveness of 3D printing; 3D printing is very effective in the sense that it requires the precise use of machinery and construction material. Full-scale 3D printing has also been seen in the building sector, but only to some extent. Some of the components of bridges, and even some of small bridges, have been constructed using 3D printing and ultra-high-performance concrete. Since there are various advantages to 3D building, there are also various disadvantages to 3D printing, such as how much it costs and finding the materials that are suitable for 3D printing, which might increase the cost. Polymers have also been used in 3D printing construction since polymers have a very long lifespan, and polymers may increase the strength of the final product by reinforcing the aggregate. Additionally, this technology gives us the opportunity to use various materials together for construction, such as recycled aggregates and geopolymers, along with concrete and cement, which might pose some challenges but are being used nowadays. A major concern with this technology is its impact on the labor market. Since in traditional construction huge amounts of man hours are required, concerns have been raised about the inclusion of this technology, as this might affect employment. Since most of the work will be done by machines, the need for labor will reduce. These are some of the issues that need attention. Finally, this article discusses the novelty and future scope of 3D printing in the construction sector, and concludes by outlining the scope of potential developments for 3D printing concrete by taking into account sustainability.

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“…The second group of technical challenges arises from the need for adequate structural properties of printing materials on large scales. Therefore, many authors focus their research on developing new materials [78,86].…”

Section: Challenge 3: Innovating Construction Technologiesmentioning

confidence: 99%

3D Printing Technologies in Architectural Design and Construction: A Systematic Literature Review

et al. 2022

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The proliferation of digital technologies considerably changed the field of architecture. Digital fabrication pushes architecture into an unexpected new domain of previously unachievable complexity, detail, and materiality. Understanding these technologies’ impact can help direct future research, innovate design and construction processes, and improve the education of future professionals. However, comprehensive reviews offering a holistic perspective on the effects of 3D printing technologies on architecture are limited. Therefore, this study aims to provide a systematic review of state-of-the-art research on 3D printing technologies in architectural design and construction. The review was performed using three major databases, and selected peer-reviewed journal articles published in the last ten-year period were included in quantitative and qualitative analyses. Using bibliometric analysis, the research progress is summarized through the identified trend of the annual number of articles, prominent authors and co-authorship network, and key topics in the literature organized in three clusters. Further, content analysis of selected articles enabled coding cluster themes. Moreover, the analysis differentiated two categories of 3D printing technologies based on the scale of the system, elaborating their peculiarities in terms of materials, methods, and applications. Finally, challenges and promising directions for future work and research challenges are discussed.

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3D-Printing of Ultra-High-Performance Concrete for Robotic Bridge Construction

Cited by 15 publications

References 22 publications

Repair of Timber Piles Using Ultra-High-Performance Concrete: Investigation of Load Transfer and Load-Carrying Capacity

Repair of Timber Piles Using Ultra-High-Performance Concrete: Investigation of Load Transfer and Load-Carrying Capacity

Sustainable Non-Conventional Concrete 3D Printing—A Review

3D Printing Technologies in Architectural Design and Construction: A Systematic Literature Review

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