Assessment of materials, design parameters and some properties of 3D printing concrete mixtures; a state-of-the-art review

Şahin, Hatice Gizem; Mardani‐Aghabaglou, Ali

doi:10.1016/j.conbuildmat.2021.125865

Cited by 72 publications

(34 citation statements)

References 114 publications

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“…As can be expected, a low content of GWTR would imply the preservation of a good mechanical performance. As also confirmed by the literature on 3D concrete printing technology, a higher binder dosage is used in printable cementitious mixtures compared to conventional concrete [28].…”

supporting

confidence: 53%

Life Cycle Assessment (LCA) of 3D Concrete Printing and Casting Processes for Cementitious Materials Incorporating Ground Waste Tire Rubber

2023

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Ordinary concrete is an indispensable construction material of modern society which is used for everything from mundane road pavements to building structures. However, it is often used for non-load-bearing applications (for instance, insulating lightweight building units) where mechanical strength is not a priority. This leads to an avoidable depletion of natural aggregates which could instead be replaced by alternative waste materials capable of conferring to the material the desired performance while ensuring a “green” route for their disposal. Furthermore, the automation of production processes via 3D printing can further assist in the achievement of a more advanced and sustainable scenario in the construction sector. In this work, performance and environmental analyses were conducted on a 3D-printable cementitious mix engineered with ground waste tire rubber aggregates. The research proposed a comparative study between rubberized concrete mixes obtained by 3D printing and traditional mold-casting methods to achieve a comprehensive analysis in terms of the mix design and manufacturing process. To evaluate the environmental performance (global warming potential and cumulative energy demand) of the investigated samples, Life Cycle Assessment models were built by using the SimaPro software and the Ecoinvent database. The Empathetic Added Sustainability Index, which includes mechanical strength, durability, thermo-acoustic insulation, and environmental indicators, was defined to quantify the overall performance of the samples in relation to their engineering properties and eco-footprint.

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confidence: 53%

Life Cycle Assessment (LCA) of 3D Concrete Printing and Casting Processes for Cementitious Materials Incorporating Ground Waste Tire Rubber

2023

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“…It showed that coarse aggregates can be included in a 3DP mix, but a delivery system and optimum combination of additives for such a mix need to be devised. Şahin and Mardani-Aghabaglou (2022) highlighted the importance of the mix design on the printability performance and the rheological properties in 3DCP. Sulfoaluminate cement is found to induce rapid hardening, high strength, and low shrinkage.…”

Section: Designmentioning

confidence: 99%

A review of concrete 3D printed structural members

Raphael

Senthilnathan

Patel

et al. 2023

Front. Built Environ.

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Concrete 3D Printing (3DP) is a potential technology for increasing automation and introducing digital fabrication in the construction industry. Concrete 3D Printing provides a significant advantage over conventional or precast methods, such as the prospects of topologically optimized designs and integrating functional components within the structural volume of the building components. Many previous studies have compiled state-of-art studies in design parameters, mix properties, robotic technologies, and reinforcement strategies in 3D printed elements. However, there is no literature review on using concrete 3D Printing technology to fabricate structural load-carrying elements and systems. As concrete 3DP is shifting towards a large-scale construction technology paradigm, it is essential to understand the current studies on structural members and focus on future studies to improve further. A systematic literature review process is adopted in this study, where relevant publications are searched and analyzed to answer a set of well-defined research questions. The review is structured by categorizing the publications based on issues/problems associated with structural members and the recent technology solutions developed. It gives an overall view of the studies, which is still in its nascent stage, and the areas which require future focus on 3D printing technology in large-scale construction projects.

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“…Indeed, using 3D printing technology in the construction industry can reduce the need for on-site workforce since continuous project processing is through remote control via Building Information Modeling tools and Artificial Intelligence. Therefore, in addition to increasing productivity, 3D construction printing creates high-end technology-based jobs and solves the existing limitations of the labour workforce in this industry [ 17 ]. Improvement in worksite safety and reduced work accidents is expected due to the lower dependency on human labour and consequently less risks [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

3D Construction Printing Standing for Sustainability and Circularity: Material-Level Opportunities

Fonseca¹,

Matos

2023

Materials

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Three-dimensional Cementitious materials Printing (3DCP) is a cutting-edge technology for the construction industry. Three-dimensional printed buildings have shown that a well-developed automated technology can foster valuable benefits, such as a freeform architectural design without formworks and reduced human intervention. However, scalability, commercialization and sustainability of the 3DPC technology remain critical issues. The current work presents the ecological fragility, challenges and opportunities inherent in decreasing the 3DCP environmental footprint at a material level (cementitious materials and aggregates). The very demanding performance of printable mixtures, namely in a fresh state, requires high dosages of cement and supplementary cementitious materials (SCM). Besides the heavy carbon footprint of cement production, the standard SCM availability might be an issue, especially in the longer term. One exciting option to decrease the embodied CO2 of 3DCP is, for example, to incorporate alternative and locally available SCM as partial cement replacements. Those alternative SCM can be wastes or by-products from industries or agriculture, with no added value. Moreover, the partial replacement of natural aggregate can also bring advantages for natural resource preservation. This work has highlighted the enormous potential of 3DCP to contribute to reducing the dependence on Portland cement and to manage the current colossal wastes and by-products with no added value, shifting to a Circular Economy. Though LCA analysis, mixture design revealed a critical parameter in the environmental impact of 3DCP elements or buildings. Even though cement significantly affects the LCA of 3DCP, it is crucial to achieving adequate fresh properties and rheology. From the literature survey, mixtures formulated with alternative SCM (wastes or by-products) are still restricted to rice husk ash, Municipal Solid Waste ashes and recycled powder from construction and demolition wastes. Natural aggregate replacement research has been focused on recycled fine sand, mine tailing, copper tailing, iron tailing, ornamental stone waste, recycled glass, crumb rubber, rubber powder and granules, recycled PET bottles and steel slag. However, flowability loss and mechanical strength decrease are still critical. Research efforts are needed to find low-carbon cement replacements and mix-design optimization, leading to a more sustainable and circular 3DCP while ensuring the final product performance.

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Assessment of materials, design parameters and some properties of 3D printing concrete mixtures; a state-of-the-art review

Cited by 72 publications

References 114 publications

Life Cycle Assessment (LCA) of 3D Concrete Printing and Casting Processes for Cementitious Materials Incorporating Ground Waste Tire Rubber

Life Cycle Assessment (LCA) of 3D Concrete Printing and Casting Processes for Cementitious Materials Incorporating Ground Waste Tire Rubber

A review of concrete 3D printed structural members

3D Construction Printing Standing for Sustainability and Circularity: Material-Level Opportunities

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