Printability and particle packing of 3D-printable limestone calcined clay cement composites

Long, Wu-Jian; Lin, Changgui; Tao, Jie-Lin; Ye, Tao–Hua; Yuan, Fang

doi:10.1016/j.conbuildmat.2021.122647

Cited by 54 publications

(3 citation statements)

References 62 publications

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“…Although the clay that came from the CTW also contains montmorillonite, its content is reduced due to the contribution of the surface coating layer of porcelain (SiO2), implying specific surface area alteration and, therefore, in the spreading of the pastes containing CTW. The reduction in the spread diameter between the PC and TC pastes is in line with the range verified in previous studies (15 to 30%), in which 50% of the clinker was replaced by calcined clay and calcitic limestone (LONG et al, 2021;NAIR et al, 2020).…”

Section: Influence Of Dosage On the Rheological Properties Of Ternary...supporting

confidence: 91%

“…The TC pastes, in general, showed lower spread when compared to the PC, on average 13% lower for the TC.CTW and 28% for the TC.CBW. This effect may be related to the higher specific surface area of the SCM, which can increase the water demand and reduce the fluidity of the paste (LONG et al, 2021). The reduction in spread diameter results from the decrease in the thickness of the paste available to lubricate the SCM particles during the flow of the mixture (MEHDIPOUR; KHAYAT, 2017).…”

Section: Influence Of Dosage On the Rheological Properties Of Ternary...mentioning

confidence: 99%

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Rheological properties and hydration of ternary cements containing clay brick, clay tile, marble, and phosphogypsum waste

Costa

Gonçalves

2022

Ambient. constr.

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No research demonstrates the effect of combined waste raw materials as an alternative to natural sources in Limestone Calcined Clay Cement (LC3). In this context, this study aimed to evaluate the influence of the composition of ternary cements (TCs) containing industrial waste on their rheological and hydration properties. As raw materials, Portland cement and clay brick (CBW), clay tile (CTW), marble (MW), and phosphogypsum (PG) wastes were used. The rheological behaviour of the pastes was analysed by the mini-slump evolution over time and rotational rheometry. Hydration was evaluated by isothermal calorimetry and XRD/Rietveld. An increase in the specific surface area enhances the yield stress and plastic viscosity of the paste. CBW and CTW have pozzolanic reactivity, presenting an increase in the content of non-crystalline phases, including calcium silicate hydrate (C-S-H). The TCs reached at least 70% of the compressive strength of theHigh Early Strength Portland cement paste.The results suggest that CBW, CTW, MW and PG can be used as an alternative to reduce the clinker factor and decrease the environmental and economic impacts associated with extracting natural raw materials for cement production.

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Section: Influence Of Dosage On the Rheological Properties Of Ternary...supporting

confidence: 91%

Section: Influence Of Dosage On the Rheological Properties Of Ternary...mentioning

confidence: 99%

Rheological properties and hydration of ternary cements containing clay brick, clay tile, marble, and phosphogypsum waste

Costa

Gonçalves

2022

Ambient. constr.

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“…Limestone calcined clay (LC2) as SCM (40 and 50% wt.) decreased GHG emissions between 41.6 and 50.2% and energy consumption between 38.2 and 45.2%, compared to 3DPCC without SCM [ 39 ]. In addition, secondary aggregates and aggregates from waste or by-products can also reduce the environmental impact of 3DCP, especially if given preference to locally available alternatives without upcycling strategies.…”

Section: Sustainability Analysismentioning

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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Applications of Additive Manufacturing in Construction and Building Industries

Mallikarjuna,

Hareeswar,

Sharath

2023

Practical Implementations of Additive Manufacturing Technologies

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Printability and particle packing of 3D-printable limestone calcined clay cement composites

Cited by 54 publications

References 62 publications

Rheological properties and hydration of ternary cements containing clay brick, clay tile, marble, and phosphogypsum waste

Rheological properties and hydration of ternary cements containing clay brick, clay tile, marble, and phosphogypsum waste

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

Applications of Additive Manufacturing in Construction and Building Industries

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