Use of municipal solid waste incineration ash in 3D printable concrete

Rehman, Atta Ur; Lee, Sang Min; Kim, J.H.

doi:10.1016/j.psep.2020.06.018

Cited by 46 publications

(30 citation statements)

References 50 publications

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“…In this test, the torque initially increases without the significant flow of the concrete but then at a certain value of the torque, the flow of the concrete increases, which corresponds to the static yield stress. Hand-held shear vane has also been used for the measurement of static yield stress [ 40 , 41 ], which is a popular test method in soil mechanics [ 42 ]. Flow curve test is used to calculate dynamic yield stress and plastic viscosity values of the concrete, which involves two stages: initial breakdown period to remove the thixotropic structure of the concrete and then reduction in the speed of the shear vane in incremental steps.…”

Section: Rheologymentioning

confidence: 99%

“…Alghamdi et al [ 147 ] observed that the addition of limestone reduced workability and yield stress of concrete, 30% of limestone addition as a binder in fly ash-based geopolymer improved shape stability and buildability of concrete. Rehman et al [ 41 ] used municipal solid waste incinerated (MSWI) bottom ash and fly ash in the development of printable concrete. Test results showed that the addition of MSWI fly ash produces favorable properties for the printing of concrete compared to the use of MSWI bottom ash and controlled concrete mix proportion.…”

Section: Printable MIX Designs and Influence Of Concrete Ingredients On Rheologymentioning

confidence: 99%

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3D Concrete Printing: A Systematic Review of Rheology, Mix Designs, Mechanical, Microstructural, and Durability Characteristics

2021

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This paper provides a state-of-the-art report on the up-to-date research on the emerging 3D concrete printing technology from the concrete materials perspective. It reviews the recent research focused on understanding and characterizing the rheological necessities of the concrete printing process and discusses how the researchers are tailoring compatible mix proportions for the 3D concrete printing process by using eco-friendly binders, waste aggregates, chemical admixtures, and nano-additives. This paper systematically evaluates anisotropic behavior in the mechanical properties of printed concrete and establishes an order for anisotropic behavior in the compressive, flexural, and tensile strengths along three different axes (X, Y, and Z axes) of printed concrete. It evaluates the ratio of flexural strength to the compressive strength of printed concrete along the above three axes. This article explains the influence of variation of printing process parameters on the mechanical properties and discusses reinforcement approaches used for increasing structural performance. The microstructure at the interface of adjacent layers and also at the interface of the reinforcement-cement matrix is discussed. The recent research on the durability performance of printed concrete is critically discussed and future research needs for 3D concrete printing are identified in this paper.

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Section: Rheologymentioning

confidence: 99%

Section: Printable MIX Designs and Influence Of Concrete Ingredients On Rheologymentioning

confidence: 99%

3D Concrete Printing: A Systematic Review of Rheology, Mix Designs, Mechanical, Microstructural, and Durability Characteristics

2021

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“…Although in the early days of 3D printing of concrete, the mixes had a high cement content, around 40-50%, as the technology evolved, mixes became lower in cement, which was replaced by other alternative binders [36][37][38][39][40][41]. Fly ash and slag are now used as a cement replacement or activated in 3D-printed geopolymers [42][43][44]. Ting et al [45] tried to replace sand with recycled glass in 3D printing, and although the results were not as good as the sand-cement mix, the results show a promising trajectory to use recycled aggregates in 3DP mixes.…”

Section: Waste Reduction and Use Of Alternative Bindersmentioning

confidence: 99%

Advanced Manufacturing in Civil Engineering

2021

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The main goal of this work is the analysis of potential energy and green benefits of 3D printing on building construction. Current literature reports a considerable number of benefits for 3D printing, namely, reduction of material use, lower operational costs and time-saving. The authors also mention design freedom, higher efficiency, productivity and quality. This work presents the latest developments in 3D printing in civil engineering, namely, a review of the last 3D printing projects and the limitations of construction 3D printing with a focus on large-scale applications, technology costs, mix development and optimisation and thermal behaviour.

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“…Researchers found that the solid wastes like waste fly ash and rice husk ash possessing active substances could promote the hydration process of cement. The addition of waste fly ash and rice husk ash were proven to increase the mechanical strengths and durability of concrete [7][8][9]. Moreover, the waste fly ash and rice husk ash could improve the corrosion resistance of steel bars in the reactive powder concrete.…”

Section: Introductionmentioning

confidence: 99%

Influence of Dolomite Rock Powder and Iron Tailings Powder on the Electrical Resistivity, Strength and Microstructure of Cement Pastes and Concrete

et al. 2022

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Dolomite rock powder (the waste stone residue in the production of machine-made sand and stone processing) and iron tailings powder formed by mineral processing industry are solid wastes, which occupy land resources, pollute the environment and release toxic substances without reasonable processing. The dolomite rock powder and iron tailings powder composing a large number of active substances could be advantageous to the cement-based materials. In this study, the electrical resistivity of cement paste and concrete was measured. Meanwhile, the influence of dolomite rock powder and iron tailings powder on the compressive strength of concrete was investigated. The electric flux of concrete was determined to estimate the chloride ion permeability. The scanning electron microscope (SEM) and X-ray diffraction were obtained to investigate the hydration of cement paste. Results showed the electrical resistivity of all specimens presented in this order: specimens with iron tailings < specimens with dolomite rock powder < blank specimens < specimens with ground granulated blast-furnace slag (GGBS) < specimens with fly ash. The correlation between electrical resistivity and curing age of cement paste or concrete has been deduced as a quadratic function. The addition of GGBS could improve the compressive strength of concrete. Meanwhile, when the other three types of mineral admixtures were added, 5% by mass ratio of the total binder materials was the optimum for the compressive strength. The curing ages, the fly ash, the GGBS and 5% dolomite rock powder or 5% iron tailings powder demonstrated a positive effect on the chloride ion impermeability. However, when higher dosages of dolomite rock powder or iron tailings powder were added, the effect was the opposite. Finally, the compactness of the microstructure and the Ca(OH)2 of cement paste could be improved by a small dosage of dolomites or iron tailings (less than 5%).

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Use of municipal solid waste incineration ash in 3D printable concrete

Cited by 46 publications

References 50 publications

3D Concrete Printing: A Systematic Review of Rheology, Mix Designs, Mechanical, Microstructural, and Durability Characteristics

3D Concrete Printing: A Systematic Review of Rheology, Mix Designs, Mechanical, Microstructural, and Durability Characteristics

Advanced Manufacturing in Civil Engineering

Influence of Dolomite Rock Powder and Iron Tailings Powder on the Electrical Resistivity, Strength and Microstructure of Cement Pastes and Concrete

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