Utilization of submicron autoclaved aerated concrete waste to prepare eco-friendly ultra-high performance concrete by replacing silica fume

Yang, Jin; Zeng, Jingyi; He, Xingyang; Su, Ying; Tan, Hongbo; Min, Hongping; Hu, Huachao; Ye, Hualiang; Ma, Mengyang; Strnadel, Bohumír

doi:10.1016/j.jclepro.2022.134252

Cited by 19 publications

(4 citation statements)

References 74 publications

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“…Fernando A. N. Silva et al [40] Buildings Waste coarse aggregate and recycled fine aggregate J Kim, H Jang [41] Journal of Cleaner Production Recycled concrete powder Y Guo et al [42] Construction and Building Materials Recycled concrete powder A Aldemir et al [43] Journal of Building Engineering Waste coarse aggregate J. Jolly Abraham et al [44] Materials Today: Proceedings Waste coarse aggregate I Patra et al [45] Sustainable Energy Technologies and Assessments Waste coarse aggregate J Yang et al [46] Journal of Cleaner Production Wet-grinded submicron autoclaved aerated concrete waste K Khan et al [47] Materials Waste marble dust A Zhou et al [48] Resources, Conservation, and Recycling…”

Section: Waste Coarse Aggregatementioning

confidence: 99%

Comprehensive review of LCA studies in Civil Engineering

Thapa,

Baral,

Adhikari

2023

BIBECHANA

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This review paper explores the application of Life Cycle Assessment (LCA) within the domain of civil engineering, aiming to provide a comprehensive overview of current research, methodologies, challenges, and future trends. LCA serves as a pivotal tool for assessing the environmental impact of infrastructure projects, yet gaps persist in its integration with socioeconomic dimensions, regional considerations, and dynamic modeling. By analyzing existing literature and scholarly discussions, this review identifies research gaps and proposes directions for enhancing the applicability and effectiveness of LCA in civil engineering. Moreover, it examines future trends such as the integration of advanced technologies, stakeholder engagement, and policy implementation, poised to shape the landscape of LCA practices in the civil engineering sector. Ultimately, this review paper contributes to the understanding of LCA's potential to drive sustainable decision-making in infrastructure development, paving the way for more informed and environmentally conscious practices.

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Section: Waste Coarse Aggregatementioning

confidence: 99%

Comprehensive review of LCA studies in Civil Engineering

Thapa,

Baral,

Adhikari

2023

BIBECHANA

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“…and enforced carbonation [93,94], and glass production via thermal treatment and fast quenching [95,96].…”

Section: Phase Assemblage During Cement Hydrationmentioning

confidence: 99%

Roles of carbonated recycled fines and aggregates in hydration, microstructure and mechanical properties of concrete: A critical review

Zhang

Chen

Wang

et al. 2023

Cement and Concrete Composites

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“…Meanwhile, high amount of silica fume is not conducive to the volume stability and durability of UHPC, because that the high specific surface area and rapid hydration of silica fume easily leads to high internal stresses and more initial defects [10][11][12]. Yang et al [13] used wet-grinded submicron autoclaved aerated concrete waste to replace 100% of silica fume and found that the 28-day compressive strength can be maintained at the same level. Li et al [14] mixed water-quenched manganese slag and fly ash mechanically at a ratio of 1:1 for 90 min to obtain a hybrid mineral mixture, and this kind of mineral mixture can be used to instead of 10% silica fume or 10% cement without adverse effect on the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Optimizing binders with maximum using of industrial waste to develop low carbon ultra-high performance concrete

Lu,

Huang,

Feng

et al. 2024

Eng. Res. Express

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Optimizing binders by using industrial waste and then adjusting microstructure has potential to develop low production cost and low carbon emission ultra-high performance concrete (UHPC) to meet different practical engineering requirements. This study first investigates the influence of silica fume, cenosphere and fly ash on paste mixing time, flowability, flexural and compressive strength of UHPC by using three-factor and four-level orthogonal test. Moreover, the effect of fly ash and slag content were further discussed, and the modification mechanisms of binders were revealed by analyzing pore structure, interface and characteristics of hydration products. The results show that silica fume and cenosphere are the most sensitive factors affecting paste mixing time and flowability of UHPC, respectively. The sensitivity of binders on compressive and flexural strength of UHPC can be ranked according to silica fume > fly ash > cenosphere and cenosphere > fly ash > silica fume, respectively. The binders’ composition for low-carbon UHPC with compressive strength grade of 120 MPa is that cement: cenosphere: silica fume: fly ash equals to 1:0.33:0.33:56, and the total amount of fly ash reaches 40%. Meanwhile, the 28d compressive/flexural strength decreases and the flowability increases with the increase of fly ash content, resulting from pore volume with size of 5-50 nm and Ca/Si ratio on the interface between steel fiber and matrix increase. The flowability of UHPC with slag is reduced and the cumulative pore volume with size of 50 nm-5 um pores is increased due to the influence of slag morphology, but the porosity and interfacial Ca/Si ratio is reduced because of the high pozzolanic activity of slag, leading to similar compressive and flexural strength with that of UHPC with fly ash.

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Utilization of submicron autoclaved aerated concrete waste to prepare eco-friendly ultra-high performance concrete by replacing silica fume

Cited by 19 publications

References 74 publications

Comprehensive review of LCA studies in Civil Engineering

Comprehensive review of LCA studies in Civil Engineering

Roles of carbonated recycled fines and aggregates in hydration, microstructure and mechanical properties of concrete: A critical review

Optimizing binders with maximum using of industrial waste to develop low carbon ultra-high performance concrete

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