☆ 4.7 Article

Safe environmentally friendly reuse of red mud modified phosphogypsum composite cementitious material

CONSTRUCTION AND BUILDING MATERIALS (2023)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Construction & Building Technology

Formulation and optimization of a phosphogypsum-fly ash-lime composite for road construction: A statistical mixture design approach

Sarra Meskini et al.

Summary: The study investigated the valorization of phosphogypsum and fly ash as road construction materials through lime stabilization. Statistical analysis showed that phosphogypsum addition decreased measured responses, while fly ash and lime caused them to increase. Fly ash addition notably increased compressive strengths at early ages, while at longer curing periods, the interaction with lime and the use of phosphogypsum as a catalyst improved fly ash reactivity.

CONSTRUCTION AND BUILDING MATERIALS (2022)

添加到收藏夹

Article Construction & Building Technology

Research on basalt fiber reinforced phosphogypsum-based composites based on single factor test and RSM test

Lang Xie et al.

Summary: The study investigated the effects of basalt fibers (BFs) with different lengths and dosages on the properties of phosphogypsum-based composites (PGCs). It was found that BFs significantly enhanced the strength and toughness of the mixtures, reduced porosity, and water absorption. The fiber dosage had a greater impact on the properties than fiber length, and their interaction varied based on the tested properties. RSM models successfully predicted optimal parameters for multi-objective optimization of the composites.

CONSTRUCTION AND BUILDING MATERIALS (2022)

添加到收藏夹

Article Engineering, Environmental

Green conversion of hazardous red mud into diagnostic X-ray shielding tiles

Varsha Agrawal et al.

Summary: The study successfully converted iron-rich red mud into diagnostic X-ray shielding tiles by adding barium sulfate and binders, demonstrating sufficient impact strength and flexural strength suitable for wall applications. The red mud tiles were found to possess attenuation equivalent to lead at certain x-ray voltages, with minimal leaching of heavy elements, making them a safer alternative to toxic lead sheets for protecting against radiation hazards in medical settings.

JOURNAL OF HAZARDOUS MATERIALS (2022)

添加到收藏夹

Review Engineering, Environmental

Artificial alkali-activated aggregates developed from wastes and by-products: A state-of-the-art review

Lan-Ping Qian et al.

Summary: This article provides a comprehensive review of the manufacturing process and engineering properties of two types of artificial aggregates, as well as their applications in concrete and future development prospects and challenges.

RESOURCES CONSERVATION AND RECYCLING (2022)

添加到收藏夹

Article Construction & Building Technology

Physical properties, strength, and impurities stability of phosphogypsum-based cold-bonded aggregates

Chao Ding et al.

Summary: Novel recycling of phosphogypsum through granulation technology to produce phosphogypsum-based cold-bonded aggregates (PCBAs) is a potential strategy. The study found that increasing phosphogypsum content in the PCBAs resulted in decreased physical properties and mechanical strength, increased water absorption, and increased proportion of harmful pores. Leaching tests showed that the concentration of phosphorus and heavy metals in the PCBAs was reduced compared to the original phosphogypsum. The study concluded that PCBAs with phosphogypsum content up to 80% are qualified lightweight aggregates (LWAs) for concrete.

CONSTRUCTION AND BUILDING MATERIALS (2022)

添加到收藏夹

Article Construction & Building Technology

Effects of red mud on workability and mechanical properties of autoclaved aerated concrete (AAC)

Yufeng Song et al.

Summary: Red mud poses a severe threat to the environment and needs to be properly disposed of. When using red mud in autoclave aerated concrete (AAC), its low activity and small particle size negatively impact the workability and strength of AAC. Additionally, a higher amount of red mud results in worse pore structure and excessive content of tobermorite, leading to reduced strength. The optimal ratio of red mud to replace fly ash in AAC is 22.5%, and the overall performance of AAC with red mud can be greatly improved by using polycarboxylic acid or adjusting the water-solid ratio, meeting the standard requirements.

JOURNAL OF BUILDING ENGINEERING (2022)

添加到收藏夹

Article Construction & Building Technology

Clarifying and quantifying the immobilization capacity of cement pastes on heavy metals

Dengquan Wang et al.

Summary: This study investigated the binding behaviors of heavy metals in cement pastes and established a thermodynamic model to quantify the immobilization capacity of cement pastes. The results divided the heavy metals into three categories and provided a basis for the environmental assessment of heavy metal leaching from concrete.

CEMENT AND CONCRETE RESEARCH (2022)

添加到收藏夹

Article Construction & Building Technology

Pozzolanic activity and environmental risk assessment of water-based drilling cuttings of shale gas

Chao-qiang Wang et al.

Summary: This study systematically evaluated the application potential of water-based drilling cuttings (WDC) as cementitious materials for building material admixtures. The physical and chemical properties of WDC were studied, and the environmental and human health risks of heavy metals in WDC were assessed. The results showed that WDC exhibited certain pozzolanic activity and could reduce harmful holes in the system. In addition, the study proposed resource utilization directions and environmental safety control measures for WDC.

CONSTRUCTION AND BUILDING MATERIALS (2022)

添加到收藏夹

Article Engineering, Environmental

An environmental-friendly method for recovery of soluble sodium and harmless utilization of red mud: Solidification, separation, and mechanism

Xi Lan et al.

Summary: In this study, an environmental-friendly method was proposed for the recovery and harmless utilization of soluble sodium in red mud. The soluble sodium was selectively solidified and efficiently recovered from red mud, minimizing its high alkalinity. The solidification mechanism of sodium in anorthite and melilite was confirmed, providing a theoretical basis for minimizing alkalinity and making red mud harmless.

RESOURCES CONSERVATION AND RECYCLING (2022)

添加到收藏夹

Article Environmental Sciences

Recycling of phosphogypsum and red mud in low carbon and green cementitious materials for vertical barrier

Xiao Huang et al.

Summary: This study investigated the effects of phosphogypsum and red mud on MASB slurry. The results showed that the addition of phosphogypsum significantly improved the mechanical strength and anti-permeability of the MASB slurry, while the introduction of red mud had a negative impact on its macroscopic properties. The combined addition of phosphogypsum and red mud had a synergistic effect on the hydration process and optimization of the pore structure.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

添加到收藏夹

Article Engineering, Environmental

Preparation of ultra-lightweight ceramsite from red mud and immobilization of hazardous elements

Jiannan Pei et al.

Summary: The sintering behavior and physical properties of ultra-lightweight ceramsite using red mud and waste sawdust were investigated. The results showed that red mud is a suitable material for producing ultra-lightweight ceramsite, and the introduction of waste sawdust enhances the expansion process. The bulk density of the ceramsite decreases first and then increases with the increase of red mud and sawdust content.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

添加到收藏夹

Article Engineering, Chemical

Investigation on the fabrication of lightweight aggregate with acid-leaching tailings of vanadium-bearing stone coal minerals and red mud

Chunguang Song et al.

Summary: The study shows that using red mud instead of clay to mix with ALTs can produce lightweight aggregates with excellent physical characteristics.

CHINESE JOURNAL OF CHEMICAL ENGINEERING (2021)

添加到收藏夹

Review Construction & Building Technology

Sustainable utilization of bauxite residue (Red Mud) as a road material in pavements: A critical review

Jizhe Zhang et al.

Summary: This paper reviews the recent research findings of utilizing red mud as a road material in pavement structures, focusing on road bases and asphalt mixtures. The incorporation of red mud in asphalt mastics can improve stiffness, while replacing limestone filler with red mud in asphalt mixtures has some positive mechanical effects. However, the addition of red mud may worsen moisture susceptibility and raveling resistance in asphalt mixtures and the long-term durability is still unclear.

CONSTRUCTION AND BUILDING MATERIALS (2021)

添加到收藏夹

Article Green & Sustainable Science & Technology

An environment-friendly pretreatment process of municipal solid waste incineration fl y ash to enhance the immobilization ef fi ciency by alkali-activated slag cement

Xinyuan Li et al.

Summary: This study proposed a new pretreatment process for MSWI fly ash, finding that water immersion treatment can enhance the immobilization efficiency of alkali-activated slag cement, avoiding potential side effects of other treatment methods. The pretreated solidified specimens showed improved volumetric stability and higher encapsulation rate, indicating the promising potential of this pretreatment process in increasing the immobilization efficiency of alkali-activated slag cement.

JOURNAL OF CLEANER PRODUCTION (2021)

添加到收藏夹

Article Construction & Building Technology

Alkali-activated artificial aggregates fabricated by red mud and fly ash: Performance and microstructure

Kaige Tian et al.

Summary: In this study, artificial aggregates were produced using red mud and fly ash as blended aluminosilicate precursors, and the mechanical properties, densities, internal structures, microstructure analysis, and product identification were characterized. The results indicated that the optimal artificial aggregates could be potential candidates for mortar and concrete preparation.

CONSTRUCTION AND BUILDING MATERIALS (2021)

添加到收藏夹

Review Engineering, Environmental

Applications of red mud as an environmental remediation material: A review

Mengfan Wang et al.

Summary: Red mud is an alkaline by-product from alumina plants, and various waste treatment methods utilizing red mud as an environmental remediation material have been developed. RM-ERMs can be used for purifying waste water, waste gas, and soil, providing an opportunity to improve the environment through purification technologies.

JOURNAL OF HAZARDOUS MATERIALS (2021)

添加到收藏夹

Article Engineering, Environmental

Synergistic effects of fly ash and hooked steel fibers on strength and durability properties of high strength recycled aggregate concrete

Babar Ali et al.

Summary: By incorporating steel fiber and fly ash in recycled concrete, the mechanical performance can be significantly improved. The synergistic effect of 15% fly ash and 1% steel fiber showed the best results in enhancing the flexural, splitting-tensile, and compressive strength of the concrete. Additionally, both fly ash and steel fiber were effective in improving the water resistance, chloride-ion penetration resistance, and acid attack resistance of the concrete.

RESOURCES CONSERVATION AND RECYCLING (2021)

添加到收藏夹

Article Green & Sustainable Science & Technology

Valorization of phosphogypsum as a road material: Stabilizing effect of fly ash and lime additives on strength and durability

Sarra Meskini et al.

Summary: This study investigates the stabilization of Moroccan phosphogypsum through neutralizing acidity and using mixtures of fly ash and lime for activation. Results show an increase in strength and durability with higher lime content and longer curing time. The mineralogy analysis highlights the formation of ettringite as the main hydration product responsible for strength development.

JOURNAL OF CLEANER PRODUCTION (2021)

添加到收藏夹

Review Engineering, Environmental

A Comprehensive Review on Recycled Aggregate and Recycled Aggregate Concrete

Bo Wang et al.

Summary: Using recycled aggregates from construction and demolition waste can help preserve natural resources, reduce landfill demand, and contribute to sustainable built environment. Recycled aggregate concrete properties include workability, physical and chemical properties, mechanical properties, and long-term performance.

RESOURCES CONSERVATION AND RECYCLING (2021)

添加到收藏夹

Review Green & Sustainable Science & Technology

Extraction of Valuable Elements from Red Mud with a Focus on Using Liquid Media-A Review

Dmitry Zinoveev et al.

Summary: Red mud, a by-product of alumina production, has large global storage and environmental risks. Sustainable approaches for comprehensive recycling of red mud are necessary due to its valuable elements. Various methods, such as hydrometallurgical and solvometallurgical, can be used for recovery of valuable components from red mud.

RECYCLING (2021)

添加到收藏夹

Article Engineering, Environmental

Strength Development of Geopolymer Composites Made from Red Mud-Fly Ash as a Subgrade Material in Road Construction

K. Sarath Chandra et al.

Summary: The study demonstrates that using geopolymer composites for road subgrade can reduce dependency on natural resources while exhibiting good mechanical properties and microstructural characteristics, meeting permissible limits for toxic elements.

JOURNAL OF HAZARDOUS TOXIC AND RADIOACTIVE WASTE (2021)

添加到收藏夹

Article Engineering, Chemical

Characterization and purification of waste phosphogypsum to make it suitable for use in the plaster and the cement industry

Yassine Ennaciri et al.

CHEMICAL ENGINEERING COMMUNICATIONS (2020)

添加到收藏夹

Article Green & Sustainable Science & Technology

Effect of different gypsums on the workability and mechanical properties of red mud-slag based grouting materials

Zhaofeng Li et al.

JOURNAL OF CLEANER PRODUCTION (2020)

添加到收藏夹

Article Engineering, Environmental

Recovery of metals from municipal solid waste incineration fly ash and red mud via a co-reduction process

Chao Geng et al.

RESOURCES CONSERVATION AND RECYCLING (2020)

添加到收藏夹

Article Engineering, Environmental

Removal of vanadium from aqueous solution using a red mud modified saw dust biochar

Bashir Ghanim et al.

JOURNAL OF WATER PROCESS ENGINEERING (2020)

添加到收藏夹

Article Construction & Building Technology

Mechanism of calcination modification of phosphogypsum and its effect on the hydration properties of phosphogypsum-based supersulfated cement

Shuhua Liu et al.

CONSTRUCTION AND BUILDING MATERIALS (2020)

添加到收藏夹

Article Construction & Building Technology

Low-Energy Consumption Preparation of Fine Waterproof Cementitious Material with High-Volume Phosphogypsum

Wenda Lu et al.

JOURNAL OF MATERIALS IN CIVIL ENGINEERING (2020)

添加到收藏夹

Article Construction & Building Technology

Composite plates utilizing dealkalized red mud, acid leaching slag and dealkalized red mud-fly ash: Preparation and performance comparison

Xinke Wang et al.

CONSTRUCTION AND BUILDING MATERIALS (2020)

添加到收藏夹

Article Construction & Building Technology

Alkali-activated grouts based on slag-fly ash mixtures: From early-age characterization to long-term phase composition

Abdelilah Aboulayt et al.

CONSTRUCTION AND BUILDING MATERIALS (2020)

添加到收藏夹

Review Engineering, Environmental

Utilization of red mud in road base and subgrade materials: A review

Emile Mukiza et al.

RESOURCES CONSERVATION AND RECYCLING (2019)

添加到收藏夹

Review Engineering, Environmental

The composition, recycling and utilisation of Bayer red mud

M. A. Khairul et al.

RESOURCES CONSERVATION AND RECYCLING (2019)

添加到收藏夹

Article Energy & Fuels

Red-mud geopolymer composite encapsulated phase change material for thermal comfort in built-sector

Lukmon Owolabi Afolabi et al.

SOLAR ENERGY (2019)

添加到收藏夹

Article Construction & Building Technology

Influence of low calcium fly ash on compressive strength and hydration product of low energy super sulfated cement paste

Hoang-Anh Nguyen et al.

CEMENT & CONCRETE COMPOSITES (2019)

添加到收藏夹

Article Construction & Building Technology

Alkali-activated binders based on ground granulated blast furnace slag and phosphogypsum

Katrijn Gijbels et al.

CONSTRUCTION AND BUILDING MATERIALS (2019)

添加到收藏夹

Article Construction & Building Technology

Preparation and characterization of a red mud-based road base material: Strength formation mechanism and leaching characteristics

Emile Mukiza et al.

CONSTRUCTION AND BUILDING MATERIALS (2019)

添加到收藏夹

Article Green & Sustainable Science & Technology

Preparation of high porosity bricks by utilizing red mud and mine tailing

Youngjae Kim et al.

JOURNAL OF CLEANER PRODUCTION (2019)

添加到收藏夹

Proceedings Paper Green & Sustainable Science & Technology

Chemical treatment of phosphogypsum and its potential application for building and construction

T. P. Mashifana

2ND INTERNATIONAL CONFERENCE ON SUSTAINABLE MATERIALS PROCESSING AND MANUFACTURING (SMPM 2019) (2019)

添加到收藏夹

Article Materials Science, Ceramics

Effect of SiO2 and Al2O3 on characteristics of lightweight aggregate made from sewage sludge and river sediment

Mingwei Liu et al.

CERAMICS INTERNATIONAL (2018)

添加到收藏夹

Article Construction & Building Technology

A laboratory-scale experimental investigation on the reuse of a modified red mud in ceramic materials production

Cyril Scribot et al.

CONSTRUCTION AND BUILDING MATERIALS (2018)

添加到收藏夹

Article Engineering, Geological

Biopolymer amendment for mitigating dispersive characteristics of red mud waste

N. G. Reddy et al.

GEOTECHNIQUE LETTERS (2018)

添加到收藏夹

Article Construction & Building Technology

Strength characteristics of fly ash stabilized with lime and modified with phosphogypsum

Rakesh Kumar Dutta et al.

JOURNAL OF BUILDING ENGINEERING (2017)

添加到收藏夹

Proceedings Paper Engineering, Environmental

Hardening performance of phosphogypsum-slag-based material

Xuquan Huang et al.

SELECTED PROCEEDINGS OF THE TENTH INTERNATIONAL CONFERENCE ON WASTE MANAGEMENT AND TECHNOLOGY (2016)

添加到收藏夹

Article Materials Science, Ceramics

One-Part Geopolymers Based on Thermally Treated Red Mud/NaOH Blends

Xinyuan Ke et al.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2015)

添加到收藏夹

Article Construction & Building Technology

Effect of activators, admixtures and temperature on the early hydration performance of desulfurization ash

Chao-qiang Wang et al.

CONSTRUCTION AND BUILDING MATERIALS (2014)

添加到收藏夹

Article Construction & Building Technology

A novel Two-step Hydration Process of preparing cement-free non-fired bricks from waste phosphogypsum

Jun Zhou et al.

CONSTRUCTION AND BUILDING MATERIALS (2014)

添加到收藏夹

Article Engineering, Environmental

Life cycle assessment of seawater neutralised red mud for treatment of acid mine drainage

D. Tuazon et al.

RESOURCES CONSERVATION AND RECYCLING (2008)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.