Potential of artificial soil preparation for vegetation restoration using red mud and phosphogypsum

The Science of The Total Environment, Год журнала: 2024, Номер 941, С. 173553 - 173553

Опубликована: Май 31, 2024

Язык: Английский

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Marble Powder as a Soil Stabilizer: An Experimental Investigation of the Geotechnical Properties and Unconfined Compressive Strength Analysis

Materials, Год журнала: 2024, Номер 17(5), С. 1208 - 1208

Опубликована: Март 5, 2024

Fine-grained soils present engineering challenges. Stabilization with marble powder has shown promise for improving properties. Understanding the temporal evolution of Unconfined Compressive Strength (UCS) and geotechnical properties in stabilized could aid strength assessment. This study investigates stabilization fine-grained clayey using waste as an alternative binder. Laboratory experiments were conducted to evaluate soil-marble mixtures, including Atterberg's limits, compaction characteristics, California Bearing Ratio (CBR), Indirect Tensile (ITS), (UCS). The effects various factors, such curing time, molding water content, composition ratios, on UCS, analyzed Exploratory Data Analysis (EDA) techniques, histograms, box plots, statistical modeling. results show that CBR increased from 10.43 22.94% unsoaked 4.68 12.46% soaked conditions 60% powder, ITS rose 100 208 kN/m2 60-75% UCS 170 661 after 28 days curing, content (optimum at 22.5%), ratios powder). Complex modeling yielded R2 (0.954) RMSE (29.82 kN/m2) between predicted experimental values. demonstrates potential utilizing a sustainable cost-effective binder soil stabilization, transforming weak into viable construction materials.

Язык: Английский

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Gypsum-Enhanced Red Mud Composites: A Study on Strength, Durability, and Leaching Characteristics

Buildings, Год журнала: 2024, Номер 14(7), С. 1979 - 1979

Опубликована: Июль 1, 2024

The strong alkalinity of red mud and the heavy metals it contains pose a serious threat to environment. This study investigated possibility applying as solid waste material in road construction mitigate problem accumulation. Red was modified using titanium gypsum phosphogypsum curing agents. effects varying types mixing ratios on mechanical properties metal leaching resulting mud-based materials were assessed percussion tests, unconfined compressive strength measurements, scanning electron microscopy (SEM), continuous tests. results showed that optimal moisture content for gypsum–cement-stabilized (RTC) exceeds phosphogypsum–cement-stabilized (RPC), with RTC exhibiting lower maximum dry density compared RPC. When admixture within 10%, RPC higher than at same time. reticulation RPC-10 denser. cumulative releases from both permissible limits Class III groundwater discharge standards. Based comprehensive test results, is identified superior material, an mix ratio mud/phosphogypsum/cement 87:5:8.

Язык: Английский

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Synergy between Fenton reagent and solid waste-based solidifying agents during the solidification/stabilization of lead(II) and arsenic(III) contaminated soils

Journal of Environmental Management, Год журнала: 2024, Номер 370, С. 122601 - 122601

Опубликована: Сен. 20, 2024

Язык: Английский

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Development of insulating backfill materials produced from the ternary mixtures of red mud, fly ash and preformed foam

Transportation Geotechnics, Год журнала: 2024, Номер 48, С. 101339 - 101339

Опубликована: Авг. 19, 2024

Many public utility lines to transport power, water, natural gas, sewer, and communication are placed beneath trafficable areas. However, insufficient or inadequate backfill induces sudden subsidence, damage, pothole on the road. This study aims develop lightweight controlled low-strength materials (CLSM) with low thermal conductivity using ternary mixtures of red mud replace aggregate sand, high carbon fly ash, preformed foam. Changes in flow consistency, air void characteristics, bulk unit weight, unconfined compressive strength (UCS), (k) tested varying contents were investigated as a function foam volume ratio (FVR). The results demonstrate that UCS k decreased increasing FVR due decrease greater but smaller was observed at given content because inclusion CLSM mix design helps improve stability bubbles achieve uniform distribution voids. In addition, can act NaOH supplier, leading developed material had additional gain from alkali activation. Thus, insulating showed 43 % while maintaining similar non-foam without mud.

Язык: Английский

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Exploring dealkalization and Cr removal from red mud through freeze-thaw and acid washing: an experimental approach

Research in Cold and Arid Regions, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Язык: Английский

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Study on freeze-thaw resistance of cellulose modified loess based on complex stress state

Construction and Building Materials, Год журнала: 2024, Номер 458, С. 139659 - 139659

Опубликована: Дек. 21, 2024

Язык: Английский

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