Study and valorization of a new bituminous concrete based on natural dune sand for hot and arid environments DOI Creative Commons
Ahmed Berriache, Mohamed Bensoula,

Mohamed Zaoui

et al.

The Journal of Engineering and Exact Sciences, Journal Year: 2023, Volume and Issue: 9(12), P. 17791 - 17791

Published: Dec. 31, 2023

The trans-desert road network is exposed to enormous degradation of asphalt concrete pavements due the high temperatures these arid regions, which considerably accelerate ageing. Common bituminous mixes generally use quarry sand fillers, proportions are poorly controlled diversity rock deposits and their manufacturing conditions. This article responds this problem by proposing dune as a source filler grinding it then introducing into pure bitumen obtain bitumen-filler mix. In paper, two types analysis were carried out, one thermal other mechanical study influence substitution in concrete. analysis, evaluates stiffening power (?TBA) three fillers incorporated bitumen, namely sand, standardized filler. results analyses reveal that at normative percentage 57% with 43% normalized comply established standards (between 8 16°C), unlike filler, does not meet standards. out on revealed an improvement performance when was used, MARSHALL stability values indicating average increase from 3.9 4.9, better resistance water greater than 99% ratio for DURIEZ test well above 75% threshold. These offer potential optimize incorporating thereby enabling Saharan roads be built more quickly, lower cost and, all, extend lifespan, making positive contribution development infrastructure hot, environments.

Language: Английский

Life Cycle Assessment of River Sand and Aggregates Alternatives in Concrete DOI Open Access
Lê Hùng Anh, Florin‐Constantin Mihai, A. P. Belousova

et al.

Materials, Journal Year: 2023, Volume and Issue: 16(5), P. 2064 - 2064

Published: March 2, 2023

Urbanization processes in Asia are still ongoing; thus, aggregate demand is expected to increase following years. Even though construction and demolition waste a source for secondary building materials industrialized countries, it not yet an alternative material Vietnam as the urbanization process ongoing. Thus, there need river sand aggregates alternatives concrete, namely manufactured (m-sand) from primary solid rock materials. The focus present study was on m-sand sand, different ashes cement concrete. investigations comprised concrete lab tests according formulations of strength class C 25/30 accordance with DIN EN 206, followed by lifecycle assessment order identify environmental impact alternatives. In total 84 samples were investigated, consisting 3 reference samples, 18 substitutes, 45 substitutes. This kind holistic investigation approach comprising accompanying LCA first Vietnam, even Asia, represents substantial added value future policy development cope resource scarcity. results show that exception metamorphic rocks, all m-sands meet requirements quality terms replacement, mixes showed higher percentage ash reduces compressive strength. values up 10% coal filter or rice husk equivalent C25/30 standard formulation. Higher contents 30% lead reduction quality. study’s highlighted better footprints across categories substitution comparison use analysis component holds highest footprint. provides significant advantage.

Language: Английский

Citations

16
Comparative environmental and economic life cycle assessment of phytoremediation of dredged sediment using Arundo Donax, integrated with biomass to bioenergy valorization chain DOI Creative Commons
Tara Soleimani,

Flo Sordes,

Isabelle Técher

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 903, P. 166160 - 166160

Published: Aug. 16, 2023

Language: Английский

Citations

15
Management of dredged marine sediments in Southern France: main keys to large-scale beneficial re-use DOI Creative Commons
Garry Dorleon, Sylvain Rigaud, Isabelle Técher

et al.

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: unknown

Published: April 15, 2024

Abstract Fifty million cubic meters of marine sediments are dredged each year in France order to maintain harbor activities and sustain the economy littoral territories. Because anthropogenic around harbors, can contain significant amounts chemical organic pollutants whose behavior during dredging must be addressed avoid releasing risks for humans environment. French regulations come govern management sediments, considering them “safe” possible dumped at sea or “contaminated” needed treated on land as waste. In recent years, new constraints have been pushed toward land. This is, however, challenging few channels proposed reuse elimination appears economically environmentally unsustainable. study provides an overview technical regulatory aspects related sediment aims identify discuss limits their valorization. Dredged mainly composed particles with heterogeneous grain size, some being known many applications such building materials growing media. However, several reasons put forward explain why these not reused when extracted from sediments. Several technical, socio-economic, obstacles low demand stimulated by government incentives a good framework. National could help streamline removing “waste” status creating regulated market sediment.

Language: Английский

Citations

5
Properties of cement-based materials made with sediment and calcined sediment: A critical review DOI

Can Lin,

Zengfeng Zhao,

Jie-Lin Tao

et al.

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112609 - 112609

Published: April 1, 2025

Language: Английский

Citations

0
Optimal Compressive Strength of RHA Ultra-High-Performance Lightweight Concrete (UHPLC) and Its Environmental Performance Using Life Cycle Assessment DOI Open Access
Kennedy C. Onyelowe, Ahmed M. Ebid,

Hisham A. Mahdi

et al.

Civil Engineering Journal, Journal Year: 2022, Volume and Issue: 8(11), P. 2391 - 2410

Published: Nov. 1, 2022

Frequent laboratory needs during the production of concrete for infrastructure development purposes are a factor serious concern sustainable development. In order to overcome this trend, an intelligent forecast properties based on multiple data points collected from various mixes produced and cured under different conditions is adopted. It equally important consider impact components in attempt take care environmental risks involved production. work, 192 ultra-high-performance lightweight (UHPLC) were literature representing periods conditions. These mix proportions constitute measured variables, which curing age (A), cement content (C), fine aggregate (FAg), plasticizer (PL), rice husk ash (RHA). The studied property was unconfined compressive strength (Fc). This exercise necessary reduce dependence examinations by proposing equations. First, life cycle assessment evaluation conducted ash-based UHPLC, results show that C-783 (87 kg/m3 RHA) has highest score performance evaluation, while C-300 (75 with indices 289.85 kg CO2eq. Global warming potential (GWP), 0.66 SO2eq. Terrestrial acidification 5.77 m3 water consumption selected be optimal choice due its good profile LCA Fc associated mix. Second, predictions using six algorithms (ANN-BP), (ANN-GRG), (ANN-GA), (GP), (EPR), (GMDH-Combi). (ANN-BP) R; 0.989, R2; 0.979, mean square error (MSE); 2252.55, root squared (RMSE); 42.46 MPa absolute percentage (MAPE); 4.95% outclassed other five techniques as decisive model. However, it also compared well previous models, had used gene expression programming (GEP) random forest regression (RFR) achieved R2of 0.96 0.91, respectively. Doi: 10.28991/CEJ-2022-08-11-03 Full Text: PDF

Language: Английский

Citations

15
Mineral waste valorization in road subgrade construction: Algerian case study based on technical and environmental features DOI Creative Commons

Selma Bellara,

Walid Maherzi, Salim Mezazigh

et al.

Case Studies in Construction Materials, Journal Year: 2023, Volume and Issue: 20, P. e02764 - e02764

Published: Dec. 5, 2023

This study has focused on the dam sediments and marble waste reuse as subgrade materials for road construction, with overarching goals of reducing greenhouse gas emissions conserving natural resources. Different mixtures were prepared based waste, treated hydraulic binders. The first mixture consisted solely raw sediment, while second combined 50% dredged waste. Additionally, this was 1% aerial hydrated lime binder to enhance its properties. experimental assessing both short-term long-term mechanical properties mixtures. Results highlighted that containing highly suitable construction. These satisfied criteria trafficability (UCS), wetting resistance (UCSI), freezing (ITS), overall strength. Furthermore, a comprehensive analysis mixtures' microstructure their environmental impact conducted. A significant relationship observed between CaO/SiO2 ratio mix. research contributes growing body knowledge regarding sustainable construction practices by highlighting viability utilizing valuable resources in showed recovering 20% sediment replace would reduce energy consumption at least 40% 28% respectively.

Language: Английский

Citations

9
Methodological approach based on life cycle assessment for upcycling leftover concrete into dry industrial mortars DOI Creative Commons

Christelle Tribout,

Gilles Escadeillas,

Maher Hodroj

et al.

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 86, P. 108868 - 108868

Published: Feb. 25, 2024

Language: Английский

Citations

2
Study on Freeze–Thaw Resistance of Cement Concrete with Manufactured Sand Based on BP Neural Network DOI Creative Commons
Hengyu Wu, Qiju Gao

Buildings, Journal Year: 2024, Volume and Issue: 14(9), P. 2952 - 2952

Published: Sept. 19, 2024

In this study, experiments were conducted on the freeze–thaw performance of manufactured sand cement concrete with different ratios and fly ash contents. The research found that during 200 cycles, as content increased, exhibited a higher mass loss rate decline in relative dynamic modulus elasticity. This was due to lower activity SiO2 Al2O3 ash, which reduced hydration products. Incorporating an optimal amount can increase density concrete, thereby improving its resistance cycles. However, when high, large surface area could interfere process reduce strength, diminishing concrete. Given studying is time-consuming influenced by many factors, prediction model based BP (back propagation) neural network developed estimate elasticity following After validation, be highly reliable serve foundation for mix design decisions

Language: Английский

Citations

2
An approach for modular environmental life cycle assessment of effluent treatment: Configuration of effluent treatment modules based on decision tree tailored to best available techniques DOI Creative Commons
Tara Soleimani,

David Lopez Ferber,

Guillaume Junqua

et al.

Environmental Impact Assessment Review, Journal Year: 2024, Volume and Issue: 112, P. 107782 - 107782

Published: Dec. 18, 2024

Language: Английский

Citations

2
Valorization of uncontaminated dredged marine sediment through sand substitution in marine grade concrete DOI
Mahmoud Hayek, Tara Soleimani, Marie Salgues

et al.

European Journal of Environmental and Civil engineering, Journal Year: 2023, Volume and Issue: 27(13), P. 4008 - 4025

Published: Jan. 19, 2023

Marine sediment disposal is an important economic and environmental issue worldwide. In order to minimize these discharges optimize resources through a circular economy approach, this study discusses the potential use of fine marine sediments without treatments as sand substitute in concrete class (XS2, C30/37). The Dreux-Gorisse method was applied find formulation containing 10, 20, 30, 40 50% by weight. results show that XS2 C30/37 with water binder ratio 0.55 could be designed 10% replacement content significantly affecting properties. However, optimization mix design shows C30/37) 30% durability estimated lifetime structure.

Language: Английский

Citations

5