Intelligent optimization of FAH concrete mix ratio design considering the carbon emission allocation principles of by-products and critical transportation distances

Journal of Cleaner Production, Год журнала: 2025, Номер unknown, С. 144656 - 144656

Опубликована: Янв. 1, 2025

Язык: Английский

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Preparation of artificial aggregates with high fly ash content through air curing and carbonation curing

Construction and Building Materials, Год журнала: 2025, Номер 461, С. 139874 - 139874

Опубликована: Янв. 1, 2025

Язык: Английский

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Strategies for Minimizing Environmental Impact in Construction: A Case Study of a Cementitious 3D Printed Lost Formwork for a Staircase

Materials, Год журнала: 2025, Номер 18(4), С. 825 - 825

Опубликована: Фев. 13, 2025

The construction industry faces significant challenges, including environmental sustainability, rising material costs, and a shortage of skilled labor. Digital fabrication technologies offer innovative solutions to address these issues by reducing raw consumption waste generation. Among these, 3D printing distinct advantages over traditional methods, particularly in handling complex geometries. However, the impact cement printed concrete, due its high rheological printability requirements, remains concern. This study introduces novel application permanent formwork winder staircase, assessed through an Environmental Life Cycle Assessment (LCA) from cradle gate. By comparing impacts various materials processes, this highlights comparative disadvantages conventional methods versus printing. LCA results reveal that production those using plywood formwork, exhibit higher impacts. In contrast, timber performs better than most mixtures terms Global Warming Potential (GWP), Acidification (AP), abiotic depletion potential (ADP). findings underscore additive manufacturing for sustainable construction, use low-clinker offering promising pathway towards footprint activities.

Язык: Английский

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Experimental and prediction analysis of separating blast furnace slag in the vibratory separator

Canadian Metallurgical Quarterly, Год журнала: 2025, Номер unknown, С. 1 - 12

Опубликована: Фев. 16, 2025

Язык: Английский

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High-Volume Fly Ash Concrete for Road Pavement: Integrated Laboratory and Field Study

Key engineering materials, Год журнала: 2025, Номер 1007, С. 109 - 114

Опубликована: Март 4, 2025

The current study presents the result of experimental works that determine differences in engineering properties between high-volume fly ash concrete (HVFC) laboratory and field as well economic environmental feathers HVFC. target application HVFC is for constructing level-4 pavement rural areas, thus standard design criteria 28-day compressive strength 41.3 MPa with equivalence flexural at least 4.5 surface abrasion below 0.6 g/cm 2 . mix formula was almost similar. However, a minor difference quantity each ingredient can be found due to its moisture (water content) adjustment. Additionally, this investigation conducts discusses comparative performance terms workability, cost-effectiveness, impacts. test results revealed mixtures exhibited good workability (18 ± cm), which suitable easy real construction. Importantly, specimens prepared collected from had values beyond 28 days. further developed later ages concrete. In addition, all demonstrated resistance, satisfying requirement practice. Generally, laboratory-HVFC slightly better than field-HVFC. As compared normal production, incorporating large amounts FA brings significant benefits cost reduction (by 25.3%) CO emissions 54.6%). Further, concentration primary heavy metals leached threshold Vietnamese standard, indicating eco-friendly sustainable HVFC, suggesting use

Язык: Английский

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Development of low carbon concrete with high cement replacement ratio by multi-response optimization

Cleaner Materials, Год журнала: 2025, Номер unknown, С. 100304 - 100304

Опубликована: Март 1, 2025

Язык: Английский

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Response surface optimization of CO2-mixing mineralization concrete: Balancing mechanical properties and carbon sequestration

Construction and Building Materials, Год журнала: 2025, Номер 471, С. 140648 - 140648

Опубликована: Март 11, 2025

Язык: Английский

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Compressive strength and flowability of high volume eco-binder high performance concrete: A physical-data dual drive

Structures, Год журнала: 2025, Номер 74, С. 108645 - 108645

Опубликована: Март 13, 2025

Язык: Английский

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Low-Carbon Slag Concrete Design Optimization Method Considering the Coupled Effects of Formwork Stripping, Strength Progress, and Carbonation Durability

Buildings, Год журнала: 2025, Номер 15(8), С. 1316 - 1316

Опубликована: Апрель 16, 2025

Partially substituting cement with slag is an efficient approach to lowering the carbon footprint of concrete. Earlier research on low-carbon concrete has primarily concentrated optimization material strength without considering coupled effects formwork stripping time, progress, and carbonation durability, which may lead risk steel reinforcement corrosion. To address this limitation, study introduces optimized design for that simultaneously accounts time durability. First, based test results, a prediction equation incorporates curing age, water-to-(cement+slag) mass ratio, slag-to-(cement+slag) ratio developed. As such, coefficients have clear physical meanings. Both increase coefficient exhibiting greater growth rate than cement. Second, evaluation concrete’s emissions per 1 MPa in reveals that, given adopting low high effectively reduces these emissions. Parameter analysis model increasing before onset depth. Furthermore, four scenarios are considered study: scenario C1 does not consider specified 30 at 28 days; C2 considers same C3 durability but requires 7 C4 also days. Through formulation constraints using genetic algorithm, appropriate mix proportions each obtained. Finally, results reveal when transitioning from C2, actual 28-day compressive rises 65.139 MPa; C3, slightly 30.122 C4, significantly 80.890 MPa. In summary, new particular, prolonging period plays crucial role optimizing mixtures.

Язык: Английский

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Assessment of radioactivity in concrete grades M300 and M400 with fly ash addition and dose evaluation using the CEN room model

Construction and Building Materials, Год журнала: 2025, Номер 477, С. 141350 - 141350

Опубликована: Апрель 19, 2025

Язык: Английский

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