BFRP bars reinforced geopolymer-based coral aggregate concrete beams with sustainable and high seawater erosion resistance: Flexural durability, economic, and ecological analysis

Engineering Structures, Год журнала: 2025, Номер 330, С. 119910 - 119910

Опубликована: Фев. 16, 2025

Язык: Английский

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Synthesis of geopolymer composites utilizing PVA-modified basalt fibers and foundry waste: fundamental properties, cracking resistance and fracture toughness

Cement and Concrete Composites, Год журнала: 2025, Номер unknown, С. 106046 - 106046

Опубликована: Март 1, 2025

Язык: Английский

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Concrete Resilience Under the Impact of Water Forces: A Review of Abrasion Resistance in Hydraulic Structures

Results in Engineering, Год журнала: 2025, Номер unknown, С. 104654 - 104654

Опубликована: Март 1, 2025

Язык: Английский

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Effect of recycled concrete powder-cement composite coating modification on the properties of recycled concrete aggregate and its concrete

Construction and Building Materials, Год журнала: 2024, Номер 444, С. 137860 - 137860

Опубликована: Авг. 13, 2024

Язык: Английский

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Sustainability and durability performance evaluation of geopolymer concrete with industrial effluent as alternative to conventional river sand

Developments in the Built Environment, Год журнала: 2024, Номер 19, С. 100517 - 100517

Опубликована: Авг. 8, 2024

Due to infrastructural development activities, the need for construction materials increases, because of which most naturally available natural resources are over exploited and cost increased. Therefore, present study focuses on use industrial by-products concrete examines physical, mechanical, durability sustainable performances. Fly ash (FA) ground granulated blast furnace slag (GGBS) were employed as binder medium effluent sodium silicate waste was used replace conventional river sand in geopolymer (GPC). GGBS source material production increase polymerization reaction process further, developed cured ambient condition temperature range 27 ± 2 °C, laboratory. The concentration hydroxide (NaOH) 12M, alkaline solution ratio 1:1.5. During factory, residue left at bottom boiling hopper dumped open land. GPC gains its strength based alumina silica activator solution, therefore, this identified potential alternative sand. with without subjected two types acid (Sulfuric (H2SO4) Hydrochloric (HCl)) further examine performance under marine condition, salt solutions, namely, magnesium sulfate (MgSO4) Sodium Chloride (NaCl) used, acids is 2% 3.5%. Increase proportion from 0% 100% decreases slump value concrete. Contrastingly, increasing increases after 28-d room curing. To acidic conditions, average three specimens duration exposure considered starts continues till 360-d. After exposing environment, mass loss, loss surface modification examined; found be 1.5–3% 35%–45%. In case exposure, seen 1–2% whereas strength, 30%–42%, respectively. Further, sustainability aspects effluents examined detail; focusing economic concrete, carbon emission energy demand during

Язык: Английский

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Experimental study on the performance of basalt fiber combined with cement-based material solidified shield waste mud under the coupled effects of acid corrosion and dry-wet cycles

Construction and Building Materials, Год журнала: 2025, Номер 463, С. 140110 - 140110

Опубликована: Янв. 24, 2025

Язык: Английский

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Assessment of Precast Concrete Deterioration in Marine Environments Using Non-Destructive Methods

Buildings, Год журнала: 2025, Номер 15(6), С. 926 - 926

Опубликована: Март 15, 2025

Concrete structures in marine environments face significant degradation due to reinforcement corrosion caused by chloride ingress and sulfate attack. Poor construction quality, inadequate standards, suboptimal design can further accelerate deterioration. Non-destructive testing (NDT) has proven valuable for durability assessment, yet its application remains limited the complex microstructural characteristics of concrete. This study establishes a comprehensive procedure evaluating precast concrete using multiple characterization techniques. Two elements with different cement types, CEM II A-L 42.5R I 42.5 R/SR, were analyzed through compressive strength tests, open porosity measurements, mercury intrusion porosimetry (MIP), ultrasonic wave transmission, scanning electron microscopy (SEM). The results indicate that R/SR exhibits superior lower porosity, making it more durable suitable load-bearing applications. Higher pulse velocity (UPV) confirms resilience. In contrast, shows mechanical performance greater susceptibility marine-induced degradation. Over time, pore size distribution shifts, potentially compromising integrity. SEM analysis reveals gypsum brucite formation degraded regions, demonstrating changes seawater exposure. A strong negative correlation between UPV underscores detrimental effect increased on material density structural stability. highlights effectiveness as reliable NDT techniques assessing trends suggests serves an early indicator loss, enabling timely maintenance interventions. These findings provide insights into selection enhanced emphasize role long-term health monitoring.

Язык: Английский

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Study on Enhancing Recycled Aggregate Concrete Using High Belite Sulfoaluminate Cement

Journal of Building Engineering, Год журнала: 2025, Номер unknown, С. 112792 - 112792

Опубликована: Апрель 1, 2025

Язык: Английский

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Progress of lightweight and robust ceramsite from solid waste: Preparation, properties and applications

Construction and Building Materials, Год журнала: 2025, Номер 482, С. 141601 - 141601

Опубликована: Май 8, 2025

Язык: Английский

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The addition of natural clay and industrial and agricultural waste on the performance of green and sustainable concrete

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Май 16, 2025

Cement production is a major contributor to global CO2 emissions, necessitating the development of sustainable alternatives such as fiber-reinforced concrete incorporating supplementary cementing materials (SCMs) and agricultural waste. This approach keeps environment safe by reducing consumption conventional raw for production. Incorporating SCMs in can potentially improve mechanical durability properties. research evaluated behavior mixtures using different proportions natural wheat straw fiber, bentonite, silica fume (SF). The fresh property was investigated workability test, properties were compressive strength split tensile strength. Bulk density, water absorption, sorptivity tests also performed investigate concrete. Scanning electron microscopy (SEM) conducted evaluate microstructure morphology developed mixtures. results revealed that slump value decreased with fibers (83-42 mm). ranged from 11 MPa 23 MPa, increasing increased Bentonite SF dosages. Splitting 2.2 2.7 showing an increase dosages fibers. addition WSFR compromised strengths mixtures, however, ductility improved incorporation WSFR. SEM confirmed CSH gel formation containing bentonite SF. concrete, reduced its resistance acid. resulting address carbon emissions associated cement provide construction material.

Язык: Английский

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