Hans Journal of Civil Engineering, Год журнала: 2024, Номер 13(12), С. 2199 - 2206
Опубликована: Янв. 1, 2024
Язык: Английский
Hans Journal of Civil Engineering, Год журнала: 2024, Номер 13(12), С. 2199 - 2206
Опубликована: Янв. 1, 2024
Язык: Английский
Engineering Structures, Год журнала: 2025, Номер 330, С. 119910 - 119910
Опубликована: Фев. 16, 2025
Язык: Английский
Процитировано
3Cement and Concrete Composites, Год журнала: 2025, Номер unknown, С. 106046 - 106046
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
2Results in Engineering, Год журнала: 2025, Номер unknown, С. 104654 - 104654
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
1Construction and Building Materials, Год журнала: 2024, Номер 444, С. 137860 - 137860
Опубликована: Авг. 13, 2024
Язык: Английский
Процитировано
6Developments 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
Процитировано
4Construction and Building Materials, Год журнала: 2025, Номер 463, С. 140110 - 140110
Опубликована: Янв. 24, 2025
Язык: Английский
Процитировано
0Buildings, 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
Процитировано
0Journal of Building Engineering, Год журнала: 2025, Номер unknown, С. 112792 - 112792
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0Construction and Building Materials, Год журнала: 2025, Номер 482, С. 141601 - 141601
Опубликована: Май 8, 2025
Язык: Английский
Процитировано
0Scientific 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
Процитировано
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