Cement and Concrete Composites, Год журнала: 2024, Номер unknown, С. 105763 - 105763
Опубликована: Сен. 1, 2024
Язык: Английский
Construction and Building Materials, Год журнала: 2024, Номер 458, С. 139628 - 139628
Опубликована: Дек. 19, 2024
Язык: Английский
Процитировано
4
Revista IBRACON de Estruturas e Materiais, Год журнала: 2025, Номер 18(1)
Опубликована: Янв. 1, 2025
Abstract Geopolymer cement stands as an alternative to Portland reduce the impacts associated with its production. This material is also affected by ions that can damage mechanical properties and durability. Therefore, this research aims evaluate metakaolin geopolymer concretes attacked sulfates, both sodium magnesium. The samples were made varying oxide (Na2O) content in activators on metakaolin, curing type, water/metakaolin ratio. specimens exposed sulfate, magnesium reference solutions (water) for 10 weeks. analyses performed using water absorption (by capillarity immersion) compressive strength tests. results showed sulfate attack was more aggressive than concretes, 91.67% of submitted degraded during absorptions tests while 8.33% sulfate. A 22% achieved greater resistance carbonation did not improve mixtures.
Язык: Английский
Процитировано
0
Journal of Material Cycles and Waste Management, Год журнала: 2025, Номер unknown
Опубликована: Фев. 28, 2025
Язык: Английский
Процитировано
0
Case Studies in Construction Materials, Год журнала: 2025, Номер unknown, С. e04476 - e04476
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
The Science of The Total Environment, Год журнала: 2025, Номер 976, С. 179279 - 179279
Опубликована: Апрель 8, 2025
Язык: Английский
Процитировано
0
Construction and Building Materials, Год журнала: 2025, Номер 475, С. 141167 - 141167
Опубликована: Апрель 11, 2025
Язык: Английский
Процитировано
0
Sustainability, Год журнала: 2024, Номер 16(2), С. 701 - 701
Опубликована: Янв. 12, 2024
Owing to the ongoing accumulation of industrial by-products, management and disposal waste have emerged as a significant issue. Employing these wastes an alternative replace cement holds potential promising solution for conserving energy reducing CO2 emissions. In this study, pig beef bone powder were used replacements in concrete, mechanical properties studied. Bone powders prepared from random bones collected local slaughterhouses, butchers, restaurants. The (PBP) (BBP) by direct fire contact, oven-calcined 4 h at 300 °C, crushed, sieved size 0.4 2 mm. A concrete mix design was formulated target compressive strength 21 MPa 28 days curing. This included three different levels replacement with each type (10%, 15%, 20% mass). These mixes then evaluated compared control without any (PB-0). study via flexural testing. results showed that workability mixtures decreased increase content. functions pozzolanic substance, engaging chemical reaction calcium hydroxide produce compounds exhibit cement-like properties; however, content worsened properties. most obtained 10% percentage BBP PBP, obtaining strengths 21.15 22.78 MPa, respectively. are both above strength, PBP even exceeding PB-0 (21.75 MPa). good agreement standard values allow use cement, becoming sustainable exploitation quarry materials and, turn, problem contamination biological meat industry.
Язык: Английский
Процитировано
3
Ceramics International, Год журнала: 2024, Номер 50(13), С. 24479 - 24486
Опубликована: Апрель 16, 2024
This study provides experimental insights into the optimization of alkali-activated materials (AAMs) carried out in situ at restoration site Monreale Cathedral, Italy. Volcanic ash from Mt. Etna volcano (Italy) was used as a precursor to obtain AAMs. Standard and modified pastes with small amount slaked lime paste were compared terms setting time, rheology, mineralogy, chemical morphology, mechanical performance. The exhibited faster superior strength rheological properties. Mineralogically, no difference observed between two for added very close detectable limit (<2 wt%). Moreover, its addition causes slight differences morphology gel without changing composition Na2O-CaO-Al2O3-SiO2-H2O ((N,C)-A-S-H)) type. results obtained may be useful development building (especially purposes) where appropriate physico-mechanical performance is required.
Язык: Английский
Процитировано
3
Separation and Purification Technology, Год журнала: 2024, Номер 353, С. 128312 - 128312
Опубликована: Июнь 13, 2024
Язык: Английский
Процитировано
3
Geotechnical and Geological Engineering, Год журнала: 2024, Номер 42(7), С. 6131 - 6146
Опубликована: Июль 30, 2024
Abstract This research investigates the potential of using nanoparticles, Poly Aluminum Silicate and Calcium Silicate, industrial by-products, Recycled Glass Powder (RGP) Ground Granulated Ballast Furnace Slag (GGBS) to enhance durability strength a sandy soil, particularly in wet or saturated conditions where water table is close building foundations. The study aims determine optimal content concentration additives assess their influence on compressive failure strain. dry alkaline solutions were determined. Uniaxial tests conducted various stabilized geopolymers, considering factors such as activator type, nanoparticle type percentage, degree saturation. Scanning electron microscopy images taken analyzed verify geomechanical testing outcomes. Mixtures with nanomaterials exhibited greater than untreated some exhibiting up tenfold increase. GGBS-based samples displayed twofold increase nanomaterial addition, while RGP-based experienced reduced strength. However, both addressed concerns conditions. addition 2% mixtures led significant gains, showing 20% after indicated nanoparticles by-products resolving major concern regarding geopolymers which lack These findings have implications for eco-friendly geoconstruction materials practices.
Язык: Английский
Процитировано
3