Investigating experimentally the potency of divergent sodium hydroxide and sodium silicate molar proportions on silica fume and obsidian‐based geopolymer mortars

Structural Concrete, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Abstract The search for and development of new binders that can replace traditional Portland cement is vital importance from an environmental perspective. Geopolymers are one the most important solutions in this regard. composed various types containing sufficient Al Si sources activated with alkaline activators. In addition to their high mechanical durability features beside cement, they alternatives reducing carbon emissions. Although obsidian (OB) silica fume (SF), which waste materials, have resources geopolymers, there been very few studies on these materials. purpose study experimentally investigate properties geopolymer mortars OB‐based geopolymers different proportions SF substituted ranging 2.5 10 weight percent. sodium silicate (Na 2 SiO 3 ), hydroxide (NaOH) has also used as activator molar such 6, 8, 10, 12, 14 M. alkali activator/binder proportion was standardized 0.45 curing temperature 150°C. experimental research diverse mixing ratios consisted stages. first stage, effects (SH) a constant concentration 12 M were measured all mixtures. second SH (SS) activators characteristics performance studied. third tests carried out determine compressive strength (CS) water absorption, sorptivity, UPV mortars. addition, microstructural x‐ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscope‐EDS changes microstructure. peak CS 66.24 MPa acquired sample S1. substitution does not significant positive effect properties. However, absorption sorptivity. maximum improvement tendency increases direct rate. rate control S1 5.95%, decreased 4.33% S5 10% substitution. SEM images clearly showed mortar specimens had structures matrix, capillary cracks, microvoids, matrices contributed positively strengths. Based results study, manufactured OB be develop environmentally friendly sustainable building

Язык: Английский

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Performance and characterization of fly ash-metakaolin-based geopolymer pastes

Materials Today Communications, Год журнала: 2024, Номер 41, С. 110293 - 110293

Опубликована: Сен. 4, 2024

Язык: Английский

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Characterization of Mineralogical and Mechanical Parameters of Alkali-Activated Materials Based on Water Sediments Activated by Potassium Silicate

Buildings, Год журнала: 2024, Номер 14(10), С. 3077 - 3077

Опубликована: Сен. 26, 2024

The circular economy transition encompasses the identification of various available and sustainable materials to replace traditional binders in construction industry. utilization water sediments represents this point as a beneficial action that may provide synergy terms waste reduction replacement energy-intensive materials. To explore potential sediments, study contemplated characterization precursors for design alkali-activated (AAMs). experimental approach was based on detailed raw materials’ chemical, mineralogical, basic material properties assessment designed AAM paste mortar samples. results achieved revealed capability low amorphous form dense structures with favorable mechanical performance, reaching up 36.8 MPa compressive strength. microstructural sorption characteristics applicability such building practice and, thus, valorization into valuable material.

Язык: Английский

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Low carbon footprint lightweight GPM production: Optimization of carbon fiber and hydrogen peroxide

Construction and Building Materials, Год журнала: 2024, Номер 457, С. 139342 - 139342

Опубликована: Ноя. 29, 2024

Язык: Английский

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Solvent transport behavior and thermal degradation kinetics of condom industry waste reinforced natural rubber composites

Thermal advances., Год журнала: 2024, Номер unknown, С. 100019 - 100019

Опубликована: Дек. 1, 2024

Язык: Английский

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High-Temperature Resistance of Industrial Waste-Based Lightweight Geopolymer Mortars Produced Using Microwave Technology

Arabian Journal for Science and Engineering, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 15, 2024

Язык: Английский

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