Mechanical Behavior of Crushed Waste Glass as Replacement of Aggregates

Materials, Journal Year: 2022, Volume and Issue: 15(22), P. 8093 - 8093

Published: Nov. 15, 2022

In this study, ground glass powder and crushed waste were used to replace coarse fine aggregates. Within the scope of aggregate (FA) (CA) changed separately with proportions 10%, 20%, 40%, 50%. According mechanical test, including compression, splitting tensile, flexural tests, creates a better pozzolanic effect increases strength, while particles tend decrease strength when they are swapped As observed in tensile noteworthy progress concrete was achieved by 14%, as fractional replacement for aggregate. samples where CA, tended decrease. It noticed that adding at 50% FA swapped, increase 3.2%, 6.3%, 11.1%, 4.8%, respectively, amount reference one (6.3 MPa). Scanning electron microscope (SEM) analysis consequences also confirm obtained from experimental study. While it is seen provides bonding cement its has positive on consequences, voids formed large pieces affects negatively. Furthermore, simple equations using existing data literature current study developed predict properties recycled practical applications. Based findings our 20% CA recommended.

Language: Английский

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Influence of Replacing Cement with Waste Glass on Mechanical Properties of Concrete

Materials, Journal Year: 2022, Volume and Issue: 15(21), P. 7513 - 7513

Published: Oct. 26, 2022

In this study, the effect of waste glass on mechanical properties concrete was examined by conducting a series compressive strength, splitting tensile strength and flexural tests. According to aim, powder (WGP) first used as partial replacement for cement six different ratios WGP were utilized in production: 0%, 10%, 20%, 30%, 40%, 50%. To examine combined performance, mixed samples (10%, 30%) then prepared replacing cement, fine coarse aggregates with both crashed particles. Workability slump values produced amounts determined fresh state concrete, these compared those plain concrete. For hardened 150 mm × cubic specimens cylindrical diameter 100 height 200 tested identify glass. Next, three-point bending test carried out dimensions 400 mm, span length 300 obtain flexure behavior mixtures. results obtained, 20% substitution can be considered optimum dose. On other hand, particles, increased up certain limit decreased owing poor workability. Thus, 10% level, shows considerably higher better workability properties. Furthermore, scanning electron microscope (SEM) analysis performed investigate microstructure composition. Good adhesion observed between cementitious Lastly, practical empirical equations have been developed determine Instead an experiment, easily estimated at design stage help proposed expressions.

Language: Английский

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Use of waste glass powder toward more sustainable geopolymer concrete

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 24, P. 8533 - 8546

Published: May 1, 2023

The influence of waste glass powder (WGP) with fly ash in certain proportions on geopolymer concrete (GPC) was investigated by exchanging different molarity and WGP percentages GPC. For this objective, altered having 10%, 20%, 30%, 40%, the effect sodium hydroxide (NaOH) examined. compressive strength tests, splitting tensile flexural tests were conducted. workability setting time also evaluated. With addition WGP, for molarities (M) 11, 13, 16 NaOH reduced an average 17%, 67%, respectively. findings showed that slump values decreased as increased. Molarity significantly affected time, but had no time. Although high increased capacity, a noticeable negative workability. This study demonstrated slight capacity Furthermore, when combined effects taken into account, use 10% M13 recommended to obtain optimum sustainable GPC considering both fresh hardening properties. Scanning electron microscopy (SEM) analysis done samples, too.

Language: Английский

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Sustainable Design of Self-Consolidating Green Concrete with Partial Replacements for Cement through Neural-Network and Fuzzy Technique

Sustainability, Journal Year: 2023, Volume and Issue: 15(6), P. 4752 - 4752

Published: March 7, 2023

In order to achieve a sustainable mix design, this paper evaluates self-consolidating green concrete (SCGC) properties by experimental tests and then examines the design parameters with an artificial intelligence technique. regard, cement was partially replaced in different contents granulated blast furnace slag (GBFS) powder, volcanic fly ash, micro-silica. Moreover, fresh hardened were performed on specimens. Finally, adaptive neuro-fuzzy inference system (ANFIS) developed identify influencing compressive strength of For purpose, seven ANFIS models evaluated input separately, terms optimization, twenty-one assigned combinations inputs. Experimental results reported discussed completely, where represented most effect binary mixes, powder played effective role slump retention among other replacements. However, combination micro-silica as ternary successfully achieved improvement compared designs. Furthermore, showed that binder content has highest governing SCGC. when additive powders, provided strength, which also been verified test results.

Language: Английский

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Recent advancements and future trends in 3D concrete printing using waste materials

Developments in the Built Environment, Journal Year: 2023, Volume and Issue: 16, P. 100187 - 100187

Published: June 29, 2023

3D printing concrete (3DPC) is an innovative construction technique that enables the creation of complex and customized structures. This technology offers advantages such as reduced material waste, faster times, ability to produce unique designs with intricate details. article reviews latest advancements in 3DPC technology, its potential transform building industries, developments systems, methodologies, materials, applications. The concludes several parameters mix proportions heavily influence process. Using waste supplementary cementitious materials (SCMs) can significantly improve 3DPC's rheology, but excessive use decrease early strength. Lastly, using recycled sand reduce flexural stiffness strength printed objects when loaded from different directions. also categorizes large-scale technologies into three primary categories, highlighting need optimize ink for better economic environmental outcomes 3DCP

Language: Английский

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Shear performance of reinforced expansive concrete beams utilizing aluminium waste

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 24, P. 5433 - 5448

Published: April 21, 2023

Shear damage is a catastrophic failure in the design of reinforced concrete structural elements. To prevent it, effect aluminum wastes on shear beams was investigated this study. There gap scientific field expanding with aluminium waste, and no research has been done utilizing waste to produce expandable concrete. Moreover, there usage reinforcing, which crucial for engineering applications especially beams, slabs columns. For purpose, experimental investigations were performed total 12 Reinforced Concrete Beams (RCB) different ratio (0, 1, 2 3 vol.%) reinforcement spacing (270, 200 160 mm). The depth span chosen as 1.6, 2.0 2.7. RCB simply supported loading frame subjected four-points bending. As result tests each sample, maximum load, stiffness, ductility energy dissipation capacity calculated. It observed that load Al refuse combined RCBs raises vacancy stirrup reductions compared reference RCBs. Furthermore, it found reduced quantity mixture increased from 0% 3%. However, decrease 1 vol.% could be tolerated. reason, can stated (AW) will contribute beam up 1%.

Language: Английский

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Optimum usage of waste marble powder to reduce use of cement toward eco-friendly concrete

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 25, P. 4799 - 4819

Published: June 18, 2023

In this study, waste marble powder (WMP) was used to replace cement of concrete in specific amounts. To accomplish aim, WMP replaced at 10%, 20%, 30%, and 40% the weight, a reference sample without (REF) created compare compressive strength, splitting tensile flexural strength. The replacement weight resulted 5.7%, 21.7%, 38.1%, 43.6% decreases strength compared with REF. Furthermore, results commonly followed same trend as However, led 5.3%, 8.6%, 19.4%, 26.7% addition, three different calculations, ranging from simple complex, were proposed compute mechanical resistances WMP. These calculations for practical applications validated using values literature implications obtained current research. While based on REF percentages, complex dependent design mixture, age samples, percentages. For ANN approach help coefficient determination (R2) K-fold-cross validation method. All methods provided high accurate estimation predict properties Based studies, utilizing 10% is recommended obtain optimum benefits considering both environmental aspects. Moreover, scanning electron microscope (SEM) energy dispersive X-ray (EDX) analyses then conducted observe interaction concrete. According SEM analyses, some pores detected ITZ observed reaction zone. On other hand, EDX presence manifested by levels Calcium.

Language: Английский

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Production of perlite-based-aerated geopolymer using hydrogen peroxide as eco-friendly material for energy-efficient buildings

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 24, P. 81 - 99

Published: March 6, 2023

Using ground raw perlite through alkali activation to produce various construction materials such as plaster, grouting, and concrete can provide economic environmental advantages by reducing Portland cement consumption. It is aimed cementless pastes mortars based on the of standard sand for this study. Perlite activators (NaOH Na2SiO3) were used binding paste mortar. In addition, aerated lightweight produced using hydrogen peroxide (H2O2) a blowing agent. Thus, aeration mechanism sample was examined, changes in apparent density, compressive strength, flexural strength values determined. At same time, thermal conductivity properties investigated. Geopolymers Water/Perlite H2O2/Perlite ratios produced, their conductivity, contrasted. The experimental finding revealed that adding 0.25% H2O2 (by mass perlite) mixtures enabled production with lower density coefficient without significant loss ultimate strength. developed geopolymer eco-friendly energy efficient solution buildings. Based results, H2O2/Perlite% above 0.5% water/Perlite% 45% should be avoided both mortars. order obtain optimum results terms workability, it recommended ratio all samples percentage 40%.

Language: Английский

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Use of recycled coal bottom ash in reinforced concrete beams as replacement for aggregate

Frontiers in Materials, Journal Year: 2022, Volume and Issue: 9

Published: Nov. 22, 2022

In this research, it is studied the crack and flexural behavior of reinforced concrete beams with various bottom ash ratios (BARs) considered as fine aggregate in an experimental numerical investigation. For purposes, different series are varying sizes ranging from 0 to 25 mm. To supplement concrete, put use conjunction material 0–5 mm size particles replacement for aggregates 25%, 50%, 75%, 100%. Experiments were done investigate how fracture behaviors represented. 75% BARs gave optimum results terms displacement capacity. Increasing BAR 100% decrease deflection capacity beam. Also, ANSYS software used build 3D finite element models (FEMs) compare experiment data. Experimental tests show exceptionally tight behaviors. Following this, a computer-generated structure made by running SAP 2000, strength then utilised RC structural model. Every stage building’s construction thoroughly assessed utilizing multiple types seismic testing, employing SAP2000 program, resulting analysis providing significant findings on force affects horizontal each floor. The showed that weight dramatically decreases number columns RCBs raised while also increasing BARs. Moreover, magnitude earthquake have effect structures. varies between close- far-fault earthquakes, close-fault stronger than earthquakes. This brings us second disadvantage which strain produces severe Besides, was seen simulations experiments yield tiny cracks very identical configurations.

Language: Английский

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Improvement in Bending Performance of Reinforced Concrete Beams Produced with Waste Lathe Scraps

Sustainability, Journal Year: 2022, Volume and Issue: 14(19), P. 12660 - 12660

Published: Oct. 5, 2022

In this study, the impacts of different proportions tension reinforcement and waste lathe scraps on failure bending behavior reinforced concrete beams (RCBs) are clearly detected considering empirical tests. Firstly, material strength consistency test then ½ scaled beam have been carried out. For purpose, a total 12 specimens were produced in laboratory tested to examine mechanism under flexure. Two variables selected creating text matrix. These longitudinal ratio (three level) volumetric (four level: 0%, 1%, 2% 3%). The simply supported subjected two-point test. To prevent shear failure, sufficient stirrups used. Thus, change was observed during each With addition 3% scraps, compressive escalated by 11.2%, 21.7% 32.5%, respectively, compared without waste. According slump results, as proportion mixture is increased, diminishes. Apart from tests, following results obtained tests performed beams. It that with waste, mechanical features improved. had RCBs. While there no significant stiffness strength, ductility increased considerably

Language: Английский

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