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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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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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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Data-driven based estimation of waste-derived ceramic concrete from experimental results with its environmental assessment

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 24, P. 6348 - 6368

Published: April 27, 2023

The significant requirement for natural resources, specifically as ingredients of cement, is accelerating due to the considerable growth construction sector. Further, cement production adversely affects climate change generation bulk CO2 emissions. At same time, a quantum ceramic waste generated either in process or demolition products each year. unavailability an adequate way dispose this negatively impacts environment and landfills. Numerous researchers have explored potential utilizing powder partial replacement reduce allied issues. Hence, current study, supervised machine learning (ML) algorithms, i.e., Decision Tree (DT), AdaBoost (AdB), Bagging (Bg), Random Forest (RF), Gradient Boosting (GB) XGBoost (XGB) are employed predicting Compressive Strength (CS) concrete (CWPC). performance models also assessed by using coefficient determination (R2), Mean Absolute Error (MAE), Root Square (RMSE), Nash Sutcliffe efficiency (NSE). k-fold cross-validation technique applied afterwards validate model's performance. For CS CWPC, RF algorithm most effective among with higher R2 value 0.97 significantly lesser RMSE MAE values 1.40 1.13, respectively. SHAP analysis shows that curing days feature has highest influence on CWPC. As per quantitative Environmental Impact Assessment (EIA), 10% CWP content can 6.78%, 8.68%, 7.18%, 7.19% reduced change, ecosystem quality, human health, Moreover, effects non-renewable energy depletion ozone layer, global warming primarily be maximum 7%, 6%, 9%, application ML techniques estimating CWPC would benefit field civil engineering terms conserving effort, time.

Language: Английский

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Feature engineering for predicting compressive strength of high-strength concrete with machine learning models

Asian Journal of Civil Engineering, Journal Year: 2023, Volume and Issue: 25(1), P. 723 - 736

Published: July 11, 2023

Language: Английский

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Mechanical behavior in terms of shear and bending performance of reinforced concrete beam using waste fire clay as replacement of aggregate

Case Studies in Construction Materials, Journal Year: 2023, Volume and Issue: 18, P. e02104 - e02104

Published: April 26, 2023

In this experimental and analytical study, waste fire clay (WFC) was consumed by the use of replacing fine aggregate (FA) in confident amounts. It is targeted to remove current sustainable complications confirming consumption WFC reinforced concrete beams (RCBs) as raw materials. For purpose, FAs were partially replaced with proportions 0 %, 10 20 30 %. Based on motivation, a series studies performed 12 + small-scale bending shear RCBs 100×150×1000mm, considering altered stirrup spacing. While percentage selected % weight, correspondingly, longitudinal reinforcement taken into account Ф12, Ф10, Ф8. Besides, while tension compression reinforcements constant 2Ф12 2Ф6, spacing chosen 160 mm, 200 270 mm. As result increasing tensile ratio has made less effective. Similarly, decreases, dominates behavior, increases, determines behavior. Finally, content for increases ability at maximum level range %−30 it can be said that optimum The results obtained prediction ACI-318 reason difference between expected actual values explained detail.

Language: Английский

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Prediction of Mechanical Properties of Rubberized Concrete Incorporating Fly Ash and Nano Silica by Artificial Neural Network Technique

Axioms, Journal Year: 2023, Volume and Issue: 12(1), P. 81 - 81

Published: Jan. 12, 2023

The use of enormous amounts material is required for production. Due to the current emphasis on environment and sustainability materials, waste products by-products, including silica fume fly ash (FA), are incorporated into concrete as a substitute partially cement. Additionally, fine aggregate has indeed been largely replaced by materials like crumb rubber (CR), thus it reduces mechanical properties but improved some other concrete. To decrease detrimental effects CR, therefore enhanced with nanomaterials such nano (NS). essential designing constRuction structures. Concrete several variables can have its characteristics predicted an artificial neural network (ANN) technique. Using ANN approaches, this paper predict constructed FA partial cement, CR replacement aggregate, NS addition. technique, investigated comprise splitting tensile strength (Fs), compressive (Fc), modulus elasticity (Ec) flexural (Ff). model was used train test dataset obtained from experimental program. Fc, Fs, Ff Ec were added admixtures NS, curing age (P). modelling result indicated that high accuracy. proportional deviation mean (MoD) values calculated −0.28%, 0.14%, 0.87% 1.17%, respectively, which closed zero line. resulting model’s square error (MSE) coefficient determination (R2) 6.45 × 10−2 0.99496, respectively.

Language: Английский

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Influence of ceramic waste powder on shear performance of environmentally friendly reinforced concrete beams

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: May 6, 2024

Abstract This investigation considered the usability of ceramic waste powder (CWP) in altered quantities reinforced concrete beams (RCBs). In this way, it was aimed to reduce environmental impacts by using CWP as a raw material RCBs. 12 small-scale shear RCBs with dimensions 100 × 150 1000 mm were tested study. The variations stirrups spacing and ratio examined these specimens. percentages weight utilized 10%, 20%, 30%, spacings adopted 270 mm, 200 160 mm. At end study, determined that more than 10% additive negatively affected RCBs' compressive strength. load-carrying capacity reduced between 30.3% 59.4% when increased from 0% 30% compared RCB without CWP. However, CWP, there decreases 21.4%–54.3% 18.6%–54.6%, respectively. While increased, specimens obtained lower maximum load value. increase spacing, reached at an earlier displacement When selected observed similar value increased. Besides, resulted bending stiffness quantity enhanced. decreased 29.1% 66.4% 36.3% 20.2% 10.3% 36.9% spacing. As implication experiments, use up realized economical approach is suggested. There some evidence report making may be ecologically benign. due fact reusing significantly CO 2 emissions, save energy, total power consumption. Furthermore, experimental results analytical calculations.

Language: Английский

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Potential Use of Oyster Shell Waste in the Composition of Construction Composites: A Review

Buildings, Journal Year: 2023, Volume and Issue: 13(6), P. 1546 - 1546

Published: June 17, 2023

The oyster shell is a residue rich in calcium carbonate, which can be reused as raw material for creating building materials. For this reason, many researchers focused on the incorporation of composition composites, it means contributing to economic sustainability by reducing presence pollution caused aquaculture waste environment, thus increasing value chain construction sector and its carbon footprint. This paper intends systematize scientific production related shell-based composites construction, carrying out search using Scopus tool systematic review based PRISMA statement. results show that research into cementitious mortar mixtures, with focus use concrete, dominates existing research. There lack studies address application an aggregate or binder coating laying mortars. Most from Asia, there some parts Europe. In Americas, Africa Oceania, no were found. Despite growing understanding importance issues products used blue circular economy sector, are still few consider by-products aquaculture. Future investigations cover these practical contextual gaps contribute better insertion economy.

Language: Английский

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