AI-based performance prediction for 3D-printed concrete considering anisotropy and steam curing condition

Construction and Building Materials, Journal Year: 2023, Volume and Issue: 375, P. 130898 - 130898

Published: March 14, 2023

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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Effect of agricultural olive, rice husk and sugarcane leaf waste ashes on sustainable ultra-high-performance concrete

Journal of Building Engineering, Journal Year: 2023, Volume and Issue: 72, P. 106689 - 106689

Published: April 27, 2023

Language: Английский

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Properties of sustainable high-strength concrete containing large quantities of industrial wastes, nanosilica and recycled aggregates

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 24, P. 7444 - 7461

Published: May 1, 2023

This research aims to study the effect of adding nanosilica (NS) on properties sustainable high-strength concrete (SHSC). The SHSC was produced using recycled aggregates from debris as a 100% alternative coarse aggregate, and industrial waste used supplementary cementitious materials at 50% 75% Ordinary Portland cement (OPC) weight. A total 25 mixes, including control mix (The first made reference by only without replacement materals), binary mixes (OPC fly ash (FA)), ternary (OPC, FA ground-granulated blast-furnace slag (GGBS)) quaternary FA, GBFS silica fume (SF)) were developed. dosage NS 0%, 1%, 3% 5% binder ratio. fresh evaluated slump test, mechanical assessed testing compressive strength, splitting tensile flexural strength modulus elasticity. transport water permeability, sorptivity chloride permeability tests. Results showed that compared with mixture, containing blends achieved enhanced 28 91 days, indicating this mixture can achieve highest sustainability performance. mixtures performance 80.7, 6.46 10.09 MPa for split respectively, days. also permeability; 2.54 × 10−11 (cm/sec) 1370 coulombs

Language: Английский

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The use of crushed recycled glass for alkali activated fly ash based geopolymer concrete and prediction of its capacity

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 24, P. 8267 - 8281

Published: May 1, 2023

The influence of waste glass aggregate (WGA) with fly ash in certain proportions was studied by different amounts molarity and WGA proportion on geopolymer concrete (GPC). For this aim, the values NaoH concentration consumed investigation were determined as 11, 13 16. At end examinations, workability, setting time, compression strength (CS) test, splitting tensile (ST) tests flexural (FS) are performed. conclusions demonstrated that slump increased (WG) percentages decreased. While concerning CS, ST FS combination increased, these test results tend to decrease correspondingly. NaOH altered from 11 16, increase. This examination study demonstrates had also a slight adverse capacity workability. Moreover, use 10% 16 is suggested gain optimum sustainable GPC considering both fresh hardening properties combined molarity. Furthermore, examination, offered models established related those built several standard codes. More importantly an equation derived predict compressive mixture utilized study. Additionally, scanning electron microscopy (SEM) analysis achieved example parts attained examples formed WGA.

Language: Английский

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Estimating Compressive Strength of Concrete Using Neural Electromagnetic Field Optimization

Materials, Journal Year: 2023, Volume and Issue: 16(11), P. 4200 - 4200

Published: June 5, 2023

Concrete compressive strength (CCS) is among the most important mechanical characteristics of this widely used material. This study develops a novel integrative method for efficient prediction CCS. The suggested an artificial neural network (ANN) favorably tuned by electromagnetic field optimization (EFO). EFO simulates physics-based strategy, which in work employed to find best contribution concrete parameters (i.e., cement (C), blast furnace slag (SBF), fly ash (FA1), water (W), superplasticizer (SP), coarse aggregate (AC), fine (FA2), and age testing (AT)) same effort carried out three benchmark optimizers, namely cycle algorithm (WCA), sine cosine (SCA), cuttlefish (CFOA) be compared with EFO. results show that hybridizing ANN using mentioned algorithms led reliable approaches predicting However, comparative analysis indicates there are appreciable distinctions between capacity ANNs created WCA vs. SCA CFOA. For example, mean absolute error calculated phase ANN-WCA, ANN-SCA, ANN-CFOA, ANN-EFO was 5.8363, 7.8248, 7.6538, 5.6236, respectively. Moreover, considerably faster than other strategies. In short, highly hybrid model, can recommended early A user-friendly explainable explicit predictive formula also derived convenient estimation

Language: Английский

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RETRACTED: Fresh and mechanical performances of recycled plastic aggregate geopolymer concrete modified with Nano-silica: Experimental and computational investigation

Construction and Building Materials, Journal Year: 2023, Volume and Issue: 394, P. 132266 - 132266

Published: June 28, 2023

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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A comprehensive assessment of ceramic wastes in ultra-high-performance concrete

Innovative Infrastructure Solutions, Journal Year: 2025, Volume and Issue: 10(1)

Published: Jan. 1, 2025

Abstract This study investigates the utilization of ceramic waste from manufacturing sector as a partial replacement for cement and fine aggregate in ultra-high-performance concrete (UHPC). Ceramic waste, ground into microparticles (555 m 2 /kg), replaced 10–50% 22 UHPC mixtures. One group used sand, other aggregate. Tests evaluated mechanical properties, consistency, durability, microstructure. Results showed that SCWP WCWP could replace up to 20% cement, enhancing performance while maintaining desired durability characteristics. The results slump flow diameter decreased by increasing ratios 50% mass 685 mm 670 compared with control mix, which had 770 first 634 615 comparison 713 mix second group. Compressive strengths were increased 171.3 MPa 176.7 MPa, 155 at 56 days In group, compressive reached 160.31 165.33 143.15 days. All including strength, are enhanced percentages 20%. reveals substitution WCWP, hardened properties such tensile flexural strength modulus elasticity significantly improved, reaching 21.31 27.85 54.12 GPa 19.97 25.95 50.36 second. Water permeability also decreased. gradual increase OPC reduced loss. secondary C–S–H gel, formed reactions filled micropores UHPC’s microstructure matrix density.

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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