Green and Durable Lightweight Aggregate Concrete: The Role of Waste and Recycled Materials

Wang, Jiyu; Zheng, Kai; Cui, Na; Cheng, Xin; Ren, Kai; Li, Feng; Zhou, Zhen; Xie, Ning

doi:10.3390/ma13133041

Cited by 25 publications

(12 citation statements)

References 120 publications

(183 reference statements)

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“…Concrete made from ceramic wastes can address a number of environmental issues. [8] When ceramic powder used in specified amounts to replace OPC, ceramic waste powder is very successful in lowering environmental hazards (e.g., land pollution). Where conventional concrete strength is suggested, this waste can be used in the concrete.…”

Section: Literature Reviewmentioning

confidence: 99%

Exploring sustainable construction through experimental analysis and AI predictive modelling of ceramic waste powder concrete

Kashyap,

Saxena,

Gautam

et al. 2024

Preprint

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This research tackles the one of the major environmental issues raised by the ceramic industry’s production of ceramic waste powder (CWP) during the cutting and polishing stages, Which requires a different strategy to reduce pollution and cut landfill usage.The main goal of this study is to make use of AI model for CWP concrete by applying Machine Learning (ML) techniques to effectively estimate the mechanical property of the concrete. A thorough investigation is carried out on 54 different concrete mixes, using CWP in place of cement in percentages of 10%, 20%, 30%, 40%, and 50%. The baseline is the compressive strength of plain concrete. A supervised machine learning (ML) techniques such as gradient boosting, Random forest and Regeration analysis are used to predict the compressive strength of CWP concrete (CWPC). Important metrics including R2, Mean Absolute Error (MAE), and Mean Square Error (MSE) are used to assess the performance of the model. The results show that Random forest performs better than the other models (R2 = 0.95, MSE = 5.25 KN/mm2, MAE = 1.05 KN/mm2). The study emphasizes how using CWPC as a building material might help reduce water pollution and land degradation. It also emphasizes the efficiency advantages that may be attained by using ML approaches for concrete characteristic estimate, which will ultimately result in time and resource savings for researchers in the construction industry.

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Section: Literature Reviewmentioning

confidence: 99%

Exploring sustainable construction through experimental analysis and AI predictive modelling of ceramic waste powder concrete

Kashyap,

Saxena,

Gautam

et al. 2024

Preprint

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show abstract

“…Lightweight aggregates from waste materials, such as demolition wastes and agricultural residues, can be used to produce lightweight concrete blocks and achieve a lower thermal conductivity (Callejas et al, 2017). Agricultural solid waste from maize and corn has been incorporated with cementitious powder to prepare lightweight concrete (Wang et al, 2020). The National Concrete Masonry Association suggested that the thermal resistance of lightweight concrete blocks is less sensitive to the thickness of blocks compared to normal weight blocks (NCMA, 2013).…”

Section: Concrete Blocks and Clay Bricksmentioning

confidence: 99%

Thermal resistance of masonry walls: a literature review on influence factors, evaluation, and improvement

Ismaiel

Chen

Cruz-Noguez

et al. 2021

Journal of Building Physics

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Increasing the thermal resistance of masonry wall systems is one of the effective ways to reduce energy consumption in the operation of masonry buildings. This increase is also demanded by newer, more stringent energy codes. However, the effective thermal resistance ( R-value) of masonry walls is affected by many factors, such as thermal bridging, which occurs in places where highly conductive structural components penetrate insulating materials. Thermal bridging is common when connecting masonry veneers to structural backup walls. Furthermore, quick and precise methods for estimating the R-value are needed for thermal design improvements and code-compliance calculations. This study presents a comprehensive literature review on key factors that influence the overall thermal performance of masonry walls, methods to effectively estimate and measure R-values, and improvements in thermal design. In addition to identifying the main technical and practical challenges and the corresponding progress made on each front, key design considerations, such as code compliance, material properties, insulation types, and location, as well as special ties and shelf angles types, are also discussed. This study summarizes critical information and recommendations that will help improve the thermal design of masonry walls, hence reducing the energy consumption of buildings.

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“…In the past, a few researchers have tried to produce structurally lightweight concrete by using different materials as a replacement of normal coarse aggregates, i.e., expanded polystyrene (EPS) lightweight aggregate, organic lightweight aggregate, solid waste or recycled by-products and expanded clay aggregates [ 1 , 2 , 3 , 4 ]. A detailed experimental study was conducted to precisely estimate the compressive strength of structural lightweight concrete produced by using different types of expanded clays [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

A Sustainable Alternative for Green Structural Lightweight Concrete: Performance Evaluation

Alqahtani¹

2022

Materials

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The use of structural lightweight concrete in the construction industry is on the rise in the last few decades mainly because of the higher strength per unit density, as it reduces the total deal load of the structural elements as compared with normal strength concrete. In addition, the environmental concerns of the concrete industry have gained supreme importance in recent times, demanding vital and effectual steps. In this regard, the current study was carried out to formulate an alternative approach for producing a sustainable lightweight structural concrete. The study followed two stages: initially, the selection of optimized manmade plastic aggregates based on trial concrete mixes, and finally, to gauge the physical-, mechanical- and durability related properties of the concretes integrating optimized manmade aggregate series at different replacement fractions. As a result of the first phase: two aggregate series out of eight were selected based on the compressive strength and durability properties of their concretes. In the next stage, all the properties for the optimized aggregate concrete were analyzed in terms of compressive strength. It was noted that the physical, mechanical and chloride penetration resistances have generally displayed a decreasing trend, with an increase in the manmade plastic aggregate replacement fractions as compared with reference lightweight concrete. However, the two aggregates, i.e., 70% DS-30% LLDPE and 50% QF-50% PET at the replacement fractions of 25% and 100%, were found to be the best two contenders that fulfilled the criteria for structural lightweight concrete, i.e., ASTMC330/C330M-14, and were proposed for structural lightweight purposes with low and relatively high strength and chloride resistance-based durability requirements, respectively. In addition, the brittleness ratios and structural efficiency parameters for the concretes of the 70% DS-30% LLDPE and 50% QF-50% PET also supplemented the aforementioned findings. Overall, this study presents a sustainable approach for the effective utilization of plastic waste for producing structural lightweight concrete.

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Green and Durable Lightweight Aggregate Concrete: The Role of Waste and Recycled Materials

Cited by 25 publications

References 120 publications

Exploring sustainable construction through experimental analysis and AI predictive modelling of ceramic waste powder concrete

Exploring sustainable construction through experimental analysis and AI predictive modelling of ceramic waste powder concrete

Thermal resistance of masonry walls: a literature review on influence factors, evaluation, and improvement

A Sustainable Alternative for Green Structural Lightweight Concrete: Performance Evaluation

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