— Mixture optimization of mechanical, economical, and environmental objectives for sustainable recycled aggregate concrete based on machine learning and metaheuristic algorithms. Author links open overlay panel Kaihua Liu a, Jiakai Zheng a, Shuxiong Dong a, Weili Xie a, Xiaocun Zhang b. Show more.
— Recycled concrete aggregate (RCA) is an increasingly popular material used as an aggregate in construction projects. It is an economical alternative to traditional crushed stone or gravel. ... The most popular machine learning algorithms for concrete strength prediction include Support Vector Machine (SVM), Decision Trees, Random …
— Construction and demolition activities consume large amounts of natural resources, generating 4.5 bi tons of solid waste/year, called construction and demolition waste (C&DW) and other wastes, …
— It is the prerequisite for recycling waste concrete that the technique of reclaiming, crushing, and manufacturing recycled aggregate (RA). Based on the existing abroad and domestic techniques of crushing waste concrete and recycled aggregate modification [], considering the condition of engineering in China, techniques of RA …
— Machine learning prediction of carbonation depth in recycled aggregate concrete incorporating SCMs Constr. Build. Mater., 287 ( 2021 ), Article 123027, 10.1016/j.conbuildmat.2021.123027
— The adoption of recycled-aggregate concrete has gained traction in response to increasing environmental concerns, meeting the demands of the construction industry. ... Modeling the mechanical properties of recycled aggregate concrete using hybrid machine learning algorithms. Resour Conserv Recycl, vol. 190 (2023), …
— Introduction. The rapid growth of the concrete industry has caused several environmental issues, such as the depletion of natural aggregates, overload of landfills, and CO 2 emission released to the atmosphere [1], [2], [3]. One latent solution to decreasing the environmental footprint of concrete production is the reuse of construction and …
— Interpretable machine learning model for evaluating mechanical properties of concrete made with recycled concrete aggregate ... this paper is to use the data-driven approach to predict and evaluate the mechanical properties of concrete made with recycled concrete aggregate (RCA), including compressive strength and elastic modulus. Using …
— There is a consensus that the performance of RAC is affected by a combination of factors such as water-cement ratio, replacement ratio of recycled coarse aggregate, curing age, etc (Liang et al., 2021; Liu, et al., 2022a, b), so the traditional method based on control variables may not be able to effectively analyze these …
— To determine the compressive strength of self-compacting recycled aggregate concrete using artificial neural network (ANN) Author links open overlay panel Jesús de-Prado-Gil a, Rebeca Martínez-García b, ... Machine learning for SCC in literature is shown in Table 14. ANN shows better results based on sensitive assessments for SCC is noted.
— The characterization of stress-strain behaviors of recycled aggregate concrete (RAC) excluding physical properties of recycled aggregates (RAs) may result in an inaccurate prediction of mechanical responses in practical applications. ... Data-driven shear strength prediction of steel fiber reinforced concrete beams using machine …
RUBBLE MASTER's mobile impact crushers can be configured to meet any spec so you can tackle more jobs with a single machine. Meet Your Spec. High-quality recycled concrete aggregates with excellent gradation for dense-graded aggregate (DGA) base and …
— The variations in mechanical properties of geopolymer concrete (GPC) prepared with treated recycled concrete aggregate (RCA) in conjunction with a modified two-stage mixing approach (M-TSMA (sp-ggbs)) have been studied in the present research.Since GPC is prepared using fly ash (FA) and ground granulated blast slag …
— Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon …
— In the field of materials science, various soft computing approaches or machine learning (ML) have been adopted for predicting the CS and STS of concrete, such as artificial neural networks (ANNs), standard neural networks (SNNs), and Bayesian neural networks (BNNs) [17], [18].The literature contains numerous in-depth reports on using …
— Influence of Bacillus Subtilis (B. Subtilis) bacteria on the strength characteristics of recycled concrete aggregate (RCA), incorporating silica fume (SF) as a substitution of cement, has been investigated in this study.Two groups of mixes (A for w/c=0.3 and B for w/c=0.35) were prepared using two different cement contents in each …
1. Introduction. Recycled aggregate concrete (RAC) has gained widespread application due to its advantages in promoting the reuse of construction waste, reducing environmental impact, and cutting economic costs [1, 2].During the production of RAC, the mortar from the original concrete adhered to the aggregate surface, leading to distinct properties in the …
— After demolition of old roads and buildings, the removed concrete is often considered worthless and disposed of as demolition waste. By collecting the used concrete and breaking it up, recycled concrete aggregate (RCA) is created (Fig. 1).This paper focuses on coarse RCA which is the coarse aggregate from the original concrete that is …
— This paper presents the state-of-the-art the machine learning algorithms used to predict the properties of recycled aggregate concrete (RAC). The main conclusions can be drawn as follows: (1)
— Recycled aggregate concrete (RAC) involves recycled concrete aggregates obtained after crushing, cleaning, and grading of waste concrete blocks, which either partially or completely replace natural sand and gravel (Guo et al., 2018; Shi et al., 2016; Tam et al., 2021). The primary distinction between recycled aggregates and natural …
— These machines can reduce larger rocks to smaller rocks, gravel, or even dust! The concrete can be refined for rebar, wood, or other metal chunks before being added to these machines. There are several types of crushers: ... Recycled concrete aggregate offers many diverse advantages, among the most prominent are safety and …
— Prediction on compressive strength of recycled aggregate self-compacting concrete by machine learning method. Author links open overlay panel Suhang Yang a, Jingsong Sun a, Xu Zhifeng b. Show more. Add to Mendeley. ... Recycled aggregate self-compacting concrete (RASCC) has become one of the main topics worthy of research in …
— The machine learning model for predicting compressive strength in addition to compressive stress modulus and graphs for recycled aggregate concrete are reviewed, as well as their limitations are discussed. ... Mixture Optimization of Recycled Aggregate Concrete Using Hybrid Machine Learning Model. Materials. 2020, Vol . 13, Page . 4331 …
— This article presents a structured and comprehensive review of the existing literature on physical, chemical, microstructure, and durability properties of recycled …
RECYCLED CONCRETE USES. Old, unneeded concrete can be recycled and used to create recycled aggregate. In most cases, recycled aggregate will be used as a subbase material, but it can also be paired with materials and reused as an aggregate in new concrete. CA6 recycled PCC and Grade 8 recycled are common aggregates made from …
— Fiber-reinforced recycled aggregate concrete (FR-RAC) has recently gained more popularity because of its advantages, high strength, eco-friendliness, and cost …
— This study presented the first application of an ensemble machine learning (ML) model – formulated by combining the random forests (RF) model with support vector machine (SVM) within a weighted voting framework – to predict the modulus of elasticity (MOE) of recycled aggregate concrete [i.e., wherein the natural coarse aggregate …
— Recycled aggregate concrete (RAC) is a promising solution to address the challenges raised by concrete production. However, the current lack of pertinent design rules has led to a hesitance to accept …
— The growing use of recycled concrete aggregate (RA) in concrete has raised concerns about their corrosion, which affect their properties, particularly in harsh environments. This research utilizes a set of experiments to evaluate the properties of recycled aggregate concretes (RACs) subjected to acid rain using magnetic water (MW) …
— This study proposed the surrogate model to predict recycled aggregate concrete (RAC) creep behavior utilizing machine learning (ML).. Both grid search algorithm and k-fold cross-validation were utilized to find the optimal hyperparameters. • The XGBoost, was shown to have a higher efficiency and accuracy for predicting RAC creep …
— This article presents a comprehensive review on the use of recycled concrete aggregate (RCA) and recycled aggregate concrete (RAC) in construction, with emphasis on structural applications and …
— Machine learning-based approach for optimizing mixture proportion of recycled plastic aggregate concrete considering compressive strength, dry density, and production cost. Author ... Performance and optimisation study of waste plastic aggregate based sustainable concrete – a machine learning approach. Cleaner Waste Systems, 2 …
— The rapid growth of the concrete industry has caused several environmental issues, such as the depletion of natural aggregates, overload of landfills, and CO 2 emission released to the atmosphere [1], [2], [3].One latent solution to decreasing the environmental footprint of concrete production is the reuse of construction and demolition waste (CDW) …
— Recycled Aggregate Concrete (RAC) is basically concrete mix that is prepared from crushed aggregates and concrete which has already been used in …
— Construction and demolition waste, including recycled concrete aggregate and recycled glass, can be incorporated into civil engineering applications to address environmental concerns and promote sustainable development. ... crush these stones to the required particles size using an electric crushing machine in the concrete laboratory (Fig. …
Reuse of recycled aggregate in the production of alkali-activated concrete. P. Chindaprasirt, T. Cao, in Handbook of Alkali-Activated Cements, Mortars and Concretes, 2015 19.2 A brief discussion on recycled aggregates. Recycled aggregate is defined as aggregate resulting from the processing of inorganic or mineral material previously used in construction (BS …
— Mixture optimization of mechanical, economical, and environmental objectives for sustainable recycled aggregate concrete based on machine learning and metaheuristic algorithms. Author links open overlay panel Kaihua Liu a, Jiakai Zheng a, Shuxiong Dong a, Weili Xie a, ... Recycled aggregate concrete (RAC) has received rapidly growing …
