Recycled Concrete Aggregate
Recycled Concrete Aggregate A Sustainable Choice for Unbound Base. ACI Fall 2015 Convention Denver, Colorado November 8, 2015. Cecil L. Jones, PE Diversified …
Influence of treated recycled concrete aggregate 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 …
Recycled Concrete Aggregates
Recycled concrete aggregate is aggregate made from used concrete from demolition sites. The quantity of old concrete from a demolition site depends on the type of building. For example, the list below shows the …
Compressive behavior of eco-friendly concrete
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. 2 ...
Recycled Concrete Aggregate (RCA) – KTC Group
Recycled Concrete Aggregate (RCA) To align with Singapore's vision in construction sustainability, Eastern Continent also recycle concrete debris from demolishing works and convert them into useable products as Recycled Concrete Aggregate (RCA). The primary process will be using excavator and jaw crusher to break up the concrete hardcore. The ...
Recycled Concrete Aggregate- How to Make It and What Is …
Recycled concrete aggregate machines like protable and mobile crushers can help to get coarse aggregate while ball mill or powder grinding mill can help to get …
Evaluating compressive strength of concrete made with recycled concrete …
In recent years, machine learning algorithms have been increasingly used to predict the performance of concrete with both natural aggregates [46,47] and with recycled aggregates [4].
Crystals | Free Full-Text | Use of Recycled Concrete …
Recycled concrete aggregates (RCA) are used in existing green building composites to promote the environmental preservation of natural coarse aggregates (NCA). Besides, the use of RCA leads to potential solutions to the social and economic problems caused by concrete waste. It is found that insufficient information on the longevity and …
What Is Recycled Concrete Aggregate | Importance of Recycled Concrete …
Recycled Concrete Aggregate Cost. Recycled Concrete Aggregate CostnRecycled concrete aggregate disadvantages include the cost, which in the USA is around $15 to $ 55 per ton, around $18 to $80 per cubic yard, and $2 to $5 per cubic foot, with price, depends on the quality and quantity of recycled aggregate. Stabilized …
Modeling the mechanical properties of recycled aggregate concrete …
This research has used 16 concrete mix designs containing 0.1, 0.3, and 0.5% steel fiber (SF), and 20, 30, 40, 50, and 60% copper slag (CS) to examine their fresh and hardened characteristics, and ...
AI-Assisted optimisation of green concrete mixes incorporating recycled
To tackle this shortcoming, incorporating SCMs into recycled aggregate concrete (RAC) has been extensively explored ... economical, and environmental objectives for sustainable recycled aggregate concrete based on machine learning and metaheuristic algorithms. J. Build. Eng., 63 (2023), Article 105570, …
An Overview of Existing Application of Recycled Concrete in …
China is one of the largest producers of construction and demolition (C&D) waste (2.4 billion tonnes in 2015), but the average recovery rate was only approximately 5% in 2017 (Huang et al. 2018 ). In particular, recycling C&D waste is in an urgent need, as this waste stream has consumed a large amount of useful land resources (Li et al. 2020 ).
Machine learning prediction of mechanical properties of concrete …
Coarse recycled concrete aggregate replacement ratio, aggregate to cement ratio, bulk density of recycled concrete aggregate, water absorption of coarse recycled concrete aggregate, water-to-cement ratio ... Prediction of elastic modulus of normal and high strength concrete by support vector machine. Constr. Build. Mater., 24 …
Predicting the Splitting Tensile Strength of Recycled Aggregate
This study used the novel algorithms of machine learning (ML) to forecast the splitting tensile strength (STS) of concrete containing recycled aggregate (RA). ... to forecast the splitting tensile ...
Prediction of mechanical properties of recycled aggregate …
This paper investigates the mechanical properties of concrete containing recycled aggregates and fly ash as a sustainable and eco-friendly solution for construction, which can reduce the demand for natural aggregates and cement, conserves natural resources, and curtails greenhouse gas emissions.Machine learning methodology can …
How Is Recycled Concrete Made? | Aggregates …
Recycled concrete aggregate, often abbreviated to RCA, is also known as "crushed concrete." This name sums up what RCA material is: crushed asphalt and concrete debris that has been screened, …
Machine learning prediction of carbonation depth in recycled aggregate
1. 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 …
Infrastructures | Free Full-Text | Recycled Aggregates Concrete …
The recycled aggregate is an alternative with great potential to replace the conventional concrete alongside with other benefits such as minimising the usage of natural resources in exploitation to produce new conventional concrete. Eventually, this will lead to reducing the construction waste, carbon footprints and energy consumption. This paper aims to study …
Recycled Concrete
The recycled aggregate is used as soon as it is processed. Recycled concrete currently supplies about 5% of aggregate use. The bulk of recycled aggregates – about 68 % – is used as road base. The remainder is used for new concrete mixes (6%), asphalt (9 %) and fill. Recycling concrete features both cost savings and environmental benefits:
Mixture Optimization of Recycled Aggregate Concrete Using Hybrid …
Recycled aggregate concrete (RAC) contributes to mitigating the depletion of natural aggregates, alleviating the carbon footprint of concrete construction, and averting the landfilling of colossal amounts of construction and demolition waste. However, complexities in the mixture optimization of RAC due to the variability of recycled …
Interpretable machine learning model for evaluating …
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 …
Using Recycled Concrete Aggregate | Specify …
Construction aggregate includes a range of particulate materials - ranging from coarse to medium grains - including sand, gravel, slag, crushed stones, and recycled concrete. These materials are …
Recycled Concrete Aggregates: A Review | International …
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 …
Machine learning techniques for recycled aggregate concrete …
This study aims to arrive at models to correlate the mechanical properties of recycled aggregate concrete (RAC). An experiment was performed on the recycled coarse aggregate (RCA) ratio of 0%, 25%, 50%, and with 400kg/m3 of cement content, varying water-to-cement ratio (w/c) 0.3, 0.4, 0.48, and super plasticizer (SP) …
A comprehensive review on the use of recycled concrete aggregate …
Fig. 10 shows concrete containing natural coarse aggregate and recycled brick coarse aggregate (Liu et al., 2021). Hence, the RCA's physical, chemical, and mechanical characteristics must be investigated before use (Mills-Beale and You, 2010). As previously discussed, it is important to note that these properties would differ from the …
Prediction of properties of recycled aggregate concrete using machine …
Recycled aggregate concrete (RAC) not only alleviates the shortage of natural aggregates but also promotes the recycling of construction and demolition waste, contributing to sustainable development. ... Prediction on compressive strength of recycled aggregate self-compacting concrete by machine learning method. Journal of Building Engineering ...
Recycled Aggregates
Recycling of concrete is a relatively simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality. See ACI 555 (2001) for more information on processing …
A comprehensive review on the use of recycled concrete …
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon …
A Comprehensive Review on Recycled Aggregate and …
This study provides a comprehensive review on recycled aggregate (RA) and recycled aggregate concrete (RAC) regarding their history, recycling, reuse and …
Mixture optimization of mechanical, economical, and …
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 …