The compressive strength of recycled concrete has a strong relation with aggregate (natural and recycled aggregates) content, water/cement ratio, cement content, type of aggregate, and type and dosage of admixture [10], [11]. ... This study estimated the compressive strength of recycled concrete using six machine learning approaches, …
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 ).
Fresh and hardened properties of recycled plastic fiber reinforced self-compacting concrete made with recycled concrete aggregate and fly ash, slag, silica fume. J. Build. ... Performance and optimisation study of waste plastic aggregate based sustainable concrete – a machine learning approach. Cleaner Waste Systems, 2 (2022), Article 100014 ...
Recycled concrete can also be used to create 2"-4" recycled stone. This product is typically used for site stabilization, bottom layer road base, and backfill. Besides stone, recycled concrete can also be used to create engineered fill sand. This fine-grained material neutralizes pH levels and is commonly used for environmental fill and ...
Taking concrete testing age into account, for the concrete with fine recycled aggregate the reduction in 3-day compressive strength is higher than 7- and 28-day compressive strength while for the concrete incorporating coarse or both fine and coarse recycled concrete, the decrease in 28-day compressive strength is higher than that of 3 …
This study estimated the compressive strength of recycled concrete using six machine learning approaches, including GB, XGB, SVR, GB_PSO, XGB_PSO, 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 …
This study used the novel algorithms of machine learning (ML) to forecast the splitting tensile strength (STS) of concrete containing recycled aggregate (RA). The gene expression programming (GEP ...
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 …
Concrete crushers are purpose-built machines designed to break down concrete into smaller, manageable pieces. They act as a pivotal solution in recycling concrete debris from demolition sites or construction projects, turning it into valuable materials for reuse. These crushers come in various sizes and types, each tailored for …
The first step to recycling old concrete is to use industrial crushing equipment in order to break up the original structure. Next, the broken up concrete is run through a secondary impactor. After being …
This paper presents an ensemble machine learning (ML) model for prediction of modulus of elasticity (MOE) of concrete formulated using recycled concrete aggregate (RCA), in relation to features of ...
In this respect, recycled aggregate concrete (RAC) is typically a type of concrete containing aggregates obtained from crushing and processing of previously used concrete structural elements that ...
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 …
recycled aggregate the reduction in 3. and 28. crete, the decrease in 28 day compressive strength is higher than. and 7. • Replacing natural aggregate with recycled aggregate up to 30%, reduces ...
This study investigates the feasibility of introducing machine learning algorithms to predict the diffusion resistance to chloride penetration of recycled aggregate concrete (RAC). A total of 226 samples collated from published literature were used to train and test the developed machine learning framework, which integrated four standalone ...
Concrete Recycling & Crushed Concrete. Recycling concrete from demolition project can result in considerable savings since it saves the costs of transporting concrete to the landfill (as much as $ .25 per ton/mile), and eliminates the cost of disposal (as high as $100 per ton). As landfill costs for construction, demolition, and land-clearing ...
Structural Concrete is a structural engineering journal publishing research on all aspects ... construction, demolition, and sustainability. Abstract The utilization of recycled aggregates (RA) in producing novel concrete can contribute to the resilience of the building sector. ... Automated machine learning techniques for estimating of elastic ...
How Concrete Is Recycled. Concrete is recycled by using industrial crushing equipment with jaws and large impactors. After the concrete is broken up, it is usually run through a secondary impactor and is then screened to remove dirt and particles and to separate the large and small aggregate. Additional processes and equipment, …
concrete recycling systems guarantee that residual concrete and cleaning water are recycled in an environmentally friendly manner. Our innovative washing-out units …
This helps to preserve natural resources and reduce the energy used to produce new concrete. The recycling process for concrete waste involves breaking down the material into smaller pieces using industrial equipment such as jaw crushers, impact crushers and cone crushers. These machines break down large pieces of concrete into more …
Evaluating compressive strength of concrete made with recycled concrete aggregates using machine learning approach. Construction and Building Materials, 323, 126578. Google Scholar. US EPA. (2020). Construction and Demolition Debris: Material-Specific Data." Collections and Lists.
[19][20][21][22][23] In order to predict the compressive strength of concrete made using recycled material, various authors have employed machine learning. 6,7,[24][25][26][27] [28] Artificial ...
1. Introduction. Reduction of carbon dioxide (CO 2) emissions associated with key industries such as building and construction plays a crucial role in achieving climate neutrality by 2050 (Rosa et al., 2022).Among these, the use of building materials, a major one of which is concrete, is a significant source of CO 2 emissions. The annual …
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 ...
Rebuilding with Recycled Concrete. A study by UBC's Shahria Alam has shown that recycled concrete is as durable and strong as fresh concrete, and sometimes stronger. Image: UBC. No amount of …
