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• W4213090711 abstract "Testing the compressive strength of concrete using machine learning approaches has high importance for civil engineering. Machine learning approaches provides high accuracy with reduced cost and time. However, such approaches require concrete composition data detailing the type and quantitative ratio of different materials such as water, cement, and aggregate, etc. This study incorporates a dataset where the composition of 125 different kinds of materials has been recorded. Extensive literature review has been carried out for data collection and annotation. The dataset includes traditional, as well as, advanced materials containing both RCA (recycled concrete aggregate) and GGBFS (ground granulated blast furnace slag) along with other main ingredients of concrete mix. Adding RCA and GGBFS to the concrete mix helps to produce environment friendly concrete because these materials are waste and by-products. However, increasing the number of ingredients in the concrete complicates the prediction of concrete compressive strength. Increasing RCA for concrete reduces its mechanical strength which is managed by adding GGBFS, however, the strength depends on the ratios of RCA and GGBFS. So, the compressive strength prediction of concrete containing RCA and GGBFS is crucial task for ensuring the safety of construction projects. This study presents two ensemble models for the accurate prediction of compressive strength new concrete that contains RCA and GGBFS. First ensemble, LRF, combines the LR (linear regression) and RF (random forest) through soft voting. For the second ensemble, CNN (convolutional neural networks) and LSTM (long short term memory) are leveraged. Models’ performance is evaluated through several well-known metrics including R2 (R-square), root mean square, mean absolute error, and mean square error. Results indicate that LRF and CNN-LSTM achieve the highest R2 scores of 0.93 and 0.96, respectively than the state-of-the-art models. LRF is more efficient as compared to CNN-LSTM in terms of computational time. Compared to the traditional concrete strength estimation, machine learning-based compressive strength prediction is accurate, robust and precise." @default.
• W4213090711 created "2022-02-24" @default.
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• W4213090711 date "2022-03-01" @default.
• W4213090711 modified "2023-10-18" @default.
• W4213090711 title "Latest concrete materials dataset and ensemble prediction model for concrete compressive strength containing RCA and GGBFS materials" @default.
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• W4213090711 doi "https://doi.org/10.1016/j.conbuildmat.2022.126525" @default.
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