Thermal properties of concrete containing recycled materials from construction and demolition waste

Pavlů, Tereza; Fořtová, Kristina; Diviš, Jakub

doi:10.1063/5.0000379

Cited by 2 publications

(1 citation statement)

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“…Recycled concrete aggregates are equipped with similar properties to natural aggregates, which have been widely used in concrete production. Previous studies [3][4][5] have reported that recycled brick powder (RBP) has similar characteristics as supplementary cementitious materials, such as high content of SiO 2 and Al 2 O 3 . However, waste clay brick aggregates are of high crushing value and water absorption, which limits their large-scale application in concrete.…”

Section: Introductionmentioning

confidence: 99%

Research and Model Prediction on the Performance of Recycled Brick Powder Foam Concrete

Xie

Dong

Deng

et al. 2022

Advances in Civil Engineering

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In order to achieve resource conservation, protect the environment and realize the sustainable development of the construction industry, the low energy resource utilization of construction waste was explored. In this paper, the effect of air bubble swarm admixture, recycled brick powder admixture, water to material ratio, and HPMC content on the physical and mechanical properties of recycled brick powder foam concrete was investigated by conducting a 4-factor, 5-level orthogonal test with recycled brick powder as fine aggregate, and the effect of each factor on the physical and mechanical properties of recycled brick powder foam concrete was derived, and the optimum ratio of recycled brick powder foam concrete was determined by analysing the specific strength. Five machine learning models, namely, back propagation neural network improved by particle swarm optimization (PSO-BP), support vector machine (SVM), multiple linear regression (MLR), random forest (RF), and back propagation neural network (BP), were used to predict the compressive strength of recycled brick powder foam concrete, and the PSO-BP model was found to have obvious advantages in terms of prediction accuracy and model stability. The experimental results and prediction models can provide experimental and theoretical references for the research and application of recycled brick powder foam concrete.

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Section: Introductionmentioning

confidence: 99%