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Author:

Liu, Y. (Liu, Y..) | Li, Y. (Li, Y..) | Mu, J. (Mu, J..) | Li, H. (Li, H..) | Shen, J. (Shen, J..)

Indexed by:

EI Scopus SCIE

Abstract:

This paper used machine learning to model the prediction of creep and the analysis of characteristic factors for concrete containing supplementary cementitious materials (SCM). First, a creep database covering thirteen input parameters and one output parameter was developed. Then, based on this database, Linear Regression (LR), Support Vector Regression (SVR), Random Forest (RF) and Extreme Gradient Boosting (XGB) models were used to establish creep compliance models. Finally, the sensitivity analysis of each input parameter based on the shapley additive explanation (SHAP) model was performed to investigate the influence of each parameter on the prediction results of creep. The results show that the extreme gradient boosting (XGB) model can predict the creep compliance of SCM concrete very well. The creep compliance is the result of the combined effect of numerous positively and negatively correlated characteristic parameters. Among the many characteristic parameters, the stress-to-strength ratio is the most important factor affecting the prediction of creep. The creep compliance of concrete is positively correlated with cement content, while it is negatively correlated with silica fume (SF) content, and shows a negative and then positive change with slag and fly ash (FA) content. The creep tendency is smaller when the slag content is about 25% or the FA content is about 20%. Meanwhile, the interaction interval between different SCM admixtures and cement content differed in concrete creep prediction. © 2023 Elsevier Ltd

Keyword:

Creep Machine learning Concrete Supplementary cementitious materials

Author Community:

  • [ 1 ] [Liu Y.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, China
  • [ 2 ] [Li Y.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, China
  • [ 3 ] [Mu J.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, China
  • [ 4 ] [Li H.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, China
  • [ 5 ] [Shen J.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, China

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Source :

Construction and Building Materials

ISSN: 0950-0618

Year: 2023

Volume: 392

7 . 4 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:26

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 26

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 13

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