Non-hypothetical projection pursuit regression for the prediction of hydration heat of Portland-cement-based cementitious system

Can Qin; Jingwei Gong; Gangchuan Xie; Jianxin He; Liang Liu; Haihua Yang; Chuanling Deng

doi:10.1016/j.heliyon.2023.e19471

Non-hypothetical projection pursuit regression for the prediction of hydration heat of Portland-cement-based cementitious system

Heliyon. 2023 Aug 28;9(9):e19471. doi: 10.1016/j.heliyon.2023.e19471. eCollection 2023 Sep.

Authors

Can Qin^{1

2}, Jingwei Gong^{1

2}, Gangchuan Xie^{1

2}, Jianxin He^{1

2}, Liang Liu^{1

2}, Haihua Yang^{1

2}, Chuanling Deng³

Affiliations

¹ College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang, 830052, PR China.
² Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Urumqi, 830052, PR China.
³ College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang, 830052, PR China.

Abstract

In this study, the non-hypothetical projection pursuit regression (NH-PPR) is proposed. The proposed NH-PPR model can predict the hydration heat based on the four cement phases, FA, SL, cement fineness and hydration time. The NH-PPR model is proposed by using the multiple layer iteration method and the non-hypothetical and non-parametric ridge functions to enhance accuracy and solve the problems caused by the parameter selection and the subjective hypothesis. The modeling data set is applied to train model, the testing data set is regressed and fitted into the model, and then the obtained results are compared with the BP model. To further validate the proposed model, another published data set is used to obtain a higher degree of confidence in the prediction. It is shown that the proposed model obtains the better accuracy, stability and versatility, and avoids the parameter selection and subjective hypothesis.

Keywords: Hydration heat; Iterative optimization method; Non-assumptive projection pursuit regression; Portland cement based cementitious system; Ridge function.