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ORIGINAL RESEARCH article

Front. Mater.
Sec. Structural Materials
Volume 11 - 2024 | doi: 10.3389/fmats.2024.1365896
This article is part of the Research Topic Computational Intelligence in Infrastructure Materials Engineering View all articles

Dynamic modulus characteristics and prediction model of semi-flexible materials filled with high-performance cement paste

Provisionally accepted
Deyong Wang Deyong Wang 1Guoxun Li Guoxun Li 1Lingang Jiang Lingang Jiang 1Huaizhi Zhang Huaizhi Zhang 2*Jie Zhang Jie Zhang 1Xiaowei Si Xiaowei Si 2
  • 1 China First Highway Engineering Co., Ltd.,, Beijing, China
  • 2 Shenyang Jianzhu University, Shenyang, China

The final, formatted version of the article will be published soon.

    The dynamic modulus of asphalt mixture is an important factor in the design of asphalt pavement, and many scholars have proposed different models for estimating the dynamic modulus of asphalt mixture, but there are almost no studies on the prediction of the dynamic modulus of semi-flexible materials. In order to analyze and estimate the dynamic modulus of semi-flexible materials, we set up a high-performance cementitious paste (HPCP) semi-flexible material and a reference group Stone Mastic Asphalt (SMA-16) under multiple conditions, first measured its dynamic modulus in the laboratory, and analyzed the dynamic modulus characteristics of the material, and then used the equation the estimation equation proposed by Witczak et al. (Witczak1-37A) as a benchmark to introduce a new parameter, grouting mass ratio (Pb) to develop a Witczak-G prediction model to compare and validate the predicted dynamic modulus with the measured values. The results show that compared with SMA-16, HPCP semi-flexible material exhibits higher dynamic modulus and lower phase angle, and its temperature sensitivity and deformation resistance are significantly better than those of SMA-16. Under the influence of porosity and Pb factor, the dynamic modulus is positively correlated with both factors, and the phase angle increases first and then decreases, showing strong elastic properties. In this paper, we propose a dynamic modulus prediction model based on viscosity and Pb, Witczak-G, which predicts the highest coefficient of determination (R 2 ) of the predicted dynamic modulus as high as 0.99 after initial fitting and validation, which indicates that the Witczak-G model is suitable for predicting the dynamic modulus of semi-flexible materials injected with HPCP.

    Keywords: HPCP-infused semi-flexible materials, Dynamic modulus, phase angle, cement grout mass ratio, predictive model

    Received: 05 Jan 2024; Accepted: 08 Jul 2024.

    Copyright: © 2024 Wang, Li, Jiang, Zhang, Zhang and Si. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Huaizhi Zhang, Shenyang Jianzhu University, Shenyang, China

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