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Author:

Ji, J. (Ji, J..) | Li, J. (Li, J..) | Wang, J. (Wang, J..) | Suo, Z. (Suo, Z..) | Li, H. (Li, H..) | Yao, H. (Yao, H..)

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Scopus SCIE

Abstract:

In order to study the influence of different factors on the early strength of the cold recycled emulsified asphalt mixtures, 16 different types of cold recycled mixtures were designed and produced, which were combined with different cement content, water content, and cement-water ratio. The indirect tensile strength (IDT), compressive strength (UCS), tensile strength at 15°C (TS), and indirect tensile strength ratio (ITSR) tests were used to test the early strength of the cold recycled mixture. The variance analysis method was utilized to analyze the influence of the single factor on the early strength of the cold recycled mixture. The results show that appropriate cement-water ratio content can effectively improve the early strength of cold recycled mixtures. According to the Spearman correlation coefficient and comparison of each evaluation indicator, IDT and ITSR are significantly affected by various factors, and the results are relatively stable and well-differentiated, which is recommended as indicators of early strength evaluation. Cement-water ratio is recommended as the main control factor to control the early strength of the cold recycled emulsified asphalt mixtures. The optimal cement-water ratio ranges from 0.6 to 1.0, while the cement content is controlled from 1.2% to 1.5% and the water content from 3.8% to 4.3%. This study is of great significance for promoting the design of emulsified asphalt cold regenerative mixture with cement-water ratio and improving and accelerating its early strength development.  © 2023 American Society of Civil Engineers.

Keyword:

Early strength Cold recycled mixture Variance analysis Cement-water ratio Evaluation index Cold recycled emulsified asphalt

Author Community:

  • [ 1 ] [Ji J.]School of Civil and Transportation Engineering, Beijing Univ. of Civil Engineering and Architecture, Beijing, 100044, China
  • [ 2 ] [Ji J.]Collab. Innov. Ctr. of Ener. Conserv. Emission Reduction and Sustainable Urban-Rural Devmt. in Beijing, Beijing, 100044, China
  • [ 3 ] [Li J.]School of Civil and Transportation Engineering, Beijing Univ. of Civil Engineering and Architecture, Beijing, 100044, China
  • [ 4 ] [Wang J.]School of Civil and Transportation Engineering, Beijing Univ. of Civil Engineering and Architecture, Beijing, 100044, China
  • [ 5 ] [Wang J.]Collab. Innov. Ctr. of Ener. Conserv. Emission Reduction and Sustainable Urban-Rural Devmt. in Beijing, Beijing, 100044, China
  • [ 6 ] [Suo Z.]School of Civil and Transportation Engineering, Beijing Univ. of Civil Engineering and Architecture, Beijing, 100044, China
  • [ 7 ] [Suo Z.]Collab. Innov. Ctr. of Ener. Conserv. Emission Reduction and Sustainable Urban-Rural Devmt. in Beijing, Beijing, 100044, China
  • [ 8 ] [Li H.]School of Humanities, Beijing Univ. of Civil Engineering and Architecture, Beijing, 100044, China
  • [ 9 ] [Yao H.]Beijing Key Laboratory of Traffic Engineering, College of Metropolitan Transportation, Faculty of Architecture, Civil and Transportation Engineering, Beijing Univ. of Technology, No. 100, Pingleyuan, Chaoyang, Beijing, 100124, China

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Source :

Journal of Materials in Civil Engineering

ISSN: 0899-1561

Year: 2023

Issue: 5

Volume: 35

3 . 2 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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