Research on innovative preparation and performance of semi flexible pavement materials

Chen Songqiang; Zhou Jian; Wu Xi; Chen Zining

Case Studies in Construction Materials (Jul 2024)

Research on innovative preparation and performance of semi flexible pavement materials

Chen Songqiang,
Zhou Jian,
Wu Xi,
Chen Zining

Affiliations

Chen Songqiang: Department of Civil Engineering, School of Engineering, Hangzhou City University, Hangzhou, 310015, Zhejiang, China; Zhejiang Engineering Research Center of Intelligent Urban Infrastructure, Hangzhou City University, Hangzhou, Zhejiang 310015, China; Zhejiang University Balance Building Research Center of Zhejiang University, Hangzhou, Zhejiang 310058, China
Zhou Jian: Department of Civil Engineering, School of Engineering, Hangzhou City University, Hangzhou, 310015, Zhejiang, China; Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou City University, Hangzhou 310015, China
Wu Xi: Department of Civil Engineering, School of Engineering, Hangzhou City University, Hangzhou, 310015, Zhejiang, China; Zhejiang Engineering Research Center of Intelligent Urban Infrastructure, Hangzhou City University, Hangzhou, Zhejiang 310015, China; Corresponding author at: Department of Civil Engineering, School of Engineering, Hangzhou City University, Hangzhou, 310015, Zhejiang, China.
Chen Zining: China Road and Bridge Corporation, Beijing 100011, China

Journal volume & issue: Vol. 20
p. e03050

Abstract

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Semi-flexible concrete has been utilized in highway engineering due to its exceptional pavement performance. This study investigates the proportions of semi-flexible grout, the porosity of asphalt mixture, and the performance of semi-flexible concrete. Initially, 18 sets of semi-flexible grouting materials were proposed through an orthogonal test, resulting in the following material ratio: (cement: mineral powder): water cement ratio: sand cement ratio: Swelling agent: water reducer: flocculant = (0.85:0.15):0.45:0.2:0.04:0.001:0.005. Subsequently, the impact of the 2.36 mm sieve passing rate on the air void of SFAC-13 and SFAC-16 mixtures was analyzed, and a relationship between them was established. Observation of the semi-flexible concrete section and analysis of the grouting rate indicated that the developed grouting material effectively fills the gaps in the asphalt mixture. Lastly, the pavement performance of semi-flexible concrete was compared with SMA-13 asphalt mixture. The results demonstrate that semi-flexible composite concrete exhibits outstanding dynamic modulus, crack resistance, deformation resistance, water stability, and low-temperature performance. Moreover, the material properties of SFAC-13 are akin to those of SFAC-16.

Published in Case Studies in Construction Materials

ISSN: 2214-5095 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/case-studies-in-construction-materials

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