Research on Flexural Bearing Capacity of Reinforced Hollow Slab Beams Based on Polyurethane Composite Material Positive and Negative Pouring Method

Jin Li (), Tiancheng Zhou, Xiang Li (), Dalu Xiong, Chang De, Zhongmei Lu and Guanghua Li
Additional contact information
Jin Li: School of Transportation Civil Engineering, ShanDong JiaoTong University, Jinan 250357, China
Tiancheng Zhou: School of Transportation Civil Engineering, ShanDong JiaoTong University, Jinan 250357, China
Xiang Li: Shandong Hi-Speed Construction Management Group Co., Ltd., Jinan 250001, China
Dalu Xiong: Jinan Kingyue Highway Engineering Company Limited, Jinan 250220, China
Chang De: Jinan Kingyue Highway Engineering Company Limited, Jinan 250220, China
Zhongmei Lu: Jinan Kingyue Highway Engineering Company Limited, Jinan 250220, China
Guanghua Li: Shandong Huajian Engineering Testing Co., Ltd., Jinan 250132, China

Sustainability, 2022, vol. 14, issue 24, 1-17

Abstract: In order to explore the construction technology of prestressed steel strand–polyurethane cement composites for strengthening hollow slab beams, two reinforced test beams (L1, L2) and one unreinforced test beam (L0) were subjected to flexural static load tests. The deflection, ductility, stiffness, strain, and bearing capacity of each test beam were used to summarize the influence of different reinforcement techniques on the flexural performance of hollow slab beams. Research shows the prestressed steel strand–polyurethane composite material was well-bonded to the hollow slab beam, which effectively inhibits the development of concrete cracks and delays the damage process of hollow slab beams, that the reinforcement effect of the test beam L1 under the reverse pouring process was remarkable, and the bending performance of the test beam L2 under the forward pouring process of the simulated real bridge was good, which was much better than that of the unreinforced beam L0. The use of tensile prestressed steel strands and forward casting of polyurethane–cement composite materials effectively improved the flexural bearing capacity of the test beams, and this reinforcement process can be further extended to engineering applications.

Keywords: steel strand polyurethane cement; hollow slab beams; reinforcement process; bending test; bearing capacity (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/24/17030/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/24/17030/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:24:p:17030-:d:1008113

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().