Abstract
The concentric pushing method was used to study the bonding properties between polymer and concrete. This paper studied the influence of polymer density, environmental temperature, and moisture content of concrete between polymer and concrete on the bond strength. The results indicated that the bond failure of specimens occurred mainly when the polymer was pushed out. Furthermore, increasing the polymer density increases the bond strength at the polymer‐concrete interface but decreases as the moisture content of the concrete increases. The environmental temperature affects the curing time, and the bond strength increases with increasing temperature. Under the same condition, the bond strength was influenced by the roughness of the interface. This study provides references for the construction design and enhances polymer materials and matrix application for repairing cracks in concrete dams.
Highlights
Hydraulic structures are prone to cracks and concentrated leak channels during construction or operation
When repairing cracks in concrete dams, surface sealing, insertion, and grouting methods are generally used [1]. e grouting method is the best method to solve such problems. e grout used can be divided into cement grouting and chemical grouting [2,3,4]. e cement grouting method relies on the pumping pressure of the grouting equipment to fill the crack and act as the plugging slurry
The cement slurry converts to a brittle material, resulting in repeated cracking [5,6,7]. e chemical grouting method relies on the pressure of the equipment to pump the slurry to the cracks and fill the cracks through expansion force [8]
Summary
Received 2 June 2021; Revised 6 July 2021; Accepted 17 July 2021; Published 24 July 2021. E concentric pushing method was used to study the bonding properties between polymer and concrete. Is paper studied the influence of polymer density, environmental temperature, and moisture content of concrete between polymer and concrete on the bond strength. E results indicated that the bond failure of specimens occurred mainly when the polymer was pushed out. Increasing the polymer density increases the bond strength at the polymer-concrete interface but decreases as the moisture content of the concrete increases. E environmental temperature affects the curing time, and the bond strength increases with increasing temperature. The bond strength was influenced by the roughness of the interface. Is study provides references for the construction design and enhances polymer materials and matrix application for repairing cracks in concrete dams The bond strength was influenced by the roughness of the interface. is study provides references for the construction design and enhances polymer materials and matrix application for repairing cracks in concrete dams
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