Investigation on Bond Behavior between Self-compacting Rubberized Concrete and Rectangular Steel Tubes

Ke, Xiaojun; Tang, Zhukai; Shen, Jianzeng; Tao, Yanying

doi:10.1007/s12205-022-1998-9

Cited by 6 publications

(1 citation statement)

References 39 publications

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“…16 The lowest limit of the bonding strength is given in the standards of many countries. [17][18][19][20] In recent years, the research has been extended to the bonding properties of stainless steel tubes, 21 recycled concrete, 22,23 selfcompacting concrete, 24,25 corroded steel, 26 etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on interfacial bonding performance of high‐strength steel pipe and surrounding concrete/grout for assembled composite columns

Zhu,

Wang

2023

Structural Concrete

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High‐strength steel pipe joints are proposed for assembled composite columns. The steel pipe extends into the upper and lower prefabricated columns and is anchored by poured concrete or grout to realize the connection of the prefabricated columns. Bonding performance of high‐strength steel pipe and surrounding concrete/grout is critical to the joint reliability. Steel pipe push‐out test was carried out, considering parameters of steel pipe section specification, bonding length, bonding material, and outer wall treatment of the steel pipe. Comparative analysis of measured load–displacement/slip curves and calculated bond strength were conducted. Bonding length of 600 mm could provide sufficient bond strength. Increasing bonding length could delay the slippage, but the bond strength decreased. High‐strength grout significantly increased the peak load size. The slenderness ratio and diameter–thickness ratio of the steel pipe had no obvious influence on the bonding performance. Steel pipe with D114*25 section obtained higher bonding strength with smaller ratio of bonding area to cross‐sectional area. Spiral ribs welded to the outer wall of the steel pipe could effectively improve the bonding strength and delay the interface slip. With easy construction and reliable performance, spiral ribs were recommended to be applied in prRactical projects.

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