Long-term performance of single-lap joints: review, challenges and
prospects in civil engineering
Abstract
Compared with traditional technology, bonding technology is more
suitable for civil structure reinforcement because of its
cost-efficiency and superior mechanical properties. As one of the
simplest forms of adhesive joints, numerous studies have been conducted
on the performance of single-lap joints (SLJs). However, research on the
long-term performance of SLJs requires better organization and
comprehension. This paper aims to investigate the long-term performance
and optimization design of SLJs. The main factors influencing the
long-term performance of SLJs from both material and component levels
are discussed. The moisture diffusion mechanisms of bulk adhesives and
the degradation mechanisms of SLJs are explored. Moreover, the
optimization design of SLJs focuses on evaluating the overlap length,
adhesive layer thicknesses, and changes in adhesives along the overlap
length based on available literature. This paper can be employed to
improve the shear strength and long-term performance of SLJs and to
provide insights into their challenges and prospects.