Abstract
This paper presents a series of tests on sea sand concrete-filled stainless steel tubular (SSCFST) stub columns under axial compression, where the main test parameters include type of fine aggregates (river sand, desalted sea sand and sea sand), steel ratio, and concrete strength. The failure mode, axial load versus axial shorten response, cross-sectional strength of the SSCFST specimens are investigated and compared with those of traditional composite columns with normal concrete. The confinement effect between stainless tube and the sea sand concrete is also evaluated. High strength and good ductility was observed for the tested SSCFST stub columns. In general, when being used as the concrete core in a composite column, differences of confinement behaviour between sea sand concrete and normal concrete are not significant, indicating the potential adoption of SSCFST columns in practice.
Highlights
With the aim of reducing the consumption of the river sand needed for making concrete mixture and advancing the sustainability of environment, sea sand can be adopted as an alternative aggregate in concrete mixture
This paper conducted a series of tests on the sea sand concrete-filled stainless steel tubular (SSCFST) stub columns under axial compression
A total of 24 circular concrete-filled stainless steel tubular (CFSST) stub columns were tested under axial compression
Summary
With the aim of reducing the consumption of the river sand needed for making concrete mixture and advancing the sustainability of environment, sea sand can be adopted as an alternative aggregate in concrete mixture. The chloridion in sea sand might significantly aggravate the corrosion of structural steel. Materials with high corrosion resistance are required to apply with sea sand concrete, such as stainless steel. Sea sand concrete-filled stainless steel tube has attracted expanding attention due to its environmentally friendly benefits [1, 2]. Some experimental studies on concrete-filled stainless steel tubes were carried out by various researchers [3-7], the research on sea sand concrete-filled steel tubes is still not sufficient. This paper conducted a series of tests on the sea sand concrete-filled stainless steel tubular (SSCFST) stub columns under axial compression. The failure mode, axial load versus axial displacement response, and ultimate strength of SSCFST stub columns were experimentally investigated, and the feasibility of using sea sand concrete to replace the river sand concrete in concrete-filled steel tube was examined
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
