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Your search keyword '"Zhao, Xiao-Ling"' showing total 1,142 results
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1,142 results on '"Zhao, Xiao-Ling"'

166. A refined prediction method for the long-term performance of BFRP bars serviced in field environments

Author

Dong, Zhiqiang, Wua, Gang, Zhao, Xiao-Ling, and Wang, Zi-Ke

Subjects
Reinforced concrete -- Mechanical properties -- Thermal properties -- Analysis, Building materials durability -- Analysis, Temperature -- Analysis, Business, Construction and materials industries
Abstract

ABSTRACT A new kind of advanced composite reinforcement, basalt fiber reinforced polymer (BFRP) bars, has not yet been widely adopted by design codes/guidelines worldwide, likely due to the lack of [...]

Published
2017
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167. Effect of ultra-high strength steel on mitigation of non-ductile yielding of concrete-filled double-skin columns

Author

Farahi, Mojtaba, Heidarpour, Amin, Zhao, Xiao-Ling, and Al-Mahaidi, Riadh

Subjects
High strength steel -- Usage, Tubular steel structures -- Research, Business, Construction and materials industries
Abstract

ABSTRACT Concrete-filled tubular (CFT) sections, and the most recent configuration of these sections, concrete-filled double-skin tubular (CFDST) sections, can provide high strength in structural construction. In this study, an innovative [...]

Published
2017

174. Experimental investigation of the inelastic cyclic behavior of concrete filled double skin tubular beam-columns with corrugated inner skins and ultra-high-strength corner tubes

Author

Farahi, Mojtaba, Heidarpour, Amin, Lignos, Dimitrios G., Zhao, Xiao-Ling, and Al-Mahaidi, Riadh S.

Subjects
multiaxial loading, concrete-filled double-skin tubular beam-columns, full-scale experiments, Composite-steel concrete members, cyclic loading
Abstract

This paper presents the experimental results from nine full-scale concrete-filled double-skin tubular (CFDST) beam-columns. The test specimens exploited two fabrication strategies featuring either hollow steel inner skins with corrugated geometry or ultra-high-strength steel corner tubes to enhance the seismic performance of non-compact CFDST beam-columns for potential use in low-to-moderate seismicity regions. The effects of loading sequence, axial load ratio and cross-sectional geometry were investigated. The experimental results suggest that the current AISC specification may be used to predict the axial strength of the composite members with a relatively good accuracy. In the post-buckling range, conventional CFDST beam-columns and those with corrugated inner skins are prone to fracture at the corner welds of the built-up cross section. However, the latter exhibit up to two times larger drift capacities than their conventional CFDST counterparts prior to losing their axial load carrying capacity. Non-compact beam-columns retrofitted with ultra-high-strength steel corner tubes exhibit a 4% lateral drift demand without experiencing more than 25% flexural strength loss. The presence of ultra-high-strength steel increases the plastic hinge length of CFDST beam-columns by up to four times relative to that of CFDST beam-columns with corrugated inner skin, regardless of the employed loading history.

Published
2022
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184. Workability, strength, and shrinkage of ultra-high-performance seawater, sea sand concrete with different OPC replacement ratios.

Author

Saleh, Shameer, Li, Ying-Lei, Hamed, Ehab, Mahmood, Aziz Hasan, and Zhao, Xiao-Ling

Subjects
SEAWATER, HIGH strength concrete, SILICA fume, CONCRETE, MARINE resources, SAND
Abstract

An experimental investigation on the chemical, physical, mechanical, and shrinkage of seawater and sea sand-based ultra-high-performance concrete (UHP-SWSSC) with supplementary cementitious materials (SCM) (i.e. slag and silica fume) is reported. Several mixes were designed with varying proportions of SCMs (25%, 37.5%, 50%, and 62.5% of binder), aggregate source, and water-to-binder ratio. Heat evolution, density, workability, compressive strength development, and long-term autogenous and drying shrinkage of UHP-SWSSC were monitored. Seawater accelerates cement hydration as reflected in the heat evolution, and consequently, dictates the early-age strength, and autogenous shrinkage. SCM addition although limits the early-age strength development offers a comparable 90 days strength. The chloride content increases from marine resources and may limit the application to nonstructural components. Nonetheless, a UHP-SWSSC mix with 50% OPC replaced by 37.5% slag and 12.5% silica fume is recommended in this study, which can achieve satisfactory workability, long-term strength, and shrinkage properties. [ABSTRACT FROM AUTHOR]

Published
2023
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187. Long-term durability of basalt- and glass-fibre reinforced polymer (BFRP/GFRP) bars in seawater and sea sand concrete environment

Author

Wang, Zike, Zhao, Xiao-Ling, Xian, Guijun, Wu, Gang, Raman, R.K. Singh, Al-Saadi, Saad, and Haque, Asadul

Subjects
Polymers -- Properties, Business, Construction and materials industries
Abstract

ABSTRACT This paper presents a study on the long-term performance of basalt- and glass-fibre reinforced polymer (BFRP/GFRP) bars in seawater and sea sand concrete (SWSSC) environment. Accelerated corrosion tests were [...]

Published
2017
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188. Effect of creep strain on mechanical behaviour of ultra-high strength (Grade 1200) steel subject to cooling phase of a fire

Author

Azhari, Fatemeh, Heidarpour, Amin, Zhao, Xiao-Ling, and Hutchinson, Christopher R.

Subjects
High strength steel -- Analysis -- Models, Animal experimentation -- Analysis -- Models, Business, Construction and materials industries
Abstract

ABSTRACT This paper evaluates the mechanical behaviour of Grade 1200 ultra-high strength steel (UHSS) tube under a multi-phase loading scenario including fire and creep. To achieve this, two sets of [...]

Published
2017
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191. Fracture behaviour and microstructural evolution of structural mild steel under the multi-hazard loading of high-strain-rate load followed by elevated temperature

Author

Mirmomeni, Mahsa, Heidarpour, Amin, Zhao, Xiao-Ling, Hutchinson, Christopher R., Packer, Jeffrey A., and Wu, Chengqing

Subjects
Steel -- Analysis -- Mechanical properties, Business, Construction and materials industries
Abstract

ABSTRACT This paper presents the mechanical properties, microstructure evolution and fracture behaviour of structural mild steel subject to the multi-hazard loading scenario of post-impact-fire. Two-phase tensile tests were conducted on [...]

Published
2016
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