Experimental Study on Triaxial Compressive Mechanical Properties of Polypropylene Fiber Coral Seawater Concrete

Article Construction & Building Technology

Axial compressive behavior of seawater sea-sand coral aggregate concrete-filled circular FRP-steel composite tube columns

Gaofei Wang et al.

Summary: A new type of circular concrete-filled FRP-steel composite tube structure was designed to directly apply undisturbed seawater, sea sand and coral aggregates in ocean engineering. By conducting monotonic axial compression tests on 36 new circular SSCC-filled FRP-steel composite tube columns, it was found that increasing the number of FRP layers and decreasing the steel tube diameter-thickness ratio significantly improved the ultimate stress and strain of the specimens.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Article Engineering, Civil

Enhancement of Bond Performance of FRP Bars with Seawater Coral Aggregate Concrete by Utilizing Ecoefficient Slag-Based Alkali-Activated Materials

Bai Zhang et al.

Summary: This paper investigates the possibility of using alkali-activated materials (AAMs) in fiber-reinforced polymer (FRP) reinforced seawater coral aggregate concrete (CAC) structures. The results show that utilizing AAMs can improve bond strength and initial stiffness, as well as enhance the anchorage capacity of FRP bars.

JOURNAL OF COMPOSITES FOR CONSTRUCTION (2022)

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Article Construction & Building Technology

Mechanical properties of high-performance concrete under triaxial compression

Xiaojun Ke et al.

Summary: This paper investigated the mechanical properties of high-performance concrete (HPC) through experimental study. The results showed that the lateral confinement pressure effectively increased the triaxial compressive strength of the concrete, but also increased its brittleness. The failure criterion of the HPC was analyzed using the Drucker-Prager yield criterion and Kotsovos failure theory.

MAGAZINE OF CONCRETE RESEARCH (2022)

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Article Chemistry, Physical

Failure Criteria and Constitutive Relationship of Lightweight Aggregate Concrete under Triaxial Compression

Peihuan Ye et al.

Summary: This paper investigates the compression behavior and failure criteria of lightweight aggregate concrete (LAC) under triaxial loading. The research found that increasing lateral constraint leads to changes in failure patterns, from vertical splitting to oblique shearing and then to indistinct traces of damage. Stress-strain constitutive models of LAC under triaxial compression are recommended and correlate well with test results.

MATERIALS (2022)

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Article Construction & Building Technology