Assessment of compressive strength is crucial for ensuring the safety concrete structures. However, existing works mainly focus on wet rather than fully saturated underwater and neglect influences mix parameters. To this end, study develops a testing system to measure ultrasonic waves investigates influence water-cement (W/C) ratio (ranging from 0.35 0.54), sand-aggregate (S/A) 0.57 0.87), average diameter (Da) coarse aggregate 7.5 17.44) relationships between velocities pressure (P)...

Purpose This study aims to enhance the understanding of fiber-reinforced polymer (FRP) applications in partially confined concrete, with a specific focus on improving economic value and load-bearing capacity. The research addresses need for more comprehensive analysis non-uniform vertical strain responses precise stress–strain models FRP concrete. Design/methodology/approach DIC gauges were employed gather data during axial compression tests concrete specimens. Finite element using ABAQUS...

Abstract In cold regions, the coupling of freeze–thaw cycles and sulfate frequently impairs performance FRP‐bonded concrete, resulting in a shortened service life. Carbon fiber polymer (CFRP) glass (GFRP) are used to paste pre‐cracked concrete beams experiment, three unfavorable environments created: cycle, 10% solution erosion, erosion. This paper investigates durability FRP bonded using microscopic, mechanical dynamic modulus elasticity tests, as well post‐erosion damage values finite...

Fiber-reinforced polymer (FRP) confined concrete is regarded as an innovative and economical approach for structural repairation. Two typical materials [carbon fiber reinforced (CFRP) glass (GFRP)] are selected in this study to investigate the strengthen effect a severe environment. The resist ability of FRP-confined discussed when subjected coupled erosion between sulfate freeze-thaw cycles. Electron microscopy examines concrete's surface interior degradation during erosion. corrosion...

The evaluation of frost resistance varies with different reinforcement methods, but it is a hot research topic for concrete reinforced Fiber-Reinforced plastic (FRP). Freezing and thawing tests FRP-reinforced prisms cylinders are presented to simulate beams piers buildings in cold climates. To evaluate the specimens’ resistance, various techniques, morphological analysis, weight tests, relative dynamic modulus elasticity were used. Examined also variations stress–strain curves axial...

ABTRACT: Applications of Fiber-Reinforced Polymer (FRP) in Partially Confined Concrete: Improving Economic Value and Load-Bearing Capacity. However, there is still a need for more thorough analysis the non-uniform vertical strain response precise stress-strain models FRP partially confined concrete. In this study, we used Digital Image Correlation (DIC) gauges to collect data during axial compression tests on concrete specimens. Additionally, partial confinement modeled using Finite Element...

Abstract FRP-bonded concrete enhances the structural strength and extends service life, yet durability challenges remain pronounced. Carbon Fiber Reinforced Polymer (CFRP) Glass (GFRP) are employed to bond precast cracked beams. Three adverse environments established: freeze-thaw cycle, sulfate erosion, salt-freeze coupling erosion conditions. The degradation patterns of specimens under single coupled compared using electron microscopy, mass loss analysis, load-displacement curves, bottom...

Abstract Fiber-reinforced polymer (FRP) confined concrete is regarded as an innovative and economical approach for structural repairation. Two typical materials (carbon fiber reinforced (CFRP) glass (GFRP)) are selected in this study to investigate the strengthen effect a severe environment. The resist ability of FRP-confined discussed when subjected coupled erosion between sulfate freeze-thaw cycles. Electron microscopy examines concrete's surface interior degradation during erosion....

Bearing capacity and economic value are enhanced using fiber-reinforced polymer (FRP) partially-confined concrete. A continuous FRP partial confinement technology is examined in this study. The failure mechanism stress-strain model of partially confined concrete improved according to the existing fully research. That technology's reinforcement also studied. wrapping test used two materials: carbon fiber reinforced (CFRP) glass (GFRP). magnitude law strain various locations during...