Numerical Study of FRP Reinforced Concrete Slabs at  Elevated Temperature

Adelzadeh, Masoud; Hajiloo, Hamzeh; Green, Mark F.

doi:10.3390/polym6020408

Cited by 27 publications

(13 citation statements)

References 14 publications

(21 reference statements)

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“…It was also seen that the strain still rose significantly for the specimens exposed to 120 • C, even though the temperature stopped increasing (stage 3). During the sustained loading and temperature period, defect evolution and chain scission processes continued to develop [5]. With respect to the unloading stage (stage 4), the specimens showed a linear decreasing trend and the residual strain can be found as the difference.…”

Section: Creep Behavior Of the Resin Matrixmentioning

confidence: 95%

“…As found by Wu et al [4], applying FRP as a pre-stressed member in structures is more effective than normal reinforcement. However, in most civil engineering applications, FRPs are very likely to be subjected to relatively high in-service temperatures, which could result in the deterioration of mechanical performance and threaten structural safety [5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Creep Behavior of Resin Matrix and Basalt Fiber Reinforced Polymer (BFRP) Plate at Elevated Temperatures

Xian

Rashid

2017

J. Compos. Sci.

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Pre-stressed fiber reinforced polymer (FRP) has great application potential in structural strengthening. However, the elevated temperature resistance of FRPs is always a key concern due to the poor thermal stability of its resin matrix. In this study, the effects of temperature on the creep behavior of the resin matrix and basalt fiber reinforced polymer (BFRP) was experimentally investigated. The tensile stresses were set at 2.6 MPa for the resin matrix and 522 MPa (35% of its ultimate tensile strength (f u )) for BFRP, and the exposure temperatures were 25 • C, 80 • C, 120 • C, and 160 • C. The short-term strain of the resin matrix and BFRP exposed to different exposure temperatures was measured. The variation of the thermal property and interlaminar shear strength (ILSS) of the BFRP were studied. The results indicated that molecular chain disruption and post-cure coexisted. The resin matrix is sensitive to the exposure temperatures, and a remarkable increase of the strain was observed when the exposure temperature exceeded its glass transition temperature (107.5 • C). The resin matrix fractured within 50 seconds when it was exposed to 160 • C. BFRP showed excellent temperature resistance even though the exposure temperature exceeded its glass transition temperature (123.7 • C). Sustained loading led to stress transferring to the basalt fiber in BFRP specimens, especially at elevated temperatures. Stress redistribution caused interfacial damage, and ILSS decreased by 0.5%, 13.6%, and 14.6% for 80 • C, 120 • C, and 160 • C exposure from its original value of 73.5 MPa. Dynamic mechanical thermal analysis (DMTA) was used to explain the post-curing and interface damage of BFRP.

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Section: Creep Behavior Of the Resin Matrixmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Creep Behavior of Resin Matrix and Basalt Fiber Reinforced Polymer (BFRP) Plate at Elevated Temperatures

Xian

Rashid

2017

J. Compos. Sci.

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“…International Journal of Polymer Science pyrolysis behavior under fire [59]. However, there is limited conclusive evidence available on the total behavior of FRP structural elements under fire [60,61].…”

Section: Prefabricated Polymer Elementsmentioning

confidence: 99%

Recent Progress in Polymer-Based Building Materials

Shen

Jiang

Lin

et al. 2020

International Journal of Polymer Science

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With the development of human society, the requirements for building materials are becoming higher. The development of polymer materials and their application in the field of architecture have greatly enhanced and broadened the functions of building materials. With the development of material science and technology, many functional materials have been developed. Polymer materials have many excellent properties compared with inorganic materials, and they can also be improved to enhance functional properties by blending or adding various additives (such as flame retardants, antistatic agents, and antioxidants). In this paper, polymer-based building materials are introduced with three classes according to the applications, that is, substrates, coatings, and binders, and their recent signs of progress in the preparations and applications are carefully demonstrated.

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“…In recent years, there have been numerous studies [18][19][20][21][22][23][24][25][26] analyzing the behavior of reinforced concrete joints. In particular, models with moment-curvature graphs are an interesting way to simulate the complex behavior of large structures [27].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Steel Reinforced Concrete (SRC) Joints

Belda

Irles

Segura

et al. 2019

Metals

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This paper presents a three-dimensional finite element model to confirm experimental tests carried out on steel reinforced concrete joints. The nonlinear behavior of this concrete is simulated, along with its reduced capability to resist large displacements in compression. The aim was to obtain the plastic behavior of reinforced concrete beams with a numerical model in the same way as obtained experimentally, in which the reduction of strength in the post-critical stage was considered to simulate behavior until structures collapsed. To do this, a nonlinear calculation was necessary to simulate the behavior of each material. Three numerical models provide a moment-curvature graph of the cross-section until collapse. Simulation of the structural elements is a powerful tool that avoids having to carry out expensive experimental tests. From the experimental results a finite element model is simulated for the non-linear analysis of steel reinforced concrete joints. It is possible to simulate the decreasing stress behavior of the concrete until reaching considerable displacement. A new procedure is discussed to capture the moment-curvature diagram. This diagram can be used in a simplified frame analysis, considering post-critical behavior for future research.Metals 2019, 9, 131 2 of 20 to analyze the real behavior of the beam from the elastic to plastic range and collapse. Load was defined as a prescribed displacement located in the center of the beam to know its plastic behavior. The first model, P03, was a 3.6 m long pinned beam with a concentrated load in the center, with a steel reinforcement of four bars (12 mm in diameter). The second model, P04, had the same reinforcement, but with the addition of a 2 m long HEB-100 cross-section in the central part. The third model, P05, was a reinforced concrete beam capable of supporting a similar load to the P04 model, but without the metallic section, with a steel reinforcement of two bars (16 mm in diameter) and two bars (20 mm in diameter) ( Figure 2). Our conclusions were similar to those reached by recognized studies with more complex frames in which loads were applied in a reverse direction, such as in reference [2]. Recent research, such as in reference [3], shows that high-strength reinforced concrete structures confined with tubular profiles and embedded metal profiles display the best behavior. Metals 2018, 8, x FOR PEER REVIEW 2 of 20chosen because of the test frame's characteristics. Different constructive solutions were considered to analyze the real behavior of the beam from the elastic to plastic range and collapse. Load was defined as a prescribed displacement located in the center of the beam to know its plastic behavior. The first model, P03, was a 3.6 m long pinned beam with a concentrated load in the center, with a steel reinforcement of four bars (12 mm in diameter). The second model, P04, had the same reinforcement, but with the addition of a 2 m long HEB-100 cross-section in the central part. The third model, P05, was a reinforced concrete beam capable...

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Numerical Study of FRP Reinforced Concrete Slabs at Elevated Temperature

Cited by 27 publications

References 14 publications

Creep Behavior of Resin Matrix and Basalt Fiber Reinforced Polymer (BFRP) Plate at Elevated Temperatures

Creep Behavior of Resin Matrix and Basalt Fiber Reinforced Polymer (BFRP) Plate at Elevated Temperatures

Recent Progress in Polymer-Based Building Materials

Numerical Simulation of Steel Reinforced Concrete (SRC) Joints

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