Investigation of Bond Behavior of Polyparaphenylene Benzobisoxazole Fiber-Reinforced Cementitious Matrix-Concrete Interface

Sneed, Lesley; D’Antino, Tommaso; Carloni, Christian

doi:10.14359/51686604

Cited by 40 publications

(83 citation statements)

References 12 publications

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“…In this paper, the term FRCM composites will be used. Types of fibers commonly used in FRCM composites are carbon, glass, steel, polyparaphenylene benzobisoxazole (PBO), or aramid [2].…”

Section: Introductionmentioning

confidence: 99%

“…The bond behavior of FRP-concrete joints has been studied extensively using direct shear tests [20][21][22][23][24][25], and more recently this type of test has been used to study the behavior of FRCM composites bonded to concrete (e.g., single-lap [2,14,26], double-lap [27,28]). Direct shear tests of FRCM-concrete joints have been carried out to investigate the load response and failure mode of the bonded composite and to determine key aspects such as the load-carrying capacity of the interface and the interfacial shear stress-slip relation.…”

Section: Introductionmentioning

confidence: 99%

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Use of image correlation system to study the bond behavior of FRCM-concrete joints

et al. 2017

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This paper presents a non-contact measurement approach, based on digital photogrammetry, applied to the experimental study of the bond behavior of fiber reinforced cementitious matrix composite (FRCM) - concrete joints tested in single-lap direct shear tests. The use of digital photogrammetry techniques and traditional contact measurement approaches for determining displacement and strain are investigated and compared. The results show that measurements of strain in the fiber bundles determined using the image correlation system (ICS) correlate well with those obtained from electrical strain gauges. However, differences of 38% to 52% were observed between the maximum strain measured with either ICS or electrical strain gages attached to the fiber bundles and the maximum strain in the fiber bundles computed from the maximum applied load. ICS is also used to measure slip and strain of bare fiber bundles, and results show that the load distribution among fiber bundles is non-uniform. The proposed measurement approach shows higher spatial measurement resolution and increased accuracy compared to traditional contact approaches by enabling measurements in each fiber bundle and overcoming the need to attach additional elements to the tested specimen

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“…In this paper, the term FRCM composites will be used. Types of fibers commonly used in FRCM composites are carbon, glass, steel, polyparaphenylene benzobisoxazole (PBO), or aramid [2].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of image correlation system to study the bond behavior of FRCM-concrete joints

et al. 2017

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“…Various publications study the crack pattern in the TRC reinforcement as influenced as well by the bond between concrete and external reinforcement, as by the bond between fibres and matrix [2,11,24,30]. The crack development and evolution in the concrete substrate itself has been studied for short fibre ECC reinforcements [39,40], but to the knowledge of the authors not in detail for high fibre volume fraction TRC reinforcements.…”

Section: Introductionmentioning

confidence: 99%

Bending crack behaviour of plain concrete beams externally reinforced with TRC

2016

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This paper presents the experimental study of concrete beams in bending, externally strengthened with Textile Reinforced Cementitious materials (TRC) with varying contact area with the concrete. In order to study the pure influence of the TRC on the concrete substrate, only non-internally-reinforced concrete beams are considered. The crack pattern evolution is monitored with Digital Image Correlation, and the influence of the contact width between the concrete substrate and the external reinforcement is investigated. The results show that the TRC reinforcement has an important crack bridging capacity, and consequently that its application over the full beam width is beneficial for the loadbearing capacity and the limitation of the crack widths of the concrete beam.

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“…The experimental program and results are presented in detail in [20][21][22] and are summarized in this section for comparison with the numerical simulation presented in the next section.…”

Section: Experimental Programmementioning

confidence: 99%

“…The numerical approach adopted was calibrated and validated by the experimental results previously obtained by the authors on FRCM-concrete joints tested with a single-lap direct-shear set-up [20][21][22]. The numerical model of one of the specimens tested is shown in this paper.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of PBO FRCM-Concrete Joint Behavior using a Three-Dimensional Numerical Approach

Carloni¹,

D’Antino²,

Sneed³

et al.

Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing

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Fiber reinforced cementitious matrix (FRCM) composites represent an effective solution for strengthening and retrofitting existing reinforced concrete and masonry structures. The bond behavior between the FRCM composite and the support is of particular importance for the effectiveness of the strengthening intervention. In this paper the FRCM-concrete bond behavior is investigated using a three-dimensional numerical approach. The numerical model presented was calibrated and validated with a wide experimental programme previously conducted by the authors on PBO FRCM-concrete joints tested using the single-lap direct-shear test set-up. The results obtained from the numerical model of one of the specimens tested are shown in this paper. Good agreement between the experimental and numerical load responses and the strain profiles was obtained.

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Investigation of Bond Behavior of Polyparaphenylene Benzobisoxazole Fiber-Reinforced Cementitious Matrix-Concrete Interface

Cited by 40 publications

References 12 publications

Use of image correlation system to study the bond behavior of FRCM-concrete joints

Use of image correlation system to study the bond behavior of FRCM-concrete joints

Bending crack behaviour of plain concrete beams externally reinforced with TRC

An Investigation of PBO FRCM-Concrete Joint Behavior using a Three-Dimensional Numerical Approach

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