Comparative Study of Different Cement-Based Inorganic Pastes towards the Development of FRIP Strengthening Technology

Dai, Jian‐Guo; Munir, Sarfraz; Zhu, Ding

doi:10.1061/(asce)cc.1943-5614.0000420

Cited by 45 publications

(17 citation statements)

References 37 publications

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“…A comprehensive test program has been conducted to evaluate the performance of different cement-based inorganic pastes towards the development of fiber reinforced inorganic polymer (FRIP) composite (Dai et al 2014) The bond between the strengthening material and the concrete substrate is the key determining factor for the effectiveness of any strengthening systems. It varies and depends on the characteristic of each strengthening system.…”

Section: Introductionmentioning

confidence: 99%

Investigation of The Bond Behaviour Between PBO-FRCM Strengthening Material and Concrete

Tran

Stitmannaithum

Ueda

2014

ACT

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Fiber reinforced cementitious mortar (FRCM) systems, innovative strengthening systems, for repairing and strengthening concrete and masonry structures are an alternative option to traditional techniques such as fiber reinforced polymers (FRPs), steel plated bonding, and section enlargement. In this paper, a FRCM strengthening system made of polypara phenylene benzobisoxazole (PBO) fiber mesh embedded in cementitious matrix and bonded to concrete is investigated. There are two main parts in this paper: (i) the effective bond length of PBO mesh in PBO-FRCM system and (ii) the bond stress-slip relationship between PBO mesh and concrete substrate. An experimental program of single pull-out shear tests for the PBO-FRCM system is designed and conducted to verify the above two purposes. The results of this study can be used to estimate the effective bond length of PBO mesh in PBO-FRCM systems and also investigate if the debonding phenomenon occurs in the cementitious matrix or at the fiber and matrix interface. The comparison between the PBO-FRCM system and the ordinary FRP system is also discussed.

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Section: Introductionmentioning

confidence: 99%

Investigation of The Bond Behaviour Between PBO-FRCM Strengthening Material and Concrete

Tran

Stitmannaithum

Ueda

2014

ACT

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“…However, the bonding behaviour at the FRP-to-concrete interface may deteriorate due to environmental factors, such as moisture, high temperature and fire [8,9] because of the organic property of the epoxy material. Therefore, some scholars have attempted to utilize inorganic cementitious materials to replace the epoxy resin to develop new fibre composite systems, such as dry fibre sheets bonded with cementitious materials [10][11][12][13][14][15], fibre-reinforced inorganic polymer (FRIP) composites [16,17] and textile reinforced mortars (TRM) [18][19][20][21] for strengthening RC members. The advantages of the inorganic bonding materials are their high resistance to ultraviolet (UV), reduced environmental impact, better resistance to elevated temperature and moisture, as well as better compatibility with the substrate concrete.…”

Section: Introductionmentioning

confidence: 99%

Flexural behaviour of reinforced concrete beams strengthened with a composite reinforcement layer: BFRP grid and ECC

Zheng

Wang

Brigham

2016

Construction and Building Materials

140

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. strengths. An analytical model is also presented to predict the load-deflection responses of the strengthened beams, which was validated through comparisons with the test results.

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“… and Bolander and Berton . Researchers such as Kesner et al , Dai et al and Afefy and Hussein have been experimenting with the use of short fibres and cement‐based materials for some time now. Badanoiu conducted a study to improve the bond between carbon fibres and cementitious matrices using dry fibre fabrics.…”

Section: Introductionmentioning

confidence: 99%

“…The results of this study allow the effective anchorage length to be estimated and provide the evidence that debonding occurs at the fibres/matrix interface after a considerable fibres/matrix slip. In addition to these findings, many researchers have focused on studying the effect of bonding between the additional strengthening layer and the concrete surface Angelo et al , Dai et al , and Orosz et. al.…”

Section: Introductionmentioning

confidence: 99%

Structural performance of continuous RC slabs strengthened in negative moment regions with a mineral‐based composite

Atta

Zaher

Etman

2016

Structural Concrete

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An experimental programme was proposed and carried out to assess the effectiveness of the mineral-based composite (MBC) technique for the flexural strengthening of negative moment regions in continuous reinforced concrete slabs. In addition to the testing of the two reference specimens, the experimental programme included the testing of nine continuous RC slab specimens with different strengthening techniques, namely, using ordinary steel bars and MBC material. This experimental programme was conducted to study the failure modes, the load-deflection behaviour and the failure loads. Furthermore, we present and describe a comparative study between the two strengthening techniques, namely, steel reinforcing bars with MBC or steel bars with epoxy mortar. Based on the experimental results presented, both strengthening techniques for continuous slabs are evidently efficient. In this study the measured results for the average crack spacing were compared with the limits stipulated in CEB-FIP code 1990 and the failure load calculations were extended with an analytical approach based on the ultimate theory for the failure load calculation. In conclusion, the results obtained from the analytical model are in agreement with the experimental results.

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Comparative Study of Different Cement-Based Inorganic Pastes towards the Development of FRIP Strengthening Technology

Cited by 45 publications

References 37 publications

Investigation of The Bond Behaviour Between PBO-FRCM Strengthening Material and Concrete

Investigation of The Bond Behaviour Between PBO-FRCM Strengthening Material and Concrete

Flexural behaviour of reinforced concrete beams strengthened with a composite reinforcement layer: BFRP grid and ECC

Structural performance of continuous RC slabs strengthened in negative moment regions with a mineral‐based composite

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