Performance of ductile fibre-reinforced cementitious composite concrete frames under flexural loading

Singh, S. B.; Sivasubramanian, Madappa V. R.

doi:10.1680/coma.11.00017

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…The fourth paper by Singh and Sivasubramanian (2013) investigates the performance of a blend of polymers and concrete in flexural loading. These new materials are termed 'ductile fibre-reinforced cementitious composites' (DFRCC) and use relatively small volumes of short polymer fibres, such as polyethylene (PE) and poly-vinyl-alcohol (PVA), to provide both reinforcement and resistance to fracture.…”

Section: Construction Materialsmentioning

confidence: 99%

Editorial

Kent¹

2013

Proceedings of the Institution of Civil Engineers - Constructio

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As the hands of time wearily move forward the duty of writing the editorial for Construction Materials has again fallen on my desk and it is my pleasure to introduce the papers in this issue. Things are changing at Construction Materials and we recognise that concrete, while a major construction material, is not the only construction material and the emphasis is now on the broader field of construction materials. As a materials engineer, this is indeed heartening, worthwhile and reflects the changing world we live in.The actual materials themselves are also changing and new materials are both rare and destined to be low volume. Instead the major progress is in the area of blends, mixtures and composites of existing materials. These new materials combine the properties of two or more materials to give a new range of properties and to maximise their strengths and minimise their weaknesses. We will see more of these new blends being commercialised in the future as their properties are optimised.Another major change in the world of materials over the past years is the increasing concern for the environment and how our activities affect it. Sustainability (however you define it) is a major topic, and all materials and applications are now being scrutinised for their environmental impact and sustainability credentials. Construction materials are particularly affected because of the large volumes of materials and energy used in their production and use. This is not a problem that will go away and, if anything, will become more important as resources of all types become more valuable and elusive.These two themes, combinations and sustainability, have wideranging implications for construction materials and in some cases they can be combined to provide even more compelling benefits. They are both explored in this issue, which presents a wide variety of papers with something of interest to all who work in the area of construction materials.Opening the issue is a briefing by Hunter (2013) which discusses the standards for asphalt laying in the UK (not the standards of asphalt laying in the UK which is a very different subject). Standards is not the most exciting of subjects but they do define what most of us do and how we do it. Without well written and clear standards the job of being an engineer becomes much more difficult, if not impossible. Good standards give us a common language for discussion and enable us to communicate effectively with one another.Equally, poor standards hinder communication and lead to time being wasted and errors being made as we all try to define and discover what language we are using. Hunter makes an impassioned plea for clarity in current asphalt standards where his experience shows many areas for potential confusion and poor communication. The ability to assess the quality of asphalt laying by reference to a clear and unambiguous standard is essential for the diagnosis of asphalt failures, something which many of us see and feel on a regular basis. He concludes that the current UK standard ne...

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Section: Construction Materialsmentioning

confidence: 99%

Editorial

Kent¹

2013

Proceedings of the Institution of Civil Engineers - Constructio

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“…The ultimate strain level of ECC is 3–7%, which is significantly larger than the normal cement concrete [ 12 , 13 ]. Different types of discrete fibers, namely polyethylene (PE), polypropylene, polyvinyl alcohol (PVA) and steel, are randomly dispersed in the ECC matrix to enhance the tensile strength and achieve a ductile failure mechanism [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation on the Shear Behavior of Engineered Cementitious Composite Beams with Hybrid Fibers

Maheswaran

Chellapandian²,

Sivasubramanian³

et al. 2022

Materials

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The shear behavior of innovative engineered cementitious composites (ECC) members with a hybrid mix of polyvinyl alcohol (PVA) and polypropylene (PP) fibers is examined. The overall objective of the investigation is to understand the shear behavior of ECC beams with different mono and hybrid fiber combinations without compromising the strength and ductility. Four different configurations of beams were prepared and tested, including 2.0% of PP fibers, 2.0% of PVA fibers, 2.0% of steel fibers and hybrid PVA and PP fibers (i.e., 1% PP and 1% PVA). In addition to the tests, a detailed nonlinear finite element (FE) analysis was accomplished using the commercial ABAQUS software. The validated FE model was used to perform an extensive parametric investigation to optimize the design parameters for the hybrid-fiber-reinforced ECC beams under shear. The results revealed that the use of hybrid PVA and PP fibers improved the performance by enhancing the overall strength and ductility compared to the steel and PP-fiber-based ECC beams. Incorporating hybrid fibers into ECC beams increased the critical shear crack angle, indicating the transition of a failure from a brittle diagonal tension to a ductile bending.

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