Analysis of Reinforced Concrete Beam Elements Impregnated with Ultra-High-Performance Fibers

Jul 26, 2023

Journal Texas Journal of Engineering and Technology

publisher Zien Journals

Issue vol 22

Volume 22

The manner of seismic elements made of Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) differs significantly from conventional concrete. However, limited research exists in the literature on the dynamic manner of UHPFRC seismic members due to their high cost. Limited element programs can reduce the need for experimental studies to develop design procedures for large-scale seismic elements. Validated analytical models can be utilised to investigate the impact of geometric changes, loading schemes, and reinforcement ratios on the seismic behaviour. This research employed a limited element program, specifically ABAQUS, to model a UHPFRC beam subjected to dynamic loading and evaluate the predictive accuracy of the numerical model. The material model parameters were determined based on uniaxial pressure and tensile tests. The findings from the numerical models demonstrate that the analytical model effectively predicts the dynamic behaviour of UHPFRC beams.

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Green Concrete: Ferrock Applicability and Cost- Benefit Effective Analysis

Feb 1, 2023

Journal ASEAN Journal for Science and Engineering in Materials

publisher Bumi Publikasi Nusantara

Issue 2

Volume 2 (2023)

This research aims to assess the viability and suitability of Ferrock as an alternative to concrete for constructing foundations. The study evaluates the performance of Ferrock in foundation applications, compares its costs with traditional concrete, and examines the benefits of using Ferrock for foundations. To achieve these objectives, the utilization of Staad Pro and Foundation software is done to analyze the performance of Ferrock foundations. A cost-benefit analysis, considering factors like material costs, construction techniques, and maintenance requirements to determine the economic feasibility of Ferrock as a substitute for concrete and the potential to reduce carbon emissions, and promote environmentally friendly construction practices is also done. The research findings indicate that Ferrock exhibits promising performance characteristics for building foundations. It demonstrates comparable strength to traditional concrete while offering potential environmental benefits. Although implementing Ferrock may require an initial investment, the long-term advantages of reduced maintenance costs and improved sustainability contribute to its overall value proposition.

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Application of ambient vibration experimental analysis on large structures

Feb 1, 2022

Journal International Journal of Advanced Multidisciplinary Research and Studies

publisher OPRA Publication

Issue 5

Volume 2

The ambient vibration measurement is a kind of output data-only dynamic testing that employs natural environmental stimulation sources like traffic and wind. Since input data cannot be used, an output-only modal analysis approach must be used for testing in an ambient vibration environment. When doing modal analysis using output-only data, it is necessary to use a specialized modal identification approach that can handle extremely tiny magnitudes polluted by noise. There are two modal analysis techniques used, and they are complimentary. In the frequency domain, we have the relatively straightforward peak picking (PP) approach, while in the time domain, we have the more complex stochastic subspace identification (SSI) method. This article discusses the use of experimental modal analysis and ambient vibration testing on major civil engineering constructions. These two examples are a 15-story reinforced concrete shear core building and a concrete-filled steel tubular arch bridge. The findings demonstrate that both methods are capable of accurately pinpointing the frequencies. In most circumstances, the stochastic subspace identification methodology provides more realistic mode shapes and can discover frequencies that would otherwise be overlooked by the peak selecting method.

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Properties evaluation of fiber reinforced polymers and their constituent materials used in structures – A review

Feb 10, 2021

Journal Materials today

publisher Materials today

Issue part 2

Volume 43

Abstract Competition in civil engineering markets usually imposes low-cost, low-density and environmentally resistant materials with minimum maintenance and extended service life features to withstand the undesired sever loading and aggressive environmental conditions. As a result, using advanced composite materials as reinforcing for many different structures has been developed acceptably in past decades through new construction and rehabilitation applications. “Fiber reinforced polymers” as composite materials are powerful strengthening technique for various structural applications and have been the main focus for many researchers in the latest years due to their aforementioned properties. FRPs technique has been successfully implemented for strengthening bridges, buildings, tunnels, silos, tanks, and underground infrastructures. FPRs have been conducted as high-performance materials owing to their advantages including light-weight, fatigue resistance, high tensile strength, anti-corrosion, and thermal insulation. This paper intends to review the design of FRP composites and the characteristics of their constituent materials. This review also provides a brief information about the potential of FRPs as an alternative to steel reinforcement in concrete structural members by providing evaluation of the mechanical properties of FRP composite materials in terms of compressive, shear, flexural and tensile strength against extreme loading and environmental conditions.

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