The Mechanical and Environmental Performance of Fiber-Reinforced Polymers in Concrete Structures: Opportunities, Challenges and Future Directions

Sbahieh, Sami; Rabie, Mohamed; Ebead, Usama; Al-Ghamdi, Sami G.

doi:10.3390/buildings12091417

Cited by 18 publications

(17 citation statements)

References 116 publications

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“…Consequently, in the multiple-gelling material system, the reaction degree of the admixture can be obtained by modification of Equations ( 17)- (19). The specific Equations are shown in (20)- (22) [32,49,50…”

Section: Multiple-gelling Materials Systemmentioning

confidence: 99%

“…In recent years, fiber-reinforced concrete has attracted the interest of researchers. It is a new type of cement-based composite material with concrete as the matrix and noncontinuous short fibers as the reinforcing material [17][18][19][20][21][22][23]. It has been successfully used in highways, bridges, dams, and residential buildings for its excellent crack resistance and toughening, impact resistance, shrinkage limitation, bending and tensile resistance, freeze-thaw resistance, and seepage resistance [21].…”

Section: Introductionmentioning

confidence: 99%

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Resistivity Prediction Model for Basalt–Polypropylene Fiber-Reinforced Concrete

Niu

Zhang

et al. 2022

Buildings

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As a new cement-matrix composite material, fiber-reinforced concrete performs excellently in freeze–thaw resistance, tensile resistance, and seepage resistance. Since resistivity can be used to evaluate the performance of concrete, the resistivity of basalt–polypropylene fiber-reinforced concrete (BPFRC) was investigated in this study. Various parameters such as fiber type, fiber content, and water–binder ratio were also analyzed. The resistivity of the BPFRC was tested by an improved two-electrode alternating current (AC) method, and the differences in resistivity were analyzed using scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP). The results showed that adding fiber affected the resistivity of the BPFRC, and the basalt fiber had a more significant effect than the polypropylene fiber. The resistivity of the BPFRC was sensitive to the water–binder ratio, which showed a negative correlation. In addition, a 365-day resistivity model for the BPFRC was established by considering variables such as fiber, water–binder ratio, ambient temperature, and ambient relative humidity. The hydration equations of various cementitious materials were derived, and a time-varying resistivity model for the BPFRC was developed. Finally, the established resistivity model of the BPFRC lays a foundation for the further building of the relationship between resistivity and BPFRC performance.

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Section: Multiple-gelling Materials Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Resistivity Prediction Model for Basalt–Polypropylene Fiber-Reinforced Concrete

Niu

Zhang

et al. 2022

Buildings

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“…Queueing networks are a pervasive and widely applied modelling framework in analysing and optimising MHS across diverse operational contexts. This modelling approach is instrumental in comprehensively assessing and refining MHS performance by considering a spectrum of operational considerations [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

A Closed Queueing Networks Approach for an Optimal Heterogeneous Fleet Size of an Inter-Facility Bulk Material Transfer System

Amjath,

Kerbache,

Smith

2024

Logistics

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Background: This study addresses optimising fleet size in a system with a heterogeneous truck fleet, aiming to minimise transportation costs in interfacility material transfer operations. Methods: The material transfer process is modelled using a closed queueing network (CQN) that considers heterogeneous nodes and customised service times tailored to the unique characteristics of various truck types and their transported materials. The optimisation problem is formulated as a mixed-integer nonlinear programming (MINLP), falling into the NP-Hard, making exact solution computation challenging. A numerical approximation method, a modified sequential quadratic programming (SQP) method coupled with a mean value analysis (MVA) algorithm, is employed to overcome this challenge. Validation is conducted using a discrete event simulation (DES) model. Results: The proposed analytical model tested within a steel manufacturing plant’s material transfer process. The results showed that the analytical model achieved comparable optimisation of the heterogeneous truck fleet size with significantly reduced response times compared to the simulation method. Furthermore, evaluating performance metrics, encompassing response time, utilisation rate, and cycle time, revealed minimal discrepancies between the analytical and the simulation results, approximately ±8%, ±8%, and ±7%, respectively. Conclusions: These findings affirm the presented analytical approach’s robustness in optimising interfacility material transfer operations with heterogeneous truck fleets, demonstrating real-world applications.

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“…In recent years, polymer composite materials have been widely used as external reinforcement [ 19 , 20 , 21 , 22 , 23 , 24 ]. This technology for strengthening and repairing existing structural elements has shown effectiveness in various elements, including beams [ 25 , 26 ], columns [ 27 , 28 , 29 ], slabs [ 30 , 31 ], and others.…”

Section: Introductionmentioning

confidence: 99%

Strength of Compressed Reinforced Concrete Elements Reinforced with CFRP at Different Load Application Eccentricity

et al. 2022

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Currently, many studies are devoted to the use of polymer composite materials to increase the strength and stability of concrete elements. In compressed reinforced concrete elements, the bearing capacity depends on the eccentricity of the external application of the external force and the corresponding stress-strain state, as well as the location and number of composite materials glued to the surface of the structure. The choice of a scheme for placing composite materials depending on the stress state of the structure is an urgent scientific problem. At the same time, the issue of central compression and the compression of columns with large eccentricities has been well studied. However, studies conducted in the range of average eccentricities often have conflicting results, which is the problem area of this study. The primary aim of this study was to increase the strength and stiffness of compressed reinforced concrete elements reinforced with composite materials, as well as a comparative analysis of the bearing capacity of ten different combinations of external longitudinal, transverse, and combined reinforcement. The results of testing 16 compressed columns under the action of various eccentricities of external load application (e0/h = 0; 0.16; 0.32) are presented. It is shown that the use of composite materials in strengthening structures increases the bearing capacity up to 41%, and the stiffness of the sections increases up to 30%. Based on the results of the study, recommendations are proposed for improving the calculation method for inflexible columns reinforced in the transverse direction, which take the work of concrete under the conditions of a three-dimensional stress state into consideration.

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The Mechanical and Environmental Performance of Fiber-Reinforced Polymers in Concrete Structures: Opportunities, Challenges and Future Directions

Cited by 18 publications

References 116 publications

Resistivity Prediction Model for Basalt–Polypropylene Fiber-Reinforced Concrete

Resistivity Prediction Model for Basalt–Polypropylene Fiber-Reinforced Concrete

A Closed Queueing Networks Approach for an Optimal Heterogeneous Fleet Size of an Inter-Facility Bulk Material Transfer System

Strength of Compressed Reinforced Concrete Elements Reinforced with CFRP at Different Load Application Eccentricity

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