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Influence of accelerated curing on the compressive strength of polymer-modified concrete

Izhar AHMAD; Kashif Ali KHAN; Tahir AHMAD; Muhammad ALAM; Muhammad Tariq BASHIR

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5,   Pages 589-599 doi: 10.1007/s11709-022-0789-1

Abstract: Furthermore, in designing concrete structures, compressive strength is the most significant of all parameterseffort has been made in this study to develop mathematical models for predicting compressive strength of concreteThe compressive strength of EVA-modified concrete was studied by incorporating various concentrationsBased on the results of compressive strength test, it was concluded that the strength of EVA-modifiedThis research work may help in understanding the role of EVA as a viable material in polymer-based cement

Keywords： compressive strength prediction     polymer-modified concrete     linear regression fit     early age strength    

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GO-modified flexible polymer nanocomposites fabricated via 3D stereolithography

Chi Him Alpha Tsang, Adilet Zhakeyev, Dennis Y.C. Leung, Jin Xuan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 736-743 doi: 10.1007/s11705-019-1836-x

Abstract: The material properties of the resulting polymer was characterized and tested.The mechanical strength, stiffness, and the elongation of the resulting polymer decreased with the addition

Keywords： graphene oxide     polymer     flexible     3D printing     stereolithography    

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Experimental investigation on freeze−thaw durability of polymer concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1038-1046 doi: 10.1007/s11709-021-0748-2

Abstract: Assessing the durability of concrete is of prime importance to provide an adequate service life and reduceFreeze–thaw is one such test that indicates the ability of concrete to last a long time without a significantIn this study, the freeze–thaw resistance of polymer concrete containing different polymer contents wasResults showed that polymer concrete (PC) specimens prepared with higher dosages of polymer contentsIt is also indicated that the performance of high-strength concrete containing air-entraining admixture

Keywords： durability test     freeze-thaw resistance     polymer concrete     residual compressive strength     ASTM C666-15    

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Fatigue shear performance of concrete beams reinforced with hybrid (glass-fiber-reinforced polymer+ steel

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 576-594 doi: 10.1007/s11709-021-0728-6

Abstract: Reinforced concrete beams consisting of both steel and glass-fiber-reinforced polymer rebars exhibitFor specimens that failed by fatigue shear, all the glass-fiber-reinforced polymer stirrups and someThe fatigue strength of the glass-fiber-reinforced polymer stirrups in the specimens was considerablytests on the glass-fiber-reinforced polymer bar, and the failure modes were different.Glass-fiber-reinforced polymer stirrups were subjected to fatigue tension and shear, and failed owing

Keywords： fatigue     shear     hybrid stirrups     hybrid reinforcement     fiber-reinforced polymer    

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Experimental and statistical investigation of a new concrete-composite beam with encased polymer tube

Abdelmadjid SI SALEM,Souad AIT TALEB,Kamal AIT TAHAR

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 154-162 doi: 10.1007/s11709-015-0296-8

Abstract: A new concrete-composite beam with high mechanical performances to weight ratio is developed in thisThe proposed design technique consists to embed a cylindrical polymer tube wrapped by a GFRP Jacket inthe mechanically ineffective concrete tensile zone.the improvement in terms of strength and ductility of such design compared to conventional reinforced concrete

Keywords： design     GFRP-Jacket     polymer tube     test     reliability analysis    

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Structural performance of a façade precast concrete sandwich panel enabled by a bar-type basalt fiber-reinforcedpolymer connector

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 122-137 doi: 10.1007/s11709-022-0894-1

Abstract: In this study, a novel diagonally inserted bar-type basalt fiber reinforced polymer (BFRP) connectorproposed, aiming to achieve both construction convenience and partially composite behavior in precast concreteFirst, pull-out tests were conducted to evaluate the anchoring performance of the connector in concreteprimarily indicated that 1) the bar-type BFRP connector can achieve a reliable anchorage system in concrete

Keywords： precast concrete sandwich panel     basalt fiber reinforced polymer     pull-out performance     shear performance    

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Enhancing compressive strength and durability of self-compacting concrete modified with controlled-burnt

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2,   Pages 161-174 doi: 10.1007/s11709-021-0796-7

Abstract: In sugar industries, the growing amount of sugarcane bagasse ash (SBA), a byproduct released after burning bagasse for producing electricity, is currently causing environmental pollution. The residual ash displays a pozzolanic potential; and hence, it has potential as a cement addictive. This study focuses on enhancing suitability of SBA through incorporating ground blast furnace slag (BFS) in manufacturing self-compacting concretes (SCCs). For this purpose, SBA was processed by burning at 700 °C for 1 h, before being ground to the cement fineness of 4010 cm2/g. SCC mixtures were prepared by changing the proportions of SBA and BFS (i.e., 10%, 20%, and 30%) in blended systems; and their performance was investigated. Test results showed that the presence of amorphous silica was detected for the processed SBA, revealing that the strength activity index was above 80%. The compressive strength of SCC containing SBA (without BFS) could reach 98%−127% of that of the control; combination of SBA and 30% BFS gets a similar strength to the control after 28 d. Regarding durability, the 10%SBA + 30%BFS mix exhibited the lowest risk of corrosion. Moreover, the joint use of SBA and BFS enhanced significantly the SCC’s sulfate resistance. Finally, a hyperbolic formula for interpolating the compressive strength of the SBA-based SCC was proposed and validated with error range estimated within ±10%.

Keywords： sugarcane bagasse ash     self-compacting concrete     compressive strength     sulfate resistance     water absorption    

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Influence of morphology on high-temperature rheological properties of bitumen modified with styrene-butadiene-styrene

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 806-819 doi: 10.1007/s11709-021-0731-y

Abstract: Different microstructures of the same polymer-modified bitumen (PMB) were obtained by subjecting thebitumen modified with styrene-butadiene-styrene (SBS) copolymer to isothermal annealing at various temperaturesThe effects of the morphology on the rheological properties of SBS-modified bitumen were investigated

Keywords： polymer     bitumen     microstructure     rheology     viscoelasticity    

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Shear behavior of ultra-high-performance concrete beams prestressed with external carbon fiber-reinforcedpolymer tendons

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1426-1440 doi: 10.1007/s11709-021-0783-z

Abstract: The ultra-high-performance concrete (UHPC) and fiber-reinforced polymer (FRP) are well-accepted high-performancethen applied to evaluate the equations given in different codes/recommendations for FRP-reinforced concrete

Keywords： beam     external prestressing     ultra-high-performance concrete     fiber-reinforced polymers     shear behavior    

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Experimental flexural behavior of SMA-FRP reinforced concrete beam

Adeel ZAFAR, Bassem ANDRAWES

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 341-355 doi: 10.1007/s11709-013-0221-y

Abstract: The most critical drawback in currently used steel reinforcement in reinforced concrete (RC) structuresMany concrete structures due to damaged (yielded) steel reinforcement have undergone costly repairs andThe proposed SMA-FRP composite square rebars are first fabricated and then embedded in small scale concreteIt is found that the SMA-FRP composite reinforcement is able to enhance the performance of concrete member

Keywords： re-centering     shape memory alloys     concrete     composite     fiber reinforced polymer     scanning electron microscopy    

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Ductility improvement of GFRP-RC beams using precast confined concrete block in compression zone

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0968-8

Abstract: However, owing to the lack of ductility in this material and the quasi-brittle behavior of concrete,FRP-reinforced concrete (FRP-RC) beams, even with flexural failure, do not fail in a ductile manner.depends on the ductility of their compression zones, the present study proposes using a precast confined concrete

Keywords： ductility     four-point bending test     glass fiber-reinforced polymer     precast confined concrete block    

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Numerical modelling of reinforced concrete flexural members strengthened using textile reinforced mortars

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 649-668 doi: 10.1007/s11709-023-0919-4

Abstract: near-surface mounted (NSM) bonding are two widely adopted and researched strengthening methods for reinforced-concreteusing appropriate surface treatments, whereas NSM techniques can be easily applied to the soffit and concreteThe EB bonded fiber-reinforced polymer (FRP) technique has a significant drawback: combustibility, whichinvestigate the failing failure of carbon textile reinforced mortar (CTRM)-strengthened reinforced concreteA set of seven beams was modelled and calibrated to obtain concrete damage plasticity (CDP) parameters

Keywords： fiber reinforced polymer     textile reinforced mortar     finite element analysis     concrete damage plasticity    

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Predetermination of potential plastic hinges on reinforced concrete frames using GFRP reinforcement

Dominik KUERES; Dritan TOPUZI; Maria Anna POLAK

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5,   Pages 624-637 doi: 10.1007/s11709-022-0832-2

Abstract: In the past, glass fiber-reinforced polymer (GFRP)-reinforcement has been successfully applied in reinforcedconcrete (RC) structures where corrosion resistance, electromagnetic neutrality, or cuttability were

Keywords： glass fiber-reinforced polymer     GFRP     hybrid section     plastic hinge     seismic design     reinforced concrete    

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Moment-curvature relationship of FRP-concrete-steel double-skin tubular members

Mingxue LIU, Jiaru QIAN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 25-31 doi: 10.1007/s11709-009-0012-7

Abstract: Tests were conducted on 3 specimens to study the flexural behavior of fiber reinforced polymer (FRP)-concrete-steel double-skin tubular members (DSTMs).

Keywords： fiber reinforced polymer (FRP)     concrete     steel     double-skin tubular members (DSTMs)     moment-curvature curve    

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Investigation on modeling parameters of concrete beams reinforced with basalt FRP bars

Jordan CARTER, Aikaterini S. GENIKOMSOU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1520-1530 doi: 10.1007/s11709-019-0580-0

Abstract: Fiber-reinforced polymer (FRP) bars are widely used as internal reinforcement replacing the conventionalFRP (BFRP) bars have been used in different structural applications and, herein, three already tested concreteIn the FEA the behavior of concrete is simulated using the “Concrete-Damaged Plasticity” model offeredThe research presented here presents a calibrated model for nonlinear FEA of BFRP concrete beams to predictThe calibration process showed that the concrete model should be regularized using a mesh-dependent characteristic

Keywords： basalt Fiber-reinforced polymer bars     reinforced concrete beams     finite element analysis     damaged plasticity    

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Title Author Date Type Operation

Influence of accelerated curing on the compressive strength of polymer-modified concrete

Izhar AHMAD; Kashif Ali KHAN; Tahir AHMAD; Muhammad ALAM; Muhammad Tariq BASHIR

Journal Article

GO-modified flexible polymer nanocomposites fabricated via 3D stereolithography

Chi Him Alpha Tsang, Adilet Zhakeyev, Dennis Y.C. Leung, Jin Xuan

Journal Article

Experimental investigation on freeze−thaw durability of polymer concrete

Journal Article

Fatigue shear performance of concrete beams reinforced with hybrid (glass-fiber-reinforced polymer+ steel

Journal Article

Experimental and statistical investigation of a new concrete-composite beam with encased polymer tube

Abdelmadjid SI SALEM,Souad AIT TALEB,Kamal AIT TAHAR

Journal Article

Structural performance of a façade precast concrete sandwich panel enabled by a bar-type basalt fiber-reinforcedpolymer connector

Journal Article

Enhancing compressive strength and durability of self-compacting concrete modified with controlled-burnt

Journal Article

Influence of morphology on high-temperature rheological properties of bitumen modified with styrene-butadiene-styrene

Journal Article

Shear behavior of ultra-high-performance concrete beams prestressed with external carbon fiber-reinforcedpolymer tendons

Journal Article

Experimental flexural behavior of SMA-FRP reinforced concrete beam

Adeel ZAFAR, Bassem ANDRAWES

Journal Article

Ductility improvement of GFRP-RC beams using precast confined concrete block in compression zone

Journal Article

Numerical modelling of reinforced concrete flexural members strengthened using textile reinforced mortars

Journal Article

Predetermination of potential plastic hinges on reinforced concrete frames using GFRP reinforcement

Dominik KUERES; Dritan TOPUZI; Maria Anna POLAK

Journal Article

Moment-curvature relationship of FRP-concrete-steel double-skin tubular members

Mingxue LIU, Jiaru QIAN

Journal Article

Investigation on modeling parameters of concrete beams reinforced with basalt FRP bars

Jordan CARTER, Aikaterini S. GENIKOMSOU

Journal Article