Test research on prestressed beam of inorganic polymer concrete

Liu, Huihong; Lu, Zhanwu; Peng, Ziqiang

doi:10.1617/s11527-014-0283-x

Cited by 10 publications

(6 citation statements)

References 9 publications

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“…Based on the previous studies, thirteen groups of geopolymer binder were tested so as to find the best composition of the mixture. With this regard, durability and mechanical properties were examined [35,36]. The natural sand was utilized as fine aggregate, and the gravel (coarse aggregate) was crushed with a maximum aggregate size (MAS) of 12.5 mm.…”

Section: Normal Strength Concrete and Geopolymer Concretementioning

confidence: 99%

Study a Structural Behavior of Eccentrically Loaded GFRP Reinforced Columns Made of Geopolymer Concrete

2020

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This study investigated a modern composite material, which is a short geopolymer concrete column (GPCC) reinforced by GFRP bars. The structural performances of GPCC subjected to eccentric load were studied and compared to the normal strength concrete column (NSCC) reinforced by steel bars. In this study, the primary experimental parameters were the reinforcement bars types, load eccentricity, and concrete types. Seven short columns were tested: three normal strength concrete columns reinforced by steel bars, three geopolymer concrete columns reinforced by GFRP bars and one normal strength concrete column without reinforcement. The model dimensions chosen in the present study was a square section of 130×130 mm and a total height of 850 mm. It was shown that the steel bars contribute about 16.47% of column capacity under concentric load. Comparing with the normal strength concrete column, a geopolymer concrete column reinforced by GFRP bars showed a little increase in ultimate load (5.17%) under concentric load. Under the load eccentricity of 130 mm, a geopolymer concrete column reinforced by GFRP bars showed a significant increase in the ultimate load (69.37%). Under large eccentricity, a geopolymer concrete column reinforced by GFRP bars has an outstanding effect on the columns' ultimate load capacity. Also, the sine form can be utilized for GPCC to find the lateral deflection along with the column high at different load values up to the failure.

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Section: Normal Strength Concrete and Geopolymer Concretementioning

confidence: 99%

Study a Structural Behavior of Eccentrically Loaded GFRP Reinforced Columns Made of Geopolymer Concrete

2020

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“…The alkaline activating solution was obtained by dissolving solid sodium hydroxide (NaOH) into sodium silicate (Na2SiO3) solution with the Na2SiO3/NaOH ratio of 1.53. Fifteen series of inorganic polymer binder were prepared and tested in order to determine the optimal composition of the mixture accounting for both early-age properties and durability, which was presented in detail in a previous work [11]. The medium-sized sand with fineness modulus of 2.72 was used as fine aggregate.…”

Section: Inorganic Polymer Concretementioning

confidence: 99%

“…CFRP reinforcing bars are too expensive to be implemented in normal civil engineering structures [8]. A new type of reinforcing bars made from basalt fibre (BFRP) has recently gathered attention as an alternative to other FRPs because of its cost effectiveness, ease of manufacture, high temperature resistance, freeze-thaw performance and good resistance to vibration and impact loading, corrosion and acids [9][10][11][12]. In addition, BFRP has better durability in alkaline conditions compared to GFRP [13].…”

Section: Introductionmentioning

confidence: 99%

Experimental study on flexural behaviour of inorganic polymer concrete beams reinforced with basalt rebar

Fan

Zhang

2016

Composites Part B: Engineering

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Corrosion of reinforcing steel and the severe degradation of mechanical properties with temperature and fire conditions are the weakest points of steel-reinforced concrete structures and fibre reinforced polymer (FRP) system, respectively. In this paper, the basalt reinforced inorganic polymer concrete (IPC) beam which combines the specific characteristics of IPC and basalt reinforcement such as good corrosion resistance and fire resistance was proposed. The inorganic polymer binder was made of fly ash, ground granulated blast-furnace slag and alkaline activating solution. The mechanical properties of IPC were measured and compared with those of reference ordinary Portland cement (OPC) concrete. The flexural behaviour of basalt reinforced IPC beam was investigated and compared to control steel-reinforced OPC concrete beam. The measured ultimate flexural capacity of basalt reinforced IPC beam was compared with the predicted value obtained using the guidelines for FRP-reinforced OPC concrete beam. Results indicated that the elastic modulus of IPC was very close to OPC, while the compressive strength and flexural strength of IPC were around 80% of those of OPC. The IPC beam reinforced with basalt rebar exhibited a two-stage load-midspan deflection response that was different from control concrete beam due to the different mechanical properties of basalt and steel rebars. The crack patterns in basalt reinforced IPC beam were found to be similar to control beam, however, the maximum crack width of basalt reinforced beam was approximately 2 times that of control beam. The guidelines for FRP-reinforced concrete beam were adequate for predicting the flexural strength of basalt reinforced IPC beams.

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“…From the above, the physical properties of the IPC have been studied extensively [12,13], but those of the IPC members have not. To make up for this gap, this paper carries out both experimental and theoretical analyses on the variation law in the compressive strength of IPC columns under eccentric load at different high-temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Post-fire Inorganic Polymer Concrete Columns under Eccentric Compression

Chen¹,

Lei²,

Zhao³

2019

RCMA

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This paper aims to disclose the variation law in the performance of inorganic polymer concrete (IPC) columns under varied temperatures. Therefore, the IPC columns were tested under eccentric compression at several high-temperature conditions, and multiple mechanical indices of each column were measured, including the compressive strength, axial deformation and lateral displacement. On this basis, the author analyzed the impacts of the hightemperature conditions on the mechanical properties of the IPC columns. The analysis shows that the compressive strength of the IPC columns was enhanced with the increase of fire temperature, and started to decline after the temperature surpassed 400 ℃; the loss ratio, i.e. the loss of compressive strength, of each IPC column under eccentric load, was smaller than that of the corresponding ordinary concrete column, under any high-temperature condition. The research results confirm the excellent fire-resistance of the IPC, shedding new light on fire prevention and post-fire evaluation.

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Test research on prestressed beam of inorganic polymer concrete

Cited by 10 publications

References 9 publications

Study a Structural Behavior of Eccentrically Loaded GFRP Reinforced Columns Made of Geopolymer Concrete

Study a Structural Behavior of Eccentrically Loaded GFRP Reinforced Columns Made of Geopolymer Concrete

Experimental study on flexural behaviour of inorganic polymer concrete beams reinforced with basalt rebar

Mechanical Properties of Post-fire Inorganic Polymer Concrete Columns under Eccentric Compression

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