Mechanical Properties and Freeze–Thaw Durability of Basalt Fiber Reactive Powder Concrete

Li, Wenjun; Liu, Hanbing; Zhu, Bing; Lyu, Xiang; Gao, Xuexu; Liang, Chunyu

doi:10.3390/app10165682

Cited by 31 publications

(18 citation statements)

References 37 publications

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“…Owing to this, the microstructure of basalt fiber polymer-modified RPC materials is more compact and the mechanical properties, durability and toughness of basalt fiber polymer-modified RPC composites are improved. Therefore, basalt fiber polymer-modified RPC has the characteristics of ultra high strength, high durability and high temperature adaptability [ 8 , 9 , 10 ]. Basalt fiber polymer-modified RPC can effectively reduce the self-weight of structures and increase the spanning capacity, which has a broad application prospect in various infrastructure construction.…”

Section: Introductionmentioning

confidence: 99%

Structural Design Calculation of Basalt Fiber Polymer-Modified RPC Beams Subjected to Four-Point Bending

Gong

Yang

et al. 2021

Polymers

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In this paper, a basalt fiber surface was treated with coupling agent KH-550 and hydrochloric acid, and the basalt fiber polymer-modified active powder concrete (RPC) material was prepared. There are significant differences in material composition and properties between basalt fiber polymer-modified RPC and ordinary concrete, and the structural design calculation (cracking moment and normal section bending bearing capacity) of an ordinary reinforced concrete beam is no longer applicable. Thus, mechanical parameters such as displacement and strain of reinforcement basalt fiber polymer-modified RPC beams subjected to four-point bending were tested. The excellent compressive and tensile strengths of basalt fiber polymer-modified RPC were fully utilized. The tensile strength of basalt fiber polymer-modified RPC in the tensile zone of the beam was considered in the calculation of normal section bending bearing capacity of reinforcement basalt fiber polymer-modified RPC beams. The results showed that the measured values of the cracking moment and ultimate failure bending moment of reinforcement basalt fiber polymer-modified RPC beams were in good agreement with the calculated values. The established formulas for cracking moment and normal section bending bearing capacity can provide references for the design of reinforcement basalt fiber polymer-modified RPC simply supported beam and promote the wide application of basalt fiber polymer-modified RPC materials in practical engineering.

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Section: Introductionmentioning

confidence: 99%

Structural Design Calculation of Basalt Fiber Polymer-Modified RPC Beams Subjected to Four-Point Bending

Gong

Yang

et al. 2021

Polymers

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“…Basalt fiber has a great advantage on the mechanical properties and durability of reactive powder concrete (RPC) because of its superior mechanical properties and chemical corrosion resistance. In this paper, basalt fiber was adopted to modified RPC, and plain reactive powder concrete (PRPC), basalt fiber reactive powder concrete (BFRPC) and steel fiber reactive powder concrete (SFRPC) were prepared [7]. The mechanical properties and freeze-thaw durability of BFRPC with different basalt fiber contents were tested and compared with PRPC and SFRPC to investigate the effects of basalt fiber contents and fiber type on the mechanical properties and freeze-thaw durability of RPC.…”

Section: Mechanical Properties and Freeze-thaw Durability Of Basalt F...mentioning

confidence: 99%

Special Issue High-Performance Eco-Efficient Concrete

2021

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“…When the load reached 70% to 90% of the estimated peak load, the loading speed should be slowed down and adjusted to 0.1 mm/s. (7) Stop the test while the specimen is destroyed. e test site situation is shown in Figure 11.…”

Section: Axial Compression Testmentioning

confidence: 99%

“…First, a large number of scholars have studied the mechanical performance of advanced concrete materials under freezing-thawing cycles. Li [7] studied the mechanical properties and F-T durability of basalt fiber reactive powder concrete. e result shows that steel fiber reactive powder concrete was more sensitive to the chloride salts when compared with that of the basalt fiber counterpart.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Effect of Freeze‐Thaw Cycles on Axial Tension and Compression Performance of Concrete after Complete Carbonization

Cao

Liu

Zhou

et al. 2021

Advances in Civil Engineering

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The effect of freeze-thaw cycles on the axial tension and axial compression properties of completely carbonized concrete are investigated in this study. Three grade concrete specimens (C30, C40, and C45) were fabricated. The freeze-thaw cycle test was carried out on the completely carbonized specimens, followed by axial tension and axial compression tests. The results show that completed carbonization increases the axial tensile peak stress of C30, C40, and C45 concrete specimens by 8.7%, 9.7%, and, 12.1%, respectively. The peak axial tension strain increased by 1.9%, 7.2%, and 9.6%, respectively. The peak axial compressive stress increased by 10.5%, 19.1%, and 24.1%, respectively. The peak axial compressive strain decreased by 13.7%, 14.1%, and 14.3%, respectively. With the increase of freeze-thaw cycles, the peak stress of tensile stress, peak strain, and compressive stress of concrete decrease continuously. The peak strain of compressive strain increases. The lower the strength grade of concrete, the faster the decline rate of stress and strain. According to the data changes of peak stress and peak strain at different times of freeze thaw after carbonization, the stress-strain curve fitting formula for concrete under freeze-thaw cycles after complete carbonization is put forward, which has a good coincidence with the experimental result.

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Mechanical Properties and Freeze–Thaw Durability of Basalt Fiber Reactive Powder Concrete

Cited by 31 publications

References 37 publications

Structural Design Calculation of Basalt Fiber Polymer-Modified RPC Beams Subjected to Four-Point Bending

Structural Design Calculation of Basalt Fiber Polymer-Modified RPC Beams Subjected to Four-Point Bending

Special Issue High-Performance Eco-Efficient Concrete

Experimental Study on the Effect of Freeze‐Thaw Cycles on Axial Tension and Compression Performance of Concrete after Complete Carbonization

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