Mechanical Properties of Carbon-Fiber RPC and Design Method of Carbon-Fiber Content under Different Curing Systems

Zhang, Xuejian; Ge, Lincai; Zhang, Yunlong; Wang, Jing

doi:10.3390/ma12223759

Cited by 14 publications

(7 citation statements)

References 19 publications

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“…It is evident from Table 4 that the maximum increase in compressive strength (61%) after 28 days occurred for CFRM3 made with 3% carbon fibers. Similar findings were reported by several other researchers who observed that carbon fibers could enhance the compressive strength of cement composites [ 59 , 60 , 61 , 62 ]. The unit weight and air content results of CFRM3 (refer to Table 3 ) support its maximum increase in compressive strength obtained in the present study.…”

Section: Test Results and Discussionsupporting

confidence: 92%

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Performance and Cost-Effectiveness of Short Pitch-Based Carbon Fiber Reinforced Mortar Composite

Abdel‐Sayed

Hearn

2021

Materials

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This paper discusses the performance of the short pitch-based carbon fiber reinforced mortar (CFRM) composite considering its key properties and cost-effectiveness. Five different types of mortar composite were produced using 0–4% volume contents of short pitch-based carbon fibers. The mortar composites were tested for inverted slump cone flow (flow time and volume flow), unit weight, air content, compressive strength, flexural strength, impact resistance, and water absorption. The cost-effectiveness of CFRM was assessed based on the performance to cost ratio (PCR), which was calculated for each mortar composite, considering its workability, mechanical properties, and durability. The inverted slump cone volume flow was counted as a measure of workability, whereas the compressive strength, flexural strength, and impact resistance were considered as the major attributes of the mechanical behavior. In addition, the water absorption was used as a measure of durability. The test results revealed that the mortar composite made with 3% carbon fibers provided adequate workability, a relatively high unit weight and low air content, the highest compressive strength, excellent flexural strength, good impact resistance, and the lowest water absorption. It was also found that the PCR increased up to 3% carbon fibers. Beyond a 3% fiber content, the PCR significantly decreased. The overall research findings revealed that the mortar with 3% carbon fibers was the optimum and most cost-effective mortar composite.

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Section: Test Results and Discussionsupporting

confidence: 92%

“…CFRM3 including 3% carbon fibers possessed a comparatively high unit weight but low air content. Furthermore, the carbon fibers increase the interfacial bond strength in the composite material [ 60 , 63 ]. This is due to their inherent surface roughness.…”

Section: Test Results and Discussionmentioning

confidence: 99%

Performance and Cost-Effectiveness of Short Pitch-Based Carbon Fiber Reinforced Mortar Composite

Abdel‐Sayed

Hearn

2021

Materials

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Section: Splitting Tensile Strengthsupporting

confidence: 89%

“…It is obvious from Figure 3 that the splitting tensile strength of CFRM composite increased almost linearly with the increase in carbon fiber content. A similar trend of increase in tensile strength was reported in several past studies [5,30,[44][45][46]. The strengthening factors of various CFRM composites for tension were found after dividing their tensile strength by the tensile strength of NPCM and are shown in Table 5.…”

Section: Splitting Tensile Strengthsupporting

confidence: 82%

Absorption and Strength Properties of Short Carbon Fiber Reinforced Mortar Composite

Abdel‐Sayed

Hearn

2021

Buildings

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This paper presents the water absorption and strength properties of short carbon fiber reinforced mortar (CFRM) composite. Four CFRM composites with 1%, 2%, 3%, and 4% short pitch-based carbon fibers were produced in this study. Normal Portland cement mortar (NCPM) was also prepared for use as the control mortar. The freshly mixed mortar composites were tested for workability, wet density, and entrapped air content. In addition, the hardened mortar composites were examined for compressive strength, splitting tensile strength, flexural strength, and water absorption at the ages of 7 and 28 days. The effects of different carbon fiber contents on the tested properties were observed. Test results showed that the incorporation of carbon fibers decreased the workability and wet density, but increased the entrapped air content in mortar composite. Most interestingly, the compressive strength of CFRM composite increased up to 3% carbon fiber content and then it declined significantly for 4% fiber content, depending on the workability and compaction of the mortar. In contrast, the splitting tensile strength and flexural strength of the CFRM composite increased for all fiber contents due to the greater cracking resistance and improved bond strength of the carbon fibers in the mortar. The presence of short pitch-based carbon fibers significantly strengthened the mortar by bridging the microcracks, resisting the propagation of these minute cracks, and impeding the growth of macrocracks. Furthermore, the water absorption of CFRM composite decreased up to 3% carbon fiber content and then it increased substantially for 4% fiber content, depending on the entrapped air content of the mortar. The overall test results suggest that the mortar with 3% carbon fibers is the optimum CFRM composite based on the tested properties.

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“…21,22 The fundamental components in electrochemical processes are the electrodes. CBMs show high chemical stability, 23 good mechanical properties, 24,25 and high electrical conductivity. 26,27 However, despite the potential of CBMs, a common problem is their low surface wettability, 28 which leads to a low utilization rate of the specific surface area and low energy storage.…”

Section: Introductionmentioning

confidence: 99%

Covalent functionalization of carbon materials with redox-active organic molecules for energy storage

Khan

Nishina

2021

Nanoscale

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Mechanical Properties of Carbon-Fiber RPC and Design Method of Carbon-Fiber Content under Different Curing Systems

Cited by 14 publications

References 19 publications

Performance and Cost-Effectiveness of Short Pitch-Based Carbon Fiber Reinforced Mortar Composite

Performance and Cost-Effectiveness of Short Pitch-Based Carbon Fiber Reinforced Mortar Composite

Absorption and Strength Properties of Short Carbon Fiber Reinforced Mortar Composite

Covalent functionalization of carbon materials with redox-active organic molecules for energy storage

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