Characteristic influence of carbon fibers on fresh state, mechanical properties and microstructure of carbon fiber based self compacting concrete

Gull, Iftekar; Tantray, Manzoor

doi:10.1016/j.matpr.2020.09.646

Cited by 12 publications

(2 citation statements)

References 20 publications

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“…Fresh concrete fails if the mix is not homogenous and bleeding occurs [39]. Firstly, glass fibres were added uniformly into the opened end of the concrete mixer before ending the mixing and later eurofibers were added, just before taking the concrete out for putting it into the moulds, so that there will be no damage done to fibres and there will be no change to the workability of concrete [40].…”

Section: Concrete Mixingmentioning

confidence: 99%

Compressive and flexural behavior of glass fiber-reinforced concrete

Annamaneni

Pedarla

2023

J. Phys.: Conf. Ser.

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Utilizing fibre-reinforced concrete is still a difficulty for present engineers. Generally, it is acknowledged that the mechanical, cracking and fracture qualities of fibre-reinforced concrete are much better than those of conventional concrete. The addition of fibres to the concrete matrix mitigates its fragility. Typically, short fibres are utilised in concrete to prevent cracks caused by drying and autogenous shrinkage. Currently, there is a substantial increase in the use of short alkali-resistant glass fibres. This experiment was conducted to examine the influence of glass fibre reinforcement on the compressive and flexural behaviour of concrete. This research investigates the characteristics of glass fibres reinforced concrete (GFRC) after 7 and 28 days of curing, such that GFRC may be employed in construction. Concrete containing short alkali-resistant glass fibres of 36 mm in length and 1% volume fraction (VF) was developed for this purpose. The testing findings revealed that the average compressive strength of GFRC after 28 days of curing was 72.06 MPa. The flexural properties of GFRC are determined, and the 7-day and 28-day average bending strengths of GFRC concrete samples are 6.46 MPa and 7.94 MPa, respectively, indicating that GFRC responds well under loading conditions.

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Section: Concrete Mixingmentioning

confidence: 99%

Compressive and flexural behavior of glass fiber-reinforced concrete

Annamaneni

Pedarla

2023

J. Phys.: Conf. Ser.

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“…The use of SCC is presented as an advantage over ordinary Portland concrete (OPC) [8,9], on the one hand it allows a homogeneous distribution of the fibers and on the other hand it can allow a greater effectiveness of the self-sensing property due to the greater volume of paste compared to the volume of the material. The only limitation is to establish the dosage thresholds that compromise the self-compactibility due to the use of fibers.…”

Section: Introductionmentioning

confidence: 99%

Piezoresistivity in self-compacting concrete mixes with hybrid additions of carbon fibers and nanofibers

2023

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Self-sensing properties of concrete structures can be achieved through the incorporation of additions in carbon-based materials (CBM) that modify electrical properties and provide piezoresistive (PZR) properties to the cement paste. PZR in pastes and mortar mixes with different types of carbon-based materials such as fibers of different sizes has been extensively tested. However, very limited studies on self-sensing properties in concrete are available due to the lower content of paste volume that leads to a decrease of concrete PZR. However, self-compacting concrete (SCC) can be an ideal candidate to implement PZR, due to two fundamental traits: the larger amount of paste of SCC compared to a conventional concrete and larger volumetric fraction of fiber can be incorporated due to a reduced effect on SCC workability and consistency. The present study aims to assess PZR properties of SCC with carbon-based components of different sizes. Combining carbon nanofibers (NFC) and carbon fibers (CF), in hybrid systems, could lead to obtain SCC with self-sensing properties identifying their effectiveness thresholds. The self-detection performance of PZR-SCC samples under mechanical stress was verified by resistivity and PZR experimental tests.

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