Rheological properties of sonogel and comparison with rheological properties of high-performance concrete

Carrera, Kristýna; Kheml, Přemysl; Sovják, Radoslav; Künzel, Karel

doi:10.1016/j.matpr.2022.02.160

Cited by 5 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Exposure time to the magnetic field is 5 seconds. It is important to assure exposition to the magnetic field as soon as possible as the fresh mixture has suitable rheology so the magnetic field can overcome the matrix's resistance against the fibre rotation [12]. The fibres have been oriented with a special coil device using a magnetic field (Fig.…”

Section: Manufacturing Of Specimensmentioning

confidence: 99%

“…The second option aligning fibres with a magnetic field can be used just for fibres from ferromagnetic material [6]- [11]. This option can be fully controlled but is highly dependent on the shape of the magnetic field (fibres are aligned always in the same direction with agentic field lines) and the rheology of fresh concrete (the magnetic field has to be strong enough to overcome the resistance of cement matrix [12]. In this paper, the second method of orientation with a magnetic field is used.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flexural strength of fibre reinforced concrete in relation to the angle of magnetically orientated fibres

et al. 2022

Self Cite

View full text Add to dashboard Cite

This paper focuses on high-performance fibre-reinforced concrete and its flexural strength concerning fibre orientation. The orientation is provided by a fully controlled special device. This device can align the fibres in fresh concrete using a magnetic field. The specimens are inserted into the device at different angles to ensure different fibre orientations concerning the longer side of the sample, which corresponds to the direction of the main tensile stresses. Specifically, angles of 0 °, 30 #x00B0;, 60 ° and 90 ° are tested and compared with each other and with reference specimens that are not exposed to a magnetic field. All samples are measured by a non-destructive method. This method was developed in our previous research and is based on measuring the quality factor Q of a measuring coil using an impedance meter. The samples are inserted into a measuring coil connected to an impedance meter. Flexural strength is obtained from the results of a three-point bending test. All samples are tested until complete failure.

show abstract

Section: Manufacturing Of Specimensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexural strength of fibre reinforced concrete in relation to the angle of magnetically orientated fibres

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…The filled moulds intended for magnetic orientation were closed from the top and immediately subjected to the magnetic orientation process. It is important that relatively low manufacturing times are maintained as the fresh mixture needs to have suitable rheology so the magnetic field can overcome the matrix's resistance against the fibre rotation [11]. The fibres have been oriented with a special coil device using a magnetic field (Figure 2).…”

Section: Constituentmentioning

confidence: 99%

Concrete lintels reinforced with steel fibres oriented by a magnetic field

et al. 2022

View full text Add to dashboard Cite

This paper explores the possibility of applying the technique of magnetic orientation of steel fibres for manufacturing a concrete structural element of realistic dimensions, compared to small laboratory specimens. This technique could be a part of an answer to the current need for faster and automated production in the prefabrication industry. The examined specimens have dimensions of commonly used lintels in construction, 80 mm × 100 mm × 980 mm. The properties of specimens with magnetically oriented fibres are compared with same size specimens prefabricated conventionally. The orientation of fibres has been confirmed by Q-factor non-destructive testing method using a measuring coil. All specimens were tested with a four-point bending test. The specimens with oriented fibres show a significantly higher flexural strength, by 150 %, than specimens produced conventionally with the same volume of fibres.

show abstract

Combined effect of silica nanoparticles and binary surfactants in enhancing oil recovery: An experimental investigation

Gazem,

Patel,

Sreenivasan

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Rheological properties of sonogel and comparison with rheological properties of high-performance concrete

Cited by 5 publications

References 6 publications

Flexural strength of fibre reinforced concrete in relation to the angle of magnetically orientated fibres

Flexural strength of fibre reinforced concrete in relation to the angle of magnetically orientated fibres

Concrete lintels reinforced with steel fibres oriented by a magnetic field

Combined effect of silica nanoparticles and binary surfactants in enhancing oil recovery: An experimental investigation

Contact Info

Product

Resources

About