An Experimental Study on the Fracture Energy of Foamed Concrete Using V-Notched Beams

Rahman, Norashidah Abd; Jaini, Zainorizuan Mohd; Rahim, Nor Azira Abd.; Razak, Siti Noraiza Ab

doi:10.1007/978-981-287-290-6_9

Cited by 12 publications

(13 citation statements)

References 11 publications

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“…Meanwhile, the fracture energy of foamed concrete, including cellular concrete and aerated concrete, was found to be 30% to 50% lower than normal concrete [1]. Void and non-presence of coarse aggregate typically affected the strength and consequently reduced the fracture energy of foamed concrete.…”

Section: Introductionmentioning

confidence: 99%

Fracture Energy of Foamed Concrete: Numerical Modelling Using the Combined Finite-Discrete Element Method

et al. 2017

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Abstract. Foamed concrete is known as lightweight concrete that proven in the low range of densities with good strength. Numerous studies were conducted to investigate its performance in term of mechanical properties. However, these investigations are still not adequate in the requirement of failure and damage mechanisms. This is due to the lack of knowledge on fracture energy that governs the crack resistance of foamed concrete. Therefore, this paper presents the numerical prediction of fracture energy of foamed concrete using the combined finite-discrete element method. The notched beam was modelled in the two-dimensional with unstructured mesh elements and a simple material model of Rotating Crack. The results of numerical prediction signify that various notch depths have an apparent impact toward fracture energy of foamed concrete.

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Section: Introductionmentioning

confidence: 99%

Fracture Energy of Foamed Concrete: Numerical Modelling Using the Combined Finite-Discrete Element Method

et al. 2017

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“…Only limited number of studies can be found in literature. Rahman and Jaini [6] performed studies of fracture energy of foamed concrete on notched beams with the density of 1400−1600 kg/m 3 . The fracture energy of foamed concrete with compressive strength of 6.4−14 MPa was relatively high around 18−25 N/m.…”

Section: Introductionmentioning

confidence: 99%

Fracture Energy of Foamed Concrete Based on Three-Point Bending Test on Notched Beams

Kozłowski

Kadela

Kukiełka

2015

Procedia Engineering

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A series of static loading tests was performed to determine the fracture properties of foamed concrete of varying density. Beams with dimensions of 100×100×840 mm with a central notch were tested in three-point bending. Then, remaining halves of the specimens were tested again as un-notched beams in the same set-up with reduced distance between supports. The tests were performed in a hydraulic displacement controlled testing machine with a load capacity of 5 kN. Apart from measuring the loading and mid-span displacement, a crack mouth opening displacement (CMOD) was monitored. Based on the loaddisplacement curves of notched beams the values of fracture energy and tensile stress at failure were calculated. Subsequently, the flexural tensile strength was obtained on un-notched beams with dimensions of 100×100×420 mm. Moreover, cube specimens 150×150×150 mm were tested in compression to determine the compressive strength.

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“…Fracture energy is an important material behavior that should be studied when foamed concrete is utilized as a structural component. Previous research reported that foamed concrete has a fracture energy level of 15N/m -40N/m at various densities between 400kg/m 3 and 1600kg/m 3 [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Fracture Energy of Foam Concrete at Different Notch Depth

et al. 2018

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Foamed concrete is lightweight concrete formulated from a mixture of concrete mortar and established foam. Generally foamed concrete is known for its low engineering properties. Many researchers had conducted studies and more focused on the physical and mechanical properties of foamed concrete without taking into account the behavior on its fracture energy. Therefore, this study was carried out to investigate the effect of notch-to-depth ratio on fracture energy of foam concrete using three point bending testmethod. Beam specimens with V-notch were prepared at a densityof 1400kg/m3 and 1600kg/m3. Three different notch-to-depth ratios which were adopted at 0.1, 0.3 and 0.5. Fracture energy was determined using Hillerborg, Bazant and Comitee euro International du Beton (CEB) models. From the experimental results, it was shown that fracture energy decreases asthe notch-to-depth ratio increases.

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An Experimental Study on the Fracture Energy of Foamed Concrete Using V-Notched Beams

Cited by 12 publications

References 11 publications

Fracture Energy of Foamed Concrete: Numerical Modelling Using the Combined Finite-Discrete Element Method

Fracture Energy of Foamed Concrete: Numerical Modelling Using the Combined Finite-Discrete Element Method

Fracture Energy of Foamed Concrete Based on Three-Point Bending Test on Notched Beams

Experimental Study on Fracture Energy of Foam Concrete at Different Notch Depth

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