Bending behaviour of novel Textile Reinforced Concrete-foamed concrete (TRC-FC) sandwich elements

Portal, Natalie Williams; Flansbjer, Mathias; Zandi, Kamyab; Własak, Lech; Malaga, Katarina

doi:10.1016/j.compstruct.2017.06.051

Cited by 71 publications

(21 citation statements)

References 9 publications

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“…For the four-point bending test, the samples are molded in the rectangular form with the dimensions of 400 × 100 × 15 mm 3 . Basalt textile was used as reinforced with geopolymer mortar matrix, and the specimens were manufactured by hand lay-up method.…”

Section: Specimen Preparationmentioning

confidence: 99%

“…Figure 5 provides the information about the development of the mechanical strength of geopolymer mortar at the various periods of aging time. Three samples with dimension 30 × 30 × 150 mm 3 for each ageing time were used for flexural test, and then the compressive strength was measured on both residual pieces obtained from flexural strength according to EN 196-1 standard [49]. It should be noted that the 28 day specimens were named as a reference sample.…”

Section: Four-point Bending Testmentioning

confidence: 99%

“…It is well-known for some significant advantages: (i) due to the possibility of the intentional alignment of textile fabric in concrete, it can be placed at the position where the stress is required, as a result of improved tensile strength and ductility, (ii) composite materials reinforced with these reinforcements are no need a strong concrete covering layer to protest against the corrosion of the structure, due to good alkali resistance of reinforcement, (iii) compared to fiber reinforced polymer composite, TRC exhibits lower cost, better temperature resistance, greater compatibility with most substrates. This type of composite can be used in a variety of the applications, such as repairing and/or strengthening the structural elements of old structures, load-bearing elements in new structures, new thin-wall elements and the lightweight concrete system [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

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Composite Performance Evaluation of Basalt Textile-Reinforced Geopolymer Mortar

Huang

Louda

et al. 2019

Fibers

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Basalt fiber is a novel type of inorganic fiber which is produced from the extrusion of natural vocalnic basalt rocks through their melting process at high temperature. So the quality and strength characteristics of basalt fiber depend mainly on both the quality of raw material and manufacturing processing. Basalt fabric-reinforced cementitious composites (FRCM) are a novel composite and an extensive scientific investigation is still ongoing for geopolymer composite. Based on three types of basalt textile with respect to various net sizes, the aim of this paper is to evaluate the flexural performance of basalt textile-reinforced geopolymer composite through the four-point bending test. The specimens of rectangular form with the dimension of 400 × 100 × 15 mm3, reinforced with one to four layers of each type of basalt textile, were produced. They were then tested at the age of about 40 days after casting. On the other hand, the number of the specimens reinforced with four layers were considered to assess the mechanical strength of the specimens at longer periods of ageing time (60, 90, 150, 180 days). The experimental results showed that with the increasing number of reinforcing layers, the specimens significantly improved the mechanical strength, except for those reinforced with basalt textile of big net size. The specimens reinforced with basalt textile of big net size had no impact on post-crack mechanical strength, however, it helps to arrest the catastrophic brittle failure of the specimens; the failure of these specimens is due to localization of first crack. When the specimens were exposed to the further ageing times, the mechanical strength of the specimens were decreased over time. All the reinforced specimens have the same failure mode by flexural failure due to the rupture of fiber yarn in matrix, and no debonding of fiber yarn or a gradual peeling process of mortar matrix happened during testing.

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Section: Specimen Preparationmentioning

confidence: 99%

Section: Four-point Bending Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Composite Performance Evaluation of Basalt Textile-Reinforced Geopolymer Mortar

Huang

Louda

et al. 2019

Fibers

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“…The combination of a cementitious matrix with a textile reinforcement has been widely investigated for different kinds of applications: reinforcing and/or strengthening of concrete and masonry structures [2][3][4][5], construction of pedestrian bridges [6], and as skins for the fabrication of sandwich panels. In addition to an experimental characterization of the bending behaviour of TRC sandwich panels [7][8][9][10], various work has been done on the analytical [11,12] and numerical [13][14][15] modelling of this behavior. Textile reinforced cementitious composite (TRC) is characterized by a linear behavior in compression and a non-linear behavior in tension.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Behaviour of Textile Reinforced Cementitious Composites and Their Application in Sandwich Elements

et al. 2019

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Using large lightweight insulating sandwich panels with cement composite faces offers great possibilities for the renovation of existing dwellings. During their lifetime, these panels are subjected to wind loading, which is equivalent to a repeated loading. To guarantee the structural performance of these panels during their entire lifetime, it is necessary to quantify the impact of these loading conditions on the long term. The fatigue behaviour was, therefore, examined in this paper both at the material level of the faces and at the element level as well. plain textile reinforced cementitious composite (TRC) specimens were subjected to 100,000 loading cycles by means of a uniaxial tensile test, while sandwich beams were loaded 100.000 times with a four-point bending test. Results show that the residual behaviour is strongly dependent on the occurrence of cracks. The formation of cracks leads to a reduction of the initial stiffness. The ultimate strength is only affected in a minor way by the preloading history.

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“…Thus, the concrete structural elements will become slender, lighter, and more flexible. Textile-reinforced concrete can be utilized in a wide range of applications, such as the lightweight concrete systems [32][33][34], repairing and/or strengthening in current structural elements [35,36], thin wall elements [37,38], etc. In another context, the research and development of non-corrosion textile material, reinforced in Portland cement concrete for the different applications, have been studied by many researchers, however, with respect to the geopolymer, this is quite a new field.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of Carbon Textile-Reinforced Geopolymer Composite Thin Plate

Huang

Louda

Periyasamy

et al. 2018

Fibers

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Textile-reinforced Portland cement-based concrete has been researched and developed over the last few decades. It was widely used in a different range of applications, such as repair and/or strengthening of structural elements, thin walls, lightweight structures, façade elements, and others. Due to its varied application, this study aims to develop the carbon textile-reinforced geopolymer composite. Specimens of rectangular form with the dimensions of 400 × 100 × 15 mm3, reinforced with carbon textile, were produced. Four-point bending test was used to evaluate the effect of carbon textile on the mechanical strength of reinforced geopolymer composite based on the three factors: the different mortar compositions corresponding to the addition of the chopped basalt fiber (BF), the number of carbon textile layers, and the different thicknesses of the mortar cover layer. Besides that, a small part of the pull-out test was also considered to assess the adhesion strength at the interface between carbon textile and geopolymer mortar. The experimental results from the four-point bending test showed that the mechanical strength of composite specimens increased when the content of the chopped basalt fiber increased. With the increasing number of the textile layers, the specimens improved the flexural strength significantly. However, the flexural toughness of the specimens reinforced with three textile layers did not improve, as compared to those reinforced with two textile layers. The experimental results for the specimens related to the mortar cover thicknesses indicated that specimens with the mortar cover thickness of 2 mm provide the best strength. The experimental results from the pull-out tests showed that all the specimens have the same failure mode by slipping of the fiber yarn from the matrix.

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Bending behaviour of novel Textile Reinforced Concrete-foamed concrete (TRC-FC) sandwich elements

Cited by 71 publications

References 9 publications

Composite Performance Evaluation of Basalt Textile-Reinforced Geopolymer Mortar

Composite Performance Evaluation of Basalt Textile-Reinforced Geopolymer Mortar

Fatigue Behaviour of Textile Reinforced Cementitious Composites and Their Application in Sandwich Elements

Flexural Behavior of Carbon Textile-Reinforced Geopolymer Composite Thin Plate

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