Durability modelling of glass fibre reinforcement in cementitious environment

Orlowsky, Jeanette; Raupach, Michael; Cuypers, Heidi; Wastiels, Jan

doi:10.1007/bf02479340

Cited by 39 publications

(13 citation statements)

References 4 publications

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“…Similarly, traction tests were carried out on the glass fiber fabric, again in the control, alkaline and saline groups, 5 specimens per group. Fig.18 shows the mean and the one standard deviation band for each group, at the usual elongation rate of 0. cementitious matrix, which is highly sensitive to the pH level [17]. Although such pattern is discernible in our experiments, it has here no statistical appreciation.…”

Section: Glass Fabric Degradationcontrasting

confidence: 69%

Durability assessment of impregnated Glass Fabric Reinforced Cementitious Matrix (GFRCM) composites in the alkaline and saline environments

Nobili

2016

Construction and Building Materials

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In this paper, the effect of the alkaline and of the saline environments on prismatic specimens of impregnated alkali-resistant Glass Fabric Reinforced Cementitious Matrix (GFRCM) coupons is investigated. Two types of mortar are considered as representative of a mid-high performance or fine-texture matrix. Coupons are manufactured, cured for 28 days and then submerged in the alkaline or saline solution at constant temperature in a climatic chamber for 1000 h (aging). Specimens in the control group are retained in the laboratory environment. Mechanical performance of the aged coupons is assessed through tensile testing. A Digital Image Correlation (DIC) system is used to measure the actual specimen deformation. Ultimate strength and elongation, uncracked and cracked matrix elastic moduli, turning point location and failure mechanisms are determined and compared with the control group's through a variance analysis. Statistical support is found for an important reduction in the ultimate strength and elongation, owing to mortar degradation. This result is confirmed by a similar analysis carried out on the single components (mortars and glass fabric) of the composite. Mortar degradation affects failure through favoring a less desirable fabric slip mechanism, as opposed to fabric rupture. © 2015 Elsevier Ltd. All rights reserved

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Section: Glass Fabric Degradationcontrasting

confidence: 69%

Durability assessment of impregnated Glass Fabric Reinforced Cementitious Matrix (GFRCM) composites in the alkaline and saline environments

Nobili

2016

Construction and Building Materials

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“…The element concentrations are not evenly distributed, which leads to evaluations of different depth of the layers along the glass ber surface. These results show that weak point and defects will grow notably due to chemical attack leading to reduction of strength, without application of any mechanical load 27) . On the other hand, the ARGF_CN samples ((b)-(f)) did not show any obvious signs of corrosion on the glass ber after 72 h, though there is visible progression in the surface reactions.…”

Section: Viscosity Of the Glassesmentioning

confidence: 81%

Performance of Alkali-Resistant Glass Fibers Modified with Refused Coal Ore

Lee

Lim

et al. 2017

Mater. Trans.

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In this study, we fabricated E-glass bers and alkali-resistant (AR)-glass bers with a 7 mass% zirconia content, and AR-glass bers with a 7 mass% zirconia and 30-50 mass% refused coal ore content. The obtained bers were characterized for their tensile strength and alkali-resistant properties after dipping the bers in an alkaline solution. The alkali test results, based on microscopic images, showed that the AR-glass bers with 7 mass% zirconia and 40 mass% refused coal ore had better chemical resistance than the E-glass bers. The average tensile strengths of the E-glass bers and the AR-glass bers with 7 mass% zirconia and 40 mass% refused coal ore, after being dipped in an alkaline solution for 48 h, were 240 and 343 MPa, respectively. In addition, after an alkali test for 72 h, the average tensile strength of AR-glass bers with 7 mass% zirconia was 277 MPa, and the average tensile strength of AR-glass bers with 7 mass% zirconia and 40 mass% refused coal ore was 296 MPa. The AR-glass bers with a high tensile strength and low berizing temperature, fabricated using refused coal ore, can be widely used as alkali-resistant glass bers.

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“…The authors measured diameter of filaments and found no significant reduction. After studying the surface of aged glass filaments with SEM at (Orlowsky et al, 2005).…”

Section: Chemical Corrosionmentioning

confidence: 99%

Ageing Models and Accelerated Ageing Tests of Glass Fiber Reinforced Concrete

Moceikis

Kičaitė

Skripkiūnas

et al. 2018

Engineering Structures and Technologies

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Abstract. Glass fiber reinforced concrete (GRC) is used for 40 years to create world's most stunning and complex architectural elements due to its high mechanical properties, particularly flexural strength. Yet it is very important to note that any type of glass fibers in the concrete matrix are undergoing complex ageing processes, resulting to significant decrease of initial mechanical characteristics of this composite material under natural weathering conditions. Aspects of GRC durability are mainly dependent from the properties of fibers and interaction between them and concrete matrix. In this article, long term strength retention of this composite material is discussed, existing experimental data of weathering tests presented, and main corrosion mechanisms explained. Lack of knowledge about freeze-thaw resistance of glass fiber reinforced concrete is addressed. Finally, latest attempts of GRC durability improvement are reviewed, such as adding micro fillers, polymers to the concrete matrix and enhancing surface of fibers in Nano scale.

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Durability modelling of glass fibre reinforcement in cementitious environment

Cited by 39 publications

References 4 publications

Durability assessment of impregnated Glass Fabric Reinforced Cementitious Matrix (GFRCM) composites in the alkaline and saline environments

Durability assessment of impregnated Glass Fabric Reinforced Cementitious Matrix (GFRCM) composites in the alkaline and saline environments

Performance of Alkali-Resistant Glass Fibers Modified with Refused Coal Ore

Ageing Models and Accelerated Ageing Tests of Glass Fiber Reinforced Concrete

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