A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of concrete based alkali solutions on short-term durability of E-glass/vinylester composites
Although the mechanisms of degradation of bare E-glass fibers by concrete based alkaline solutions are fairly well documented, the effects on ambient temperature cure E-glass/Vinylester composites have heretofore not been well investigated. This paper reports on the results of a study of effects on E-glass/Vinylester composites immersed in a number of concrete-based, and derived, solutions for a period of 18 months. It is shown that degradation is not merely due to pH levels, but to a combination of pH level and solution chemistry. The degradation is at the levels of the fiber-matrix interface and the fiber. A range of damage states are identified and correlated to changes in mechanical properties. In addition to tensile testing, dynamic mechanical thermal analysis, optical microscopy, and SEM/EDX analyses were conducted. It is shown that alkali salts do migrate by diffusion through the composite and by wicking along the fiber-matrix interface into the composite and can cause pitting of the fiber surface.
Effect of concrete based alkali solutions on short-term durability of E-glass/vinylester composites
Although the mechanisms of degradation of bare E-glass fibers by concrete based alkaline solutions are fairly well documented, the effects on ambient temperature cure E-glass/Vinylester composites have heretofore not been well investigated. This paper reports on the results of a study of effects on E-glass/Vinylester composites immersed in a number of concrete-based, and derived, solutions for a period of 18 months. It is shown that degradation is not merely due to pH levels, but to a combination of pH level and solution chemistry. The degradation is at the levels of the fiber-matrix interface and the fiber. A range of damage states are identified and correlated to changes in mechanical properties. In addition to tensile testing, dynamic mechanical thermal analysis, optical microscopy, and SEM/EDX analyses were conducted. It is shown that alkali salts do migrate by diffusion through the composite and by wicking along the fiber-matrix interface into the composite and can cause pitting of the fiber surface.
Effect of concrete based alkali solutions on short-term durability of E-glass/vinylester composites
Karbhari, V.M. (author) / Murphy, K. (author) / Zhang, S. (author)
Journal of Composite Materials ; 36 ; 2101-2121
2002
21 Seiten, 22 Quellen
Article (Journal)
English
Beton , alkalischer Abbau , pH-Wert , Grenzfläche , mechanische Eigenschaft , Zugfestigkeitsprüfung , optische Mikroskopie , Rasterelektronenmikroskopie , energiedispersive Spektrometrie , Calciumhydroxid , alkalische Lösung , glasfaserverstärkter Kunststoff , Vinylester , dynamisch-mechanische Analyse
Effect of Concrete Based Alkali Solutions on Short-Term Durability of E-Glass/Vinylester Composites
| British Library Online Contents | 2002
Durability and Environmental Degradation of Glass-Vinylester Composites
| British Library Online Contents | 2004
Synergistic Hydrothermal Effects on Durability of E-Glass Vinylester Composites
| British Library Conference Proceedings | 2003