The Durability and Performance of Short Fibers for a Newly Developed Alkali-Activated Binder
AbstractThis study reports the development of a fiber-reinforced alkali-activated binder (FRAAB) with an emphasis on the performance and the durability of the fibers in the alkaline alkali-activated binder (AAB)-matrix. For the development of the matrix, the reactive components granulated slag and coal fly ash were used, which were alkali-activated with a mixture of sodium hydroxide (2–10 mol/L) and an aqueous sodium silicate solution (SiO2/Na2O molar ratio: 2.1) at ambient temperature. For the reinforcement of the matrix integral fibers of alkali-resistant glass (AR-glass), E-glass, basalt, and carbon with a fiber volume content of 0.5% were used. By the integration of these short fibers, the three-point bending tensile strength of the AAB increased strikingly from 4.6 MPa (no fibers) up to 5.7 MPa (carbon) after one day. As a result of the investigations of the alkali resistance, the AR-glass and the carbon fibers showed the highest durability of all fibers in the FRAAB-matrix. In contrast to that, the weight loss of E-glass and basalt fibers was significant under the alkaline condition. According to these results, only the AR-glass and the carbon fibers reveal sufficient durability in the alkaline AAB-matrix. View Full-Text
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Funke, H.; Gelbrich, S.; Kroll, L. The Durability and Performance of Short Fibers for a Newly Developed Alkali-Activated Binder. Fibers 2016, 4, 11.
Funke H, Gelbrich S, Kroll L. The Durability and Performance of Short Fibers for a Newly Developed Alkali-Activated Binder. Fibers. 2016; 4(1):11.Chicago/Turabian Style
Funke, Henrik; Gelbrich, Sandra; Kroll, Lothar. 2016. "The Durability and Performance of Short Fibers for a Newly Developed Alkali-Activated Binder." Fibers 4, no. 1: 11.
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