Title:
On the Application of Basalt-Fiber Reinforced Polymer (BFRP) Bars to Prestressed Slab Elements Typical of the Precast Concrete Industry
Author(s):
Bruno Dal Lago, Davide Bisi and Liberato Ferrara
Publication:
Symposium Paper
Volume:
333
Issue:
Appears on pages(s):
40-59
Keywords:
basalt; creep; losses; nonlinear analysis; prestressing; serviceability; slab elements; structural design
DOI:
10.14359/51720269
Date:
10/1/2019
Abstract:
Basalt-Fiber Reinforced Polymer (BFRP) bars have been recently proposed to be used to prestress precast concrete elements. Mechanical properties, potential low production cost, low carbon footprint, and enhanced durability make the application of BFRP to prestressed concrete promising. Nevertheless, some issues related to anchorage and sustained stress still need to be fully addressed. Applications are so far limited to few laboratory tests. This paper discusses how the Serviceability Limit State (SLS) and Ultimate Limit State (ULS) checks of prestressed elements employing this technology vary with respect to elements pre-stressed with steel tendons.
Furthermore, an attempt is made to investigate the potential application into the precast concrete industry, by analyzing several typical roof and floor slab elements with different cross-sections. This investigation highlights which type of element could be more advantageously switched to the use of pre-stressed BFRP bars, and at which cost in terms of structural performance.
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