On the Application of Basalt-Fiber Reinforced Polymer (BFRP) Bars to Prestressed Slab Elements Typical of the Precast Concrete Industry
Chapter
Publication Date:
2019
abstract:
Basalt-Fiber Reinforced Polymer (BFRP) bars have been recently proposed to be used to prestress
precast concrete elements. Their mechanical properties, combined with the potential low production cost, the low
carbon footprint and the enhanced durability, make this application promising, given some issues related to
anchorage and sustained stress still need to be fully addressed. Applications at present are limited to very few
laboratory tests. The paper discusses how the Serviceability Limit State (SLS) and Ultimate Limit State (ULS)
checks of pre-stressed 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 elements (roof and floor slabs) typical of the precast concrete industry with different crosssection. 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
precast concrete elements. Their mechanical properties, combined with the potential low production cost, the low
carbon footprint and the enhanced durability, make this application promising, given some issues related to
anchorage and sustained stress still need to be fully addressed. Applications at present are limited to very few
laboratory tests. The paper discusses how the Serviceability Limit State (SLS) and Ultimate Limit State (ULS)
checks of pre-stressed 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 elements (roof and floor slabs) typical of the precast concrete industry with different crosssection. 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
Iris type:
Capitolo di Libro
Keywords:
basalt; prestressing; slab elements; creep; losses; structural design; serviceability; nonlinear analysis
List of contributors:
Dal Lago, B.; Bisi, D.; Ferrara, L.
Book title:
SP-333: Advances in Concrete Bridges: Design, Construction, Evaluation, and Rehabilitation