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EnglishFiber reinforced polymers (FRP) have been successfully used in rehabilitation of aged concrete structures, but still little research have been undertaken to develop compatible, durable and cost-saving technologies for structural conservation of monumental buildings. A preliminary study on the use of fiber reinforced cement-polymer matrix composites using prepreg technology is here presented. An experimental program has been therefore developed to define a new waterborne polymer-added cement matrix in order to cast pre-impregnated carbon fiber fabrics. Several variables, including different types of water-redispersible polymers, polymer/cement content ratios and application procedures have been investigated to obtain pre-impregnated fiber mat to be used on site. The impregnated textiles were therefore applied onto standard prismatic mortar samples, by a cement-polymer based grout by hand lay-up technique and subjected to three-point bending tests after room temperature and relative humidity (R. H.) curing. The results, compared to those obtained applying a reference epoxy-based system, exhibited promising applicability and mechanical properties.
| Titolo: | Cement-polymer prepreg carbon fabrics in concrete strengthening |
| Autore/i: | SANDROLINI, FRANCO; MANZI, STEFANIA; NATALI MURRI, ANNALISA |
| Autore/i Unibo: | |
| Anno: | 2010 |
| Rivista: | |
| Abstract: | Fiber reinforced polymers (FRP) have been successfully used in rehabilitation of aged concrete structures, but still little research have been undertaken to develop compatible, durable and cost-saving technologies for structural conservation of monumental buildings. A preliminary study on the use of fiber reinforced cement-polymer matrix composites using prepreg technology is here presented. An experimental program has been therefore developed to define a new waterborne polymer-added cement matrix in order to cast pre-impregnated carbon fiber fabrics. Several variables, including different types of water-redispersible polymers, polymer/cement content ratios and application procedures have been investigated to obtain pre-impregnated fiber mat to be used on site. The impregnated textiles were therefore applied onto standard prismatic mortar samples, by a cement-polymer based grout by hand lay-up technique and subjected to three-point bending tests after room temperature and relative humidity (R. H.) curing. The results, compared to those obtained applying a reference epoxy-based system, exhibited promising applicability and mechanical properties. |
| Data prodotto definitivo in UGOV: | 2011-02-27 22:38:52 |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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