LARGE DISPLACEMENT PULLOUT PROBLEM IN FRC | |
| Conference | 30th Our World in Concrete and Structures (OWICs) - 2005 |
| Authors | P. Procházka*, Czech Association of Concrete Engineers, Prague, Czech Republic Š. Pešková, Czech Technical University Prague, Czech Republic |
| Handle | 100030046 |
| Key Words | Cohesion, fiber reinforced concrete, large displacement, tensile and shear strength |
| Abstract | In the last decades the fiber reinforced concrete increasingly becomes very popular in some fields of structures from reinforced concrete. Several experimental studies proved that the standard reinforced concrete could be improved by short fibers to avoid local warping and cracking. In order to restrain the reinforcing rebars from corrosion, the fibers are basically at help during the curing process of concrete. Particularly in geomechanics, or foundation engineering, where one-sided moistening of the structure is expected, the reason for usage of the fibers is advantageous due to obviously irregular dehydration. The volume ratio of fibers in these cases is very low, about 0.5 – 1.2 percents. Under some conditions curvilinear fibers seem to be preferred from the viewpoint of suppressing cracking in the system. This is the case of weak interfacial fiber-matrix zone. On the other hand it was proved that under certain conditions straight fibers are still more advantageous because of the financial expenses and also the bearing capacity of the aggregate is higher. This is why we concentrate our attention on large displacements in the vicinity of fibers embedded in concrete or cement paste. |
| Full Text |  100030046 |
| Link to this page | www.cipremier.com/100030046 |
