Title: Double-Punch Test of Fiber-Reinforced Concrete: Effect of Specimen Origin and Size

Author(s): Carlos Aire, Sergio Carmona, Antonio Aguado, and Climent Molins

Publication: Materials Journal

Volume: 112

Issue: 2

Appears on pages(s): 199-208

Keywords: Barcelona test; double-punch test; fiber-reinforced concrete; residual strength; toughness

DOI: 10.14359/51687362

Date: 3/1/2015

Abstract:
One of the main advantages of the Barcelona test is that the properties of fiber-reinforced concrete (FRC) can be determined by using cylindrical specimens, thereby permitting the use of cores to control the quality of concrete used in construction. Using the results of an extensive experimental campaign, this paper establishes the relationship between the unitary load of cracking, residual strength and toughness of molded specimens, and cores of concretes reinforced with different types of fibers but with the same aspect ratio. The fiber diameter is observed to significantly influence in the properties of molded specimens, whereas in the cores, the number of fibers that lose anchoring due drilling determines the response of the FRC.