Abstract: Water pressure in propagating concrete cracks is experimentally and numerically investigated. Ultimate application of this study is the uplift pressure in a concrete gravity dam during and after an earthquake. Numerous ...

Abstract: A large scale test on concrete joints subjected to constant compressive confinement and reverse cyclic shear load is performed. Shear strength, dilatancy degradation, and overall response are reported. A description of ...

Abstract: A comprehensive method for minimum cost design of simply supported, uniformly loaded, partially prestressed concrete beams is presented. Nine design variables are used—six geometrical dimensions, area of prestressing steel ...

Abstract: The development of an integrated hybrid expert system for structural design using commercially available software tools is reported. The engineer's design knowledge and code requirements are represented in knowledge base ...

Abstract: A generalized interface model for joints and cracks in quasi-brittle materials is formulated. The proposed model marries an existing fracture mechanics based one developed for monotonic loading of concrete with another ...

Abstract: Correlation between fractal dimensions and fracture properties in cementitious material is reported. Wedge splitting tests of specimens as much as 1.52 m (5 ft) long and having 7.62‐cm (3‐in.) maximum size aggregate were ...

Abstract: In gravity dams, crack growth is inhibited by gravitational effects; thus, correct model testing can only be accomplished in a centrifuge where the gravitational field is inversely proportional to the scale. Following an ...

Abstract: Fracture toughness tests on large‐scale cubical concrete specimens, with maximum size aggregate ranging from 19–76 mm (0.75–3.0 in.), are conducted under laboratory conditions. The laboratory experiments are based on the ...

Abstract: The following fracture models are assessed on the basis of an extensive testing program of large wedge‐splitting specimens: Bažant's size effect law; Hil‐lerborg's fictitious crack model; Carpinteri's brittleness model; ...

Abstract: The modeling of uplift pressures within a dam, on the foundation on which it was constructed, and on the interface between the dam and foundation is a critical aspect in the analysis of concrete gravity dams. The procedures ...