By L. Elfgren, Surendra Shah
This e-book provides the newest study findings of the quick constructing purposes of fracture mechanics to concrete buildings. Key papers from prime specialists within the box describe latest and new modelling suggestions within the research of fabrics and constructions. The booklet explains the sensible software of fracture mechanics to structural modelling, bending, shear, bond and anchorage. The complaints of this RILEM Workshop might be an enormous reference for these engaged in layout, improvement, study and instructing within the box of concrete constructions.
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Extra resources for Analysis of concrete structures by fracture mechanics: proceedings of the International RILEM workshop, Abisko, Sweden, June 28-30, 1989
The paper presents the testing arrangement and discusses a few aspects of the determination of the fracture zone properties. 1 Introduction The present project is part of a major fracture-mechanics project which has been going on since 1974 . The project has resulted in the development of the Fictitious Crack Model (FCM), Hillerborg (1989-a), which has become the principal model regarding fracture-mechanics analyses at the Division of Building Materials, Lund Institute of Technology. The goal of this particular project has been to determine material properties which are necessary for mixed mode I and II fracture-mechanics applications of FCM.
Here only some of the results will be discussed. 30 ANALYSIS OF CONCRETE STRUCTURES Fig. 4 Tensile shear at constant crack opening: (a) P-δ diagram, (b) load-path P-Ps and (c) photo-elastic fringes at stage 27. Tensile shear at constant crack-opening (load-path 1) A number of tests was carried out using reflection photo-elasticity as a crack detection technique. 25 mm) of photo-elastic material was glued to the concrete specimen. In Fig. 4 some of the results are shown. 4 µm respectively, atensile shear load was applied in the horizontal direction.
Square concrete plates of size 200×200×50 mm are loaded in the apparatus. The loading procedure is clarified in Fig. 2. In uniaxial tension, a concrete plate is glued between the upper side of the middle frame and the lower side of the coupled outer frames (Fig. 2a). When the glue has set, the specimen is loaded by moving the middle frame upward. Because the coupled outer frames are fixed in the vertical direction, a tensile stress develops in the concrete specimen, which will eventually fracture the plate (Fig.
Analysis of concrete structures by fracture mechanics: proceedings of the International RILEM workshop, Abisko, Sweden, June 28-30, 1989 by L. Elfgren, Surendra Shah