concrete rock fracture

  • MS Series Triaxial Horizontal ScreenMS Series Triaxial Horizontal Screen
  • MZA/K Series Circular Vibrating ScreenMZA/K Series Circular Vibrating Screen
  • Fracture Processes in Concrete. Rock and Ceramics

    Baiant, l.P. (1991). "Size effects on fracture and localization: Aper,cu of recent advances and their extension to simultaneous fatigue and rate sensitivity" in Fracture Pro-cesses in Concrete, Rock and Ceramics (Proceedings of In-temational RILEMIESIS Conference, "Fracture Processes in Brittle Disordered Materials: Concrete, Rock, Ceramics."

  • Microplane model for progressive fracture of concrete and rock

    T1 - Microplane model for progressive fracture of concrete and rock. AU - Bažant, Zdeněk P. AU - Oh, Byung H. PY - 1985/4. Y1 - 1985/4. N2 - A constitutive model for a brittle aggregate material that undergoes progressive tensile fracturing or damage is presented.

  • Fracture Processes in Concrete, Rock and Ceramics ...

    Fracture Processes in Concrete, Rock and Ceramics: Proceedings of the International RILEM/ESIS Conference (Rilem Proceedings) [Bakker, A., Rotts, J.G., van Mier, J.G.M.] on Amazon . *FREE* shipping on qualifying offers. Fracture Processes in Concrete, Rock and Ceramics: Proceedings of the International RILEM/ESIS Conference (Rilem Proceedings)

  • Fracture Mechanics of Concrete: Applications of Fracture ...

    FRACTURE MECHANICS OF CONCRETE AND ROCK . This book offers engineers a unique opportunity to learn, from internationally recognized leaders in their field, about the latest theoretical advances in fracture mechanics in concrete, reinforced concrete structures, and rock.

  • Determination of fracture energy, process zone length and ...

    previous fracture tests of rock as well as concrete and describe them adequately in relation to the inevitable random scatter of the tests. 1. Introduction The fracture resistance of many heterogeneous aggregate materials such as rocks, concretes and various ceramics, as well as some metals, is increased by a toughening mechanism which

  • Size Effect in Blunt Fracture: Concrete, Rock, Metal ...

    The size effect in brittle failure of concrete structures or rock masses may be analyzed on the basis of the hypothesis that the potential energy release caused by fracture depends on both: (a) The length of the crack band; and (b) the area of the crack band. 2.

  • Fracture of Concrete and Rock

    The International Conference on Fracture of Concrete and Rock was organized by the Society for Experimental Mechanics (SEM) subdivision on Fracture of Concrete and Rock and RILEM Committee 89-FMT Fracture MechanicS of Concrete; Test Methods. The venue was Houston, Texas on …

  • Hard particle force in a soft fracture | Scientific Reports

     · The fissure patency of a rock mass is an important factor contributing towards the fluid production efficiency. Debris particles generated by the crushing of rock masses or …

  • Experimental and numerical investigations on fracture ...

     · Thus, the fracture processes of the rock–concrete composite beams can be simulated by introducing the initial fracture criterion to determine the crack propagation. By comparing the load versus crack mouth opening displacement curves and FPZ evolution, the numerical and experimental results show a reasonable agreement, which verifies the ...

  • Chapter 4 Engineering Classification of Rock Materials

    Table 4–13 Fracture type 4–21 Table 4–14 Fracturing density description chart 4–21 Table 4–15 Joint set spacing categories 4–22 Table 4–16 Aperture category 4–23 Table 4–17 Joint infilling 4–24 Table 4–18 Joint persistence categories 4–25 Table 4–19 Types of joint ends 4–25 Table 4–20 Descriptors for weathering condition of joint face rock 4–27

  • Scaling phenomena due to fractal contact in concrete and ...

    Concrete-to-concrete friction contributes in many cases to the stability of a structure. At different scales, the slope stability of rock joints is deeply influenced by the surface morphology and shows a marked size-dependence. In this paper, the closure and sliding-dilatant behaviour of cracks in concrete and rocks is investigated by means of a coupled numerical/experimental approach.

  • Fracture of Brittle Disordered Materials: Concrete, Rock ...

     · This book derives from the invited IUTAM Symposium in September 1993. The contributions discuss recent advances in fracture mechanics studies of concrete, rock, ceramics and other brittle disordered materials at micro and structural levels. It draws together research and new applications in continuum, damage and fracture mechanics approaches.

  • Scaling phenomena due to fractal contact in concrete and ...

    At scales different from the usual scales of concrete structures, the engineering analysis of rock structures, like slopes, excavations or tunnels, needs a model of the mechanical response of the rock mass. Far from being a continuum, the rock mass is a complex system composed of blocks and fractures.

  • US Patent Application for NON-DESTRUCTIVE ANCHOR BOLT …

     · A tester for evaluating pullout load capacity and bond quality of anchor bolts embedded in concrete includes a Schmidt hammer for measuring a rebound number and an ultrasonic pulse velocity tester for measuring the transit time of a pulse transmitted through concrete surrounding an anchor bolt. The rebound number and the transit time are combined and matched against a database record which ...

  • [PDF] Size Effect in Blunt Fracture: Concrete, Rock, Metal ...

    The fracture front in concrete, as well as rock, is blunted by a zone of microcracking, and in ductile metals by a zone of yielding. This blunting causes deviations from the structural size effect known from linear elastic fracture mechanics (LEFM). The size effect is studied first for concrete or rock structures, using dimensional analysis and illustrative examples.

  • Fracture and Damage of Concrete and Rock

     · This book forms the Proceedings of the International Conference held in Vienna in November 1992 dealing with ageing, fatigue and fracture of concrete and concrete structures. Special sections cover demolition and recycling, and anchorage engineering. As well as selected international contributions, five specially invited plenary papers are included from Austria, Spain, Japan, Denmark …

  • Study of the Dynamic Mechanical Properties of Recycled ...

    In order to study the dynamic mechanical properties of recycled concrete with ferronickel slag, dynamic experiments on cylindrical specimens ( φ 73 mm × 36.5 mm) were performed using a split Hopkinson pressure bar (SHPB) system. The effects of loading rate and recycled aggregate replacement rate on the compressive strength, toughness index, peak strain, and failure pattern of the concrete ...

  • RockFrac rock splitting mortar for no vibration non ...

    RockFrac® rock splitting mortar is a non-explosive concrete and rock demolition agent. Mixed with water and poured into drilled holes, it enables controlled concrete demolition and rock fracturing without the use of explosives. It is fast, economical, convenient and environmentally friendly.

  • How to Fracture Concrete in Blender

     · how to fracture concrete multiple times in Blender using cell fracture, rigid body physics, and constraints!

  • Concrete Rock Interface | Fracture Mechanics | Fracture

    Fracture of Rock-Concrete Interfaces: Laboratory Tests and Applications by J. M. Chandra Kishen and Victor E. Saouma The fundamental understanding of the fracture behavior at the rock-concrete interface requires evaluation of the fracture energy, which is an interface material property. As in concrete or rock, fracture at the interface is ...

  • Fracture Mechanics of Concrete: Applications of Fracture ...

     · FRACTURE MECHANICS OF CONCRETE AND ROCK This book offers engineers a unique opportunity to learn, frominternationally recognized leaders in their field, about the latesttheoretical advances in fracture mechanics in concrete, reinforcedconcrete structures, and rock. At the same time, it functions as asuperb, graduate-level introduction to ...

  • Onset dynamics of air-water menisci on rock fracture ...

     · @article{osti_1787298, title = {Onset dynamics of air-water menisci on rock fracture surfaces}, author = {Horodecky, B. B. and Perfect, E. and Bilheux, H. Z. and Brabazon, J. W. and Gates, C. H.}, abstractNote = {Information on menisci dynamics and equilibrium contact angles, 𝜃e, is needed for modeling multiphase flow of fluids in geologic formations.

  • Size dependence of concrete fracture energy determined by ...

    specimens. the fracture energy according to the RILEM definition is dependent on the notch depth. 1. Introduction Since concrete is a brittle heterogeneous material in which fracture is preceded by a large fracture process zone of variable size, determination of the fracture energy of concrete…

  • Fracture Mechanics of Concrete: Applications of Fracture ...

    FRACTURE MECHANICS OF CONCRETE AND ROCK This book offers engineers a unique opportunity to learn, frominternationally recognized leaders in their field, about the latesttheoretical advances in fracture mechanics in concrete, reinforcedconcrete structures, and rock. At the same time, it functions as asuperb, graduate-level introduction to fracture mechanics conceptsand analytical techniques.

  • Size effect in blunt fracture: Concrete, rock, metal — Northwestern …

    What Do The Cracks in Concrete Structures Mean? | ArchDaily

  • Fracture and Damage of Concrete and Rock

    Find many great new & used options and get the best deals for Fracture and Damage of Concrete and Rock - FDCR-2 9780367863821 | Brand New at the best …

  • Fracture Networks in Rock | Solidity

    Fracture Networks in Rock. Natural fractures such as joints and faults are ubiquitous in crustal rocks. These naturally occurring discontinuities often comprise complex networks and create highly disordered geological conditions. Fractures, along which rupture has caused cohesion loss and mechanical weakness in the rock, often dominate the ...

  • Fracture processes in concrete, rock and ceramics ...

    Get this from a library! Fracture processes in concrete, rock and ceramics : proceedings of the International RILEM/ESIS Conference ''Fracture Processes in Brittle Disordered Materials--Concrete, Rock, Ceramics''. [J G M van Mier; J G Rots; A Bakker; International Union of Testing and Research Laboratories for Materials and Structures.;

  • EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON …

    Fracture energy test results show that normal and high-strength concretes containing basalt yield significantly higher fracture energies than concretes containing limestone. The fracture energy of high-strength concrete decreases with an increase in aggregate size, while the fracture energy of normal-strength concrete increases with

  • A guide to core logging for rock engineering

    type, separation, fracture filling (presence or absence), roughness and orientation. If significant an additional description of the nature of the fracture filling including moisture, colour, consistency or hardness, soil or rock type and origin is added. The significance of

  • Simulating fracture propagation in rock and concrete by an ...

     · This paper develops a practical approach to simulating fracture propagation in rock and concrete based on an augmented virtual internal bond (VIB) method in which the cohesion of solid is modeled as material particles interconnected by a network of randomized virtual micro bonds described by the Xu–Needleman potential.

  • 9780471303114: Fracture Mechanics of Concrete ...

     · FRACTURE MECHANICS OF CONCRETE AND ROCK This book offers engineers a unique opportunity to learn, from internationally recognized leaders in their field, about the latest theoretical advances in fracture mechanics in concrete, reinforced concrete structures, and rock. At the same time, it functions as a superb, graduate-level introduction to ...

  • Fracture testing of concrete and rock materials ...

     · Nuclear Engineering and Design 133 (1992) 83-95 83 North-Holland Fracture testing of concrete and M.P. Luong CNRS-LMS, Ecole Polytechnique, 91128 Palaiseau Cedex, France Received 1 May 1990 rock materials This paper describes new testing devices in order to measure experimentally the mode-I (direct tensile test), mode-II (direct shear test) and mode-III (direct torsion test) fracture ...

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