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CONSTITUTIVE MODELLING OF CONCRETE AND ROCKS UNDER MULTIAXIAL COMPRESSIVE LOADINGS.SALAMI, MOHAMMAD REZA. January 1986 (has links)
Characterization of stress-deformation behavior of concrete and rocks have been a subject of active research for a long time. Linear elastic, nonlinear (piecewise) linear elastic, elastic-plastic and endochronic models have been proposed and used by various investigators and the literature on the subjects is very wide. A review of various models together with their implementation is numerical (finite element) procedures is presented in Ref. (77). The primary objective of the present study is to develop a generalized constitutive model based on the theory of plasticity. Although such a model can be used for a wide range of materials, in this dissertation its applications to plain concrete and rocks are emphasised. One of the main objectives of this dissertation is to study constitutive behavior of concrete and soapstone under multiaxial load histories by using a truly triaxial or multiaxial testing device. The truly triaxial device is capable of applying a general three-dimensional state of stress. Samples can be tested along any three dimensional stress path. Therefore, constitutive behavior of concrete and soapstone can be studied under all possible states of stress. The conventional, octahedral, proportional loading and circular stress test series are conducted using the truly triaxial cubical device. For meaningful results, samples with consistent initial properties are essential. In order to produce samples with uniform initial properties such as density, equipment and procedures are developed to standardize the sample preparation process. The test data is used to determine the material constants associated with the proposed constitutive model. The model is then verified by back-predicting the stress-strain curves obtained from the laboratory.
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472 |
FLEXURAL STIFFNESS OF CIRCULAR REINFORCED CONCRETE COLUMNS (SLENDERNESS, ACI CODE, LOAD, DESIGN)Alameddine, Fadel, 1964- January 1986 (has links)
No description available.
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473 |
Ultimate load analysis of anisotropic and reinforced concrete plates and shellsFigueiras, J. A. January 1983 (has links)
No description available.
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474 |
The design of haunched composite beam frames for buildingsRackham, James William January 1992 (has links)
No description available.
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475 |
The use of condensed silica fume in Portland cement groutsTank, Suresh Bhagwanji January 1987 (has links)
No description available.
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476 |
The pressure of concrete on formwork in narrow sectionsClear, C. A. January 1986 (has links)
No description available.
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477 |
The effects of moisture on the thermal properties of concrete between -80deg C and 0deg CMohd Yusof, K. B. January 1984 (has links)
No description available.
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478 |
Tensile properties of heat damaged concreteVega, Jens FernaÌndez January 2001 (has links)
No description available.
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479 |
Effect of confinement on structural behaviour of axially loaded lightweight concrete columnsAly, Atif M. A. H. January 1987 (has links)
No description available.
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480 |
Pore sollution composition and chloride-induced corrosion of steel in concreteYonezawa, T. January 1988 (has links)
No description available.
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