scholarly journals On the experimental investigation of pozzolanic lime mortar stress-strain behavior and deformation characteristics when subjected to unloading-reloading cycles

2018 ◽  
Vol 10 ◽  
pp. 129-134
Author(s):  
K. Kaklis ◽  
Z. Agioutantis ◽  
S. Mavrigiannakis ◽  
P. Maravelaki-Kalaitzaki
Keyword(s):  
Experimental Investigation ◽  
Deformation Characteristics ◽  
Stress Strain ◽  
Lime Mortar ◽  
Strain Behavior

The Influence of State of Stress on the Stress-Strain Behavior of Rocks

1972 ◽  
Vol 94 (1) ◽  
pp. 238-242 ◽  
Author(s):  
S. R. Swanson ◽  
W. S. Brown
Keyword(s):  
Experimental Investigation ◽  
Strain Response ◽  
Volume Changes ◽  
Stress Strain ◽  
Strain Behavior ◽  
Permanent Set ◽  
State Of Stress

An experimental investigation of the stress-strain behavior of several rocks is described. The stress-strain response of the rocks tested is seen to be quite complicated, exhibiting a number of inelastic effects even in rocks considered brittle under pressure. The inelasticity is manifested in permanent set and hysteresis on unloading and volume changes produced by shearing stresses.

scholarly journals The influence of grouting and reinforcement ratio in the concrete block masonry compressive behavior

2015 ◽  
Vol 8 (3) ◽  
pp. 341-364 ◽  
Author(s):  
J. S. CAMACHO ◽  
B. G. LOGULLO ◽  
G. A. PARSEKIAN ◽  
P. R. N. SOUDAIS
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Concrete Block ◽  
Reinforcement Ratio ◽  
Compressive Behavior ◽  
Stress Strain ◽  
Strain Behavior

This paper presents an experimental investigation on the compressive strength and stress-strain curves of concrete block masonry with varying block and grout strengths and reinforcement ratio. The three-block prisms, built with 8.5 and 15.0 MPa blocks, were tested hollow and filled with 17.0 and 30.0 MPa compressive strength grouts. In addition, prisms and walls with reinforcement rates of 0.15%, 0.40% and 1.0 % were also tested. With the results, it was possible to measure the compressive strength and stress-strain behavior of masonry with inclusion of different grout and reinforcement components, giving parameters for better evaluation of their performance and design. Among the conclusions, it was observed that increasing the compressive strength of masonry is not proportional to the increase of the grouting area and the efficiency of reinforcement to increase compressive strength is low. Stress-strain curves for the several materials combinations are made available.

Effect Of Elevated Temperatures On Complete Concrete Deformation Diagrams

2019 ◽  
pp. 9-14
Keyword(s):  
Experimental Data ◽  
Elastic Modulus ◽  
Elevated Temperatures ◽  
Peak Load ◽  
Relative Deformation ◽  
Deformation Characteristics ◽  
Compression Tests ◽  
Strain Behavior ◽  
Different Temperatures ◽  
Deformation Diagrams

The analysis of the previous results of the study on concrete stress-strain behavior at elevated temperatures has been carried out. Based on the analysis, the main reasons for strength retrogression and elastic modulus reduction of concrete have been identified. Despite a significant amount of research in this area, there is a large spread in experimental data received, both as a result of compression and tension. In addition, the deformation characteristics of concrete are insufficiently studied: the coefficient of transverse deformation, the limiting relative compression deformation corresponding to the peak load and the almost complete absence of studies of complete deformation diagrams at elevated temperatures. The two testing chambers provided creating the necessary temperature conditions for conducting studies under bending compression and tension have been developed. On the basis of the obtained experimental data of physical and mechanical characteristics of concrete at different temperatures under conditions of axial compression and tensile bending, conclusions about the nature of changes in strength and deformation characteristics have been drawn. Compression tests conducted following the method of concrete deformation complete curves provided obtaining diagrams not only at normal temperature, but also at elevated temperature. Based on the experimental results, dependences of changes in prism strength and elastic modulus as well as an equation for determining the relative deformation and stresses at elevated temperatures at all stages of concrete deterioration have been suggested.

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