The Experimental Study of the Influence of Function and Arrangement of Geogrids and Uniform Stress Distribution in the Tensile Area of the Concrete structures

Subject Areas : Analysis of Structure and Earthquake

Ashkan khodaBandeLou ¹ , aliasgar akbari bargoshadi ²

1 - department of civil engineering, urmia
2 - Technical Engineering, Engineering, Azad University, Urmia Branch, Urmia, Iran

Received: 2019-01-16 Accepted : 2019-03-12 Published : 2019-12-18

Keywords: Stress distribution, geogrid, tensile failure, tensile region, flexibility of concrete, plastic materials,

Abstract :

Concrete is one of the main materials used in the construction industry and there are disadvantages to the conventional method of using steel, which reduces the breakage and concrete failure. Today, the spread of the science of applying polymeric materials to overcome these disadvantages has quickly taken its place in concrete ingredients. These materials can produce stronger concrete with greater flexibility and a smoother surface and can increase concrete resistance to erosion, impact and corrosion. In this research, using Geogrid, which is a family of geosynthetics, the tensile strength of concrete increased by 15%. Because it is used as a solid with very low risk, the geogrid is placed at different distances from the neutral warp. Based on the results of the experiments and according to the diagrams obtained from the geogrid experiments, if utilized as a semi-solid in the tensile region, the geogrids will result in the equal distribution of stresses and will have a better effect on increasing tensile strength. Of course, using a combination of steel and geogrid in the tensile region and according to the geogrid characteristics, it is easier to achieve a soft failure (tensile failure), which is the best type of failure for concrete structures.