The Influence of the E-Modulus of Coarse Aggregate on the Stress-Strain Diagram of the Concrete with Frame Structure

Abstract:

The stress-strain diagrams of concrete with frame structure made with content of coarse aggregate from 0.56 till 0.64 m³/m³, with crushed granite (E-modulus = 71 GPa) and crushed silica sandstone (E-modulus = 42 GPa) are shown. It is shown that the stress-strain diagram of the concrete with frame structure made with coarse aggregate with E-modulus 42 GPa is almost linear over the entire loading range. Stress-strain diagram of concrete made with coarse aggregate with E-modulus 71 GPa has three zones. It is concluded that the concentration of intrastructural stresses under loading in the concrete with frame structure with a decrease in the ratio of E-modulus of the coarse aggregate/E-modulus of the mortar matrix is decrease that is why bad decision is to use coarse aggregate with high level of E-modulus, such as crushed granite, in concrete with frame structure.

• Periodical: Materials Science Forum (Volume 974)
• Pages: 299-304
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.974.299
• Online since: December 2019
• Authors: Grigorii Nesvetaev, Yulia Koryanova*, Elena Ivanchuk, A. Gortsevskoy
• Keywords: Coarse Aggregate, Concrete with Frame Structure, Creep, E-Modulus, Intrastructural Stress, Mortar Matrix, Ordinary Concrete, Self-Compacting Concrete, Shrinkage, Stress-Strain Diagram

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