write the relation between the characteristic compressive strength to fracture modulus of elasticity
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Modulus of elasticity of concrete is frequently expressed in terms of compressive strength. While many empirical equations for predicting modulus of elasticity have been proposed by many investiga- tors, few equations are considered to cover the entire data. The reason is considered to be that the mechanical properties of concrete are highly dependent on the properties and proportions of binders and aggregates. This investigation was carried out as a part of the work of the Research Committee on High-strength Concrete of the Architectural Institute of Japan (AIJ) and National Research and Development Project, called New RC Project, sponsored by the Ministry of Construction. More than 3,000 data, obtained by many investigators us- ing various materials, on the relationship between compressive strengths and modulus of elasticity were col- lected and analyzed statistically. The compressive strength of investigated concretes ranged from 20 to 160 MPa. As a result, a practical and universal equation is proposed, which takes into consideration types of coarse aggregates and types of mineral admixtures.
Modulus of elasticity of concrete is frequently expressed in terms of compressive strength. While many empirical equations for predicting modulus of elasticity have been proposed by many investiga- tors, few equations are considered to cover the entire data. The reason is considered to be that the mechanical properties of concrete are highly dependent on the properties and proportions of binders and aggregates. This investigation was carried out as a part of the work of the Research Committee on High-strength Concrete of the Architectural Institute of Japan (AIJ) and National Research and Development Project, called New RC Project, sponsored by the Ministry of Construction. More than 3,000 data, obtained by many investigators us- ing various materials, on the relationship between compressive strengths and modulus of elasticity were col- lected and analyzed statistically. The compressive strength of investigated concretes ranged from 20 to 160 MPa. As a result, a practical and universal equation is proposed, which takes into consideration types of coarse aggregates and types of mineral admixtures.
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