• Manas Patil
• Mihir Chavan
• Hanmant Topaji
• Antara Kulkarni
• Dr. S.R. Bhagat

In this paper, the relationship between the modulus of elasticity and dynamic elastic modulus of concrete and the relationship between the modulus of elasticity and compressive strength of concrete have been formulated. These relationships are based on investigations of different types of concrete and take in to account the type and amount of aggregate and binder used. The dynamic elastic modulus of concrete was tested using ultrasonic pulse velocity method. This method could be used as a non-destructive way of estimating the compressive strength of concrete and dynamic elastic modulus. Here we show, from an extensive experimental program including non-destructive (ultrasonic pulse velocity test) and destructive tests (compressive testing machine) carried out on 54 cylindrical concrete specimens with three different concrete mixtures and three different sizes, the size independence of elastic properties of concrete regardless of the concrete mixes. This is in full contrast with the size-dependence of the compressive strength. the use of empirical expressions given in building codes (e.g., ACI 363 R-10, Eurocode 2) for estimating the elastic modulus from the compressive strength can lead to incorrect designs.

Concrete, dynamic elastic modulus, static elastic modulus, non-destructive testing, compressive strength.

"EXPERIMENTAL INVESTIGATION OF STRENGTH OF VARIOUS HARDENED CONCRETE MIXES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 7, page no.d155-d165, July-2022, Available :http://www.jetir.org/papers/JETIR2207318.pdf

"EXPERIMENTAL INVESTIGATION OF STRENGTH OF VARIOUS HARDENED CONCRETE MIXES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 7, page no. ppd155-d165, July-2022, Available at : http://www.jetir.org/papers/JETIR2207318.pdf