Compressive Strength vs Tensile Splitting Strength at 2 and 28 days - an experimental comparative study

Session

Civil Engineering, Infrastructure and Environment

Description

This paper describes an experimental comparative study examining the ratio between compressive strength and tensile splitting strength of concrete at two important curing periods, specifically 2 and 28 days. Concrete's mechanical properties, particularly compressive and tensile strengths, evolve over time, and understanding their relationship at different stages of curing is vital for optimizing concrete mix designs and assessing early-age and long-term performance. Experimental testing procedures following European standards for both compressive and tensile splitting strength at 2 and 28 days are detailed. These tests were performed on a large number of concrete specimens of 150 mm x 150 mm x 150 mm for C25/30 and C30/37, and the results are analyzed to determine the ratio between the two strength parameters at each hardening duration. The findings of this study reveal the dynamic relationship between compressive strength and tensile splitting strength as concrete matures. At 2 days, the ratio may differ significantly from that at 28 days due to the ongoing hydration and development of the concrete matrix. In this study, regression equations are developed to estimate the tensile splitting strengths, which are known as indirect tensile strengths, using the compressive strength of concrete and vice versa. A holistic understanding of these relationships can lead to optimized concrete formulations and enhanced structural integrity in various construction projects. This insight provides valuable information for construction professionals and engineers to assess the early-age performance and durability of concrete structures.

Keywords:

Concrete, Compressive Strength, Tensile Splitting Strength, Regression Equations.

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-550-95-6

Location

UBT Lipjan, Kosovo

Start Date

28-10-2023 8:00 AM

End Date

29-10-2023 6:00 PM

DOI

10.33107/ubt-ic.2023.345

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Oct 28th, 8:00 AM Oct 29th, 6:00 PM

Compressive Strength vs Tensile Splitting Strength at 2 and 28 days - an experimental comparative study

UBT Lipjan, Kosovo

This paper describes an experimental comparative study examining the ratio between compressive strength and tensile splitting strength of concrete at two important curing periods, specifically 2 and 28 days. Concrete's mechanical properties, particularly compressive and tensile strengths, evolve over time, and understanding their relationship at different stages of curing is vital for optimizing concrete mix designs and assessing early-age and long-term performance. Experimental testing procedures following European standards for both compressive and tensile splitting strength at 2 and 28 days are detailed. These tests were performed on a large number of concrete specimens of 150 mm x 150 mm x 150 mm for C25/30 and C30/37, and the results are analyzed to determine the ratio between the two strength parameters at each hardening duration. The findings of this study reveal the dynamic relationship between compressive strength and tensile splitting strength as concrete matures. At 2 days, the ratio may differ significantly from that at 28 days due to the ongoing hydration and development of the concrete matrix. In this study, regression equations are developed to estimate the tensile splitting strengths, which are known as indirect tensile strengths, using the compressive strength of concrete and vice versa. A holistic understanding of these relationships can lead to optimized concrete formulations and enhanced structural integrity in various construction projects. This insight provides valuable information for construction professionals and engineers to assess the early-age performance and durability of concrete structures.