<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>A parametric analysis of glue spall stress (concrete surface tensile stress at ice-discontinuities by differential thermal expansion ice-concrete) as affected by internal cracking in concrete in the CEN/TS 12390-9 salt-frost slab-test was made. Increasing differential thermal expansion ice-concrete (∆α) and reduced E-modulus and Poisson ratio (ν) due to internal cracking were used based on data from Part 1 of this study. For the concrete specimens in Part 1 of this study [<xref ref-type="bibr" rid="j_ncr-2023-0016_ref_001">1</xref>] glue spall stress increased by 14 % due to internal cracking whereas reduced ice thickness of 1 – 2 mm due to accelerated Liquid Uptake (LU) in wet freeze/thaw reduced glue spall stress by 34 to 65 %. LU should hence be accounted for in modelling scaling, both due to reduced ice thickness and increased ∆α due to internal cracking. Increased crack penetration depth and its effect on scaled particle size due to internal cracking were also analyzed.</p>
</abstract>

A parametric analysis of glue spall stress (concrete surface tensile stress at ice-discontinuities by differential thermal expansion ice-concrete) as affected by internal cracking in concrete in the CEN/TS 12390-9 salt-frost slab-test was made. Increasing differential thermal expansion ice-concrete (∆α) and reduced E-modulus and Poisson ratio (ν) due to internal cracking were used based on data from Part 1 of this study. For the concrete specimens in Part 1 of this study [1] glue spall stress increased by 14 % due to internal cracking whereas reduced ice thickness of 1 – 2 mm due to accelerated Liquid Uptake (LU) in wet freeze/thaw reduced glue spall stress by 34 to 65 %. LU should hence be accounted for in modelling scaling, both due to reduced ice thickness and increased ∆α due to internal cracking. Increased crack penetration depth and its effect on scaled particle size due to internal cracking were also analyzed.

Frost-salt Testing Non-air Entrained High-performance Fly-ash Concrete Part II: Parameter Study of Effect of Internal Cracking on Glue Spall Stress

University for Continuing Education Krems

Department of Knowledge and Communication Management

Department of Architecture, Materials, and structures

Norwegian University of Science and Technology

Nordic Concrete Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A parametric analysis of glue spall stress (concrete surface tensile stress at ice-discontinuities by differential thermal expansion ice-concrete) as affected...

Frost-salt Testing Non-air Entrained High-performance Fly-ash Concrete Part II: Parameter Study of Effect of Internal Cracking on Glue Spall Stress

Online veröffentlicht: 05. Juli 2024

Seitenbereich: 43 - 55

Eingereicht: 15. Dez. 2023

Akzeptiert: 17. Juni 2024

DOI: https://doi.org/10.2478/ncr-2023-0016

Schlüsselwörter
Non-air entrained High performance low carbon concrete, Freeze-thaw, Internal damage, Glue spall stress analysis

© 2024 Iman Asadi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Frost-salt Testing Non-air Entrained High-performance Fly-ash Concrete Part II: Parameter Study of Effect of Internal Cracking on Glue Spall Stress

Online veröffentlicht: 05. Juli 2024

Seitenbereich: 43 - 55

Eingereicht: 15. Dez. 2023

Akzeptiert: 17. Juni 2024

DOI: https://doi.org/10.2478/ncr-2023-0016

SchlüsselwörterNon-air entrained High performance low carbon concrete, Freeze-thaw, Internal damage, Glue spall stress analysis

© 2024 Iman Asadi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
Non-air entrained High performance low carbon concrete, Freeze-thaw, Internal damage, Glue spall stress analysis