An Improved Test for Generating Rapid, Accurate, and Reliable Crack Permeability Data for Cementitious Materials

Palin, D.; Mo, Yu; Wiktor, V.A.C.; Jonkers, H.M.

doi:10.1007/s40999-018-0326-8

An Improved Test for Generating Rapid, Accurate, and Reliable Crack Permeability Data for Cementitious Materials

Title

An Improved Test for Generating Rapid, Accurate, and Reliable Crack Permeability Data for Cementitious Materials

Author

Palin, D. (TU Delft Materials and Environment)
Mo, Yu (University of Maryland)
Wiktor, V.A.C. (TU Delft Materials and Environment)
Jonkers, H.M. (TU Delft Materials and Environment)

Date

2019

Abstract

Presented is a modified test for generating crack permeability data for cementitious materials. Single-parallel cracks were generated in mortar specimens. The width of the cracks was analysed through stereomicroscope and computer tomography, and the water permeability of the cracks was determined. Reduction factors and crack flow models were generated, and the reliability of those predictions was assessed. Cracks analysed through stereomicroscope produced reliable crack permeability predictions (r ² = 0.97–0.98), highlighting the importance of testing multiple (≥ 7) replicates. The modified test produced accurate cracks (i.e., cracks that were within 20 µm of their desired crack width) and was easy to use allowing rapid permeability data (i.e., 10 h for 21 specimens) to be generated. The modified test will be of great use for those wanting to generate rapid, accurate, and reliable crack permeability data for cementitious materials.

Subject

Cementitious materials
Defined crack widths
Durability
Microcracking
Reliability
Water permeability

To reference this document use:

http://resolver.tudelft.nl/uuid:4d3fe1b4-2156-4c85-bc52-442f40ff276f

DOI

https://doi.org/10.1007/s40999-018-0326-8

ISSN

1735-0522

Source

International Journal of Civil Engineering, 17 (5), 645-652

Part of collection

Institutional Repository