Chapter, 2024

Field Investigation of Concrete Blocks with Different ASR Reactive Aggregate Types with and Without Surface Hydrophobic Impregnation

Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete 978-3-031-59418-2, 978-3-031-59419-9, Pages 550-557

Editors: Leandro F.M. Sanchez; Cassandra Trottier

Series: RILEM Bookseries ISSN 2211-0852, 2211-0844, 2211-0852, 2211-0844, Volume 49, Pages 550-557

Publisher: Springer Nature

DOI: 10.1007/978-3-031-59419-9_64

Contributors

Hansen, Kurt Kielsgaard 0000-0002-2985-1867 (Corresponding author) [1] Grelk, Bent [1] [2] Kofoed, R. [3] Mørk, J B [3]

Affiliations

  1. [1] Technical University of Denmark
    2. [NORA names: DTU Technical University of Denmark; University; Denmark; Europe, EU; Nordic; OECD];
  2. [2] Grelk Consult, 2700, Brønshoj, Denmark
    3. [NORA names: Denmark; Europe, EU; Nordic; OECD];
  3. [3] Ramboll (Denmark)
    4. [NORA names: Ramboll Group; Private Research; Denmark; Europe, EU; Nordic; OECD]

Abstract

Previous field investigation of concrete blocks with different ASR reactive aggregate types with and without surface hydrophobic silane impregnation in the period 2018–2023 has shown promising results. The aggregate in some of the first series of test is fast reactive as they contain a high amount (5–6 vol %) of porous calcareous opaline flint (silicified limestone). Over a period of more than 5 years, moisture content (RH) has been continuously measured inside the concrete cubes and registered whether the concrete has developed harmful expansions and/or visible cracks. These measurements have now been continued for more than 5.5 years on the exposure field on the Technical University of Denmark (DTU) near Copenhagen, Denmark.

Keywords

ASR, Copenhagen, Denmark, RH, Technical, Technical University, aggregate type, aggregation, amount, block, concrete, concrete blocks, concrete cubes, content, crack, cube, expansion, exposure, exposure field, field, field investigations, flint, hydrophobic impregnation, impregnation, investigation, limestone, measurements, moisture, moisture content, period, results, silane impregnation, silicified limestone, surface, test, type, visible cracks, years

Data Provider: Digital Science

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