Skip to Main content Skip to Navigation
Journal articles

Greening effect of concrete containing granulated blast-furnace slag composite cement: Is there an environmental impact?

Abstract : The "greening effect" refers to hardened concrete containing Granulated Blast-Furnace Slag (GBFS) that displays a vivid blue-green color after removal of formwork. This temporary coloration effect, which fades within a few days to weeks, has raised concerns about its potential impact on the environment. Three types of leaching tests were conducted to assess different potential release scenarios: a sprinkling test, a static monolith tank test and a batch test on crushed samples. Slag content was linked to a higher release of sulfur anions in the leachates, in the form of sulfides, thiosulfates and sulfates. Most of these anions came from the GBFS, where sulfur is mainly in the form of sulfides with thiosulfates and sulfates as the main products of sulfide oxidation. Sulfate levels, however, were lower than threshold limit values for both inert waste and alternate materials reused in road construction. Moreover, no chromium, or other hazardous metals, were detected in the leachates.
Complete list of metadatas

Cited literature [38 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02894613
Contributor : Julien Couvidat <>
Submitted on : Thursday, July 9, 2020 - 11:28:39 AM
Last modification on : Wednesday, October 14, 2020 - 3:45:31 AM
Long-term archiving on: : Monday, November 30, 2020 - 5:30:45 PM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2020-12-23

Please log in to resquest access to the document

Identifiers

Citation

Julien Couvidat, Cécile Diliberto, Eric Meux, Laurent Izoret, André Lecomte. Greening effect of concrete containing granulated blast-furnace slag composite cement: Is there an environmental impact?. Cement and Concrete Composites, Elsevier, 2020, 113, pp.103711. ⟨10.1016/j.cemconcomp.2020.103711⟩. ⟨hal-02894613⟩

Share

Metrics

Record views

91