A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Improvements to the methylene blue dye test for harmful clay in aggregates for concrete and mortar
Clay minerals found in natural aggregates are associated with harmful effects in concrete and mortar. The methylene blue dye adsorption test is included in the draft European Standards for the determination of harmful fines in aggregates for concrete and mortar. This test identifies deleterious clay minerals but does not give results in proportion to the damaging effects that different clay minerals have on the strength of concrete and mortar. This paper outlines some preliminary research which identifies a combination of clay treatment and a dye that can be used to test clays and rank them in order of their harmfulness. Further work is required to include a broader range of clay types and to develop the test for use on aggregates.
Improvements to the methylene blue dye test for harmful clay in aggregates for concrete and mortar
Clay minerals found in natural aggregates are associated with harmful effects in concrete and mortar. The methylene blue dye adsorption test is included in the draft European Standards for the determination of harmful fines in aggregates for concrete and mortar. This test identifies deleterious clay minerals but does not give results in proportion to the damaging effects that different clay minerals have on the strength of concrete and mortar. This paper outlines some preliminary research which identifies a combination of clay treatment and a dye that can be used to test clays and rank them in order of their harmfulness. Further work is required to include a broader range of clay types and to develop the test for use on aggregates.
Improvements to the methylene blue dye test for harmful clay in aggregates for concrete and mortar
Yool, A.I.G. (author) / Lees, T.P. (author) / Fried, A. (author)
Cement and Concrete Research ; 28 ; 1417-1428
1998
12 Seiten, 8 Quellen
Article (Journal)
English
Improvements to the Methylene Blue Dye Test for Harmful Clay in Aggregates for Concrete and Mortar
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