Chemical Reactions Involving Aggregates, HR-15, 1960

(1960) Chemical Reactions Involving Aggregates, HR-15, 1960. Transportation, Department of

IADOT_hr15_Chemical_Reactions_Involving Aggregates_1960.pdf

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The discussion presented below concerns the section on "Unidentified Cement-Aggregate Reactions" in which mention is made of concrete deterioration related to argillaceous dolomitic limestone aggregates. A considerable amount of research has been conducted on carbonate aggregate-cement reactions as part of the general study on the suitability of carbonate rocks as concrete aggregate which inadvertently did not reach the authors in time to be incorporated in their paper. These reactions which occur in response to the alkaline environment of concrete are not typical alkali-aggregate reactions associated with siliceous aggregates such as opaline cherts, volcanic glasses and etc. The reactions are associated with certain carbonate aggregates whose service records indicate deleterious performance in concrete has occurred. It is my purpose to review briefly carbonate aggregate research conducted at Iowa State University and present some new data on the problem of carbonate aggregate-cement paste reactions.

Item Type: Departmental Report
Keywords: Aggregate tests, Carbonates, Deterioration, Limestone aggregates, Materials tests
Subjects: Transportation > Pavements
Transportation > Pavements > Concrete
Transportation > Materials
Transportation > Materials > Gravel and aggregates
Transportation > Maintenance and preservation
ID Code: 19609
Deposited By: Iowa DOT Library
Deposited On: 28 May 2015 19:54
Last Modified: 28 May 2015 19:54