Investigation of Rapid Thermal Analysis Procedures for Prediction of the Service Life of PCCP Carbonate Coarse Aggregate: Phase I, Progress Report, HR-337, 1992

(1992) Investigation of Rapid Thermal Analysis Procedures for Prediction of the Service Life of PCCP Carbonate Coarse Aggregate: Phase I, Progress Report, HR-337, 1992. Transportation, Department of

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Abstract

The major objective of this research project is to utilize thermal analysis techniques in conjunction with x-ray analysis methods to identify and explain chemical reactions that promote aggregate related deterioration in Portland cement concrete. The first year of this project has been spent obtaining and analyzing limestone and dolomite samples that exhibit a wide range of field service performance. Most of the samples chosen for the study also had laboratory durability test information (ASTM C 666, method B) that was readily available. Preliminary test results indicate that a strong relationship exists between the average crystallite size of the limestone (calcite) specimens and their apparent decomposition temperatures as measured by thermogravimetric analysis. Also, premature weight loss in the thermogravimetric analysis tests appeared to be related to the apparent decomposition temperature of the various calcite test specimens.

Item Type: Departmental Report
Keywords: Aggregates; Carbonate rocks; Chemical reactions; Chemistry; Coarse aggregates; Deterioration; Dolomite; Limestone; Mineralogy; Portland cement concrete; Quality control; Service life; Thermal analysis; Thermogravimetric analysis; X ray analysis
Subjects: Transportation > Pavements
Transportation > Pavements > Concrete
Transportation
Transportation > Materials
Transportation > Materials > Gravel and aggregates
Transportation > Research
ID Code: 21995
Deposited By: Iowa DOT Library
Deposited On: 29 Apr 2016 19:14
Last Modified: 29 Apr 2016 19:14
URI: http://publications.iowa.gov/id/eprint/21995