Evaluation of the Duggan Test for Concretes Made of Different Types of Cements, MLR-97-8, 2000

(2000) Evaluation of the Duggan Test for Concretes Made of Different Types of Cements, MLR-97-8, 2000. Transportation, Department of

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Abstract

In searching for simple and reliable test methods to evaluate the quality of Iowa portland cement concrete (PCC) pavements, the Duggan test was conducted for concretes made of twenty-six types of cements in this laboratory research. The influence of some factors, such as chemical composition and type of cements, use of air-entraining agent and water reducer, and water to cement ratio, on the result of the Duggan test was examined. It was found that the expansion increases with increasing values of potassium alkali (K2O) and sulfur trioxide (SO3) in cements. It was also found that the Type I cements generally produce higher expansion than the Type II, IP and IS cements. Since it is difficult to identify the major mechanism leading to the expansion observed in the Duggan test, more studies are certainly needed before it can be used as a reliable test method for evaluating the service life of concrete pavement.

Item Type: Departmental Report
Keywords: Air entraining agents, Cement, Chemical composition, Concrete pavements, Expansion, Laboratory tests, Portland cement concrete, Service life, Test procedures, Water cement ratio, Water reducing agents, Duggan test method, MLR-97-8
Subjects: Transportation
Transportation > Roads and highways
Transportation > Research
Transportation > Research > Concrete
Transportation > Design and Construction
ID Code: 16922
Deposited By: Iowa DOT Library
Deposited On: 13 May 2014 12:14
Last Modified: 08 Apr 2015 19:42
URI: http://publications.iowa.gov/id/eprint/16922