United States Department of Transportation
i
Influences of cement source and sample of cement source on compressive strength variability of gravel aggregate concrete.
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2013-06-01
[PDF-2.58 MB]
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Abstract:The strength of concrete is influenced by each constituent material used in the concrete
mixture and the proportions of each ingredient. Water-cementitious ratio, cementitious materials, air
content, chemical admixtures, and type of coarse aggregate are important factors that influence strength.
Experience shows that variability of concrete strength is inevitable even when these factors are held
constant. All constituent materials change with each sample of the material and these changes have
influence on concrete strength. This study provides MDOT engineers with compressive strength data on
gravel aggregate concrete using seven portland cements and three samples collected approximately one
month apart from each source. Crushed limestone was used for control mixtures. Data was collected from
eighty-four mixtures to show compressive strength variability of gravel aggregate concrete.
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