(1975) Durability of Concrete as Affected by Variations in Air and W/C Ratio, R-258, 1975. Transportation, Department of
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IADOT_r258_Durability_Concrete_Affected_Variations_Air_WC_Ratio_1975.pdf File Size:200kB |
Abstract
Many times during the past four years we have seen ranges in the durability factor for a single coarse aggregate source that were too great to be explained by variations in the coarse aggregate alone. The durability test (ASTM C 666 Method B) as presently used is a test of the concrete system rather than that of a particular coarse aggregate. An informal study of current durability factor data indicates that w/c ratio and/or percentage of air may be critical to beam growth and durability factor. The purpose of this project, R-258, is to determine the extent w/c ratio and air content variations have on beam growth and durability factor when other factors including coarse aggregate gradation are held constant.
| Item Type: | Departmental Report |
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| Keywords: | Aggregate gradation, Air content, Coarse aggregates, Concrete tests, Data analysis, Durability tests, Water cement ratio, W/C ratio |
| Subjects: | Transportation Transportation > Materials Transportation > Materials > Gravel and aggregates Transportation > Roads and highways Transportation > Research Transportation > Research > Concrete |
| ID Code: | 17240 |
| Deposited By: | Iowa DOT Library |
| Deposited On: | 16 Jun 2014 14:23 |
| Last Modified: | 29 Jan 2015 21:09 |
| URI: | https://publications.iowa.gov/id/eprint/17240 |