United States Department of Transportation
i
Examining the Required Cement Content
-
2020-06-01
-
[PDF-2.63 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final Report
-
Corporate Publisher:
-
Abstract:Portland cement is a significant component in a concrete mixture. For concrete used in portland cement concrete pavement (PCCP), Class S, and Class S(AE) concrete, the Arkansas Department of Transportation specifies a minimum cementitious material content of 564 lb/yd3 and 611 lb/yd3, respectively. Prior research conducted at the University of Arkansas, TRC 0603, indicated concrete mixtures used in five bridge decks throughout Arkansas achieved the required 28-day strength at seven days, and the measured compressive strength at 28 days was 30% greater than required. The use of high strength concrete in may increase cracking and consequently reduce the durability of the pavement, structure, or bridge deck. Therefore, a reduction of the current cementitious content to a minimum level at which the concrete can meet the requirements of workability, compressive strength, and durability is an essential assignment. In addition, a reduction of the cementitious content can partially reduce construction costs, because cement is the most expensive ingredient in concrete. Using less cement within the concrete mixtures also lessens the negative impact on the environment due to the production of cement accounting for a large portion of total greenhouse gases generated by the production of concrete and its ingredients. This project will examine reducing the required cement content for PCCP, Class S, and Class S(AE) concrete.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
