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Accession Number PB2013-103555
Title PCC Properties to Support W/C Determination for Durability.
Publication Date Oct 2012
Media Count 187p
Personal Author J. Olek Y. Yohannes
Abstract The fresh concrete water-cement ratio (w/c) determination tool is urgently needed for use in the QC/QA process at the job site. Various techniques have been used in the past to determine this parameter. However, many of these techniques can be complicated and time consuming. Furthermore, the extensive calibration is often needed to correlate the properties measured by these techniques with w/c. During the course of the present study, the method for the use of the unit weight for the determination of w/c of fresh concrete has been developed and evaluated on both laboratory and field concretes. Additionally, the accuracy of using microwave oven technique for w/c determination reported by previous research was confirmed. Finally, the accuracies of unit weight and microwave oven techniques for the determination of w/c were compared.
Keywords Calibration
Construction materials
Portland cements
Quality assurance
Quality control
Unit weight
Water to cement ratio

Source Agency N/A
NTIS Subject Category 50C - Construction Equipment, Materials, & Supplies
89G - Construction Materials, Components, & Equipment
Corporate Author Purdue Univ., West Lafayette, IN. Joint Transportation Research Program.
Document Type Technical report
Title Note Final rept.
NTIS Issue Number 1309
Contract Number N/A

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