Automated Measurement and Control of Slump and Water Content for Concrete Quality Assurance
This paper presents an analysis of data on 8,226 loads of ready mixed concrete as measured by truck-mounted, automated slump management equipment. This equipment measures and controls slump and water content from batching to final discharge, and also records concrete temperature, admixture use, drum rotation speed and number of revolutions, and time. The data indicate that the use of this equipment resulted in concrete arriving at the jobsite at the correct slump for discharge, reduced variability in slump at discharge, and more consistent mixing after loading. Data also showed that water additions can be made, uniformly mixed, and fully documented while the truck is in transit. The paper describes how the documentation and control provided by such equipment can be part of a quality assurance program.
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Supplemental Notes:
- This paper was sponsored by TRB committee AFN40 Concrete Materials and Placement Techniques.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Koehler, Eric P
- Roberts, Mark F
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Conference:
- Transportation Research Board 92nd Annual Meeting
- Location: Washington DC, United States
- Date: 2013-1-13 to 2013-1-17
- Date: 2013
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 13p
- Monograph Title: TRB 92nd Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Concrete mixers; Concrete mixing; Construction sites; Moisture content; Quality assurance; Quality control; Ready mixed concrete; Slump test
- Subject Areas: Construction; Highways; Materials; I32: Concrete;
Filing Info
- Accession Number: 01478660
- Record Type: Publication
- Report/Paper Numbers: 13-3031
- Files: TRIS, TRB, ATRI
- Created Date: Apr 17 2013 8:55AM