Comparison of Setting Time Measured Using Ultrasonic Wave Propagation with Saw-Cutting Times on Pavements

dc.contributor.author Taylor, Peter
dc.contributor.author Wang, Kejin
dc.contributor.author Wang, Xuhao
dc.contributor.author Wang, Xin
dc.contributor.department Institute for Transportation
dc.date 2018-02-17T04:50:55.000
dc.date.accessioned 2020-06-30T04:50:21Z
dc.date.available 2020-06-30T04:50:21Z
dc.date.embargo 2015-11-03
dc.date.issued 2015-10-01
dc.description.abstract <p>At present, there is little fundamental guidance available to assist contractors in choosing when to schedule saw cuts on joints. To conduct pavement finishing and sawing activities effectively, however, contractors need to know when a concrete mixture is going to reach initial set, or when the sawing window will open. Previous research investigated the use of the ultrasonic pulse velocity (UPV) method to predict the saw-cutting window for early entry sawing. The results indicated that the method has the potential to provide effective guidance to contractors as to when to conduct early entry sawing. The aim of this project was to conduct similar work to observe the correlation between initial setting and conventional sawing time. Sixteen construction sites were visited in Minnesota and Missouri over a two-year period. At each site, initial set was determined using a p-wave propagation technique with a commercial device. Calorimetric data were collected using a commercial semi-adiabatic device at a majority of the sites. Concrete samples were collected in front of the paver and tested using both methods with equipment that was set up next to the pavement during paving. The data collected revealed that the UPV method looks promising for early entry and conventional sawing in the field, both early entry and conventional sawing times can be predicted for the range of mixtures tested.</p>
dc.format.mimetype PDF
dc.identifier archive/lib.dr.iastate.edu/intrans_reports/142/
dc.identifier.articleid 1141
dc.identifier.contextkey 7797441
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath intrans_reports/142
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/44768
dc.language.iso English
dc.relation.ispartofseries InTrans Project 14-498; IHRB TR-675
dc.source.bitstream archive/lib.dr.iastate.edu/intrans_reports/142/IADOT_TR_675_InTrans_Taylor_Comparison_Setting_Time_Measured_Using_Ultrasonic_Wave_Propigation_with_Saw_Cutting_Times_on_Pavements_Final_2015.pdf|||Fri Jan 14 20:16:00 UTC 2022
dc.subject.disciplines Civil Engineering
dc.subject.keywords Admixtures
dc.subject.keywords Guidelines
dc.subject.keywords Pavement performance
dc.subject.keywords Portland cement concrete
dc.subject.keywords Sawing
dc.subject.keywords Setting (Concrete)
dc.subject.keywords Stripping (Pavements)
dc.subject.keywords Ultrasonic tests
dc.subject.keywords concrete mixtures
dc.subject.keywords initial set
dc.subject.keywords pavement saw-cutting
dc.subject.keywords ultrasonic pulse velocity
dc.title Comparison of Setting Time Measured Using Ultrasonic Wave Propagation with Saw-Cutting Times on Pavements
dc.type article
dc.type.genre report
dspace.entity.type Publication
relation.isOrgUnitOfPublication 0cffd73a-b46d-4816-85f3-0f6ab7d2beb8
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