Quality Control Parameters for on-site evaluation of pumped Self-Compacting Concrete
Construction and Building Materials, ISSN: 0950-0618, Vol: 154, Page: 1112-1120
2017
- 13Citations
- 37Captures
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Article Description
An experimental study comprising laboratory and real scale tests was carried out to evaluate the usefulness of several pumping, early age and hardened parameters for pumped Self-Compacting Concrete (SCC) quality control. Two pumped SCC, with fly ash and limestone filler, were tested. Pumpability was controlled online by real-time measuring of pumping pressure and discharge rate. Temperature, capillary pressure, dimensional stability and P-wave ultrasonic pulse transmission (UPV) were measured simultaneously to monitor microstructure evolution at early age (EA). UPV (P- and S-waves) were also used as non-destructive testing method for hardened quality control. Pumping reduced compressive strength between 12 and 16% and changed air permeability, although did not modify porosity accessible to water. These Quality Control Parameters (QCP) showed their ability to detect the changes on material’s pumping, EA and hardened performance. Accordingly, they can be used to establish acceptance limits and to identify potential issues arising from undesired changes in material’s properties.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S095006181731574X; http://dx.doi.org/10.1016/j.conbuildmat.2017.07.223; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85029703265&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S095006181731574X; https://api.elsevier.com/content/article/PII:S095006181731574X?httpAccept=text/xml; https://api.elsevier.com/content/article/PII:S095006181731574X?httpAccept=text/plain; https://dx.doi.org/10.1016/j.conbuildmat.2017.07.223
Elsevier BV
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