Setting Time Measurement Using Ultrasonic Wave Reflection
Journal Article
·
· ACI Materials Journal, 109(1):109-117
OSTI ID:1033823
Ultrasonic shear wave reflection was used to investigate setting times of cement pastes by measuring the reflection coefficient at the interface between hydrating cement pastes of varying water-to-cement ratio and an ultrasonic buffer material. Several different buffer materials were employed, and the choice of buffer was seen to strongly affect measurement sensitivity; high impact polystyrene showed the highest sensitivity to setting processes because it had the lowest acoustic impedance value. The results show that ultrasonic shear-wave reflection can be used successfully to monitor early setting processes of cement paste with good sensitivity when such a very low impedance buffer is employed. Criteria are proposed to define set times, and the resulting initial and final set times agreed broadly with those determined using the standard penetration resistance test.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1033823
- Report Number(s):
- PNNL-20039; 830403000
- Journal Information:
- ACI Materials Journal, 109(1):109-117, Journal Name: ACI Materials Journal, 109(1):109-117 Journal Issue: 1 Vol. 109; ISSN AMAJEF; ISSN 0889-325X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Flocculation and Sedimentation in Suspensions Using Ultrasonic Wave Reflection
Ceramic joint interface diagnostics with ultrasonic reflection signal energies
Ultrasonic fluid flow measurement method and apparatus
Journal Article
·
Thu May 05 00:00:00 EDT 2011
· Journal of the Acoustical Society of America, 129(5):2944-2951
·
OSTI ID:1013920
Ceramic joint interface diagnostics with ultrasonic reflection signal energies
Technical Report
·
Fri Jul 01 00:00:00 EDT 1988
·
OSTI ID:6387462
Ultrasonic fluid flow measurement method and apparatus
Patent
·
Thu Dec 31 23:00:00 EST 1992
·
OSTI ID:868952