Quality Assurance Method for Assessment of Stiffness of Pipeline Bedding Material

AbstractAn innovative quality assurance method is used to assess the stiffness of the bedding material to a water pipeline located in Texas. The method used is a combination of spectral analysis of surface waves technique (SASW) and geostatistics. SASW tests were conducted to measure the stiffness o...

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Bibliographic Details
Published in:Journal of materials in civil engineering 2016-04, Vol.28 (4)
Main Authors: Bheemasetti, Tejo V, Puppala, Anand J, Zou, Haifeng, Marshall, David H, Pedarla, Aravind
Format: Article
Language:English
Subjects:
Technical Papers
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Summary:AbstractAn innovative quality assurance method is used to assess the stiffness of the bedding material to a water pipeline located in Texas. The method used is a combination of spectral analysis of surface waves technique (SASW) and geostatistics. SASW tests were conducted to measure the stiffness of pipeline bedding material at 15 sections along the pipeline after different curing periods of 1, 3, 7, 14, and 28 days. The stiffness measurements from SASW tests are used in geostatistical analysis to determine stiffness properties at untested locations and map the variation of stiffness values along the pipeline. The SASW measurements indicated a significant increase in mean stiffness value of bedding material from 267.5 MPa on day 1 to 442 MPa after a 28-day curing period. The geostatistical analysis predicted and mapped the stiffness of bedding material over the entire pipeline by incorporating the variability present in the known stiffness measurements. This research highlights the adaptability of geostatistics and in situ measurements in assessing the quality of the pipeline bedding material.
ISSN:0899-1561
1943-5533
DOI:10.1061/(ASCE)MT.1943-5533.0001431