Use of time domain reflectometry (TDR) with pre-installed wires to check the grout integrity of soil nails /
- 出版日期：2014.
- 出版者：Geotechnical Engineering Office, Civil Engineering and Development Dept.,
- 页数：39 pages :
- 出版地：Hong Kong :
- 第一责任说明：C.S.C.Tang & P.F.K.Cheng.
- 尺寸：30 cm.
- 分类号：a473
- ISBN：(paperback) :
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02h0085131 20161028100951.0 160727s2014 cc a frb |000|||eng | (paperback) : CNY80.00 NGL eng rda NGL NGL a473 Tang, C. S. C., author. Use of time domain reflectometry (TDR) with pre-installed wires to check the grout integrity of soil nails / C.S.C.Tang & P.F.K.Cheng. Hong Kong : Geotechnical Engineering Office, Civil Engineering and Development Dept., 2014. aHong Kong : bGeotechnical Engineering Office, Civil Engineering and Development Department, c2014. 39 pages : illustrations (some color) ; 30 cm. atext btxt 2rdacontent aunmediated bn 2rdamedia avolume bnc 2rdacarrier GEO report ; no. 304 "This report was originally produced in November 2012." Includes bibliographic reference. As part of the development work on non-destructive tests for quality control of soil nails, GEO carried out a study on the application of time domain reflectometry (TDR) to identify defects in the cement grout sleeve of soil nails. This application makes use of the disparities in pulse propagation velocities and waveforms resulting from the presence of grout defects in soil nails.Soil nails with built-in grout defects were prefabricated for the study. TDR tests were conducted on these prefabricated nails, with an aim to examining how the TDR test results correlate with the presence of built-in grout defects. A case study is also presented to illustrate how TDR could be used to identify installed soil nails with significant grout defects. aCheng, P. F. K., ; eauthor. Hong Kong (China). Geotechnical Engineering Office. GEO report (Geotechnical Engineering Office, Civil Engineering and Development Department ) ; no. 304. aCN b010001 010001 P 251.552 G29 v304 ; h1 ; rCNY80.00 gljx1607