In Situ Determination of Elastic Moduli of Pavement Systems by Spectral-Analysis-of-Surface-Waves Method (Theoretical Aspects)

Nazarian, Soheil; Stokoe II, Kenneth H.

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In Situ Determination of Elastic Moduli of Pavement Systems by Spectral-Analysis-of-Surface-Waves Method (Theoretical Aspects)

1986-11-01
By Nazarian, Soheil ; Stokoe II, Kenneth H.

File Language:

English

Details

Creators:

Nazarian, Soheil ; Stokoe II, Kenneth H.
Corporate Creators:

University of Texas at Austin. Center for Transportation Research
Corporate Contributors:

Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/TX-87/46+437-2
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Interim
Corporate Publisher:

University of Texas at Austin. Center for Transportation Research
Abstract:

The Spectral-Analysis-of-Surface-Waves (SASW) method is an in-situ testing method for determining shear wave velocity profiles of soil sites and stiffness profiles of pavement systems. The method is nondestructive and is performed entirely from the pavement or ground surface. Measurements are made at strains below 0.001 percent where elastic properties of the materials are independent of strain amplitude. The key elements in SASW testing are the generation and measurement of surface waves. Transient impacts containing wide ranges of frequencies are transmitted to the pavement surface by means of simple hammers. Surface waves generated by these impacts are captured and recorded by the receivers using a spectral waveform analyzer. The analyzer is used to transform the waveforms into the frequency domain and then to perform spectral analyses on them. The points of interest from this operation are the phase information of the cross-power spectrum and the coherence function.
Format:

PDF
Funding:

3-8-85-437
Download URL:

https://rosap.ntl.bts.gov/view/dot/86257/dot_86257_DS1.pdf
File Type:

[PDF - 1.34 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:86134d7a5a3f07fcf1129ec6ac1bc2e51c2469155b27ca6e7964000a406fc35dc0ceba23e72e186c811001883d56ed5923a8404fbe340e3167afe568e26845fa

File Language:

English

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