Computed parameters : moisture content for unbound materials at seasonal monitoring program sites

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Computed parameters : moisture content for unbound materials at seasonal monitoring program sites

2000-01-01
By United States. Federal Highway Administration

File Language:

English

Details

Corporate Creators:

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA-RD-00-077
Resource Type:

Research Paper
Geographical Coverage:

United States
Corporate Publisher:

Turner-Fairbank Highway Research Center
Abstract:

Moisture content plays a significant role in the performance of pavements. Variation in the amount of moisture in the subgrade can change the volume of swelling soil, which may result in detrimental deformation of the pavement structure. An increase in moisture in the subgrade and unbound base can weaken the bearing capacity of these materials, affecting the pavement's response to loads and, ultimately, pavement service life. The moisture content of unbound materials at the Long Term Pavement Performance (LTPP) Seasonal Monitoring Program (SMP) sites is computed based on the dielectric constant determined through the use of time-domain reflectometry and soil property data contained in the LTPP Information Management System (IMS) database. A discussion of the use of time-domain reflectometer (TDR) probes and the values derived from them can be found in the computed parameters document, "An Input for moisture Calculations--Dielectric Constant from Apparent Length" (Publication No. FHWA-RD-99-201), which can also be found on this web site. 4 p.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/35634/dot_35634_DS1.pdf
File Type:

[PDF - 106.38 KB]
Collection(s):

Federal Highway Administration ; US Transportation Collection
Main Document Checksum:

urn:sha-512:cb6c12668e58dc1be7f7e9a3c5a33b623f3c4fd16ac6e89e716769b2fd94325b6d00dfbff0b5787a9f58562a2690a7c74cb6423a372d96dd73bc690457cce4e8

File Language:

English

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