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Title:

Evaluation of Three Moisture and Density Devices on Unbound Pavement Materials

Accession Number:

01518326

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Moisture content and density are essential properties of geomaterials that should be monitored during construction of pavement layers. Proper estimation of these properties is crucial in quality control/quality assurance (QC/QA) of pavement construction. Despite the dominance of the nuclear density gauge (NDG), several field and laboratory devices are available for measuring geomaterials’ moisture contents and densities. However, these methods require various testing and calibration procedures for quantifying different types of soils. A number of devices including Soil Density Gauge (SDG), Speedy Moisture Tester (SMT) and Time Domain Reflectometer (TDR) were evaluated using four different geomaterials. The SDG and TDR were also evaluated for their density measurements. Laboratory tests were repeated several times at different moisture levels (from dry to wet of optimum moisture contents) after compaction of large-scale laboratory specimens. Tests for density were conducted at the materials’ respective maximum dry densities. The results of the devices were compared with their oven-dried moisture contents and placed densities. Equipment-related variability of each device was evaluated through statistical analyses. The performance of the SDG is material dependent while TDR and SMT results seem to exhibit less variation in determining different levels of moisture contents. The reported moisture contents and densities with the SDG can be improved through a more rigid calibration such as those recommended for the TDR.

Supplemental Notes:

This paper was sponsored by TRB committee AFS20 Soils and Rock Instrumentation.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-4255

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Sotelo, Martin J
Mazari, Mehran
Nazarian, Soheil

Pagination:

13p

Publication Date:

2014

Conference:

Transportation Research Board 93rd Annual Meeting

Location: Washington DC
Date: 2014-1-12 to 2014-1-16
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Uncontrolled Terms:

Geomaterials; Unbound materials

Subject Areas:

Construction; Geotechnology; Highways; Materials; Pavements; I30: Materials; I52: Construction of Pavements and Surfacings

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-4255

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 3:28PM