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Publication Number: FHWA-RD-07-052
Date: September 2007

Long Term Pavement Performance Project Laboratory Materials Testing and Handling Guide

Protocol P49
Test Method for Determinationof Natural Moisture Content (UG10, SS09)

This LTPP protocol covers the determination of the natural moisture content of the unbound granular base and subbase materials and subgrade soils. The test shall be carried out in accordance with AASHTO T265-93 as modified by the following. Only sections of the referenced standard which have been modified are included below. In all other sections the standard shall be followed as written. The test shall be performed on samples of each layer of unbound granular base, subbase and subgrade collected from the specified locations on the pavement sections and marked for moisture content testing, unless otherwise directed by LTPP.

1. SCOPE

1.1 This method covers the laboratory determination of the moisture content of unbound granular base and subbase materials and subgrade soils.

7. REPORT

The following information is to be recorded on Form T49.

7.1 Sample Identification shall include: Laboratory Identification Code, Region, State, State Code, SHRP ID, Layer Number, Field Set Number, Sample Area Number, Sample Location Number, LTPP Sample Number.

7.2 Test Identification shall include: LTPP Test Designation, LTPP Protocol Number, Laboratory Test Number, Test Date.

7.3 Test Results

  1. Moisture content (w) of the sample to the nearest 0.1 percent.

7.4 Comments shall include LTPP standard comment code(s), as shown in Section 4.3 of this Guide and any other note as needed.

7.5 Use Form T49 (Test Sheet T49) to report the above information (Items 7.1 to 7.5).

LTPP LABORATORY MATERIAL HANDLING AND TESTING
LABORATORY MATERIAL TEST DATA
NATURAL MOISTURE CONTENT
LAB DATA SHEET T49

UNBOUND GRANULAR BASE/SUBBASE LAYERS AND SUBGRADE SOILS
LTPP TEST DESIGNATION UG10, SS09/LTPP PROTOCOL P49

LABORATORY PERFORMING TEST:______________________________________________________________

LABORATORY IDENTIFICATION CODE:__ __ __ __

REGION _________________ STATE ___________________ STATE CODE __ __

EXPERIMENT NO _____ SHRP ID __ __ __ __

SAMPLED BY: ______________________________________________ FIELD SET NO. __

DATE SAMPLED: __ __-__ __-__ __ __ __

(CIRCLE SS09 FOR SUBGRADE AND UG10 FOR UNBOUND BASE/SUBBASE) UG10/SS09 LAYER MATERIAL (CHECK ONE): BASE/SUBBASE/SUBGRADE

1. LAYER NUMBER (FROM LAB SHEET L04) __
2. SAMPLING AREA NO. (SA-) __ __ __ __ __ __ __ __ __ __ __ __
3. LABORATORY TEST NUMBER __ __ __ __ __ __
4. LOCATION NUMBER __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
5. LTPP SAMPLE NUMBER __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
6. MOISTURE CONTENT (w)% __ __.__% __ __.__% __ __.__% __ __.__% __ __.__% __ __.__%
7. COMMENTS
     (a) CODE __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
     (b) NOTE _________ _________ _________ ________ _________ _________
_________ _________ _________ ________ _________ _________
9. TEST DATE __-__-___ __-__-___ __-__-___ __-__-___ __-__-___ __-__-___
GENERAL REMARKS:___________________________________________________________________________
SUBMITTED BY, DATECHECKED AND APPROVED, DATE
____________________________________________________________
LABORATORY CHIEF
Affiliation______________________
Affiliation______________________

 

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